Test
Biology - B2 - AQA - GCSE - Exam Style Questions
Preguntas del test (22)
1Name the product of protein digestion.
- AAmino acid
- BProtease
- CHydrochloric Acid
2What is an allele?
- AA variation of a gene
- BA type of gene
- CA mutated cell
- DThick, jelly like substance in the nucleus
3Select the process that is NOT done by diffusion
- AWater loss from leaves/transpiration
- BGlucose molecules absorbed
- CGas exchange - Carbon dioxide out, oxygen in
- DMoving particles (e.g mineral ions) against the concentration gradient
4Pepsin is made by the stomach.
Name the acid made by the stomach that allows pepsin to work well.- AAmino acid
- BHydrochloric acid
- CNitric acid
5Which of the following is NOT a process done by diffusion?
- ATaking in substances for use in cell processes
- BRemoving products of cell processes
- CCarrying oxygen around the body
6What type of enzyme digests dietary fats?
- ALipase
- BProtease
- CAmylase
- DCarbohydrase
- ENothing
7Diffusion is the movements of molecules through a fully permeable membrane against the concentration gradient.
- AVerdadero
- BFalso
8Name the process that makes lactic acid in an athlete's muscles.
- AAnaerobic respiration
- BAerobic respiration
- CUrination
- DNothing
9In 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.- ASupplies oxygen which allows respiration meaning more energy for growth and active transport.
- BChanges the volume of the solution to trick the plant into not transpiring (losing water)
- CChanges the concentration to allow diffusion
10Which type of enzyme digests protein?
- AProtease
- BAmylase
- CLipase
- DCarbohydrase
11Each molecule of chlorophyll contains a magnesium ion.
Why do plants need magnesium ions for healthy growth?- ATo make chlorophyll which traps light and uses it for energy in photosynthesis.
- BTo make chlorophyll which can be processed and made into glucose for the plant
- CTo make the sap vacuole inside plant cells.
12Name one ion that plants take in to supply them with nitrogen.
- ANitrate
- BAir
- CCarbon dioxde
- DMinerals
13Why is more lactic acid made in the muscles when running at 14 km per hour than when running at 8 km per hour?
- AMore energy is needed and there is not enough oxygen getting to cells so more anaerobic respiration.
- BThe runner needs more energy so food is digested quicker, lactic acid is produced as a byproduct of this.
- CMore energy is needed but there is not enough oxygen getting to cells so more aerobic respiration.
14What is meant by a recessive allele?
- AOnly expressed if dominant allele is not present.
- BOnly expressed if dominant allele is present.
- COnly expressived if there is one.
15Early life forms were soft-bodied.
Explain why this makes it difficult for scientists to be certain about what these early life forms were like.- AFossils destroyed due to soft parts decaying.
- BNo evidence.
- CThey were eaten, they rarely died of natural causes.
16Plants need a supply of the element nitrogen to make certain substances.
Select the substance that nitrogen does NOT make.- AProtein
- BAmino acids
- CEnzymes
- DGlucose
17Students 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- ARepeating the experiment several times
- BPlacing the quadrat elsewhere along the shore
- CGetting a larger quadrat
18Which type of enzyme digests carbohydrates?
- AProtease
- BCarbohydrase
- CLipase
- DUrine
19During IVF treatment, each fertilised egg cell forms an embryo by cell division.
What is this type of cell division?- AMeiosis
- BMitosis
- CCloning
20Genetic material is made up of large molecules of a chemical substance.
What is this chemical substance?- ADNA
- BAmino acid
- CGlucose
21A 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.- AMeans it is closer to the light, so more photosynthesis
- BMore minerals at the surface of the water for it to absorb
- CThere is less carbon dioxide at the surface of the water, meaning more oxygen for photosynthesis
22There are a number of reasons why organisms may not mate sucessfully.
Select the odd one out.- AThey are different sexes
- BIt is not mating season
- CThey do not find each other attractive
- DThey are juvenile
Información
- Descripción
- Biology practice questions for B2.
- Autor
- Josh Anderson
- Idioma
- English
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