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
What will be an ideal response?
E
E. brain receives and compares stretch information
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In what part of the cell cycle does an actively
dividing cell produce the proteins necessary for mitosis?
a. G1 b. S c. G2 d. prophase e. more than one of these
Individual prokaryote cells are ________ eukaryote cells; collectively, all prokaryote cells on Earth ________
A) the same size as; weigh about one-tenth the total mass of eukaryote cells B) much larger than; weigh about 10 times as much as the total mass of eukaryote cells C) much smaller than; weigh about one-tenth the total mass of eukaryote cells D) the same size as; weigh about 10 times as much as the total mass of eukaryote cells
In MATERNAL EFFECT, which of the following is TRUE?
A) In a reciprocal cross, the offspring's genotype and phenotype are the same as the mother's. B) The mother's phenotype is the offspring's phenotype. C) The mother's genotype is the offspring's phenotype. D) In a reciprocal cross, only the father's alleles are expressed. E) In a reciprocal cross, the grandfather's alleles have the most influence.
Calculate the pKa of lactic acid, given that when the concentration of lactic acid is 0.01 M and the concentration of lactate is 0.002 M, the pH is 2.9
A. 3.9 B. 3.6 C. 3.2 D. 2.5 E. 2.2