cells

Question 1

which part of a cell synthesises proteins

Answer 1

ribosome

Question 2

What structure controls the passage of substances into and out of a cell?

Answer 2

cell membrane

Question 3

Which part of a plant cell absorbs light for photosynthesis?

Answer 3

chloroplast

Question 4

Which part of a cell controls the cell’s activities?

Answer 4

nucleus

Question 5

The plant cell wall is made of a material called __________. What one word completes this sentence?

Answer 5

cellulose

Question 6

Which parts of a cell provide the cell with energy?

Answer 6

mitochondria

Question 7

Chloroplasts absorb energy from what?

Answer 7

‘light’ ‘sun’ ‘sunlight’ ‘light energy’

Question 8

In the diagram of a plant cell, what is the feature labelled A?

Answer 8

nucleus

Question 9

In a bacterial cell, where would you find the DNA plasmids?

Answer 9

cytoplasm

Question 10

What name is given to a group of cells with similar structure and function?

Answer 10

tissues

Question 11

which of these is a example of a tissue? muscle-ear-arm-red blood cell

Answer 11

muscle

Question 12

Which DNA-containing component of other living cells is missing from bacteria?

Answer 12

nucleus

Question 13

Another name for the cells in plants and animals is __________ cells. What word completes the sentence?

Answer 13

eukaryotic

Question 14

Are bacterial cells eukaryotic or prokaryotic?

Answer 14

prokaryotic

Question 15

Which microorganism is described in the following sentences? “They are small cells. Their cells do not contain a nucleus but do have a cell wall.”

Answer 15

Bacteria

Question 16

What name is given to the short loops of DNA found only in bacterial cells?

Answer 16

Plasmid

Question 17

Which of these is a eukaryote? - a human skin cell - a human

Answer 17

a human

Question 18

Which cell part, found in virtually all cells, are red blood cells missing?

Answer 18

Nucleus

Question 19

During the development of a multicellular organism, its cells specialise. What is this process of specialisation called?

Answer 19

Cell differentiation

Question 20

Cells __________ during development to perform different functions.

Answer 20

Differentiate

Question 21

True or false? All human stem cells have the ability to differentiate into any type of human cell.

Answer 21

Fasle

Question 22

In mature animals, cell division is mainly restricted to repairing tissues by __________ old or damaged cells

Answer 22

replacing

Question 23

True or false? Stem cells have the capacity to differentiate into nerve cells.

Answer 23

True

Question 24

There is a risk that __________ can be transferred when using stem cells in medical treatments. What word completes the sentence?

Answer 24

“infections” or “viral infections” or “viruses” or “virii” or “diseases”

Question 25

Rare species of plants can be cloned so they don't go extinct. To do this, stem cells are taken from the __________ of the plant. What one word completes the sentence?

Answer 25

meristem

Question 26

A plant has a desirable trait: it is disease resistant. What can be done to quickly produce large numbers of identical plants with this same trait?

Answer 26

clone

Question 27

What type of cell may be used to treat conditions like paralysis?

Answer 27

stem cell

Question 28

Stem cells have not yet __________, so they retain the ability to develop into other types of cells.

Answer 28

"differentiated" or "specialised"

Question 29

A bone marrow cell has the ability to change into other types of cell. What name is given to this type of cell?

Answer 29

stem cell

Question 30

Which word should be in the sentence ? stem cells have the ability to____ into many other types of cells

Answer 30

Differentiate

Question 31

Which word should be in the sentence ? some people object to the use of these cells, and it is possible to use ____ stem cells from the bone marrow.

Answer 31

Adult

Question 32

the part you look through on the microscope is called ?

Answer 32

eyepiece lens

Question 33

What type of microscope would a biologist use to study sub-cellular structures?

Answer 33

"electron microscope" or "electron" or "use electron microscope" or "transmission electron microscope" or "scanning electron microscope"

Question 34

Iqbal is observing a seed using a digital microscope. The length of the image is 12mm and the microscope is set to ×4. What is the actual length of the seed?

Answer 34

3

Question 35

There are two ways to culture bacteria in a school laboratory: as colonies on an agar gel plate, or in a... what?

Answer 35

"nutrient broth solution

Question 36

True or false? A cell must increase its numbers of ribosomes and mitochondria before it divides.

Answer 36

True

Question 37

What type of cell division results in growth?

Answer 37

mitosis

Question 38

What type of cell division results in cells that are genetically identical?

Answer 38

mitosis

Question 39

True or false? Mitosis is another name for the cell cycle.

Answer 39

false

Question 40

What divides into two in stage 2 of the cell cycle?

Answer 40

nucleus

Question 41

What divides in stage 3 of the cell cycle to form two identical cells?

Answer 41

cell membrane

Question 42

What type of transport is usually happening when oxygen is absorbed into cells?

Answer 42

diffusion

Question 43

What is the missing word? __________ substances can move into or out of cells by diffusion.

Answer 43

soluble

Question 44

What name is given to the process by which a dissolved substance moves across a boundary without energy being required?

Answer 44

diffusion

Question 45

True or false? Water molecules move into and out of cells through the cell membrane by active transport.

Answer 45

false

Question 46

True or false? Water molecules move into and out of cells through the cell membrane by active transport.

Answer 46

false

Question 47

A large __________ __________ can increase the effectiveness of exchange surfaces in plants and animals. What two words complete the sentence?

Answer 47

surface area

Question 48

Should an ideal exchange surface be thick or thin?

Answer 48

thin

Question 49

Name the structure that increases the surface area of the small intestine in humans.

Answer 49

villi

Question 50

True or false? It is more difficult to exchange materials effectively in large, complex organisms than in small, simple organisms.

Answer 50

True

Question 51

Kieran says that the lungs contain alveoli in order to provide them with an efficient blood supply. Is he right?

Answer 51

no

Question 52

True or false? Materials diffuse from the blood into the tissue fluid up a concentration gradient.

Answer 52

false

Question 53

Name the waste product formed from the breakdown of amino acids, which is transported around the body in the blood plasma.

Answer 53

urea

Question 54

True or false? Diffusion takes place only in liquids.

Answer 54

false

Question 55

What adaptation in fish has increased their surface area to volume ratios?

Answer 55

gills

Question 56

The small intestine is adapted for exchanging materials because it has a large surface area, a thin membrane, and an efficient __________ supply. What word completes the sentence?

Answer 56

blood

Question 57

The diagram shows two solutions separated by a membrane. Water molecules can cross the membrane but solute molecules cannot. What name is given to this type of membrane?

Answer 57

partially permeable

Question 58

Look at the following statement. What word completes the first gap? Substances move by diffusion from an area where they are __________ concentrated to an area where they are ___________ concentrated.

Answer 58

Highley

Question 59

Look at the following statement. What word completes the second gap? Substances move by diffusion from an area where they are __________ concentrated to an area where they are __________ concentrated.

Answer 59

less

Question 60

Which organism has a larger surface area to volume ratio: a bacterium or a hedgehog?

Answer 60

bacterium

Question 61

Name the process by which substances can be absorbed against a concentration gradient.

Answer 61

active transport

Question 62

During a marathon the runner will lose a lot of water in... what?

Answer 62

sweat

Question 63

What process provides the energy required to transport substances against a concentration gradient?

Answer 63

respiraition

Question 64

Name one type of substance that is taken into a root hair cell using active transport.

Answer 64

nitrate