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Biology 20 Unit D Exam Questions and Answers 100% Pass £9.63
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Biology 20 Unit D Exam Questions and Answers 100% Pass
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Biology 20 Unit D Exam Questions and Answers 100% Pass Actin - A protein that, along with myosin, is the chief component of muscle; makes up the thin filament of a muscle fibre. Aldosterone - A type of mineralocorticoid hormone secreted by the adrenal cortex; stimulates the distal tubule and c...

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  • January 8, 2025
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Biology 20 Unit D Exam Questions and
Answers 100% Pass

Actin - ✔✔A protein that, along with myosin, is the chief component of muscle; makes up the thin

filament of a muscle fibre.


Aldosterone - ✔✔A type of mineralocorticoid hormone secreted by the adrenal cortex; stimulates the

distal tubule and collecting duct of the kidneys to increase the absorption of sodium into the bloodstream,

which is followed by the passive absorption of water and chloride.


Anabolic - ✔✔Compound-synthesizing metabolic reaction.


Antibody - ✔✔Proteins that recognize foreign substances in the body and neutralize or destroy them.


Antidiuretic Hormone - ✔✔Hormone regulated by the hypothalamus and released by the pituitary gland

that increases the permeability of the distal tubule and the collecting duct in the nephrons of the kidneys,

allowing more water to be reabsorbed into the blood from the filtrate.


Arterial Pressure - ✔✔The pressure blood exerts on artery walls.


Atrophy - ✔✔A reduction in size, tone, and power in muscle.


Bladder - ✔✔The organ where urine is stored before being discharged by the urethra.


Bowman's Capsule - ✔✔In the kidney, cap-like formation at the top of each nephron that serves as a

filtration structure; surrounds the glomerulus.


Catabolic - ✔✔Compound-decomposing metabolic reaction.




Author. Emily Charlene, ©2025 All Rights Reserved.

, 2|Page


Catalyze - ✔✔To increase the rate of reaction.


Cell-Mediated Immunity - ✔✔Non-specific component of the immune system that involves the activation

of white blood cells, specifically macrophages, neutrophils, and monocytes, rather than the production of

antibodies.


Chemoreceptor - ✔✔Sensory receptor that is sensitive to chemical stimulation; e.g. taste, smell, and blood

pH.


Chyme - ✔✔Thick liquid formed by mixing food with gastric juice in the stomach.


Cilia - ✔✔Small, hairlike organs on the surface of some cells, particularly cells lining the upper

respiratory tract.


Coagulation - ✔✔The process where a damaged blood vessel wall is covered by a platelet and fibrin-

containing clot to stop the bleeding and begin repair on the damaged vessel.


Congenital - ✔✔Appearing at birth due to a heredity/genetic abnormality or from complications during

pregnancy.


Connective Tissue - ✔✔The material between the cells of the body that gives tissues form and strength.

This tissue is also involved in delivering nutrients.


Countercurrent Heat Exchange - ✔✔A mechanism used to transfer heat from one flowing current of fluid

to another across a semi-permeable membrane. Birds use this between blood vessels in their legs to keep

heat concentrated within their bodies.


Constrict - ✔✔To make smaller or narrower, especially in one place, by squeezing. Blood vessels will do

this to reduce blood flow.


Dehydration - ✔✔A relative deficiency of water molecules in relation to other dissolved solutions; can be

caused by blood loss, vomiting, excess exertion, or malnutrition.



Author. Emily Charlene, ©2025 All Rights Reserved.

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