Biology Examination: ATP, Active Immunity, Allele, Anaphase, Apoptosis, Aquaporin, Autonomic Nervous System, Axon Hillock, Bacillus, Bacteriophage, Basophil, Bohr Effect, Carbon Fixation, Cardiac Muscle, Cell Differentiation, Cell Membrane, Centriole, Chl

Biology Examination: ATP, Active Immunity, Allele, Anaphase, Apoptosis, Aquaporin, Autonomic Nervous System, Axon Hillock, Bacillus, Bacteriophage, Basophil, Bohr Effect, Carbon Fixation, Cardiac Muscle, Cell Differentiation, Cell Membrane, Centriole, Chloroplast, Chromatin, Chromosome, Codon, Cytokinesis, Cytoskeleton, Endoplasmic Reticulum, Enzyme Active Site, Glycolysis, Mitochondrion, Phagocytosis, Photosystem II, Plasma Membrane, Ribosome, RNA Polymerase, Thylakoid: Molecular, Cellular, Genetic, and Physiological Processes of Life Exam Questions Verified and Provided with Complete A+ Graded Rationales Latest Updated 2026 Abductor A muscle that moves a limb away from the cebter of the body Absorption The process by which substances are taken up into or across tissues Acetylcholine A neurotransmitter found throughout the nervous system (somatic motor neurons, preganglionic parasympathetic and sympathetic nerves, and postganglionic parasympathetic neurons); metabolized by acetylcholinesterase. Acrosome The large vesicle at the head of a sperm cell containing enzymes that degrade the ovum cell membrane to allow fertilization Actin A protein found in the cytoskeleton and muscle cells; it is the principle constituent of the thin filaments and microfilaments Action potential An abrupt change in the membrane potential of a nerve or muscle caused by changes in membrane ionic permeability; results in a conduction of an impulse in nerves or contraction in muscles Active immunity An immune response (antibody production or cellular immunity) acquired in response to exposure to an antigen Active site Substrate-binding region of an enzyme Adaptation The development of characteristics that enable an organism to survive and reproduce in its habitat Adaptive immunity Highly specific form of immunity that retains chemical memory of each invader encountered and is able to tailor the immune response to the specific pathogen Adaptive radiation The evolutionary process by which one species gives rise to several species, each specialized for different nic