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PHSL-P 215 EXAM 1 2024 (96 questions and answers).
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PHSL-P 215 EXAM 1 2024 (96 questions and answers).
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PHSL-P 215 EXAM 1 2024 (96questions and answers)
What are 3 sources of errors and examples in
protein synthesis? - answer 1. genetic disorders:
DNA base errors (cystic fibrosis)
2. missing or broken genes: muscular dystrophy
3. extra or missing chromosomes: down syndrome
Which organelles are involved in processing AND
packaging new proteins? - answer golgi
apparatus, endoplasmic reticulum
final step of protein synthesis - answer repeat
steps 7 and 8 until the stop codon is reached
step 8 of protein synthesis - answer repeat step 7
with the next mRNA codon.
ribosome binds the two amino acids together with
a peptide bond.
step 7 of protein synthesis - answer
TRANSLATION: a transfer RNA molecule whose
anticodon fits w/ the mRNA codon brings the
matching amino acid to the ribosomes.
,step 6 of protein synthesis - answer a ribosome
links to the mRNA strand and starts "reading" it
step 5 of protein synthesis - answer the strand of
mRNA leaves the nucleus
what is a cell? - answer smallest functional sub
unit of the body (many different shapes and
functions)
where are membrane proteins produced? - answer
rough ER
what is an integral membrane protein? - answer
protein that is embedded within the membrane
(ion channels)
what is a peripheral protein? - answer around
membrane, can move around (cytoskeleton,
enzymes)
5 important roles of proteins in the body? - answer
1. structure: muscle, cytoskeleton
2. enzymes: catalysts, digestion
3. ligands: hormones and neurotransmitters
, 4. transport: membrane proteins, hemoglobin
5. immunity: antibodies
rank the following in their ability to leave or enter
the cell: glucose, estrogen, insulin, oxygen -
answer 1. oxygen
2. estrogen
3. glucose
4. insulin
4 membrane functions - answer 1. physical barrier
2. transportation (endocytosis/exocytosis)
3. communication
4. structure (microvilli, dendrites, etc.)
Explain AEROBIC catabolism of pyruvate - answer
both oxygen AND mitochondria are present.
(occurs in the mitochondria)
What is the net result of AEROBIC catabolism? -
answer +1 NADH
+1 acetyl group
+1 CO2
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