The respiratory surfaces of mammalian lungs are called
a. alveoli.
b. bronchi.
c. tracheae.
d. bronchioles.
e. air sacs.
A
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Which of the following nucleotides in the anticodon can allow for "wobble" in translation?
A) uracil B) thymine C) guanine D) inosine E) carboxycytosine
If a hiker picked up a mollusk on a trail in a rain forest, what class would it belong to?
A. Gastropoda B. Polyplacophora C. Bivalvia D. Cephalopoda Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about mollusks? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following statements is true?
a. Bacterial chromosomes are broken into individual segments containing one or more genes, which are then replicated. b. The cell’s circular chromosome is unzipped and the strands separated before the replication process can begin. c. The cell’s circular chromosome begins unzipping and replicating in one direction from the origin to the terminal. d. Replication proceeds in both directions from the origin until both strands are complete chromosome loops.
Which of these refers to atoms with the same atomic number but different atomic masses?
a. These atoms have different numbers of protons. b. These atoms have different numbers of electrons. c. These atoms are isomers. d. These atoms are different elements. e. These atoms are isotopes.