Evolution at the genomic level involves changes in
A. chromosome structure and number.
B. sequences of amino acids in proteins.
C. sequences of nucleotides in RNA molecules.
D. incorporation of new organelles such as the mitochondrion.
E. DNA and histone relationships.
A. chromosome structure and number.
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It is generally accepted that the vertebrates that evolved during the early Devonian period are the
A. sharks and bony fish. B. hominoids. C. birds. D. dinosaurs. E. mammals.
LDL particles binding to receptors before being engulfed by a cell is an example of which of the following?
a. phagocytosis b. pinocytosis c. receptor-mediated endocytosis d. exocytosis
Mot-mots are snake-eating birds of the American tropics. If a mot-mot killed and consumed a rattlesnake and that snake fed upon grain-eating rodents, then how many kilograms of grain would normally be required to end up with 1 kg of mot-mot?
A) 10 B) 100 C) 1000 D) 10,000
Axons branch into axon terminals, which have ________ located at the terminal ends
A) Schwann cells B) dendrites C) nodes of Ranvier D) bulbs E) hillocks