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40 questions
When a cell is in late anaphase of mitosis, which of the following will we see?
chromosomes clustered tightly at the center
breaking down of the nuclear envelope
a clear area in the center of the cell
formation of two daughter nuclei
Humans have ________ pairs of chromosomes.
21
23
46
None of the above
What is cancer?
A group of diseases characterized by no cell growth
A group of diseases caused by the failure of chromosomes to separate
A group of diseases characterized by uncontrolled cell division
A group of diseases caused by excessive replication of chromosomes
How do bacteria sense local population density?
quorum sensing
bacteria sensing
signal sensing
population sensing
Local signaling in animals is called what?
paracrine
endocrine
hormone
gap junctions
Long distance signaling in animals is called what?
paracrine
endocrine
hormone
gap junctions
Molecules that bind to membrane receptors are called what?
signals
ligands
glycoproteins
second messengers
What word means programmed cell death?
apoptosis
mitosis
Ced-9
bleb
Cells can communicate with one another via:
chemical messengers
hormones
gap junctions
all of these
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