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Questions


Cells

1) which of the following is the largest?

A – cell
B – Nucleus
C – Organ
D – tissue

 

2) what is the main function of the root hair cell?
A – to absorb sunlight
B – to absorb water
C – to interact with the soil
D – to absorb nutrients

 

3) what is the main function of the leaf?
A – to absorb sunlight
B – to absorb water
C – to interact with the air
D – to absorb nutrients

 

4) which statement best describes the lungs?
A – it is a cell used for gas exchange
B – it is an organ used for gas exchange
C – it is an organ used to pump blood around the body
D – it is a tissue used for respiration

 

5) which of the following absorbs water and nutrients

in a plant?

 

A – leaves
B – stem
C – Root hairs
D – Roots

 

6) what is the function of a cell membrane?
A – control entry in an out of the cell
B – used for respiration
C – is where the chemical reactions take place
D – keeps the cell firm

 

7) tissues are made of many cells, which tissue

allows body parts to move?

A – heart
B – lungs
C – Muscle
D – Brain tissue

 

8) which cell type does not have a nucleus?
A eukaryotic cell
B bacteria
C palisade cell
D nerve cell

 

9) which cell type is involved in photosynthesis ?
A – vacuole
B – cytoplasm
C – chloroplasts
D – mitochondria

 

10) what is a specialized collection of similar small

units?

A – tissue
B – cell
C – organ
D – system

 

11) which organ is part of the respiratory system?
A – stomach
B – Lung
C – heart
D – brain

 

12) which of the following phrases best describes

cytoplasm?

A – most of the liquid in an animal cell
B – small green structures in plant cells
C – a large sugary liquid filled space in a plant cell
D – it controls the cell activities

 

13) Which organ is part of the nervous system?
A – stomach
B – Lung
C – heart
D – brain

 

 

Short answer question


1 –  what Is the equation for total magnification ?

 

TOTAL MAGNIFICATION = EYE PIECE LENS

MAGNIFICATION X OBJECTIVE LENS MAGNIFICATION

 

2 – describe the difference between animal and plant

cells?

 

Animal cells do not have chlorpasts, cell wall or a vacuole

 

3 –  how is the red blood cell adapted to its function?

 

Has a large surface area to allow to carry more oxygen

Does not have a nucleus so it can carry more oxygen

Has a concave, donut like shape

Has hemoglobin which carries the oxygen

 

4 – define unicellular organisms?

 

A unicellular organism is one that only has one cell for 

example bacteria, protozoa and fungi .

 

5 – describe the function of  a flagellum?

 

It is used to help the bacteria move

 

6- which industrial processes is yeast used in?

 

Used to make alcohol and bread

 

 

Skeletal and muscular systems


 

Describe the four main functions of the skeleton:

 

To keep the body upright

To protect organs

To aid the body in movement

To make new red blood cells

 

How does the skeleton aid movement?

 

The muscles are attached to bones which allows us to move

in all directions

 

How does the skeleton aid the production of red blood

cells?

 

They are made in the bone marrow, the inner soft tissue which

bones

 

What are the function of joints?

 

The bones are joined together by joints, which allow them to

move

 

Describe the synovial joint?

 

Some joints within the body contain a fluid called, synovial

fluid. This fluid helps to reduce the friction between two

different bones. The fluid is aided by cartilage, which surrounds

the ends of the bones preventing direct contact between the two

bones

 

In which bone do hinge joints exist and in which

direction do they move?

 

hinge joint allows movement backwards forwards and

backwards and is present in the knee and elbow

 

Describe the term antagonistic muscles?

 

Antagonistic muscles work in opposite directions For

example  – a pair of antagonistic muscles are biceps and triceps

 

Which joint allows complete movement in all directions?

 

ball and socket joint

 

 

Multiple choice question


The Skelton is made up of which mineral

  1. iron
  2. magnesium
  3. folate
  4. calcium

 

Which structure protects the brain

  1. skull
  2. ribs
  3. femur
  4. spinal chord

 

which structure protects the cardiovascular system?

