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2024 BIOS252 Biology Comprehension Exam With Answers (50 Solved Questions)

2024 BIOS252 Biology Comprehension Exam With Answers provides in-depth past exam solutions, ensuring you understand each question and the best approach to answering it.

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    VERSION 4 BIOS 252 COMP EXAM WITH VERIFIED QUESTIONS AND ANSWERS Which type of synapse involves the secretion of a neurotransmitter across the synapse to stimulate the post-synaptic cell? A. Mechanical B. Nominal C. Electrotonic D. Processing E. Chemical - E. Chemical Your friend nods 'yes' to you, going through flexion, extension, and hyper extension in their enthusiastic response. This movement at the fulcrum represents a A. First-class lever system B. Second-class lever system C. Third-class lever system D. Fourth-class lever system E. Does not represent a lever system - A. First-class lever system The sarcoplasmic reticulum stores A. Oxygen B. Glycogen C. ATP

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    D. Calcium ions E. Glucose - D. Calcium ions Which of the following is NOT a function of smooth muscle tissue? A. Altering the diameter of the respiratory passageways B. Elevating hairs on the arm C. Blinking the eyelid D. Moving food materials along the digestive tract E. Moving urine from the kidneys into the bladder - C. Blinking the eyelid In an isometric contraction, the ,uncle develops tension but does not? A. Shorten B. Lengthen C. Expend energy D. Conduct electrical current E. Exhibit elasticity - A. Shorten When compared to a classic lever system, the synovial joints of our Musculoskeletal system play the role of the _________? A. Weight B. Force C. Fulcrum D. Lever E. Resistance - C. Fulcrum. Which of the following event will occur when depolarizing graded potential's reach the membrane of the axon Hillock, causing its membrane potential to reach threshold? A. Ligand-gated Ca++ channels close rapidly B. Voltage-gated Ca++ channels open rapidly C. Ligand-gated Na+ channels close rapidly

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    D. Voltage-gated Na+ channels open rapidly E. Ligand-gated Cl+ channels close rapidly - D. Voltage-gated Na+ channels open rapidly. The attachment of the muscles tendon to the stationary bone is called the _________? ; The attachment of the muscles other tendon to the movable bone is called the__________? A. Origin ; action B. Insertion ; action C. Origin ; insertion D. Stabilizer ; mover E. Insertion ; origin - C. Origin ; Insertion Which of the following fascicular arrangements would best be described as fascicles arranged on only one side of the tendon? A. Unipennate B. Bipennate C. Fusiform D. Circular E. Multipennate - A. Unipennate _________ is the summation of postsynaptic potentials in response to stimuli that occur at different locations in the membrane of a postsynaptic cell at the same time A. Cortical summation B. Spatial summation C. Temporal summation D. Tactile summation E. Olfactory summation - B. Spatial summation Which of the following molecules energizes the myosin club-head so that it can pull the actin molecule?

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    A. Troponin B. Tropomyosin C. Calcium D. Potassium E. ATP - E. ATP Which of the following muscles is the major agonist for plantar-flexion of the foot A. Gastrocnemius B. Tibialis anterior C. Triceps femoris D. Inferior rectus E. Peroneus - A. Gastrocnemius Which of the following is not a structural characteristic of long bones? A. Diaphysis B. Epicondyle C. Epiphysis D. Periosteum E. Endosteum - B. Epicondyle The storage and release of calcium and phosphorus is an example of which of the six main functions of the skeletal system A. Blood cell production B. Triglyceride storage C. Mineral homeostasis D. Support E. Protection - C. Mineral homeostasis Which of the following bone cells can best be described as bone-building cells

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