BTEC Quiz Unit 3

How many carbons are in a molecule of ethanol?

• 1

• 2

• 3

• 4

• 5

Which of the following are abiotic factors?

• light, soil pH, Competition

• Carbon dioxide concentration, predation

• disease, gradient, oxygen concentration

• Iron concentration, wind, type of soil

What is the picture of

• quadrat

• transect

• point frame

• light meter

What is formed during an enzyme catalysed reaction in order for a product(s) to be made?

• Enzyme-substrate complex

• substrate

• Enzyme

• Active site

What does d stand for in the correlation equation?

• divide

• different

• distant

• difference

what would be the optimum pH for an enzyme in the stomach?

• 14

• 7

• 6

• 2

The minimum energy needed for an enzyme catalysed reaction to take place is known as

• collision theory

• catalytic energy

• activation energy

• Denatured energy

What piece of a circuit is shown?

• resistor

• LDR

• LED

• fuse

What is the optimum temperature shown by the graph

• 40

• 35

• 30

• 45

Which of the following would increase the rate of diffusion

• Higher temperature

• Smaller molecules

• larger surface area

• all 3