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Biology > 2 Also PP 22 2022 > Flashcards

2 Also PP 22 2022 Flashcards

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1
Q
  1. pg 2 The diagrams show a test-tube containing pond water. The green colour is caused by
    microorganisms that have chloroplasts. Which characteristics of living organisms are shown?
A

movement, nutrition and sensitivity

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2
Q

What kingom of living organisms has no nucleus?

A

protoctist

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3
Q

What kingom of living organisms has cell wall made of cellulose

A

plant

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4
Q

What kingom of living organisms has cell wall NOT made of cellulose

A

fungi

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5
Q

What is the units of measurement in order

A

Pm
nm
um
mm
m
km
Mm

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6
Q

The diagram shows a mitochondrion. The actual size of the mitochondrion is 1um. The diagram is 70 mm long. What is the magnification of the diagram?

A

x70 000

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7
Q

What is the formula for magnification?

A

M=I/A

Magnification= Image size/Actual size

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8
Q

4 Two types of cell, one animal and one plant, were examined using a light microscope.
Which row shows the correct combination of structures that would be observed in the cells?

A

B

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9
Q

5 The diagram shows a cross-section through a leaf.
Which arrow shows the direction of diffusion of carbon dioxide on a sunny day?

A

D

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10
Q
  1. the diagram shows a plant cell after it has been submerged in a solution, P, for 20 minutes. Describe the water potential of solution P at the start of the experiment
A

water potential of solution P
at the start of the experiment is lower than the inside of the cell

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11
Q

the diagram shows a plant cell after it has been submerged in a solution, P, for 20 minutes. Describe the
condition of the cell after 20 minutes?

A

plasmolysed and flaccid

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12
Q

describe a positive food test for vitamin C

colour of the food test reagent at the start:

heat required: (yes/no)

final colour of the
food test reagent:

A

blue
no
colourless

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13
Q

In which molecule are cross-links formed between bases?

A

DNA

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14
Q

What controls the speed of chemical reactions in all living cells?

A

enzymes

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15
Q

Enzymes have an optimum temperature at which they are most active. Explain why enzyme activity decreases if below optimum temperature

A

enzymes have less kinetic energy

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16
Q

Enzymes have an optimum temperature at which they are most active. Explain why enzyme activity decreases if above optimum temperature

A

enzymes denature

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17
Q
  1. A piece of foil was placed over one green and white leaf on a plant. The plant was placed under a bright light for 24 hours and then tested for starch with iodine
    solution. Which diagram shows the areas of the leaf that would stain blue-black with iodine solution?
A

A

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18
Q

12 The graph shows the effect of light intensity on the rate of photosynthesis.

A

light intensity

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19
Q

Which condition can be caused by a lack of fibre in the diet?

A

constipation

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20
Q

In which test-tube will the breakdown of fat be fastest?

milk, lipase and bile

milk and lipase

milk and bile

milk, boiled lipase and bile

A

milk, lipase and bile

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21
Q

15 The diagrams show stages in the passage of water through a plant.
Which arrow shows water moving in the form of water vapour?

A

B

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22
Q

The diagram shows some potato tubers. New shoots are beginning to grow. Sucrose is being translocated from source to sink.
Which statement is correct?
A The tuber is a sink.
B The soil is a sink.
C The shoots are sources.
D The shoots are sinks.

A

The shoots are sinks.

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23
Q

17 The diagram shows a section through the heart. What is the function of the structure labelled Q?

A

It prevents backflow of blood into part P.

24
Q

During the process of blood clotting, damage to blood vessels stimulates L, and M is converted
to N. What are L, M and N?

A

platelets fibrinogen fibrin

25
Q

Which statement about passive immunity is correct?
A Antibodies are acquired.
B It gives a long-term effect.
C It is inherited.
D Memory cells are produced.

A

Antibodies are acquired.

26
Q

Compared with inspired air, which description of expired air is correct?
A It has less oxygen and less carbon dioxide.
B It has less oxygen and more carbon dioxide.
C It has more oxygen and less carbon dioxide.
D It has more oxygen and more carbon dioxide.

A

It has less oxygen and more carbon dioxide.

