The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "E"?
A. major site of ATP synthesis when oxygen is available
B. contains digestive enzymes
C. directs cellular activities, contains DNA
D. site of protein synthesis
E. outer boundary of cell, controls entry and exit of substances
B
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What is the correct order for the events that occur during a reflex?
a: Impulse travels through sensory neuron to the CNS b: A stimulus activates a receptor c: Information is processed by interneurons d: Motor neuron transmits impulse to effector e: Effector responds A. a, b, c, d, e B. b, a, c, d, e C. c, b, a, e, d D. c, a, b, d, e E. b, d, c, a, e
A patient is exhibiting several signs of acid-base imbalance. Blood tests reveal that blood pH is 7.5, and bicarbonate and carbon dioxide levels in blood are both low. What is the state of this patient?
A) respiratory acidosis with renal compensation B) metabolic acidosis with respiratory compensation C) respiratory alkalosis with renal compensation D) metabolic alkalosis with respiratory compensation E) Blood pH is normal.
During an isometric twitch in a skeletal muscle:
A. tension generated by the muscle always exceeds the load on the muscle. B. tetanus occurs. C. sarcomeres do not significantly shorten. D. the whole muscle shortens. E. H zones shorten.
Lymph nodes contain blood sinuses, and red and white pulp
Indicate whether the statement is true or false.