Biology, 05.10.2019 16:30 kakkakak4696
1.
humans have 46 chromosomes, in 23 pairs. which of the following descriptions of cell types and chromosome numbers is incorrect?
skin cells have 46 chromosomes.
nerve cells have 46 chromosomes.
somatic cells have 23 chromosomes.
sex cells have 23 chromosomes.
2.
similar to making a double batch of cookies, in order for a cell to divide it must have double the contents that it normally has. during interphase:
cytoplasm and organelles are replicated, but not dna.
none of these happen during interphase; synthesis occurs during mitosis.
cytoplasm increases, and organelles and dna are replicated.
only cellular dna is replicated to a 4n state.
3.
use the table below to choose the incorrect statement.
pea plant epidermal (leaf) cells have 7 chromosomes.
human skin cells have 46 chromosomes.
goldfish sperm cells have 47 chromosomes.
before mitosis, after s phase, a human blood cell has 92 chromosomes.
4.
which of the following cell types would most likely go through the stages of interphase the fastest?
embryonic skin cells
adult lymphocytes
adult digestive tract cells
child kidney cells
5.
why is it necessary for the genetic material in a cell to exist in chromatin form during normal cellular activity, and not in chromosome form?
chromatin form allows the genetic code to be read and proteins to be made.
chromatin prevents genetic material from being broken off during replication.
condensing into chromosome form requires more energy than the cell has to exert.
it requires more surface area in the cell to have the cells condense.
Answers: 2
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1.
humans have 46 chromosomes, in 23 pairs. which of the following descriptions of cell types a...
humans have 46 chromosomes, in 23 pairs. which of the following descriptions of cell types a...
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