Michaelmas

Question 1

What 5 organelles in a animal cell

Answer 1

Nucleus, mitochondria, ribosomes, cell membrane and cytoplasm

Question 2

Function of a nucleus

Answer 2

Controls the cell and contains genetic material (DNA)

Question 3

Function of mitochondria

Answer 3

This is where respiration takes place

Question 4

Function of ribosomes

Answer 4

This is where protein synthesis happens

Question 5

Function of cytoplasm

Answer 5

This is a ‘jelly-like’ substance where the chemical reactions in the cell take place.

Question 6

Function of cell membrane

Answer 6

This is a barrier around the cell. It controls what can come in and out of the cell

Question 7

What are the eight organelles in a plant cell?

Answer 7

Chloroplasts, vacuole, cell wall, nucleus, cell membrane, cytoplasm, mitochondria, and ribosomes

Question 8

Function of chloroplast

Answer 8

This is where photosynthesis happens. Chloroplasts contain green substance called chlorophyll which traps energy transferred from the Sun.

Question 9

Function of vacuole

Answer 9

This contains a water liquid called cell sap. It keeps the cell firm.

Question 10

Function of cell wall

Answer 10

This strengthens the cell and provide support. It is made of a tough fibre cord cellulose which makes the wall rigid.

Question 11

What is a specialized cell?

Answer 11

They are cells adapted so they are suited to carrying out particular jobs

Question 12

What are nerve cells and how have they adapted?

Answer 12

They carry electrical impulses around your body.

They are long and thin and have conncections at each end where they can join to other nerve cells, allowing them to transmit messages around the body

Question 13

What is a red blood cell and its adaptations

Answer 13

They transport oxygen around the body. They contain haemoglobin, a red pigment that joins to oxygen. They have no nucleus. They also have a disc-like shape that increases surface area and helps with carrying oxygen.

Question 14

Reproductive cells and their adaptations

Answer 14

Sperm cells carry male genetic material. They have a streamlined head and long tail allowing them to move through liquid. Lots of mitochondria for energy to swim. When it meets an egg cell, the head of the sperm burrows into the egg. This then can reproduce.

Question 15

What is diffusion

Answer 15

The movement of particles from a place of high concentration to low concentation