Compare/contrast the chemical bonds between adjacent monomers in DNA, and between two strands of DNA.
What will be an ideal response?
The bonds holding monomers together are covalent bonds, between sugar and phosphate molecules. The bonds holding neighboring strands together at the complementary bases are hydrogen bonds.
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The fixed point around which a lever rotates is the
A. fulcrum. B. condyle. C. resistance node. D. effort arm. E. multiaxis.
What do muscarine and nicotine have in common?
A. They are both agonists for their respective receptors. B. They are both always excitatory. C. They are both antagonists for their respective receptors. D. They both activate-protein coupled channels.
Explain the relationship between load and speed of muscle contraction
A) The greater the load on a muscle, the longer it takes for the muscle to shorten, and the less it shortens. B) The greater the load on a muscle, the longer it takes for the muscle to shorten, and the more it shortens. C) The greater the load on a muscle, the less time it takes for the muscle to shorten, and the less it shortens. D) The greater the load on a muscle, the less time it takes for the muscle to shorten, and the more it shortens. E) There is no relationship between load and speed of muscle contraction.
During organogenesis, which somite-derived structure gives rise to the muscles of the trunk?
A. The myotome B. The sclerotome C. The dermatome D. The pharyngeal pouches E. The coelom