A common short, plump, shore bird with a worldwide distribution is the:
a. turnstone.
b. pelican.
c. avocet.
d. plover.
e. puffin.
D
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You have chosen RNA as the most likely molecule to be first enclosed by a membrane. You understand that it has the ability to store information and can self-replicate, but what else is necessary for simple metabolic processes to occur in a timely manner?
A. A biological catalyst. B. Energy from ADP. C. A pump, to drive a concentration gradient. D. A more stable nucleic acid. E. The ability to carry out structural roles.
What is one potential fate for a proton in the mitochondrial matrix?
a. They are attached to NAD+ and FAD. b. They combine with oxygen to form water. c. They synthesize ATP by substrate-level phosphorylation. d. They help in the production of CO2. e. They regenerate Coenzyme A.
Identify the correct order of structures in the vertebrate eye through which incoming light passes
before the impulse travels to the brain. 1) aqueous fluid 2) cornea 3) lens 4) optic nerve 5) rods and/or cones 6) vitreous body a. 3 ? 6 ? 2 ? 1 ? 5 ? 4 b. 1 ? 3 ? 2 ? 6 ? 4 ? 5 c. 2 ? 6 ? 3 ? 1 ? 4 ? 5 d. 2 ? 1 ? 3 ? 6 ? 5 ? 4 e. 3 ? 5 ? 1 ? 6 ? 2 ? 4
Although originally discovered in bacteria as a defense against bacteriophage infection, the CRISPR/Cas gene editing system can be used to edit the genome of any cell, whether microbial, plant, fungal, or animal.
Answer the following statement true (T) or false (F)