Human bone, muscle, and nerve cells all contain the same number of chromosomes with the same complement of genes. what enables these cells to perform specialized activities?
a. the ability of some cells to remove unnecessary dna sequences
b. the regulation of gene expression within each cell type
c. the mutation of genes within each cell type
d. the use of different methods of cell division
Answers: 2
Biology, 21.06.2019 23:00
Which image shows labeled organelles that are present only in plant cells?
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Biology, 22.06.2019 00:00
Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.
Answers: 1
Biology, 22.06.2019 07:00
Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.
Answers: 1
Human bone, muscle, and nerve cells all contain the same number of chromosomes with the same complem...
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