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AQA AS Biology Questions

Alex Lyes 40 perguntas 4,0 (1 avaliação) Atualizado em 11 jun 2017

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1During the Benedict's test for [blank_start]reducing[blank_end] sugars, copper(II) [blank_start]sulphate[blank_end] goes to copper(I) [blank_start]oxide[blank_end] and forms a [blank_start]red[blank_end] precipitate.
1. Areducing
2. Bsulphate
3. Coxide
4. Dred
2Maltose is formed from [blank_start]2[blank_end] [blank_start]alpha[blank_end] glucose
1. A2
2. B3
3. C4
4. Dalpha
5. Ebeta
3Sucrose is made from:
1. AGlucose + Glucose
2. BGlucose + Fructose
3. CGlucose + Galactose
4Glycogen is an [blank_start]energy[blank_end] source for [blank_start]animals[blank_end]. [blank_start]Starch[blank_end] is an energy source of plants. [blank_start]Celluose[blank_end] is a structural molecule for plants.
1. Aanimals
2. Benergy
3. CStarch
4. DCelluose
5. Ewater
6. Fplants
7. Gbacteria
5Starch has [blank_start]unbranched[blank_end] chains and has a [blank_start]helical[blank_end] structure which means it is compact. You test for starch with the [blank_start]iodine test[blank_end] which uses [blank_start]potassium iodide[blank_end] solution. A positive result is [blank_start]blue-black[blank_end].
1. Aunbranched
2. Bbranched
3. Chelical
4. Dlinear
5. Eiodine test
6. Femulsion test
7. Gbenedict's test
8. Hpotassium iodide
9. Iethanol
10. Jblue-black
11. Kred
12. Lcloudy precipitate
6Which is not a function of lipids:
1. AWaterproofing
2. BInsulating
3. CStructural support
4. DProtection
7Collagen is a globular protein.
1. AVerdadeiro
2. BFalso
8Water molecules are polar.
1. AVerdadeiro
2. BFalso
9Label this diagram of ATP
1. AAdenoside
2. BThymine
3. CRibose
4. DDyoxyribose
5. EPhosphate
6. FCalcium
7. GHydrogen
10What type of enzyme inhibition is this?
1. ACompetitive

