Many eukaryotes have myosin 2, but only __________ use it to build muscle
Fill in the blank with the correct word.
Answer: animals
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Which of the following is NOT normally a route of transmission of HIV/AIDS?
A. Via breast milk during lactation B. Across the placenta from an infected mother to her fetus during pregnancy or delivery C. Kissing or contact with items contaminated by the saliva of an infected individual D. Transfer of contaminated blood or blood products from one person to another E. Unprotected sexual intercourse with an infected partner
Answer the following statements true (T) or false (F)
1. The endosteum is more interior (deep) than the periosteum. 2. Both bone and cartilage are examples of connective tissue. 3. The central canal of the osteon is also called the medullary cavity. 4. The terms osteon and Haversian system refer to the same structure. 5. Osteocytes can be found in the lacunae of the osteon.
Which factor would result in bronchoconstriction?
a. sympathetic stimulation. b. secretion of acetylcholine c. epinephrine secretion. d. increased carbon dioxide concentration. e. none of these answers.
Solutes that cannot freely pass through a membrane are said to be ________.
A. osmotically inactive B. osmotically active C. selectively permeable D. hypertonic