Biology P1 - Cell Biology

Question 1

Cell membrane

Answer 1

A selectively permeable membrane surrounding the cell and controlling the entry and exit of materials

Question 2

Cytoplasm

Answer 2

The living substance inside a cell (not including the nucleus)

Question 3

Compound microscope

Answer 3

A microscope in which the lens in close to the simple being magnified

Question 4

Depth of field

Answer 4

The distance between the nearest and farthest objects in focus

Question 5

Eukaryotic

Answer 5

Description of a cell which has a nucleus. Eukaryotic cells also have other structures in the cytoplasm which have membranes around them

Question 6

Haploid

Answer 6

A sex cell (gamete) that contains one set of chromosomes

Question 7

Prokaryotic features

Answer 7

Cell wall , cell membrane ,loops of dna

Question 8

Do eukaryotic have a nucleus

Answer 8

yes

Question 9

Do prokaryotic have a nucleus

Answer 9

no

Question 10

Is prokaryotic or eukaryotic smaller

Answer 10

Prokaryotic are smaller

Question 11

Prokaryotic definition

Answer 11

In prokaryotic cells the genetic material (DNA) is not enclosed in a nucleus

Question 12

Eukaryotic definition

Answer 12

Eukaryotic cells, contain their genetic material (DNA) enclosed in a nucleus

Question 13

Mitochondria

Answer 13

Organelles that contain the enzymes for respiration, and where most energy is released in respiration.

Question 14

Ribosomes

Answer 14

Tiny structures where protein synthesis occurs.

Question 15

Nucleus

Answer 15

Contains genetic material, including DNA, which controls the cell’s activities.

Question 16

Permanent vacuole

Answer 16

Filled with cell sap to help keep the cell turgid.

Question 17

Cell wall

Answer 17

Made from cellulose fibres and strengthens the cell and supports the plant.

Question 18

Tissue

Answer 18

a group of similar cells

Question 19

Name the type of tissue in plants that contains stem cells.

Answer 19

meristematic tissues

Question 20

Which plant does aspirin originate from?

Answer 20

Willow

Question 21

Suggest one reason why the leaves of the deadly nightshade plant have chlorosis.

Answer 21

allow lack of chloroplasts
allow lack of mineral (ions) or
named example such as iron /
nitrate / potassium / zinc (ions)
ignore lack of nutrients /
nitrogen
allow lack of water
allow incorrect pH of soil
allow acidic / alkaline soil
allow (named) infection
allow lack of light
allow other correct suggestions

Question 22

It is important for drugs to be tested in clinical trials before the drugs are approved for
use by the public.
Give two reasons why.

Answer 22

allow to check it is safe
allow to check for side effects
allow to check it is not
poisonous / dangerous / harmful
allow to check how much is
needed
allow to check it works
allow to check it does not

Question 23

How can scientists be sure that claims about new drugs are valid?

Advertise the claims on social media. -a
Ask an international company to produce the drug. -b
Have the claims peer reviewed. -c
Publish the claims in a newspaper. -d

Answer 23

A

Question 24

function of chloroplast

Answer 24

photosynthesis

Question 25

Name one type of cell in a potato plant that does not contain chloroplasts

Answer 25

root hair

Question 26

What is the independent variable in the investigation? Concentration of salt solution Mass of potato piece Time potato is left in salt solution Volume of salt solution

Answer 26

Concentration of salt solution

Question 27

independant variable

Answer 27

measure

Question 28

control variable

Answer 28

stay the same

Question 29

dependant varibale

Answer 29

changes

Question 30

Name one structure in Figure 2 which is present in both plant cells and fungal cells but not in animal cells.

Answer 30

cell wall vaccuole

Question 31

Which disease is caused by a fungus?

Answer 31

Gonorrhoea Malaria Measles Rose black spot

Question 32

Where is protein digested in the human digestive system? Large intestine Liver Salivary glands Stomach

Answer 32

stomach