1 .
Adenosine triphosphate, commonly known as ATP, is
[Hint ]
2 .
Match each animal to a type of respiratory/circulatory structure. [Hint ]
Using the pulldown boxes, match each item on the left to the corresponding item at right.
2.1
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
grasshopper
A. lungs and a bloodstream
2.2
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
earthworm
B. moist body surface and a bloodstream
2.3
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
single-celled protozoan
C. air-filled tubes and no bloodstream
2.4
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
toad
D. gills and a bloodstream
2.5
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
fish
E. body surface and no circulatory system
2.6
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
cat
F. skin, lungs and a bloodstream
3 .
Label each of the following features on the diagram shown. [Hint ]
For each item below, use the pull-down menu to select the letter which labels the correct part of the image.
3.1
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
mesophyll cells
3.2
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
lower epidermal cells
3.3
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
a waxy, waterproof layer
3.4
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
cells that control the size of the leaf openings
3.5
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
specialised water-conducting cells
3.6
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
cells where the most photosynthesis occurs
4 .
Match each description to a relevant term. [Hint ]
Using the pulldown boxes, match each item on the left to the corresponding item at right.
4.1
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
a gaseous reactant in photosynthesis
A. photosynthesis
4.2
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
a non-gaseous reactant in photosynthesis
B. water
4.3
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
an exothermic reaction
C. carbon dioxide
4.4
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
an endothermic reaction
D. oxygen
4.5
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
a gaseous reactant in respiration
E. glucose
4.6
Choice A
Choice B
Choice C
Choice D
Choice E
Choice F
a non-gaseous reactant in respiration
F. respiration
5 .
Red algae are found at deeper levels in the ocean than green algae. This is useful because red algae
[Hint ]
Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.