Covers all of the chapters and content within AS Biology for OCR Biology A. Easy to use and nearly 200 cards available for studying. Very handy when you want to practise quick-fire questions with friends or revise your own knowledge. (Order of content taught can vary between schools, so some chapte...
OCR A Biology H420 - 2.1.5 - Biological Membranes (Chapter 5) Short Summary Notes
Respiration notes or OCR biology A level
Biodiversity revision notes for Biology A level OCR
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Biology A
Unit 1
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Q: Which phrase describes the level of energy
Q: What term describes a protein secondary Q: What name is given to the frequency of required to enable a reaction to take place?
structure – a right-handed spiral held in place by occurrence of plants in a sampled area, such as a Enzymes reduce this to allow a reaction to
hydrogen bonds between adjacent C=O and NH quadrat? proceed.
groups? A: Abundance A: Activation energy
A: α-helix
Q: What term describes the protection that is Q: What is the name given to the area on an Q: What is the name given to the movement of
acquired by activation of the immune system? enzyme molecule to which the substrate binds? substances across membranes against their
concentration gradient, requiring the use of energy
A: Active immunity A: Active site in the form of ATP; usually involving the use of
transport proteins?
A: Active transport
Q: What name is given to the square frame used Q: Which word describes the feature of a living Q: Which nitrogen-containing organic base
for sampling in fieldwork? organism that increases its chances of survival, for found in nucleic acids pairs with thymine in DNA
example thick fur on an animal that lives in a cold and with uracil in RNA?
A: A Quadrat habitat?
A: Adenine
A: Adaptation
Q: Which organic compounds are monomers of
Q: Which word describes the force of attraction Q: What is the name of the small air sacs in the protein molecules which contain amino and
between molecules of two different substances. lungs? carboxyl groups?
A: Adhesion A: Alveoli A: Amino acids
Q: What is the name of the enzyme that catalyses Q: What name is given to part of a starch Q: What is the name of the stage in mitosis when
the hydrolysis of starch to maltose? molecule, consisting of many thousands of the newly separated chromatids are pulled
glucose residues bonded together? towards opposite poles of the nuclear spindle?
A: Amylase
A: Amylose A: Anaphase
Q: What is the word which describes a result or Q: Which molecules produced by Q: What is the name given to protein molecules
data point that does not appear to fit the pattern of microorganisms, kill or limit the growth of other released by the immune system in response to an
the other results? microorganisms? antigen, which are capable of neutralising the
effects of the antigen?
A: Anomalous A: Antibiotics
A: Antibodies
Q: What name is given to a foreign molecule Q: What name is given to the route taken by Q: What name is given to the process of
(which may be protein or glycoprotein) that can water between the cells or through the cell walls deposition of fatty substances in the lining of
provoke an immune response? in a plant? arteries to form an atheroma?
A: Antigen A: Apoplast pathway A: Atherosclerosis
Q: Which name describes the protection acquired Q: What name is given to the patch of tissue in Q: What is the name of the test for reducing
as a result of deliberate exposure to antigens or by the septum of the heart that conducts the electrical sugars?
the injection of antibodies? stimulus from the atria in the heart through to the
Purkyne fibres? A: Benedict’s test
A: Artificial immunity
A: Atrioventricular node
Q: What is the system of naming living things Q: Which word describes the number and variety Q: What is the biochemical test for the presence
using two Latin words – the genus name and the of living things to be found on earth, in an of proteins?
specific name? ecosystem or in a habitat?
A: Biuret test
A: Binomial system A: Biodiversity
, Q: What name is given to specialised sex cells? In Q: Define the term ‘Gene’? Q: What name is given to the total genetic
many organisms they are haploid and are information possessed by the reproductive
produced by meiosis. A: A length of DNA that codes for one (or members within a population of organisms?
more) polypeptides/proteins.
A: Gametes A: Gene pool
Q: What is the name of the plant tissue in the Q: What name is given to Eukaryotic cells or
Q: What name is given to the effect of carbon stem and root that contains meristematic cells? organisms having only one set of chromosomes?
dioxide concentration on the affinity of Denoted by n.
haemoglobin for oxygen? A: Cambium
A: Haploid
A: Bohr shift / Bohr effect
Q: What name is given to the molecule resulting Q: What is the name of the airways in the lungs Q: Which word describes a specific position on a
from combination of carbon dioxide and that lead from the bronchi to the alveoli? chromosome, occupied by a specific gene?
haemoglobin?
A: Bronchioles A: Locus
A: Carbaminohaemoglobin
Q: What name is given to the class of biological Q: Which term describes the waterproof band of
Q: What term describes an alternative version of a molecules with the general formula Cx(H2O)y? suberin in the cell walls of root endodermis cells
gene? which blocks the apoplast pathway?
A: Carbohydrates
A: Allele A: Casparian strip
Q: What is a substance that increases the rate of a Q: Which term describes the processes that lead Q: What is the name of the carbohydrate polymer
reaction but does not take part in the reaction, and to communication and coordination between made from β-glucose that forms plant cell walls?
so is re-usable? cells? Hormones binding to their receptors on the
cell surface membrane are an example. A: Cellulose
A: Catalyst A: Cell signalling
Q: What is the name of the organelle from which Q: Which word describes having two sets of Q: What is the name of the region of a
the spindle fibres develop during cell division in chromosomes (eukaryotic cell or organism). chromosome where two sister chromatids are
animal cells? Denoted by 2n. joined together, and where the spindle fibre
attaches during cell division.
A: Centriole A: Diploid
A: Centromere
Q: What name is given to the movement of Q: Which lipid molecule found in all cell
chloride ions into red blood cells to balance the Q: What is the name of pigments found in membranes fits between the phospholipid
loss of hydrogencarbonate ions? chloroplasts of plant (and some protoctist) cells? molecules making the membrane less fluid and
more rigid?
A: Chloride shift A: Chlorophyll
A: Cholesterol
Q: What short extensions of eukaryotic cells, Q: What name is given to the organisation of Q: What is the name of the cell formed during
typically 2–10 µm long and 0.03 µm in diameter living organisms (or other items) into groups sexual reproduction from the fusion of two
are used for locomotion or to move fluids or according to their shared similarities? gametes?
mucus over a surface?
A: Classification A: Zygote
A: Cilia
Q: What are clones? Q: What word describes the attraction between Q: Which structural fibrous protein found in
water molecules due to hydrogen bonding? connective tissue, bones, skin and cartilage
A: Genetically identical cells or individuals. accounts for 30% of your body’s protein?
A: Cohesion
A: Collagen
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