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PHYS 261-Human Physiology Mid Term Exam With Latest Updated (Questions And Answers
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PHYS 261-Human Physiology Mid Term Exam With Latest Updated (Questions And Answers
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PHYS 261-Human Physiology Mid Term Exam WithLatest Updated (Questions And Answers).
Regulated variables , set point - ANSWER ________ are kept within normal range
by physiological control mechanisms which are used if the variable strays too far
from its ________.
Negative feedback loops - ANSWER Which are used to keep our systems at or
near their set point
Response - ANSWER a reaction to a stimulus
Lysosome - ANSWER An organelle containing digestive enzymes
Microtubules - ANSWER Which cytoskeleton components are responsible for the
movement of chromosomes during cell division
RNA for ribosomes - ANSWER Nucleoli function in the production of
Ribosomes - ANSWER The beta cells of the pancreas produce insulin , a protein
hormone . Which organelle would be found in higher levels in the beta cells ?
Guanine - ANSWER What does cytosine pair with ?
Trypsiogen - ANSWER Trypsin is an active protein needed for protein digestion.
Trypsin has to be activated since our body produces it in its inactive form . Which of
the following is the inactive form of trypsin?
Acidic - ANSWER If a solution has a ph level less that 7 it is ,
Sugar , base , and phosphate group - ANSWER What is a nucleotide made up of ?
Quaternary - ANSWER When multiple tertiary structures come together it creates
what structure of a protein ?
GABA - ANSWER A depressed person is prescribed antidepressants. This
antidepressant works by replenishing an amino acid that is release by nerve cells
and functions as a neurotransmitter in our body . Which amino acid did the drug
replenish?
Protein - ANSWER What type of organic molecule is the prion composed of ?
UAG - ANSWER Transcription of the DNA triplet sequence ATC yields
RNA polymerase - ANSWER Enzymes that synthesize mRNA from the dna
template are called
, The enzyme would not be able to function - ANSWER What effect would lack of an
enzyme's cofactor have on the enzymes function?
Form proteins - ANSWER If the enzyme RNA polymerase was completely inhibited
within a cell, it could not
NAD - ANSWER When an indirect form of energy is released during reactions , it is
captured by energy carrying molecules called coenzymes . What would be
considered a coenzyme?
Kreb cycle - ANSWER During starvation your body will take the store fats and
break it down to form acetyl coa to make atp , what pathway will the acetyl coa
enter ?
Transcription - ANSWER 1. Transcriptional factors bind " tata " box 2. Enzyme
binds promoter 3. nucleotides complimentary to dna are placed 4. Exons are put
together 5. Poly " A" tails are put together
Endocytosis - ANSWER A cell transports large molecules into the cell by using
small vesicles . What is this process called ?
plasma and interstitial fluid - ANSWER what are the two components of
extracellular fluid?
graded potential - ANSWER 1. GABA binds to its receptors on the post synaptic
membrane 2. Ligand gated chloride channels open 3. Chloride enters the cell 4.
Membrane potential reaches -80mv
Synaptic transmission - ANSWER 1. Action potential arrives at the action terminal
2. Voltage-gated calcium channels open 3. Calcium enters axon terminal 4.
Neurotransmitter is released into the synaptic cleft
Corpus callosum - ANSWER The structure that connects the two cerebral
hemispheres
Hippocampus - ANSWER An important structure in both learning and memory
Glucose - ANSWER The brain consumes about half of Circulating in the body
Perception - ANSWER The brains integration of sensory stimuli
An enlarged are with surface grooves and folds - ANSWER There is a story about
an autopsy having been performed on a space alien in New Mexico , many decades
ago . Assuming that this alien was well educated and trained on its planet similar to
how NASA educates and trains astronauts on earth what feature would be in the
aliens brain
PTH and calcitonin - ANSWER what two hormones regulate calcium balance ?
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