Pouches in the gut wall developed into __________
in fishes that are ancestral to land vertebrates.
a. heart chambers
b. the notochord
c. lobes of the liver
d. lungs
e. vocal cords
Answer: d
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Deoxyribonucleic acid is used for: (choose all that apply)
A. transmission of information. B. storage of information. C. biological catalysis. D. energy storage. E. cell-to-cell communication.
Which of the following is unique to prokaryotes?
a. UTRs in mRNA b. introns c. polysomes connected to DNA d. use of aminoacyl-tRNA synthetases e. translocation during translation
Active transport is different from simple diffusion because active transport
A. requires ATP. B. moves molecules against a concentration gradient. C. requires the use of proteins embedded within the cell membrane. D. moves molecules from an area of lower concentration to an area of higher concentration. E. All answers are correct.
Mitochondrial inner membrane transmembrane proteins are inserted into the inner membrane
a. directly from the matrix into the lipid bilayer. b. through Tim. c. through Tim and Tom. d. through a transporter called Oxa1.