11What type of enzyme inhibition is this?
1. ANon-competitive
12In DNA, the [blank_start]purine[blank_end] bases are adenine and guanine, and the [blank_start]pyrimidine[blank_end] bases are thymine and cytosine.
1. Apurine
2. Bpyrimidine
13DNA replicates conservatively.
1. AVerdadeiro
2. BFalso
14Label this diagram of a DNA nucleotide.
1. APhosphate
2. BDeoxyribose Sugar
3. CBase
4. DPhosphate
5. EDeoxyribose sugar
6. FBase
7. GPhosphate
8. HDeoxyribose sugar
9. IBase
15Which stage of mitosis is this?
1. AProphase
16Which stage of mitosis is this?
1. AAnaphase
17Label these organelles
1. AMitochondria
2. BNucleolus
3. CLysosome
4. DRough endoplasmic reticulum
5. ESmooth endoplasmic reticulum
6. FGolgi apparatus
7. GCytoplasm
8. HCell Surface Membrane
18Active transport is the movement of molecules or ions in or out of a cell from a region on [blank_start]lower[blank_end] concentration to a region of [blank_start]higher[blank_end] concentration using ATP and [blank_start]carrier[blank_end] proteins.
1. Alower
2. Bhigher
3. Ccarrier
19Which is not a physical barrier to pathogens
1. ASkin
2. BMucous membranes
3. CWhite blood cells
4. DGut flora
20Phagocytes are specific.
1. AVerdadeiro
2. BFalso
21The [blank_start]Cellular[blank_end] Immune Response:
1) Phagocyte becomes an [blank_start]antigen presenting cell[blank_end] after it has destroyed the pathogen
2) The antigen presenting cell releases cytokines and the helper [blank_start]T[blank_end] cell is activated
3) The helper T cell stimulates the production of [blank_start]cytotoxic[blank_end] T cells
4) Perforin is produced which cause [blank_start]lysis[blank_end] of the cells infected with pathogens
5) Exposure to the specific antigen causes [blank_start]memory[blank_end] cells to be produced
1. Alysis
2. Bmemory
3. Cantigen presenting cell
4. DCellular
5. Ecytotoxic
6. FT
7. GB
22[blank_start]Humoral[blank_end] Immune Response:
1) The phagocyte becomes an [blank_start]antigen presenting cell[blank_end] after it destroys the pathogen
2) The antigen presenting cell stimulates the helper T cell by releasing [blank_start]cytokines[blank_end]
3) The helper T cell stimulates the differentiation of [blank_start]B lymphocytes[blank_end]
4) Some B lymphocytes become [blank_start]plasma[blank_end] cells which release large quantities of specific [blank_start]antibodies[blank_end]
5) Some B lymphoctes become [blank_start]memory[blank_end] cells
1. AHumoral
2. Bantigen presenting cell
3. Ccytokines
4. DB lymphocytes
5. Eplasma
6. Fantibodies
7. Gmemory
23Select the statements that are true about Passive immunity
1. ANo memory cells formed
2. BIntroduction of antibodies from an outside source
3. CGeneraly long lasting
4. DNo direct contact with the pathogen required
5. EBodies own immune system is stimulated
24Select the statements that are true about Active immunity.
1. ABodies own immune system is stimulated to produce antibodies
2. BThere are 2 types - natural and artificial
3. CAntibodies come from an outside source
4. DLong lasting immunity
5. EShort lasting immunity
25In fish, the blood and water flow in [blank_start]opposite[blank_end] directions. This is called [blank_start]countercurrent[blank_end] flow. This means a diffusion gradient is maintained all the way along the gill lamellae so almost all the oxygen diffuses out of the [blank_start]water[blank_end] into the [blank_start]blood[blank_end].
1. Aopposite
2. Bcountercurrent
3. Cwater
4. Dblood
26Label this diagram of the lungs
1. ATrachea
2. BC-shaped cartilidge
3. CBronchi
4. DBronchioles
5. EAlveoli
27Which are not adaptations of the alveoli:
1. AThin walls
2. BSmall surface area
3. CRed blood cells are slowed as they pass through pulmonary capillary
4. DFluctuating blood supply
28A high affinity for oxygen in haemoglobin means that the haemoglobin takes up O2 less easily at lower partial pressures of O2.
1. AVerdadeiro
2. BFalso
29Label this diagram of the heart.
1. AAorta
2. BVena Cava
3. CPulmonary artery
4. DPulmonary vein
5. ELEFT
6. FRIGHT
7. GLeft atrium
8. HRight atrium
9. IRight ventricle
10. JLeft ventricle
11. KPulmonary valve
12. LAtrioventricular valve
13. MAortic valve
14. NApex
15. OCoronary artery
30Arteries have a [blank_start]thick[blank_end] muscular layer which can be constricted and dilated to control the volume of blood passing through them. They have a thick [blank_start]elastic[blank_end] layer which helps to maintain blood pressure by stretching and [blank_start]recoiling[blank_end]. The overall thickness of the artery help to prevent [blank_start]bursting[blank_end]. There are no [blank_start]valves[blank_end].
1. Athick
2. Bthin
3. Celastic
4. Drecoiling
5. Ebursting
6. Fvalves
31Veins have a [blank_start]thin[blank_end] muscular layer which can [blank_start]constrict[blank_end] to control the flow of blood. They have a thin elastic layer. They have very thin walls since the pressure is [blank_start]lower[blank_end] and means they can be flattened easily to aid the flow of blood. There are valves throughout which ensure the blood doesn't flow [blank_start]backwards[blank_end].
1. Athin
2. Bthick
3. Cconstrict
4. Dlower
5. Ehigher
6. Fbackwards
7. Gforwards
32Splicing removes the introns from pre-mRNA.
1. AVerdadeiro
2. BFalso
33The region of tRNA that is complementary to a codon on mRNA is called an [blank_start]anti-codon[blank_end].
1. Aanti-codon
34During meiosis, the chromosome number [blank_start]halves[blank_end] and [blank_start]4[blank_end] haploid cells are are genetically [blank_start]different[blank_end] are produced.
1. Ahalves
2. B4
3. Cdifferent
35Crossing over occurs during meiosis [blank_start]1[blank_end]
1. A1
36Mutagenic agents increase the [blank_start]rate[blank_end] of mutations.
1. Arate
37What is the amino acid sequence for this sequence of mRNA
UUC AGC GCG UAA
1. AAlanine, Serine, Alanine, Stop codon
2. BAlanine, Arginine, Alanine, Stop codon
3. CLeucine, Arginine, Alanine, Tyrosine
38A genetic bottleneck will [blank_start]reduce[blank_end] genetic diversity. It is an event which causes a big [blank_start]reduction[blank_end] in the population so will reduce the number of [blank_start]alleles[blank_end]. The survivors will reprodue and the larger population is created from [blank_start]a few[blank_end] indiviuals.
1. Areduce
2. Bincrease
3. Creduction
4. Drise
5. Ealleles
6. Fa few
7. Gmany
39Directional selection favours individuals with characteristics at the [blank_start]extremes[blank_end] of the population whereas stabilising selection favours individuals in the [blank_start]middle[blank_end] of the range when the environment [blank_start]isn't[blank_end] changing much.
1. Aextremes
2. Bmiddle
3. Cisn't
4. Dis
40Complete the table for the species: Ceyx azureus
1. AKingdom
2. BPhylum
3. CClass
4. DOrder
5. EFamily
6. FCeyx
7. Gazureus

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Descrição: A-Level Biology Quiz sobre AQA AS Biology Questions, criado por Alex Lyes em 10-06-2017.
Autor: Alex Lyes
Idioma: English
Visualizações: 547
Histórico: Criado em 10 jun 2017 · atualizado em 11 jun 2017
Etiquetas: aqa as biology a-level quiz biology a-level
Avaliação: 4,0 de 5 · 1 avaliação
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AQA AS Biology Questions

Perguntas do quiz (40)

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