Wrong Answers From Multiple Choice

Question 1

What does meiosis of diploid cell produce?

Answer 1

Genetically different haploid cells

Question 2

Out of combustion, photosynthesis, respiration and transpiration, which is NOT part of carbon cycle?

Answer 2

Transpiration

Question 3

Definition of genetics?

Answer 3

Mechanisms of inheritance

Question 4

How to tell if animals are closely related in binomial system and how not to?

Answer 4

You can tell if genus is the same! But if genus is different and species is same it means they are not closely related

Question 5

What is the xylem - level of organisation and what is its function?

Answer 5

It is a tissue, and it is used for support

Question 6

What is continuous and discontinuous variation?

Answer 6

Continuous variation are characteristics like height or weight which is affected by genes and the environment. Discontinuous is distinct categories with no intermediates - e.g. Blood groups

Question 7

Where is starch stored in plant cell?

Answer 7

Chloroplasts

Question 8

Atria, left ventricle and right ventricle

Which is order of these chambers from thickest to thinnest?

Answer 8

Left ventricle, right ventricle, atria

Question 9

What is aspirin used for to reduce risk of coronary heart disease?

Answer 9

It reduces tendency for blood to clot

Question 10

When investigating gravitropism, what are conditions?

Answer 10

Rotate the plant around on ITS SIDE.

Don’t use any light because otherwise it may start to do phototropism

Question 11

Epidermis, mesophyll and vascular bundle cell – which is the order of most chloroplasts to least

Answer 11

Epidermis, mesophyll, vascular bundle cell

Question 12

What factor would result in few microscopic plants in the ocean?

Answer 12

An increase in population of microscopic animals

Question 13

Out of ureters, arteries and phloem… which substances carry amino acids

Answer 13

Arteries (because BLOOD) and phloem

Question 14

How does blood change after is passes through kidney?

Answer 14

It loses urea

Question 15

Order of a normal population graph?

Answer 15

Lag, log, stationary, death

Question 16

What processes produce continuous space for water to flow in xylem?

Answer 16

Breakdown of cell wall between adjacent cells and removal of cytoplasm in each cell

Question 17

What component of cigarette smoke causes a reduced oxygen carrying capacity of the blood?

Answer 17

Carbon monoxide (it bonds irreversibly with haemoglobin)

Question 18

After a meal containing carbohydrates, what would you expect the concentration of glucose and urea in the blood as it passes through liver?

Answer 18

Decreased glucose concentration and increased urea

Question 19

If a herbicide is sprayed on producers in food chain: plants-small fish-large fish-birds of prey, which organism would have the second largest concentration of herbicide in them?

Answer 19

Large fish- herbicides increase as trophic levels go up (bioaccumulation)

Question 20

What is the structure of a xylem’s cell wall (side wall) and end wall?

Answer 20

Side wall is thick as it contains lignin. There is a gap where end wall has been lost- end wall is absent

Question 21

Other details about structure of xylem?

Answer 21

Has a thin area of cell wall called pit. Has a transverse section. Has a space with no cytoplasm.

Question 22

When a cell has lost water to surroundings by osmosis, which part is the partially permeable membrane?

Answer 22

NOT THE CELL WALL - only the cell membrane that does not look so much like a cell membrane (shrunk/gone inwards)

Question 23

What is the structure of a xylem’s cell wall (side wall) and end wall?

Answer 23

Side wall is thick as it contains lignin. There is a gap where end wall has been lost- end wall is absent

Question 24

Other details about structure of xylem?

Answer 24

Has a thin area of cell wall called pit. Has a transverse section. Has a space with no cytoplasm.

Question 25

When a cell has lost water to surroundings by osmosis, which part is the partially permeable membrane?

Answer 25

NOT THE CELL WALL - only the cell membrane that does not look so much like a cell membrane (shrunk/gone inwards)

Question 26

What is the structure of a xylem’s cell wall (side wall) and end wall?

Answer 26

Side wall is thick as it contains lignin. There is a gap where end wall has been lost- end wall is absent

Question 27

Other details about structure of xylem?

Answer 27

Has a thin area of cell wall called pit. Has a transverse section. Has a space with no cytoplasm.

Question 28

When a cell has lost water to surroundings by osmosis, which part is the partially permeable membrane?

Answer 28

NOT THE CELL WALL - only the cell membrane that does not look so much like a cell membrane (shrunk/gone inwards)

Question 29

What is waters path exactly during transpiration?

Answer 29

Water enters else in xylem vessels, moves by osmosis into leaf mesophyll cells, then evaporates into the air spaces, finally diffuses out of the stomata

Question 30

During the cycle of oxygen debt, after deep breathing occurs and extra oxygen is supplied, what happens?

Answer 30

Aerobic respiration of lactic acid - lactic acid is broken down

Question 31

Where is good colour vision found in the eye and what cells result in this?

Answer 31

Cone cells and they are found in fovea

Question 32

What is the only way the nitrogen in atmosphere can form nitrates in soil directly?

Answer 32

Lightning fixation

Question 33

When is progesterone produced in menstrual cycle and why?

Answer 33

It is produced days 15-28, progesterone is secreted by corpus luteum and helps keep endometrium thick

Question 34

How many micro meters in a centimetre?

Answer 34

10,000 um

Question 35

What is function of lymphatic system?

Answer 35

To protect body from infection

Question 36

In a kidney tubule, which substances are filtered out of the blood in the glomerulus?

Answer 36

Glucose, salts, urea and water

Question 37

Describe the structure of lymph vessels and the flow of lymph

Answer 37

Lymph vessels are similar in structure to VEINS - they are thin-walled with valves that prevent backflow as the lymph is under v low pressure. Like veins, contractions of muscles help lymph to flow.

Question 38

How are young plants supported?

Answer 38

Pressure of water inside cells pressing outwards on cell walls