A human oocyte is normally fertilized in the: A. vagina B. uterus C. oviduct D.
ID: 85634 • Letter: A
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A human oocyte is normally fertilized in the: A. vagina B. uterus C. oviduct D. ovary The basic functional unit of excretion found in the kidney is the A. nephron B. glomerular (Bowman's) capsule C. glomerulus D. ureter E. both C and D All of the biochemical pathways in a cell constitute: A. coupling reactions B. metabolism C. free energy D. exergonic reactions only E. endergonic reactions only Which of the following are produced by reactions that take place in the thylakoids and consumed by reactions in the stroma? A. CO_2 and H_2O B. NADP^+ and ADP C. ATP and NADPH D. ATP, NADPH, and CO2 E. 0_2 and ATP What is the role of calcium in muscle contraction? A. its binding to a regulatory protein causes the protein to move, exposing action binding sites to the myosin heads B. it provides energy for contraction C. it blocks contraction when muscle relaxes D. it is the neurotransmitter released by a motor neuron, and it initiates an action potential in a muscle fiber E. it forms the heads of the myosin molecules in the thick filaments inside a muscle fiber which of the following would be a proposed mechanism by which stomach antacids work? A. Antacids dilute the solution, therefore lowering the pH B. Antacids contain moistly water and so they neutralize the solution C. Antacids are bases and by definition can OH^- out of a solution D. Antacids are bases and by definition can H^+ out of a solutionExplanation / Answer
68. D) Ovary
The ovary fertilises the oocyte as it passes through various stages during the same.
69. A) Nephron
Nephron is the basic structural and functional unit of the kidney and it regulates the water concentration along with the concentration of other soluble substances such as sodium salts .
70. A) coupling reactions
Cells couple two or more reactions such that the energy required to drive one reaction can compensate for the other.
71. C) ATP and NADPH
72. A) it's binding to the regulatory protein causes the protein to move , exposing actin binding sites to the myosin heads.
Calcium gets released in the fiber upon excitation for contraction and this results in its binding with troponin stimulating movement of tropomyosin that would expose the binding site of myosin.
73.
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