random end test

Question 1

how big are eukaryotic cells?

Answer 1

10-100 micrometers

Question 2

what organelle is responsible for protein synthesis

Answer 2

ribosomes

Question 3

which organelle is responsible for releasing energy

Answer 3

mitochondria

Question 4

which organelle is responsible for storing DNA

Answer 4

nucleus

Question 5

what is the name of the organelle where aerobic respiration takes place

Answer 5

mitochondria

Question 6

name the process in which a cell develops new sub cellular structures to let it perform a specific function

Answer 6

cell differentiation

Question 7

complete the following sentences…
1- the head contains the sperms nucleus. the nucleus of a gamete carries ____ of an organisms genetic material

2- the combines with the egg cells half of genetic material to _______ the egg cells

3- the _________ at the tip of the sperm cells head contains _________ enzymes needed to break into an egg cell

Answer 7

1 - half
2- fertilise
3 - acrosome , digestive

Question 8

complete the sentences…
1- the middle section is filled with ____________ to provide the sperm with the energy it needs to travel the distance to reach the cell

2- the _________ is used for the cells motion. this allows sperm cells to travel towards the egg cells.

Answer 8

1 - mitochondria
2- flagellum

Question 9

what is the substance that strengthens the cell walls of xylem cells?

Answer 9

lignin

Question 10

how many micrometers is in an egg cells

Answer 10

200