  1. skull
  2. ribs
  3. femur
  4. spinal chord

 

 

in which area of the body are red blood cells made?

  1. Heart
  2. Lungs
  3. Bone marrow
  4. Kidney

 

 

which structure joins the bones together

  1. ligaments
  2. muscle
  3. cartilage
  4. joints

 

 

what prevents friction between two bones

  1. ligaments
  2. muscle
  3. cartilage
  4. synovial fluid

 

 

the hinge joint allows movement

  1. forwards and backwards
  2. side to side
  3. in all direction
  4. no movement

 

 

the ball and socket joint allows movement

  1. forwards and backwards
  2. side to side
  3. in all directions
  4. no movement

 

 

muscles are attached to bones by structures called

  1. tendons
  2. cartilage
  3. ligaments
  4. synovial joints

 

 

define antagonistic muscles?

  1. Work in the same direction
  2. work in opposite direction
  3. the are in opposite places of the body
  4. they work really hard

 

 

Diet

 

1 – What is the function of carbohydrates?

  1. To provide short term energy
  2. To provide long term energy
  3. Help muscle growth
  4. To move food through the gut

 

 

2 – what is the function of proteins?

  1. To provide short term energy
  2. To provide long term energy
  3. Help muscle growth
  4. To move food through the gut

 

 

3 – what is the function of dietryfibre?

  1. To provide short term energy
  2. To provide long term energy
  3. Help muscle growth
  4. To move food through the gut

 

 

4 – what is the function of lipids?

  1. To provide short term energy
  2. To provide long term energy
  3. Help muscle growth
  4. To move food through the gut

 

 

5 – how many calories should a man be consuming?

  1. 2400
  2. 2500
  3. 2600
  4. 2700

 

 

6 – a deficiency in which nutrient causes aneamia?

  1. Iodine
  2. Iron
  3. magnesium
  4. calcium

 

 

7 – adefiency in which nutrient causes goitre

  1. Iodine
  2. Iron
  3. magnesium
  4. calcium

 

 

8 – what helps break down large molecuels into small

molecules?

  1. Neurons
  2. acid
  3. hormones
  4. enzymes

 

 

9 – which enzyme helps break down carbohydrates into

simple sugars

  1. amylase
  2. lipase
  3. protease
  4. nuclease

 

 

10 – which enzyme helps break down protiens into amino

acids

  1. amylase
  2. lipase
  3. protease
  4. nuclease

 

 

11 – which enzyme helps to break down lipids into fatty

acids

  1. amylase
  2. lipase
  3. protease
  4. nuclease

 

 

12 – in which part of the body does absorption take

place

  1. large intestine
  2. stomach
  3. small intestine
  4. liver

 

 

short answer questions

 

1 – what disease is caused by a lack of vitamin A?

blindness

 

 

2- what is the source of carbohydrates?

Bread, pasta, potatoes

 

 

3- which three factors do energy requirements depend

on

gender, age and daily activity

 

 

4 – what does a defiency in calcium lead to?

Weak bones and teeth

 

 

5- what does a defiency in vitamin D lead to?

A pack of vitamin D causes legs to bow outward in a disease

called rickets

 

 

6 – what is the function of an amylase enzyme?

To convert cabohydrates into simple sugars

 

 

7 – what is the function of a lipase enzyme?

To convert lipids int glycerol and fatty acids

 

 

8 – describe what happens to food once it enters your body ?

the teeth break the food down in to smaller pieces

saliva releases enzymes which help to digest the food

the food then reaches the stomach where acid help to digest

the food in the small intestine is where the absorption

occurs the excess is removed through the rectum

 

 

9 – describe the adaptations of the small intestine that

make it efficient in its function?

 

Large surface area achieved by the small finger like projections

called villi

 

Short diffusion distance achieved by having the barrier only one

cell thick

 

Large blood supply ensuring the absorbed nutrients can be

carried to the rest of the body

 

 

Respiration

 

1 – whatdeos aerobic respiration require?

