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A | B | C | D | E | F | G | H | I | J | K | L | M N | O | P | Q | R | S | T | U | V | W | X | Y | Z BiologyAAbsorption: This is the movement of food into the bloodstream. Alkaline pyrogallol: This is used to absorb oxygen. Amylase: This is an enzyme. It is found in saliva. It breaks starch
down into maltose. Antagonistic muscles: A pair of skeletal muscles that work together.
When one contracts the other relaxes, e.g. the biceps and triceps. Asexual reproduction: Reproduction that does not involve gametes. Assimilation: This is the using of the food by the cells of the body after absorption. BBenedict's solution: This is used to test for a reducing sugar
e.g. glucose. If a reducing sugar is present it turns brick red after
being heated in a boiling water bath. Breathing: This is a physical process of taking in oxygen and breathing back out carbon dioxide. CCarnivore: An animal that only eats other animals. Carpel: The female part of the flowering plant. It is made up
of the stigma, style and ovary. Catalyst: A chemical that speeds up or slows down chemical reactions. Cell wall: Structure found outside the cell membrane in plant
cells. Cell walls are absent in animal cells. Chlorophyll: The green pigment found in the chloroplasts of plant
cells. It is used in photosynthesis. Competition: This is the struggle between organisms to gain a
sufficient supply of a scarce resource e.g. Grasses and dandelions compete
for water. Conservation: This is the wise use of the environment: DDigestion: This is the breaking down of food into small soluble
pieces. Dispersal: The dispersal of seeds is the scattering of seeds. The advantage of dispersal is that it helps reduce competition. EEgestion: The getting rid of unused, undigested and unabsorbed
food material Endocrine glands: A ductless gland that releases hormones directly
into the bloodstream, e.g. the pancreas (it releases insulin which controls
blood sugar level). Excretion: This is the getting rid of waste products from chemical reactions in the body. FFood chain: A food chain is a feeding relationship between organisms
through which energy is transferred. Food web: A food web is a number of interconnected food chains. GGamete: A gamete is a sex cell. The male gamete is the sperm and
the female gamete is the egg. Genetics: This is the study of inheritance. Geotropism: The growth of a plant in response to gravity. Germination: Germination is the growth of a seed into a new plant. The requirements are warmth, moisture and oxygen. HHabitat: The place where a plant or animal lives is called its
habitat. Haemoglobin: The red pigment in red blood corpuscles. It is involved
in transporting oxygen. Herbivore: An animal that eats only plants. Hormone: A chemical substance that is released by an endocrine
gland. Humus: The organic material of soil. It is formed from decomposing plants and animals. IImplantation: This is when the embryo attaches itself to the womb
wall. Ingestion: This is the taking in of food into the mouth. Iodine solution: This is used to test for starch. If starch is
present it turns blue-black. Iris: The iris controls the amount of light entering the eye. JJoint: This is where two or more bones meet. LLeaching: The washing of minerals out of the soil. Ligaments: Fibres that connect bone to bone. Lime water: This is used to test for the presence of carbon dioxide. If carbon dioxide is present the lime water turns milky. MMotor nerve: A nerve that carries messages away from the brain and spinal cord. NNutrient agar: This is used as a food supply for bacteria and fungi in the lab. OOmnivore: An animal that eats plants and animals. Organ: A group of tissues working together e.g. heart. Ovulation: This is the release of an egg from an ovary. PPhloem: This is a plant transport tissue. It transports food from
where it is made to other parts of the plant. Photosynthesis: This is the process in which green plants make
food. Phototropism: The growth of a plant in response to light. Placenta: The structure that binds the developing baby to the
wall of the womb. It allows nutrients and waste to be exchanged. Pollination: This is the transfer of pollen from the anther of
the stamen to the stigma of the carpel. Pollution: This is where things such as oil, sewage, slurry, sulphur
dioxide, nitrogen oxides and litter damage the environment. Pooter: A piece of equipment used to collect small animals. Producer: An organism that can make its own food. RRespiration: This is a chemical process where energy is released
from food. Retina: The light sensitive layer at the back of the eye. SSensory nerve: A nerve that carries messages to the brain and
spinal cord. Soda lime: This is used to absorb carbon dioxide. Stamen: The male part of the flowering plant. It is made up of
the anther and filament. Stomata: These are pores (openings) in the leaves of a plant,
which allows gases to diffuse. Synovial fluid: A lubricating fluid found at a joint. It helps
reduce friction. System: A group of organs working together e.g. digestive system. TTendons: Fibres that attach muscle to bone. Tissue: A group of similar cells e.g. muscle. Transpiration: This is the loss of water vapour from the surface
of a plant. It is highest when there is a gentle breeze, sun and low humidity. Trophic level: The position an organism occupies in a food chain. Tropism: A growth response to a stimulus. Tullgren funnel: A piece of equipment used to extract small animals from leaf litter or soil. XXylem: This is a plant transport tissue. It transports water and minerals from the roots to other parts of the plant. ZZygote: The cell, which results from the fusion of a male and
female gamete. |