Biology, 08.10.2019 08:30 elizabethprasad2
Which of the following statements is correct about diffusion?
a) it may require a transport protein.
b) it is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.
c) it requires an expenditure of energy by the cell.
d) it involves movement of molecules down a concentration gradient and may require a transport protein.
e) it is an active process in which molecules move from a region of lower concentration to one of higher concentration.
Answers: 2
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Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.
Answers: 1
Biology, 22.06.2019 19:10
Which statement does lola need to correct, and why? a) statement 1 because spiral galaxies do not havearmsb) statement 2 because the bulges contain mostlyyoung red stars.c) statement 3 because the arms are made of mostlyyoung blue and blue-white stars.d) statement 4 because spirals galaxies contain littleto no dust.(c)
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Which of the following statements is correct about diffusion?
a) it may require a transport p...
a) it may require a transport p...
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