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IGCSE Biology Paper 2 Mixed Flashcards | StudBud
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IGCSE Biology Paper 2 Mixed
IGCSE Biology Paper 2 Mixed
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1
What kind of skin do amphibians have?
moist with scales
dry without scales
dry with scales
moist without scales
2
A student places two samples of crushed apple into two beakers, P and Q.
A
C
D
B
3
The diagram shows part of a section through a plant stem. Which tissue transports water from the roots to the leaves?
D
A
B
C
4
Which organisms carry out respiration, growth, movement and excretion?
arthropods and flowering plants only
plants only
animals only
all animals and all plants
5
The diagram shows how a seed changes after it is planted in soil and watered.
growth and sensitivity
nutrition and reproduction
nutrition and sensitivity
excretion and growth
6
Many enzymes do not work at temperatures above 60 °C. Which statement explains this?
Substrate molecules are moving too fast.
Substrate molecules are moving too slowly.
Product molecules change shape so they do not fit the active site.
Product molecules are not made because the active site has changed shape.
7
The equation for photosynthesis is shown.
A
B
D
C
8
The diagram shows a section through a leaf. Which arrow shows the direction of diffusion of carbon dioxide on a sunnyday
D
B
A
C
9
Which words correctly complete the paragraph?
A
D
C
B
10
The diagram shows an animal whose scientific name is
Falco peregrinus
.
bird
vertebrate
Falco
F. peregrinus
11
Which condition could be caused by a lack of iron?
anaemia
diabetes
cholera
scurvy
12
Why do some root cells have root hairs?
to increase the surface area of the cells
to provide a place for cell nuclei
to increase the volume of the cell sap
for the maintenance of the temperature of the cell sap
13
Which part of a plant root hair is partially permeable?
the cell vacuole
the cell surface membrane
the cell wall
the cell sap
14
A young, active woman requires more of which constituent in her diet than a young, active man?
iron
protein
fat
vitamin C
15
The table shows the results of food tests carried out on a fruit. What did the fruit contain?
fat and starch
protein and starch
protein and reducing sugar
fat and reducing sugar
16
What is the best source of vitamin C in a balanced diet?
meat
rice
fish
fruit
17
The diagram represents two liquids, separated by a membrane through which osmosis can occur.
Molecules of dissolved substance move from left to right.
Molecules of dissolved substance move from right to left.
Overall, water molecules move from right to left.
Overall, water molecules move from left to right.
18
The drawing shows a ground squirrel. Which feature identifies this animal as a mammal?
eye
tail
fur
four limbs
19
The diagram shows a sample of material taken from an organism. Which level of organisation does the sample show?
organ system
organ
cell
tissue
20
The diagram shows a flowering plant.
B
A
C
D
21
An experiment was carried out to investigate the effect of pH on enzyme action. The graph shows the results.
D
B
A
C
22
Which is a description of translocation?
movement of amino acids and sucrose from sink to source
movement of water down a water potential gradient
movement of amino acids and sucrose from source to sink
movement of water up a water potential gradient
23
Petroleum jelly is waterproof and transparent.
Plants absorb water from the petroleum jelly.
Stomata are blocked by the petroleum jelly.
Plants absorb nutrients from the petroleum jelly.
The petroleum jelly stops photosynthesis.
24
The diagram shows part of the classification of the animal kingdom with an example of each group.
lizard and parrot
centipede and carp
flea and flog
spider and rat
25
The length of a specimen in a photograph is 45 mm. Its actual length is 25 mm. What is the magnification?
x1.8
x1125
x1.6
x0.6
26
In which part of the cell does aerobic respiration occur?
mitochondrion
cytoplasm
ribosome
vesicle