  1. Oxygen
  2. Nitrogen
  3. Carbon dioxide
  4. Sun light

 

 

2- in which part of the cell does respiration occur

  1. Nucleus
  2. Cytoplasm
  3. Mitochondria
  4. Ribsome

 

 

3- which statement best describes anaerobic respiration

  1. Occurs in plenty of oxygen
  2. Requires a lot energy
  3. Occurs in a lack of oxygen
  4. Does not produce lactic acid

 

 

4- which industrial process requires anaerobic respiration

  1. Fertilization
  2. Fermentation
  3. Hydrogenation
  4. Aeration

 

 

5  – what is the scientific term for breathing

  1. Respiration
  2. Ventilation
  3. Inhalation

 

 

6- what is produced in anaerobic respiration

  1. Glucose
  2. Carbon dioxide
  3. Lactic acid
  4. Sulphuric acid

 

 

7- what are the products of aerobic respiration?

  1. Glucose + oxygen
  2. Glucose+ water
  3. Carbon dioxide+ oxygen
  4. Carbon dioxide +water

 

 

8 – what is required for aerobic respiration to occur

  1. Glucose + oxygen
  2. Glucose+ water
  3. Carbon dioxide+ oxygen
  4. Carbon dioxide +water

 

 

9 –in the process of fermentation what is produced

  1. Glucose + ethanol
  2. Glucose+ water
  3. Carbon dioxide+ ethanol
  4. Carbon dioxide +water

 

 

10 – where does the glucose come from in aerobic

respiration

  1. Cells
  2. Food
  3. Air
  4. brain

 

 

 

short answer questions

write out the equation for aerobic respiration

GLUCOSE  + OXYGEN  à  CARBON DIOXIDE + WATER +

(energy)

 

write out the equation for anaerobic respiration

GLUCOSE à  LACTIC ACID + (energy)

 

write out the equation for fermentation

glucoseà ethanol + carbon dioxide

 

what happens in a abuild up of lactic acid

muscles begin to cramp, cells begin to die

 

In which ways is aerobic respiration different to

anaerobic respiration

Aerobic respiration requires oxygen

 

Why do cells need to respire

To produce energy and survive

 

How is the carbon dioxide removed from the body

It is breathed out

 

 

The human gas exchange system

 

1 – How does air enter the body?

  1. Through the lungs
  2. Through the heart
  3. Through the windpipe

 

 

2- what are alveoli?

  1. Small air sacs where gas exchange occur
  2. Small sacs here blood is exchanged
  3. Small air sacs that hold carbon dioxide
  4. Large air sacs where gas exchange occurs

 

3-  in which direction does air move

  1. From low pressure to high pressure
  2. From high pressure to low pressure
  3. Moves across equal pressure
  4. Does not move across pressures

 

 

4 – what causes the lungs to expand?

  1. Diaphragm relaxes
  2. The heart contracts
  3. The diaphragm contracts
  4. The intercostal muscles relax

 

 

5- during inhalation what happens to the intercostal

muscles

  1. They contract
  2. They relax
  3. There is no change

 

 

6- during exhalation what happens to the volume of the

ribcage?

  1. Increases
  2. Decreases
  3. No change

 

 

7 – where does gas exchange occur

  1. In the bronchioles
  2. Bronchus
  3. Trachea
  4. Alveoli

 

 

8 – what best describes diffusion

  1. Gases moving from an area of high to low concentration
  2. Gases moving from low to high concentration
  3. Gases moving across equal concentrations

 

 

9 – how do the oxygen get around the body

  1. In the veins
  2. In the arteries
  3. In the lymph tissues
  4. In the bones

 

 

Short answer questions

 

1 What substance do we breathe out and what do we

breathe in?

co2 and oxygen

 

2 What is the difference between respiration and

ventilation?

Ventilation is the process of breathing in and out and respiration

is the process of producing energy in cells

 

3 Describe the process of inhalation

During inhalation air moves in. For this to occur the pressure

inside the lungs needs to be lower than outside

To ensure the pressure in the lungs is lower, the diaphragm

contracts and flattens and therefore increases the volume in

the lungs. Also the intercostal muscles, the muscles that

surround the rib cage contract, this move the ribs up and out,

therefore allowing the lungs to increase in volume even more

 

 

4 Describe the process of exhalation

During exhalation air moves out of the body. For this to occur

the pressure inside the lungs has to be greater than outside

 

To ensure the pressure in the lungs is lower, the diaphragm

relaxes and moves upwards back into its original shape, the

intercostal muscles also relax letting the ribs move down.

