Posts by 9As Exam Blog

OBJECTIVES 1. The following events occur during mitosis in a cell: I. Chromatids separate; II. Chromosomes become visible; III. Chromosomes align at the equator; IV. Cytoplasm divides (Cytokinesis). The correct sequence of the events is A. III, II, IV, I. B. II, III, I, IV. C. II, I, III, IV.…

OBJECTIVES Study the diagram below and use it to answer questions 1&2 1. To form a ball and socket joint, the structure labelled I fits into another structure in the scapula called the A. blade. B. glenoid cavity. C. olecranon fossa. D. patella. 2. The structure labelled II is called…

OBJECTIVES 1. The curvature movement of plants in response to the stimulus of water is called A. hydrotropism. B. geotropism. C. phototropism. D. thigmotropism. The diagrams below are illustrations of an experimental set-up to demonstrate a type of tropic response in plants. Study them and answer questions 2 & 3…

OBJECTIVES 1. Growth includes the following processes except A. differentiation. B. enlargement. C. mitosis. D. meiosis. 2. Two organelles directly involved in mitotic cell division are A. nucleus and mitochondrion. B. ribosome and w nucleus. C. centriole and golgi apparatus. D. nucleus and centriole. 3. Which of the following structures…

OBJECTIVES 1. The diagram below is an illustration of the human excretory system which of the labelled parts contains the highest amount of nitrogenous waste? A. I. B. II. C. IV. D. VI.   2. A substance present in the glomerular filtrate in the mammalian kidney is A. glucose. B.…

OBJECTIVES 1. In cellular respiration energy is made available to organisms by A. removal of a phosphate group from ADP. B. breaking off a phosphate group from ATP. C. adding a phosphate group to glucose. D. breaking off a hydrogen ion from NADPH. 2. Respiration is an essential life process…

OBJECTIVES 1. Pepsin is secreted as an inactive precursor called pepsinogen because A. pepsin as an enzyme is quickly destroyed by the alkaline food from the mouth. B. all digestive enzymes pass through a precursor stage. C. pepsin is a proteolytic enzyme and might attack the stomach tissues. D. pepsin…