Which cell is classified as an agranulocyte?
a. monocytes
b. platelets
c. basophils
d. neutrophils
e. eosinophils
ANSWER: a
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Transcriptionally active genes are characterized by:
A. an increase in H1. B. the presence of bound nucleosomes at the promoter regions. C. the presence of specialized chromosome remodeling complexes. D. the absence of histone variants such as H2AZ and H3.3. E. All of these choices are correct.
The number-one risk factor for sudden infant death syndrome (SIDS) is ____
a. an infant lying on their back b. breast feeding an infant c. premature feeding of solid foods d. exposure to tobacco smoke e. holding the infant
If a man expresses an X-linked recessive trait, we can draw the following conclusion:A
His father carried the mutation. B. His father transmitted the trait to his son. C. His mother did not carry the mutation gene. D. His mother was heterozygous or homozygous for the trait. E. All his brothers will also show the trait.
How might ants on an acacia tree serve in a mutualistic relationship?
A) The ants fight off potential herbivores. B) The ants carry disease. C) The ants bring nitrogen to the tree. D) The ants bring sugar to the tree.