Selective toxicity should be avoided when developing a new antimicrobial drug.
Answer the following statement true (T) or false (F)
False
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Nematocysts are triggered to fire by ________
a. stimulation to the nerve net b. a voluntary action of the animal c. a touch to the lid d. a touch to the modified cilium trigger
The filtration rate at the Bowman's capsule is kept constant in response to small variations in blood
pressure by the actions of
a. the renin-angiotensin-aldosterone system. b. osmoreceptors. c. atrial natriuretic factor. d. the juxtaglomerular apparatus. e. antidiuretic hormone.
In spongy bone tissue, the spaces are filled with:
a. air b. blood c. cartilage d. red bone marrow e. lymph
In what way are single-celled slime mold amoebas and individual honeybees (social insects that live in colo-nies) alike?
a. Signals cause them to aggregate though they usually live alone. b. They are both examples of loss of complexity. c. Individuals always live in groups. d. Some individuals give up independent replication in the larger group.