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Biology .

semseter exam

QuestionAnswer
what is the job of tRNA ? it takes information the the nucleas and transfers it to the ribosome to match up with the mRNA codon .
what is formed when cromatin condenses ? chromosomes
in what stage of mitosis do the sister chromostaids sepaerate ? anaphase
what happens during croass over ? the chromosomes exchange DNA .
what are chromoatids ? they are two halfs of a chromosome and their indentical to eachother .
put the stage of mitosis in order . 1) prophase . 2) metaphase . 3) anaphase . 4) telophase .
what is mitosis ? divison of the nuclues .
what is transcription ? takes the info from DNA and puts it into a mRNA .. happens in the nuclues
what does the transcription produce ? mRNA
what is the nucleotide made of ? sugar , phosophate , base .
where does translation occur ? happens in the nuclues
what are the functions of carbohydrates ? 1) sources of energy . 2) structural materials . 3) cellular identification
what is replication ? when DNA makes a copy of itself
what is the base pair rules for DNA ? A - T ... C - G
what does DNA and RNA have in common ? they both hold genetic info
why is the surface area important factor in limiting cell growth ? because if the cell if to big it cant asborb enough nitrients or asborb watses
which biomolecule includes the following functions ; energy storage ? lipids .
what do enzymes do ? they make chemical reactions happen faster by lowering the activiation energy level
in phosolipids what is non-polar and what is polar ? the heads are polar and the tails are non-polar
what are lipids ? constists of CHAINS of carbon atoms bonded to hydrogen atoms
what do carbohydrates have in them ? cellulose , starch , polysachae
Created by: CierraD
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