Overall this makes the volume in lungs decrease and

therefore the pressure increases so air moves out

 

 

5 list the features of alveoli that help increase the rate of

diffusion

The alveoli are small structures within the lungs which resemble a

hollow bunch of grapes. They help to increase surface area, they

have very thin walls and have a very large blood supply. All these

factors help to increase the the rate of diffusion

 

Multiple choice questions 

 

1 – what is the purpose of DNA

  1. To hold genetic information
  2. To move substances
  3. To make energy

 

 

2 – how many pairs of chromosomes do humans have?

  1. 21
  2. 22
  3. 23
  4. 24
  5. 25

 

 

3- how many chromosomes do gametes carry?

  1. 21
  2. 22
  3. 23
  4. 24
  5. 25

 

 

4 – base A attaches to which other base

  1. G
  2. C
  3. T

 

5 – what shape is a DNA molecule

  1. Helix
  2. Circle
  3. Square
  4. Double helix

 

 

6 – which statement best describes a gene?

  1. A portion of DNA that controls a certain characteristic
  2. A portion of DNA in which structures are coiled into
  3. A portion of DNA in which chromosomes are stored
  4. A portion of DNA in which controls cell mechanisms

 

 

7 – which statement best describes the term species?

When bred together they produce favourablecharactersistics

A group of organisms that can breed together to form fertile

offspring

A group of organisms that live in the same ecosystem

 

 

8 – which set of data would not fit into continuous

data

  1. Height
  2. Weight
  3. Eye colour
  4. Hand span
  5. Head width

 

 

Short answer questions

 

1- What is the function of chromosomes?

DNA is coiled into structures called chromosomes, which are

then stored in the nucleus of the cells

 

 

2 – describe the structure of DNA?

DNA molecules have two strands; the strands rotate around each

other forming a double helix. The strands contain bases across

which bonds form, holding the two strands together.

 

 

3- define the term species?

A species is a group of organisms that can breed together to

form fertile offspring. Therefore these organisms are usually

very similar.  For example two dogs can breed

 

 

4 –  define the term selective breeding?

Organisms of the same species can be selectively bred with each

other to produce favorable characteristics

 

 

5- what is variation?

Variation is the differences that exist within a species, for example

in humans, some may be taller some may be shorter

 

 

6 –  how does inheritance affect variation?

Eye colour can differ due to the genes you receive from your mother

or father. However the eye colour cannot differ due to environmental

factors.

 

 

7 – which other factors affect variation?

Environmental factors can also influence your characteristics. A

prime example of this is weight, which can be determined by how

much one eats. Height can also be determined by environmental

factors but it can also be determined by inherited factors.

 

 

8 – describe continuous variation?

Continuous variation has data in which the values vary across a

range. An example of this is height, where there is a continuous

variation. The range could vary from 130cm to 200cm.  this data

is usually highlighted in a line graph

 

 

9 –describe discontinuous variation?

Discontinuous variation has data in which the values can be placed

in particular groups. For example blood groups, which can be

placed in groups of A, B, AB or O. the numbers within each group

may vary.  This data is usually highlighted in a bar graph

 

 

 

 

 

Plant reproduction

 

Multiple choice questions

 

what is the male part of the flower called?

  1. Sepal
  2. Ovule
  3. Stamen
  4. Pistil

 

what is the female part of a flower called?

  1. Sepal
  2. Ovule
  3. Stamen
  4. Pistil

 

what is the function of the stamen?

  1. To produce pollen grains
  2. To collect pollen grains
  3. To release seeds
  4. To make petals

 

what is the function of the pistil

  1. to produce pollen grains
  2. to collect pollen grains
  3. to release seeds
  4. to make petals

 

what are the two ways of pollination?

