Cell Biology

Question 1

Do prokaryotic cells have membrane bound organelles?

Answer 1

. Have no nucleus
. No membrane bound organelles
. Contain ribosomes only

Question 2

Do eukaryotic cells have a nucleus?

Answer 2

. Have a nucleus which contains DNA
. Contain membrane bound organelles

Question 3

Which cells are larger - eukaryotic or prokaryotic?

Answer 3

Eukaryotic

Question 4

Cells are measured using the unit of …

Answer 4

Micrometers (ųm)

Question 5

The human eye can only see … ųm sized objects?

Answer 5

50

Question 6

1 micrometer (ųm) = …..

Answer 6

1 thousandth of 1 millimetre

Question 7

Put in order (smallest to largest) - chromosome, nucleus, gene, cell, and DNA.

Answer 7

. Gene
. Chromosome
. DNA
. Nucleus
. Cell

Question 8

In bacteria cells, what is the function of the pilus?

Answer 8

. Pilus - small hairs around the bacteria cell
. Help bacteria cells stick to one another or to surfaces

Question 9

In bacteria cells, what is the function of the slime capsule?

Answer 9

Protects bacterium from white blood cells and helps groups of bacteria stick together.

Question 10

In bacteria cells, what is the function of the flagellum?

Answer 10

. Flagella - tail on the bacteria cell
. Aids movement of the bacteria through fluids by rotation

Question 11

What are plasmids?

Answer 11

Small loops of extra dna

Question 12

Are yeast cells eukaryotic or prokaryotic?

Answer 12

Eukaryotic

Question 13

What is the function of mitochondria?

Answer 13

Provide energy - site of respiration

Question 14

What is the function of ribosomes?

Answer 14

Protein synthesis

Question 15

What is the function of cytoplasm?

Answer 15

Site of chemical reactions

Question 16

What is the function of the cell membrane?

Answer 16

Control what enters and exits the cell

Question 17

What is a chromosome?

Answer 17

Packet of DNA

Question 18

How many chromosomes do humans have?

Answer 18

46