Which of the following is NOT true?
a. Intermediate filaments and actin filaments treadmill
b. Intermediate filaments and microtubules have a single monomer
c. Intermediate filaments and microtubules have a role in the centrosome
d. Two of the above
e. None of the above
Answer: e. None of the above
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Terry takes the body of the snakelike organism and slices it open along its dorsal side. If it is a hagfish, what should Terry see?
A) a well-developed series of bony vertebrae surrounding the spinal cord B) a well-developed series of cartilaginous vertebrae surrounding the spinal cord C) a tube of cartilage (surrounding the notochord) with dorsal projections on both sides of the spinal cord D) a notochord, located underneath the spinal cord
The nucleus of an atom is composed of
A. protons. B. neutrons. C. electrons. D. protons and neutrons. E. protons and electrons.
"Gluconeogenesis" is the process in which
A. glucose levels are decreased in the blood through the breakdown of carbohydrates. B. glucose levels are decreased in the blood by synthesis of glucose from noncarbohydrate sources. C. glucose levels are increased in the blood by synthesis of glucose from noncarbohydrate sources. D. amino acids are generated for processes like building muscle tissue. E. glucose levels are increased in the blood through the breakdown of carbohydrates.
Went's experiment in 1926 with oat coleoptiles showed that agar that absorbed auxin from the tips would cause a tipless shoot to curve away from the side where he had placed the agar, suggesting that auxin causes cells to elongate.
Answer the following statement true (T) or false (F)