Which of the following is the highest (or most complex) level of structure for genetic material?
A. double helix
B. nucleotide
C. gene
D. chromosome
E. DNA
Answer: D
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The ATP synthase complex in the thylakoid membrane
A) contains an embedded CF1 component and a protruding CFo component. B) is identical to the FoF1 complex of mitochondria. C) performs photophosphorylation in oxygenic phototrophs. D) contains an assembly of hydrophobic polypeptides that function in ATP synthesis. E) all of the above
What is the specialized type of neuron that responds to an action potential by releasing a hormone into the blood called?
a. hormonal neuron b. anterior pituitary cell c. posterior pituitary cell d. neurosecretory cell e. endoneuron
Which of the following organisms is (are)
being used routinely in genetic engineering for production of drugs? I. rats II. yeasts III. bacteria
a. I and II b. I and III c. II and III d. I, II, and III e. III only
The sutures of the skull are examples of a _____ joint
synovial cartilaginous fibrous hyaline