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The organelles/structures responsible for the manufacture, folding, and modification of proteins.
When two amino acids form a peptide bond or two nucleotides form a phosphodiester bond, one molecule of ______________________________ is lost.
None of these
_______________________________ transport involves processes such as osmosis and diffusion.
Carbohydrates are stored long-term in plants in the form of ________________________.
Which of the following molecules will readily cross the plasma membrane by simple diffusion?
In DNA, the nucleotide adenine forms ________ hydrogen bonds with _________.
Which of the following organelles/structures are typically only found in prokaryotes, not eukaryotes.
Hydrogen bonds contribute the the structure of which of the following?
alpha-helix shape of peptides
double-strandedness of DNA
lattice-like crystal structure of ice
tertiary structure of proteins
none of these
If placed in a ___________________ solution, a red blood cell will swell and lyse.
none of the above
Polyglutamine expansions, protein aggregation, and neuronal damage underlie the pathology of which disease(s)?
Transmissible Spongiform Encephalopathies
Which of the following molecules is polar? You will be given the molecule name or structure, but not both, in order to determine polarity.
What is a major role of the glycocalyx?
What is the difference between a peptide and a protein?
Peptides are constructed in the N-to-C direction, whereas proteins are in the C-to-N direction.
There are no differences between the two.
A peptide is a single string of amino acids, whereas a protein may contain multiple peptides.
Proteins can form peptides, but peptides cannot form proteins.
Why are saturated fats more solid than unsaturated?
Unsaturated fatty acids have a kink in their tail, which makes it harder to pack together resulting in decreased rigidity.
Unsaturated fatty acids have a lower melting temperature.
Unsaturated fatty acids have fewer hydrogens, thus they are not capable of forming as many hydrophobic forces as saturated fatty acids.
When in an aqueous environment amphipathic molecules have a tendency to ....
form micelles and bilayers.
aggregate into plaques.
polymerize into larger macromolecules.