  1. Humans
  2. Wind
  3. Flower transport
  4. Insects

 

 

   which is not true of insect pollinated plants

  1. The petals are large and colourful
  2. The flowers do not release any scent
  3. The pollen grains are sticky
  4. The anthers are usually on the inside of the plant

 

 

 which is not true of wind pollinated plants

  1. The petals are usually smaller
  2. The flowers do not release any scent
  3. The pollen grains are smooth and light
  4. The anthers are usually on the inside of the plant

 

where is pollen produced?

  1. Style
  2. Anther
  3. Ovary
  4. Pistil

 

 

where does fertilization occur in a plant?

  1. Ovary
  2. Ovary wall
  3. Stamen
  4. Pistil
  5. Anther

 

 

 which part of the flower forms the seed

  1. Ovary
  2. Ovary wall
  3. Stamen
  4. Pistil
  5. Anther

 

 

Short based answer question

 

1 –  what does the male part of the flower consist of?

The male part of the flower is called the stamen, the stamen has

two parts the anther and the filament

 

 

2 – what does the female part of the flower consist of?

the female part of a plant is called a pistil.  The pistils made up

of three components; stigma, style and ovary

 

 

3 – define pollination?

Pollination is the process of moving pollen grains from one plant

to another. Pollen grains can either be carried by the wind or by

insects

 

 

4 – describe the nature of the petals and pollen in insect

pollinated plants?

The petals are usually large and very colourful

The pollen grains are usually very sticky

 

 

5 – describe the nature of the anthers and stigma in wind

pollinated plants

the anthers are on the outside of the plant to ensure the pollen grains

are accessible to the wind the stigma are also on the outside to catch

the drifting pollen

 

 

6 – describe the process of fertilization in a plant ?

Once a pollen grain reaches the stigma, the pollen grows through the

flower until it reaches the ovule of the flower.

When the pollen grain joins with the ovule this is known as

fertilization

 

 

7 – what are the three main parts of the seed?

The embryo is the shoot which will become the plant

The food store is the seed which will contain carbohydrate for

the plant until it an photosynthesize

Seed coat, which will provide protection for the seed, it forms a

tough outer barrier.

 

 

8 – what do plants compete for?

Light, food, water and space

 

Photosynthesis

 

Multiple choice questions

 

1 – Where does photosynthesis take place?

  1. Nucleus
  2. Chloroplasts
  3. Vaccuole
  4. Cytoplasm

 

 

2 – what are the products of photosynthesis?

  1. Carbon dioxide and water
  2. Glucose and water
  3. Glucose and oxygen
  4. Carbon dioxide and oxygen

 

 

3 – How do plants get water?

  1. Leaves
  2. Petals
  3. Roots
  4. Stem

 

 

4 – Through which structure is carbon dioxide absorbed

through?

  1. Leaves
  2. Petals
  3. Roots
  4. Stem

 

 

5 – what is the function of stomata

  1. To control what enters the cell
  2. To let substances in
  3. To transport substaces
  4. Absorb light

 

 

6 – What is the function of the guard cells

  1. To control what enters the cell
  2. To let substances in
  3. To transport substances within the plant
  4. Absorb light

 

 

7 – What is the function of xylem and phloem

  1. To control what enters the cell
  2. To let substances in
  3. To transport substances
  4. Absorb light

 

 

8 – What is the function of chlorophyll

  1. To control what enters the cell
  2. To let substances in
  3. To transport substances
  4. Absorb light

 

 

9 – Which structure protects the leaf and prevents water

loss

  1. Waxy cuticle
  2. Stem
  3. Flower
  4. Stamen

 

 

10 – What is the function of the spongy layer?

  1. To protect the cell
  2. To help carry water
  3. Allows carbon dioxide to move
  4. To absorb sunlight

 

 

Short answer questions

 

1 – What is the equation for photosynthesis?

Carbon dioxide + water à glucose + oxygen

 

 

2 – Describe the function of the subunits that are held

within chloroplasts?

