What are the main roles of testosterone in males?
a. Stimulates spermatogenesis
b. Formation of external genitalia
c. Development of secondary sex characteristics
d. All of the above
Answer: d. All of the above
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Which of the following best describes the significance of the TATA box in eukaryotic promoters?
A) It is the recognition site for a specific transcription factor. B) It sets the reading frame of the mRNA. C) It is the recognition site for ribosomal binding. D) Its significance has not yet been determined.
Certain nutrients are considered "essential" in the diets of some animals because _____
A) only those animals use those nutrients B) these animals are not able to synthesize these nutrients C) the nutrients are necessary coenzymes D) only certain foods contain them
Blood returns to the heart from the lungs through the pulmonary (arteries/veins/valves)
What will be an ideal response?
The Calvin Cycle takes place in the:
A. home of the thylakoid B. chloroplast stroma C. thylakoid stroma D. cytoplasm E. mitochondria