One hypothesis on the origin of DNA points to RNA viruses evolving a modified nucleotide that is insensitive to ribonucleases
Indicate whether the statement is true or false.
Answer: TRUE
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Fermentation
A. uses an inorganic molecule as the final electron acceptor. B. uses an organic molecule as the final electron acceptor. C. results in the production of a large amount of ATP. D. is necessary in some organisms to produce reduced electron carriers. E. uses an organic molecule as the final electron acceptor AND is necessary in some organisms to produce reduced electron carriers.
Which of the following correctly lists structures in order starting at the outer ear?
a. cochlea, eardrum, ear canal, hair cells b. ear canal, eardrum, stapes, cochlea c. incus, stapes, ear canal, cochlea d. eardrum, hair cells, ear canal, stapes
Oviparous animals ____
a. lay eggs that contain the nutrients needed for development of the embryo outside the mother’s body b. retain the embryo within the mother’s body and nourish it at least through early embryo development c. have a specialized temporary structure, the placenta, which connects the embryo to the uterus during development d. retain fertilized eggs within the body, where the embryo develops using the nutrients provided by the egg e. have mature egg-producing and mature sperm-producing tissue present in the same individual
Nucleic acids are assembled in the ________ direction
Fill in the blank(s) with the appropriate word(s).