cPlasmodesmata of plant cells are functionally equivalent to __________ of animal cells
a. gap junctions
b. dermatomes
c. tight junctions
d. cell surface receptors
e. microvillus
A
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Choose the true statements about pseudogenes.
_____ Premature stop codons can produce pseudogenes. _____ Missense mutations can produce pseudogenes. _____ Pseudogenes have DNA sequences very similar to a functional gene. _____ Pseudogenes result from horizontal gene transfer.
Which therapy has decreased the incident of pneumocystis infection in patients with human immunodeficiency virus or acquired immunodeficiency syndrome (HIV/AIDS)?
a. Metronidazole b. Trimethoprim-sulfamethoxazole combi-nation c. Aminoglycosides with fluconazole d. Highly active antiretroviral therapy (HAART)
Cyclic adenosine monophosphate (cAMP) functions as a(n) ________
a. peptide hormone b. intracellular receptor c. steroid hormone d. second messenger
The probability of a crossover occurring between two genes on the same chromosome _____
a. is unrelated to the distance between them b. decreases with the distance between them c. increases with the distance between them