AQA, January 2013 B2 past paper

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Created by: emmajane_
Created on: 28-02-14 16:26

DECAY- Why do holes in the side of a compost bin help waste materials to decay faster

Oxygen, let excess heat out, aerobic respiration of microorganisms

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DECAY- Why does putting decayed compost on soil around a plant help it to grow quicker?

compost contains minirals/ ions/ nutrients

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PHOTOSYNTHESIS- Some of the glucose is changed into insoluble starch during photosyntheses. What happens to the starch?

The starch is stored for use later

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PHOTOSYNTHESIS- What factor limits the rate photosynthesis?

Temperature

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BODY FUNCTIONS- Which organ in the body monitors the concentration of glucose (sugar) in the blood?

Pancreas

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BODY FUNCTIONS- what happens to amino acids that cannot be stored in the body

(amino acids) broken down, form urea, (amino acids broken down or urea) formed in liver, (urea / broken down amino acids) filtered by kidney

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CELLS- What makes a cell best adapted to increase diffision into or out of a cell?

larger surface area or larger membrane

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CELLS- Name an enzyme found in the salivery gland

amylase, carbohydrase

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CELLS- How are cells adapted to produce amylase?

Many ribsomes because they produce protein or many mitochondria because mitochondria provide energy to make protein

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GENETICS- Why should more eggs be be taken if a parent has a genetic disorder?

higher change of healthy baby or greater chance of fertilisation

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GENETICS- In someone who has cystic fibrosis the person’s mucus becomes thick. The diagram shows how, in a healthy person, cells at the lung surface move chloride ions into the mucus surrounding the air passages. The movement of chloride ions causes.

Diffusion, more concentration solution outside cell, partially permeable membrane

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LIPIDS- How does bile help the digestion of lipids in milk in the body

acid neutralised or conditions made neutral, emulsification or greater surface area, lipase work better

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Other cards in this set

Card 2

Front

DECAY- Why does putting decayed compost on soil around a plant help it to grow quicker?

Back

compost contains minirals/ ions/ nutrients

Card 3

Front

PHOTOSYNTHESIS- Some of the glucose is changed into insoluble starch during photosyntheses. What happens to the starch?

Back

Card 4

Front

PHOTOSYNTHESIS- What factor limits the rate photosynthesis?

Back

Card 5

Front

BODY FUNCTIONS- Which organ in the body monitors the concentration of glucose (sugar) in the blood?

Back

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AQA, January 2013 B2 past paper