The extinct vascular plants of our planet’s past likely lacked true leaves and bore the most resemblance to which modern-day group?
a. flowering plants
b. trees
c. mosses
d. ferns
c. mosses
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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.
How many HLA haplotypes does each human have?
a. one b. two c. three d. four e. five
Vertebrates" refers to animals that possess ____
a. hair b. mammary glands c. the ability to give birth to live young d. a backbone e. lungs
In a resting neuron, the inside of the cell is negatively charged mainly because of
a. negatively charged chloride ions inside the cell. b. potassium ions being pumped out of the cell. c. negatively charged proteins inside the cell.