Photosynthesis takes place in plants cells in small subunits called

chloroplasts which contain a small green pigment called chlorophyll

These green pigments help to absorb light and convert light into energy

which can be used by the plant

 

 

3 – Describe how plants receive the nutrients required for

photosynthesis?

Plants get water from the ground through the roots, and they gain

carbon dioxide from the air as it absorbed through the leaves. The

products of photosynthesis are then released through respiration

 

 

4- How is the leaf adapted to its function?

It is thin – provides a short diffusion distance for gases

Contains chlorophyll – absorbs light

Stomata – small pores which allow substances to enter the leaf

Guard cell- control what enters the cell, this controls the internal

conditions of the cell

Xylem and phloem – act as a network which help move all the

substances around the plant

 

 

5 – Describe the upper part of the leaf.

The upper part of the leaf is where the sunlight hits. Therefore

the upper part of the leaf has many palisade cells( cells for

photosynthesis) . These palisade cells have many chloroplasts

and look like the plant cell drawn above.

 

6 – Describe the lower part of the leaf

The lower part of the leaf cell is called the spongy layer. It has

many gaps, which allows the carbon dioxide to move around and

reach other cells

 

 

7-how is water absorbed by the leaf?

Water is absorbed from the ground. The roots have root hair cells,

which are adapted to getting the maximum amount of water from

the ground. There are long and thin, which allows them to reach the

maximum area, also they have very thin walls thus reducing the

diffusion distance for water.

 

Food chains

 

Multiple choice questions

 

 

1 – Define the term ‘environment’

  1. The place where an organism lives
  2. The condition that surround a living organism
  3. All of different organisms that live in one habitat
  4. All of a single species in a habitat

 

 

2 – Define the term ‘population’

  1. the place where an organism lives
  2. the condition that surround a living organism
  3. all of different organisms that live in one habitat
  4. all of a single species in a habitat

 

 

3 – Define the term ‘habitat’

  1. the place where an organism lives
  2. the condition that surround a living organsism
  3. all of different organisms that live in one habitat
  4. all of a single species in a habitat

 

 

4 – What does a food chain start with?

  1. Sun
  2. Producer
  3. Consumer

 

 

5- What do the arrows represent?

  1. The way the animals move
  2. The way the energy is moving
  3. The way the food is moving

 

 

6 – Which statement best describes pyramid of numbers

  1. The numbers of each organism at each level of the food chain
  2. The amount of energy within in level of the food chain
  3. The amount of food present at each level of the food chain

 

 

1 – What function does a producer have in a food chain?

A food chain always starts with a producer, this will be plant, as it

can make its own food through photosynthesis by absorbing

sunlight

 

2 – Label the diagram

 

abcdefg

 

 

 

 

 

hhhhhhh

3 – In the above food chain what would happen if the levels

of grass decreased?

 

if the populations of grass decreased then the cows would have less

food to eat and therefore the populations of cows would decrease,

which would also affect the humans

4 – In the above food web, which is the producer?

Grass

 

5 – In the above food web, which are the primary

consumers?

Mouse, rabbit, grasshoppers

 

6 – In the above food web which are the secondary

consumers?

Snake, lizard, hawk

 

7 – In the above food chain which are the tertiary

consumers?

Hawk only

 

 

Evolution

 

Multiple choice questions

 

1 – The theory of evolution was created by

  1. David Darwin
  2. Charles Darwin
  3. Thomas Edison
  4. Brain lara

 

 

2 – Which statement best describes the theory of

evolution

  1. Organisms changing over time
  2. The large animals surviving
  3. The fastest animals living the longest

 

 

3 – In which book did Charles Darwin write his ideas

  1. The origin of habitats
  2. The origin of species
  3. The theory of evolution
  4. The origin of evolution

 

 

4 – Which statement best describes natural selection?

The animals are selected from birth to survive

All the organisms survive

The organisms who are best adapted to the environment will

survive

 

 

5 – Which statement is not true of natural selection?

Organisms do not show a wide range of variation

Particular genes allow them to survive in a particular environment

The genes are passed on to the offspring

Those without the genes are not able to compete for food

 

6 – What does not cause extinction?

