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36 terms

cell

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Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the parent cell
TRUE
Apoptosis is programmed cell suicide, but cancer cells fail to undergo apoptosis
TRUE
Final preparation for cell division is made during the cell life cycle subphase called G2
TRUE
Chromatin consists of DNA and RNA
FALSE
In osmosis, movement of water occurs toward the solution with the lower solute concentration
FALSE
The genetic information is coded in DNA by the regular alternation of sugar and phosphate molecules
FALSE
A process by which large particles may be taken into the cell for food, protection of the body, or disposing of old or dead cells is called phagocytosis
TRUE
The orderly sequence of the phases of mitosis is prophase, metaphase, anaphase, and telephase
TRUE
Diffusion is always from areas of greater to areas of lesser concentration
TRUE
DNA transcription is another word for DNA replication
FALSE
Interstitial fluid reresents one type of extracellular material
TRUE
The cell (plasma) membrane normally contains substantial amounts of cholesterol
TRUE
Only one cell type in the human body has flagellum
TRUE
Telomeres are the region of chromosomes that code for the protien ubiquitin
FALSE
what happens during generation of a membrane potential
Both potassium and sodium ions leak through the cell membrane due to diffusion
what RNA is responsible for bringing amino acids to the "factory" site for protein formation?
tRNA
red blood cells placed in pure water would _____?
swell and burst
describe plasma membrane
the phospholipid bilayer surrounds cell
fingerlike projections that greatly increase the absorbing surface of cells
Microvilli
diffusion
the greater the concentration of gradient, the faster the rate
If cells are placed in a hypotonic solution containing a solute to which the membrane is impermeable, what would happen?
the cells will lose water and shrink
intercellular material
is not a subcellular structure
what is a function of plasma membrane protein
molecular transport through the membrane
RNA
Messenger RNA, Transfer RNA, and robosomal RNA play a role in protein synthesis
mitosis
prodices nucleus replication
melanin is a __?
inclusion
2 organells
microtubule, lysosome & Cilia
Passive membrane transport processes include ______
movement of substance down its concentration gradient
mitochondria
contains some of the DNA and RNA code necessary for their own function
when does DNA replication take place?
during interphase of the cell cycle
in transcription/translation what occurs
the nucleotide sequence in a tRNA anticodon is an exact copy of the DNA triplet that coded for it except thar uracil is substituted for thymine
concept cell theory
a cell is the basic structual and functional nit of living organisms
whats the main component ot cytosol
water
extracellular matrix is _______
the most abundant extracellular material
crenation is likely to occur in blood cells in _____
a hypertonic solution
if tRNA has a AGC anticodon it could attach to a _____
UCG