The out-of-Africa hypothesis (replacement model) of human evolution proposes that Homo sapiens evolved from
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one population of Homo ergaster and the other populations were supplanted by H. sapiens.
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The citric acid/Kreb's cycle breaks down carbohydrates into CO2.
a. true b. false
Which of the following statements about cysteine is correct?
A) Cysteine forms when the -CH2-SH R group is oxidized to form a -CH2-S-S-CH2- disulfide bridge between two cysteines. B) Cysteine is an example of a nonstandard amino acid, derived by linking two standard amino acids. C) Cysteine is formed by the oxidation of the carboxylic acid group on cysteine. D) Cysteine is formed through a peptide linkage between two cysteines. E) Two cysteines are released when a -CH2-S-S-CH2- disulfide bridge is reduced to -CH2-SH.
Peritonitis is potentially linked to problems in
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Match the letter of each example from childbirth to the appropriate component of a positive feedback loop.A. Pituitary gland secretes oxytocin, which acts on the uterusB. Uterine contractions increaseC. Fetus is pushed against uterine openingD. Receptors detect stretchE. Brain receives and compares stretch informationIntegrating Center
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