Which of the following is true about attenuated vaccines?
a. They run a high risk of causing a full-blown case of the disease.
b. One vaccine can prevent a multitude of infectious diseases.
c. They lead to better and longer-lasting immunity.
d. They lead to less-effective and shorter immunity.
c. They lead to better and longer-lasting immunity.
Attenuated vaccines, in which a live-virus is weakened in a laboratory, lead to better and longer- lasting immunity. However, there is a low risk of back mutation, in which the virus returns to its full, disease-causing form.
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Hominins are
A. all forms of humans, extinct and extant. B. arboreal primates. C. the lesser apes. D. chimpanzees and gorillas.
A biologist who searches for explanations about natural phenomena solely to satisfy her curiosity and advance our
collective knowledge of living systems practices ____.
a. artificial science b. basic research c. general research d. applied research e. simple research
The form of asexual reproduction used by a hydra is called __________. Fill in the blank(s) with the appropriate word(s)
A(n) ________ is a special type of lysosome used by a cell to selectively digest and recycle cytoplasmic contents, such as mitochondria.
A. autophagosome B. turnover lysosome C. recycling vacuole D. suicide vacuole