B1: Specialised Cells and Unicellular Organisms Flashcards

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1
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 connecitons at each end to connect with other nerve cells.

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2
Q

State 3 ways a sperm cell is 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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3
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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4
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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5
Q

What is the funciton 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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6
Q

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

A

Haemoglobin

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7
Q

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

A

It has a big surface to capture sunlight.

It contains many chloroplasts which carry out photosynthesis.

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8
Q

What is the funciton of a root hair cell?

A

To help plants absorb nutrients and water from soil.

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9
Q

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

A

Because they are underground - no light for them to carry out photosynthesis.

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10
Q

What is the function of a leaf (palisade) cell?

A

To carry out photosynthesis and make food for the plant.

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11
Q

Give 2 examples of unicellular organisms.

A

Amoeba

Euglena

Bacteria

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12
Q

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

A

BINARY FISSION

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13
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.

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14
Q

Identify the part(s) of a Euglena which are found in plant cells.

A

Chloroplasts, (vacuole)

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15
Q

What is a unicellular organism?

A

An organism that is made from just one cell

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