Many animal trainers give rewards to an animal when it performs a behavior correctly. This type of learning is called
a. insight learning
b. operant conditioning
c. imprinting
d. innate learning
e. habituation
Ans: b. operant conditioning
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Which molecule is INCORRECTLY matched
with its component part?
a. fat: fatty acid. b. starch: glycerol. c. protein: amino acid. d. glycogen: glucose. e. nucleic acids: nucleotide
In DNA molecules,
a. the nucleotides are arranged in a linear, unbranched pattern. b. the nitrogenous bases are found on the outside of the molecule. c. the phosphate-sugar pattern runs the same way on each DNA strand. d. the backbone is internal to the molecule. e. the pairing of bases is non-specific
Select the correct association.
A. proteins-have three forms: monosaccharides, disaccharides, and polysaccharides B. carbohydrates-provide the body with an immediate source of energy C. carbohydrates-composed of amino acids bound together with peptide bonds D. lipids-structural components of hair, fingernails, and claws E. proteins-make up the bulk of the plasma membrane of cells
The conditions in the Miller–Urey experiment produced amino acids but not peptides. Subsequent experi-ments have adjusted the conditions and have produced other amino acids and stable peptide bonds. What is the significance of stable peptide bonds?
What will be an ideal response?