Match Each Term with Its Correct Definition

B3 Keywords

Match each term with its correct definition

1. Active Transport

1. Smallest blood vessel. Walls are one cell thick

1. Aerobic

1. Measure of how far food travels from where it has been produced

1. Alveoli

1. The external surface of an organism

1. Anaerobic

1. Artery that supplies oxygen and glucose to cardiac muscle

1. Aorta

1. The drooping of a plant caused when water loss by transpiration exceeds water uptake

1. Artery

1. Hormone produced by the pancreas that converts glycogen into glucose

1. Biconcave disc

1. Without oxygen

1. Biodiversity

1. Drug which suppresses the immune system to prevent rejection of a transplanted organ

1. Biofuel

1. Pigment found in red blood cells which transports oxygen

1. Biogas

1. Lacking in oxygen

1. Capillary

1. Finger-like projection found in the small intestine that increase its surface area, to allow the faster absorption of digested food

1. Carbon neutral

1. Inability to produce insulin

1. Concentration gradient

1. Compound formed when haemoglobin transports oxygen

1. Coronary artery

1. Main artery leaving the left ventricle

1. Deforestation

1. The movement of water through a partially permeable membrane from an area of low concentration to an area of high concentration

1. Deoxygenated

1. Pairs of cells mainly in the lower epidermis that control the opening & closing of stomata

1. Diabetes – Type 1

1. Organ that secretes the hormones insulin and glucagon into the blood stream

1. Diabetes - Type 2

1. The movement of substance against a concentration gradient, requires energy

1. Dialysis

1. Fuel produced by the anaerobic breakdown of organic waste by bacteria

1. Diffusion

1. Hole in epidermis that allows gases to enter a leaf, but also allows water vapour to leave (transpiration)

1. Food miles

1. Maintaining constant internal condition s in the body e.g temperature

1. Global Warming

1. Loss of water vapour though the stomata

1. Glucagon

1. Important gas in biofuel, also a cause of global warming

1. Glycogen

1. Specialised cell with a large surface area to allow absorption of water and minerals ions

1. Guard cells

1. Thin walled structures with a large surface area where gaseous exchange occurs

1. Haemoglobin

1. Presence of specific antigens on the surface of cells that can produce an immune response

1. Homeostasis

1. The number and variety of organisms found in an area

1. Hypothermia

1. Large molecule produced to store glucose in the liver & muscles

1. Immunosuppressant

1. Produced by the kidneys contains urea, excess water and ions

1. Insulin

1. Change in concentration from one area to another

1. Methane

1. The movement of specific, useful substances into the blood from the kidney tubule.

1. Mycoprotein

1. The artificial removal of urea & excess ions/water from the blood

1. Osmosis

1. Toxic waste product produced in the liver from the breakdown of excess amino acids

1. Oxyhaemoglobin

1. With oxygen

1. Pancreas

1. Raising of the Earth’s temperature due to CO2 & methane

1. Partially permeable

1. Blood supply to surface capillaries is increased to increase heat loss by the dilation of arterioles

1. Root hair cells

1. Often caused by obesity, insulin produced but cells do not respond to it. Controlled by diet & exercise

1. Selective reabsorption

1. Transplantation of organs from one species to another

1. Stomata

1. Liquid fuel produced from biological material e.g maize & sugar cane. It is renewable & sustainable

1. Surface area

1. A waterproof layer present in some leaves to reduce water loss by evaporation

1. Thorax

1. Constriction of arterioles that reduces blood flow to surface capillaries to reduce heat loss by radiation

1. Tissue type

1. Removal of forests by felling, burning etc.

1. Transpiration

1. Upper part of the human torso, contains the lungs and heart

1. Urea

1. Protein rich food produced by the growth of fungi

1. Urine

1. Thick walled blood vessel that transports blood away from the heart

1. Villi

1. Condition in which the body temperature falls below the normal

1. Wilting

1. Hormone produced by the pancreas that lowers blood glucose levels – converts glucose into glycogen

1. Vasoconstriction

1. Process that produces as much CO2 as it uses

1. Vasodilation

1. Describes a structure that allows the movement of some molecules through it, but prevents other substances

1. Waxy cuticle

1. Movement of particles from a high concentration to a low concentration down a concentration gradient

1. Xenotransplantation

1. Shape of a red blood cell, provides a large surface area compared to volume