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Cells Flashcards

1
Q

What is the function of a plant cell wall?

A

Gives strength and support to plant cells

Made from cellulose

Makes the cell rigid

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2
Q

What is the function of a plant cell vacuole?

A

Contains cell sap.

This keeps the cell firm.

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3
Q

Identify the 4 components of an animal cell

A

Nucleus

Cell membrane

Mitochondria

Cytoplasm

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4
Q

What is the function of a cell membrane?

A

the barrier around a cell that controls what can enter/exit

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5
Q

What are the 7 components of a plant cell?

A

Nucleus

Cell membrane

Mitochondria

Cytoplasm

Vacuole

Chloroplasts

Cell wall

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6
Q

What is the function of the mitochondria in cells

A

Where respiration happens

Respiration is the reaction that releases energy for the cell

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7
Q

What is the function of cytoplasm?

A

A jelly like substance where chemical reactions takes place

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8
Q

What is the function of the nucleus of a cell?

A

Controls the activity of the cell

Contains genetic information needed to make new cells

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9
Q

How is a nerve cell adapted to carry out its function (job)?

A

It is long and thin so can send messages all over the body.

It has connections at each end to connect with other nerve cells

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10
Q

What is the function of the jelly layer on a human egg cell?

A

To attract sperm.

To protect the egg

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11
Q

How is a sperm cell adapted to carry out its function (job)

A

They have a streamlined shape, to help them swim.

They contain mitochondria to give energy to their tail.

They have a tail for movement.

They have a pointed head that can burrow into the egg

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12
Q

What is the function (job) of a sperm cell?

A

To carry male genetic information.

To fertilise an egg.

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13
Q

How is a root hair cell adapted to carry out its function (job)?

A

It has a long, thin root hair which creates a large surface area for absorbing water and nutrients

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14
Q

What is a specialised cell?

A

A cell that is adapted (has special features).

So that it can carry out a specific function (job)

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15
Q

What is the function of the fat stores in a human egg cell?

A

To provide energy for the developing embryo (early form of a baby)

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16
Q

What is the red pigment in red blood cells called that allows the cell to carry oxygen?

A

Haemoglobin

17
Q

What is the function of a red blood cell?

A

They transport oxygen around the body

18
Q

How is a leaf cell adapted to carry out its function (job)?

A

It is long and thing which provides a big surface to capture sunlight.

It contains many chloroplasts which carry out photosynthesis

19
Q

What is the function (job) of a nerve cell?

A

To carry electrical impulses around the body

20
Q

What is the function of a root hair cell?

A

To help the plants absorb nutrients and water from the soil

21
Q

How are red blood cells adapted to carry out their function (job)?

A

They contain haemoglobin (red pigment) that joins with oxygen.

They have no nucleus so more room for oxygen.

They have a disklike shape to increase the surface area that oxygen can bind to.

22
Q

Why do root hair cells not have chloroplasts like most plant cells?

A

They are underground so they can’t photosynthesis

23
Q

Where does water go when it enters a cell?

A

It enters the vacuole and makes the cell rigid

24
Q

What is the equation for respiration?

A

Glucose + Oxygen –> Energy + CO2 + H2O

25
Q

How are glucose and oxygen transported around the body?

A

By the blood

26
Q

Which nutrient found in food gives us energy?

A

Glucose

27
Q

How does water move into root hair cells?

A

By diffusion

28
Q

What are the waste products of respiration?

A

Carbon Dioxide and water

29
Q

Where does respiration happen?

A

Inside the mitochondria

30
Q

What do amoebas eat?

A

Bacteria, algae, plant cells

31
Q

Give 2 examples of unicellular organisms

A

Amoeba

Euglena

32
Q

What is the name of the process by which euglena and amoebas reproduce?

A

Binary fission

33
Q

What is the function of the eye spot of a euglena?

A

It detects light

34
Q

How is the euglena adapted to get its energy?

A

It has chloroplasts to do photosynthesis

It has an eye spot to detect light

It has a flagellum to move towards light

35
Q

What is a unicellular organism?

A

An organism that is just made of 1 cell

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