27
Q

Which row shows the features of the gas exchange surface in humans?

surface area:
thickness:

A

surface area: large
thickness: thin

28
Q

Yeast is placed inside a container full of a glucose solution with no air.
Which word equation summarises the process that takes place inside the container?

A

glucose -> alcohol + carbon dioxide

29
Q

Which process uses energy released in respiration?

A diffusion
B evaporation
C growth
D osmosis

A

growth

30
Q

Describe deamination

A

the removal of the nitrogen-containing part of amino acids to form urea

31
Q
  1. Which numbered parts form the central nervous system?
A

1 and 2

32
Q

26 The diagram shows a section through the eye of an octopus. Octopuses have eyes that are
similar in structure and function to human eyes. What is the structure labeled 5?

A

pupil

33
Q

26 The diagram shows a section through the eye of an octopus. Octopuses have eyes that are
similar in structure and function to human eyes. What is the structure labeled 6?

A

cornea

34
Q

26 The diagram shows a section through the eye of an octopus. Octopuses have eyes that are
similar in structure and function to human eyes. What is the structure labeled 2?

A

lens

35
Q

26 The diagram shows a section through the eye of an octopus. Octopuses have eyes that are
similar in structure and function to human eyes. What is the structure labeled 4?

A

iris

36
Q

A person eats a large bowl of rice. Rice contains starch.
What happens to the amounts of insulin in the body?

A

It increases

37
Q

A person eats a large bowl of rice. Rice contains starch.
What happens to the amount of glucagon in their body?

A

it decreases

38
Q

What will happen if a pregnant person smokes during pregnancy?
A Nicotine can cross the placenta and affect the fetus.
B Nicotine can cause COPD in the lungs of the fetus.
C The woman can become addicted to carbon monoxide.
D Carbon monoxide can cause cancer in the lungs of the fetus.

A

Nicotine can cross the placenta and affect the fetus.

39
Q

31 The graph shows the four hormones that control the menstrual cycle.
Which curve on the graph represents the hormone LH?

A

C

40
Q

The graph shows the four hormones that control the menstrual cycle.
Which curve on the graph represents the hormone FSH?

A

A

41
Q

The graph shows the four hormones that control the menstrual cycle.
Which curve on the graph represents the hormone Oestrogen?

A

B

42
Q

The graph shows the four hormones that control the menstrual cycle.
Which curve on the graph represents the hormone progesterone?

A

D

43
Q

33 pg 14 In a species of pea plant, height is controlled by one gene. The allele for tall is dominant to the
allele for short.
A test cross is done to identify the genotype of a tall pea plant.
The table shows the possible phenotypes of the offspring and a description of the genotypes of
the tall parent pea plant.

A

C

44
Q

What is continuous variation?

A

For any species, a characteristic that changes gradually over a range of values.

45
Q

What is discontinuous variation?

A

A characteristic of any species with only a limited number of possible values

46
Q

What is a xerophyte?

A

a plant which needs very little water.

47
Q

What is a hydrophyte?

A

plants that have adapted to living in aquatic environments

48
Q

37 pg 16 The diagram shows some of the stages involved in the nitrogen cycle. What processe is carried out at stage 2?

A

absorbtion

49
Q

37 pg 16 The diagram shows some of the stages involved in the nitrogen cycle. What processe is carried out at stage 3?

A

decomposition

50
Q

37 pg 16 The diagram shows some of the stages involved in the nitrogen cycle. What processe is carried out at stage 4?

A

nitrification

51
Q

37 pg 16 The diagram shows some of the stages involved in the nitrogen cycle. What processe is carried out at stage 5?

A

nitrogen fixation

52
Q

37 pg 16 The diagram shows some of the stages involved in the nitrogen cycle. What processe is carried out at stage 1?

A

denitrification

53
Q

38 Genetically engineered bacteria are used to produce human proteins.
Into which component of the bacterial cell is human DNA inserted to produce human proteins?

A

Plasmid

54
Q

What enyme digests the sugar in milk?

A

lactase

55
Q

What type of sugar is in milk?

A

lactose

Biology (10 decks)

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