mocks <3

Question 1

species

Answer 1

a group of organisms that
can reproduce to produce fertile offspring

Question 2

binomial system of naming species

Answer 2

an internationally agreed system in which the
scientific name of an organism is made up of two
parts showing the genus and species

Question 3

magnification (Formula)

Answer 3

magnification = image size ÷ actual size

Question 4

diffusion

Answer 4

as the net movement
of particles from a region of their higher
concentration to a region of their lower
concentration (i.e. down a concentration
gradient), as a result of their random movement

Question 5

osmosis

Answer 5

as the net movement of
water molecules from a region of higher water
potential (dilute solution) to a region of lower
water potential (concentrated solution), through
a partially permeable membrane

Question 6

active transport

Answer 6

as the movement of
particles through a cell membrane from a region
of lower concentration to a region of higher
concentration (i.e. against a concentration
gradient), using energy from respiration

Question 7

catalyst

Answer 7

as a substance that increases
the rate of a chemical reaction and is not
changed by the reaction

Question 8

enzymes

Answer 8

as proteins that are involved
in all metabolic reactions, where they function as
biological catalysts

Question 9

photosynthesis

Answer 9

as the process by
which plants synthesise carbohydrates from raw
materials using energy from light

Question 10

word equation for photosynthesis

Answer 10

carbon dioxide + water → glucose + oxygen
in the presence of light and chlorophyll

Question 11

balanced chemical equation for
photosynthesis

Answer 11

6CO2 + 6H2O → C6H12O6 + 6O2

Question 12

chlorophyll

Answer 12

is a green pigment that is
found in chloroplasts

Question 13

physical digestion

Answer 13

as the breakdown of
food into smaller pieces without chemical change
to the food molecules

Question 14

chemical digestion

Answer 14

as the break down
of large insoluble molecules into small soluble
molecules

Question 15

bile

Answer 15

an alkaline mixture that
neutralises the acidic mixture of food and gastric
juices entering the duodenum from the stomach,
to provide a suitable pH for enzyme action

Question 16

transpiration

Answer 16

as the loss of water vapour
from leaves

Question 17

translocation

Answer 17

as the movement of
sucrose and amino acids in phloem from sources
to sinks

Question 18

circulatory system

Answer 18

as a system of
blood vessels with a pump and valves to ensure
one-way flow of blood

Question 19

coronary heart disease

Answer 19

in terms of
the blockage of coronary arteries

Question 20

Describe the process of clotting

Answer 20

as the conversion
of fibrinogen to fibrin to form a mesh

Question 21

pathogen

Answer 21

as a disease-causing
organism

Question 22

a transmissible disease

Answer 22

as a disease in
which the pathogen can be passed from one host
to another

Question 23

active immunity

Answer 23

as defence against a
pathogen by antibody production in the body

Question 24

antibodies

Answer 24

as proteins that bind
to antigens leading to direct destruction
of pathogens or marking of pathogens for
destruction by phagocytes

Question 25

passive immunity

Answer 25

is a short-term
defence against a pathogen by antibodies
acquired from another individual, including
across the placenta and in breast milk

Question 26

cholera

Answer 26

as a disease caused by a
bacterium which is transmitted in contaminated
water

Question 27

aerobic respiration

Answer 27

as the chemical
reactions in cells that use oxygen to break down
nutrient molecules to release energy

Question 28

State the word equation for aerobic respiration as

Answer 28

glucose + oxygen → carbon dioxide + water

Question 29

State the balanced chemical equation for aerobic
respiration as:

Answer 29

C6H12O6 + 6O2 → 6CO2 + 6H2O

Question 30

anaerobic respiration

Answer 30

as the chemical
reactions in cells that break down nutrient
molecules to release energy without using
oxygen

Question 31

State the word equation for anaerobic respiration
in yeast as:

Answer 31

glucose → alcohol + carbon dioxide

Question 32

State the balanced chemical equation for
anaerobic respiration in yeast as:

Answer 32

C6H12O6 → 2C2H5OH + 2CO2

Question 33

State the word equation for anaerobic respiration
in muscles during vigorous exercise as:

Answer 33

glucose → lactic acid

Question 34

e deamination

Answer 34

as the removal of the
nitrogen-containing part of amino acids to form
urea

Question 35

synapse

Answer 35

as a junction between two
neurones

Question 36

sense organs

Answer 36

as groups of receptor cells
responding to specific stimuli:

Question 37

hormone

Answer 37

as a chemical substance,
produced by a gland and carried by the blood,
which alters the activity of one or more specific
target organs
2 Identify in dia

Question 38

e homeostasis

Answer 38

as the maintenance of a
constant internal environment

Question 39

gravitropism

Answer 39

as a response in which
parts of a plant grow towards or away from
gravity

Question 40

Describe phototropism

Answer 40

as a response in which
parts of a plant grow towards or away from the
direction of the light source
3 Investigate and describe gravi

Question 41

drug

Answer 41

as any substance taken into the
body that modifies or affects chemical reactions
in the body

Question 42

e asexual reproduction

Answer 42

as a process
resulting in the production of genetically
identical offspring from one parent

Question 43

sexual reproduction

Answer 43

as a process
involving the fusion of the nuclei of two gametes
to form a zygote and the production of offspring
that are genetically different from each other

Question 44

fertilisation

Answer 44

as the fusion of the nuclei of
gametes

Question 45

self-pollination

Answer 45

as the transfer of pollen
grains from the anther of a flower to the stigma
of the same flower or a different flower on the
same plant

Question 46

pollination

Answer 46

as the transfer of pollen
grains from an anther to a stigma

Question 47

e cross-pollination

Answer 47

as the transfer of
pollen grains from the anther of a flower to the
stigma of a flower on a different plant of the
same species

Question 48

fertilisation (in humans)

Answer 48

as the fusion of the nuclei
from a male gamete (sperm) and a female
gamete (egg cell)

Question 49

a sexually transmitted infection (STI)

Answer 49

as
an infection that is transmitted through sexual
contact