Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called ________.
A. prions
B. delta agents
C. viroids
D. oncogenic
E. latent
Answer: E
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In a leaf, where are the most chloroplasts
found?
a. the phloem b. the palisade mesophyll c. the spongy mesophyll d. the upper epidermis e. stomata
A useless or rudimentary body part that is thought to have been important in ancestral populations but no longer has a known function is termed a(n) ________
A) evolved structure B) terminal structure C) vestigial structure D) residual structure
A population pyramid:
a. reflects the number of individuals in various age groups in a population. b. predicts survival and mortality rates for an individual at a given age. c. directly predicts future age distributions of the population. d. shows the current birth and death rates of a population.
In a homeostatic system, the integrating system executes changes to compensate for deviances from the set point.
Answer the following statement true (T) or false (F)