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All cells have only one nucleus
TRUE or FALSE
False-- Heart, Liver cells and Urinary cells have more than one nucleus.
Carrier molecules are required for which type of transport across the cell membrane?
Diffusion, molecules always move from areas of _______ concentration to area of _______ concentration.
High to Low
Osmosis means the movement of _________ from _________ to ____________.
water from high concentrated of water to a low concentrated of water.
If a virus were to enter a cell and destroy its centrosomes, how would the cell be affected?
It would be unable to undergo mitosis.
Bonding between bases in DNA is always Cytosine with ___________ and thymine with ____________.
Moves substance against the concentration gradient. Is physiological- requires life.
Movement because of hydrostatic pressure difference.
Gravity can cause this.
Sorting by size through pores.
Cristae- where ATP (energy) is made
have own DNA & RNA
makes their own enzyemes
Tubular extensions of the plasma membrane; contains a bunble of actin filaments- increase surface area for absorptions.
Once fertilized, the zygote, a single cell begins to multiply. The complete set of genetic information ____ must be replicated and passed on to all future cells
ribosomal RNA subunits come together aound mRNA to "read" the code and determine what amino acids are needed.
carries amino acids to rRNA/mRNA. The tRNA anticodon binds to the mRNA codon to "deliver"correct amino acids. The process continues until all amino acids are delivered and final STOP codon is read.
The three- base sequence on a messenger RNA molecule that provides the genetic information used in protein synthesis; code for given amino acid
serve many purposes in our bodies. They protect us in the form of antibodies. They move to allow our muscles to contract. They are the gates into and out of our cells.
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