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Test 2 Mallery (Pre-Med)
Terms in this set (40)
A ribosome would be found in which of the following places within cells?
Polyribosome (polysome), cytoplasm of a eukaryotic cell, attached to the ER membranes, In the cytoplasm of a bacterial cell
The size of a ribosome has almost the same dimensions as a lysosome
The type of endoplasmic reticulum that is responsible for lipid and bile synthesis and drug detoxification is
The figure represents which organelle?
Lysosomal membranes contain H+ ion pumps making the pH of the interior of this organelle have a(n)____pH optima
E.R transport vesicles enter the Golgi for modification on the Golgi's
The self-digestion of the organelles of a cell, often referred to as intracellular digestion, is also known as
Which of the following cytoskeletal proteins is used to make the microfilament elements of the cytoskeleton?
Which of the following pairs of organelles have exactly the same or identical structure?
Centriole and a basal body
The inter-cellular junction that functions as an adhering junction holding two cells together is
The rate of movement of most chemical solutes across membranes is directly proportional to that solute's...
If a solution is hypertonic to the cytoplasm of a cell, then it is likely that this cell will...
If the calculated Nernst electrical potential is 27mv inside negative for Na ions in a kidney epithelial cell and if we measure the actual cell potential by inserting an electrode into this kidney cell and determine the actual potential to be 26.5 mv inside negative, then we may conclude that Na ions distribute themselves a kidney cell membrane..
Microtubules and microfilaments are absent in which of the following cells?
NONE OF THESE: eukaryotic egg cells, human kidney cells, all animal cells, bacterial cells
Paracrine cell signaling involves local regulator chemical messengers which are targeted to specific receptors and often includes growth factor proteins
The binding of which of the following molecules induces inactive tyrosine-kinase regulator proteins to become active kinases? (
A signal molecule (the hormone epinephrine) leads to activation of a membrane bound inactive enzyme adenyl cyclase. Active adenyl cyclase produces which of the following secondary messenger molecules?
Cholera toxin is made by the bacteria, Vibrio cholerae, which grow in fecal infected waters and produce the toxin that binds to a G-protein, preventing the conversion of GTP-->GDP, thus the G-protein remains active, causing cAMP to remain active with a net result of perfuse diarrhea, which is often fatal.
Most of a cells conversion of food molecules into useful cellular energy is used for
A cellular reaction that results in an increase in the entropy of the products is a(n) or has a(n)... (26)
If the (delta)G for ATP-->ADP + P is -7.3 Kc/mole and the (delta)G for the conversion of glucose+fructose----> sucrose is + 5.5 Kc/mole, then the overall (delta)G for the conversion of glucose+ ATP + fructose to sucrose is...
A bacteria consumes 5 glucose molecules via glycolysis: the total number of net ATP that it could make would be...
Which of the following cellular respiration coenzyme molecules have ADP as a part of their structural makeup?
NAD+, FADH, CoASH
Which of the following reactions is responsible for moving the electrons and/or hydrogen atoms from the pathway reactions into the mitochondria to be used by the mitochondrial electron transfer chain?
Where does decarboxylation take place?
during alcohol fermentation, during the pyruvate dehydrogenase reaction, during the krebs cycle
The terminal electron acceptor (last molecule to accept electrons) in the mitochondrial electron transfer chain is...
cellular respiration is regulated by concentration controls of molecules, such as ADP and ATP, as well as allosteric regulation of the key glucolytic enzyme phosphofructokinase
Plants reflect what "colors" of the visible spectrum of light
When chlorophyll molecules re-radiate absorbed light, which then appears near-red in color the process is known as..
Which enzyme of carbon dioxide reduction are found in C-4 photosynthetic plants?
RuBP-Carboxylase (Rubisco) and PEP-Carboxylase
You would expect to find the highest concentration of the kinase protein MPF (That promotes cell division) during what stage of the cell cycle?
During Meiosis 1, the cell separates the homologs of a homologous pair, while during mitosis the chromatids of a homolog are seperated
Chromosomal synapsis and crossing over occur during...
Prophase of meiosis
A gene for a specific morphological trait in a species may have only two different alleles
A couple that has blood types A and B are incapable of having any children with blood type "O"
A human recessive genetic disease, phenylketonuria (PKU) is found on chromosome 12. Suppose a boy, John, who has PKU marries a normal woman but whose father also has PKU. If this couple has any children, what is the probability that their children will be normal?
What is the correct linear sequence for the following genes based upon the map data:
Gene E is map units from N
Gene N is 7 map units from A
Gene A is 4 map units from C
Gene E is 16 map units from C
Gene N is 11 map units from C
gene E is 12 map units from A
Trisomy is the abnormal chromosome circumstance where there is one less than the normal diploid number of chromosomes in an individual
In ibises orange feathers (G) are dominant to green feathers (g). An orange feathered Ibis named Sebastian mates with a green feathered Ibis. Over their entire reproductive life spans all their chicks are orange feathered. We may conclusively state Sebastian's genotype is homozygous dominant
Lou Gherig's disease (amytropic lateral sclerosis), a commonly recessive gene inherited muscle disease, shows an incidence of 1 out of 624 people in the U.S. How many carriers are there in the U.S. population for ALS?
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