5296484
Description
Question 1
Question
Name the product of protein digestion.
Answer
-
Amino acid
-
Protease
-
Hydrochloric Acid
Question 2
Question
What is an allele?
Answer
-
A variation of a gene
-
A type of gene
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A mutated cell
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Thick, jelly like substance in the nucleus
Question 3
Question
Select the process in the body that is NOT done by diffusion
Answer
-
Water loss from leaves/transpiration
-
Glucose molecules absorbed
-
Gas exchange - Carbon dioxide out, oxygen in
-
Moving particles (e.g mineral ions) against the concentration gradient
Question 4
Question
Pepsin is made by the stomach.
Name the acid made by the stomach that allows pepsin to work well.
Answer
-
Amino acid
-
Hydrochloric acid
-
Nitric acid
Question 5
Question
Which of the following is NOT a process done by diffusion?
Answer
-
Taking in substances for use in cell processes
-
Removing products of cell processes
-
Carrying oxygen around the body
Question 6
Question
What type of enzyme digests dietary fats?
Answer
-
Lipase
-
Protease
-
Amylase
-
Carbohydrase
-
Nothing
Question 7
Question
Diffusion is the movements of molecules through a fully permeable membrane against the concentration gradient.
Answer
- True
- False
Question 8
Question
Name the process that makes lactic acid in an athlete's muscles.
Answer
-
Anaerobic respiration
-
Aerobic respiration
-
Urination
-
Nothing
Question 9
Question
In a hydroponic system (when farmers grow crops in greenhouses with no soil) an air pump and airstone makes bubbles of air in a solution of ions. Gases from the air will dissolve into the solution.
Explain how this helps keep the plant's root alive.
Answer
-
Supplies oxygen which allows respiration meaning more energy for growth and active transport.
-
Changes the volume of the solution to trick the plant into not transpiring (losing water)
-
Changes the concentration to allow diffusion
Question 10
Question
Which type of enzyme digests protein?
Answer
-
Protease
-
Amylase
-
Lipase
-
Carbohydrase
Question 11
Question
Each molecule of chlorophyll contains a magnesium ion.
Why do plants need magnesium ions for healthy growth?
Answer
-
To make chlorophyll which traps light and uses it for energy in photosynthesis.
-
To make chlorophyll which can be processed and made into glucose for the plant
-
To make the sap vacuole inside plant cells.
Question 12
Question
Name one ion that plants take in to supply them with nitrogen.
Answer
-
Nitrate
-
Air
-
Carbon dioxde
-
Minerals
Question 13
Question
Why is more lactic acid made in the muscles when running at 14 km per hour than when running at 8 km per hour?
Answer
-
More energy is needed and there is not enough oxygen getting to cells so more anaerobic respiration.
-
The runner needs more energy so food is digested quicker, lactic acid is produced as a byproduct of this.
-
More energy is needed but there is not enough oxygen getting to cells so more aerobic respiration.
Question 14
Question
What is meant by a recessive allele?
Answer
-
Only expressed if dominant allele is not present.
-
Only expressed if dominant allele is present.
-
Only expressived if there is one.
Question 15
Question
Early life forms were soft-bodied.
Explain why this makes it difficult for scientists to be certain about what these early life forms were like.
Answer
-
Fossils destroyed due to soft parts decaying.
-
No evidence.
-
They were eaten, they rarely died of natural causes.
Question 16
Question
Plants need a supply of the element nitrogen to make certain substances.
Select the substance that nitrogen does NOT make.
Answer
-
Protein
-
Amino acids
-
Enzymes
-
Glucose
Question 17
Question
Students did an experiment to find out where different types of seaweed live on a seashore. They used quadrats.
Which of the following would NOT improve their investigation to ensure they produced valid data?
SE
Answer
-
Repeating the experiment several times
-
Placing the quadrat elsewhere along the shore
-
Getting a larger quadrat
Question 18
Question
Which type of enzyme digests carbohydrates?
Answer
-
Protease
-
Carbohydrase
-
Lipase
-
Urine
Question 19
Question
During IVF treatment, each fertilised egg cell forms an embryo by cell division.
What is this type of cell division?
Answer
-
Meiosis
-
Mitosis
-
Cloning
Question 20
Question
Genetic material is made up of large molecules of a chemical substance.
What is this chemical substance?
Answer
-
DNA
-
Amino acid
-
Glucose
Question 21
Question
A bladder wrack (a type of seaweed) has many air bladders.
The air bladders help the bladder wrack to float upwards when the sea covers it.
Suggest how this helps the bladder wrack to survive.
Answer
-
Means it is closer to the light, so more photosynthesis
-
More minerals at the surface of the water for it to absorb
-
There is less carbon dioxide at the surface of the water, meaning more oxygen for photosynthesis
Question 22
Question
There are a number of reasons why organisms may not mate sucessfully.
Select the odd one out.
Answer
-
They are different sexes
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It is not mating season
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They do not find each other attractive
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They are juvenile
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