  1. Disease
  2. Predator
  3. A change in the environment
  4. Too many prey

 

 

7 – Which statement best describes biodiversity

  1. Is having the least number of species in a particular environment
  2. Is having as many species in many different environments
  3. Is having as many species in a particular environment

 

Short answer questions

 

1 – Describe the term natural selection

The ones that were the most adapted to a particular environment

survived and those that were not, died.

 

2- Describe the series of steps for natural selection

Organisms show a wide range of variation due to the genes they

possess

 

These genes allow them to survive in particular environments,

because they survive they are able to pass on their genes

 

The genes passed on to the offspring also allows them to survive

 

Those without the genes are not able to compete for food or shelter

and will soon die

 

Over time only certain individuals within a species will exist as they

evolve and out compete others

 

 

3 – Why does extinction occur?

Disease – a disease which wipes out a whole species

 

Predator – a new predator which eats all the prey before they

can reproduce

 

A change in the environment – a change in temperature or climate,

may reduce the chances of a particular species of surviving

 

Competition – competition from another species for food and

habitats will cause the other species to die out

 

 

4- Define the term ‘biodiversity’

 

Biodiversity is having as many species in a particular environment

as possible. This ensures that food chains survive and ensures that

we protect the variety of living organisms on this earth

 

 

5 – Describe different conservation methods

There are many ways to protect a species, the simplest way is

through education, educating the public about a particular species

will increase the awareness and help reduce the aspect, which is

causing the decline in numbers

Another way is to start breeding programs, which encourage

organism to breed, and thus increasing the population of that

particular species

 

 

Human reproduction

 

1 – What are male gametes called?

  1. Egg cell
  2. Sperm cell
  3. Eukaryotic cell
  4. Penis

 

2- What are female gametes called?

  1. Egg cell
  2. Sperm cell
  3. Eukaryotic cell
  4. Uterus

 

3 – What is the function of testes?

  1. To produce semen
  2. To produce urine
  3. To hold sperm
  4. To produce hormones and sperm

 

4 – What is the function of the ovaries?

  1. They contain egg cells
  2. Spate the uterus from the cervix
  3. Connect the uterus

 

5 – How long does the menstrual cycle usually last for?

  1. 26 days
  2. 27 days
  3. 28 days
  4. 29 days
  5. 30 days

 

6 – On which day is the egg released?

  1. day 7
  2. day 12
  3. day 14
  4. day 16

 

7 – After which day does the lining break down?

  1. day 1
  2. day 14
  3. day 20
  4. day 28

 

8 –which organ provides nutrients to the fetus?

  1. Placenta
  2. Heart
  3. Stomach
  4. Brain

 

9 – Which change during puberty is not specific to a

gender?

  1. Breast development
  2. Testes grow
  3. Hips get wider
  4. Pubic hair will grow

 

Short answer questions

 

1 – Name the parts of the male reproductive systems?

Testes and penis

 

2 – What are the female gametes called

Egg cells

 

3- Describe the changes that occur in puberty only in

females

Hips widen, breast development, menstruation

 

4 – What occurs on da 14 in the menstrual cycle?

Egg is released

 

5 – Where are the male gametes made?

Testes

 

6 – What nutrients does a baby need?

Oxygen and food

 

7- Describe the purpose of the menstrual cycle?

The menstrual cycle is a cycle of approximately 28 days. It is

process in which the uterus lining builds up in anticipation of

the arrival of an egg. If the egg is not fertilized, the uterus is

shed and released in blood through the vagina.

 

8 – Describe the days of the menstrual cycle

Day one – this is when the menstruation begins, the uterus lining is

breaking down and being removed in blood through the vagina

 

Day 4 /5 – the bleeding stops and the uterus begins to build up again.

 

Day 14 – a mature egg is released as the uterus lining reaches its

full thickness

 

Day 14 – 28 – the uterus lining is maintained just in case

fertilization occurs. If fertilization occurs the egg will implant

in the uterus lining which will help from the womb

 

Day 28 – if a sperm cell has not fertilized the egg cell then the

uterus lining will break down and the cycle will start again