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- QUESTION 34 During fruit fly development, a transmembrane protein called Delta on the surfaces of presumptive neurons binds to a receptor, called Notch, on the surfaces of the immediately adjacent cells. This signals to the adjacent cells not to differentiate into neurons. This mode of signaling is: juxtacrine paracrine autocrine endocrineQUESTION 15 Which of the following molecules is NOT a component of desmosomes? A Intermediate filaments B Actin C Plakoglobin D Desmoplakin E DesmocolinQUESTION 20 You are studying the effects of removing integrins from cells. Which of the following abilities is the cell most likely to lose? A The cells are going to lose their ability to make connections with the ECM. B The cells will lose their ability to secrete growth factors. C The cells are going to lose their ability to form cell-cell adhesions. D The cells are going to lose their ability to communicate with the cytoskeleton.
- Question 24 pts When we are vaccinated against SARS-CoV-2, what happens? (select all correct answers) Group of answer choices a) Our adaptive immune system becomes primed to recognize the SARS-CoV-2 virus. b) Our DNA becomes modified. c) We will permanently have viral proteins in our cells d) Our cells will make a partial or complete viral protein, which our immune system will recognize as foreign. e) Memory cells will be ready for a new infection.Question 52 Nerve impulses leading to the skeletal muscle carry information to direct movements. The nerve fibers sending these signals will most likely belong to which division of the nervous system? A) Parasympathetic division B) Somatic nervous system C) Sensory (afferent) division D) Sympathetic division Please shortly explain each one why correct or incorrect.QUESTION NO. 1 Cystic fibrosis is a frequent generic disease of Caucasians. The CF gene codes for a protein called the cystic fibrosis transmembrane conductance regulator (CFTR) which functions as a cAMP-regulated chloride channel. The protein has two membrane-spanning domains, two domains that interact with ATP, and one regulatory domain. The most common defect is in the gene for one of the ATP binding domains. The result is a protein that does not fold correctly in the endoplasmic reticulum, is not properly glycosylated, and is nor transported to the cell surface. Rather, it is degraded in the cytosol within proteasomes. Drugs that foster chaperone interaction with the mutant protein are a potential therapeutic approach. Chaperones A. are always required to direct the folding of proteins. B. when bound to protein increase the rate of protein degradation. C. usually bind to strongly hydrophilic regions of unfolded proteins. D. sometimes maintain proteins in an…
- Question 70SavedIn addition to helping regulate neurotransmitter levels, what other benefits are observed with antidepressant medications? Question 70 options: A reduction in inflammation and chronic pain An increase in cerebral BDNF levels An increase in synaptic sprouting All of the above are benefits of antidepressantsQUESTION 29 Which of the following is NOT a primary method used to regulate the activity of cyclin-dependent kinases (cdks)? A. Binding to cyclins B. Binding to a CDK inhibitor C. Dephosphorylation of a specific amino acid D. Degradation by a proteasome E. Phosphorylation on a specific amino acidQuestion 14 One of the two genes known to be mutated in cases of Hypokalemic periodic paralysis (which is inherited in an autosomal dominant pattern but known to affect males more often than females) is the calcium voltage-gated channel subunit alpha1 S (CACNA1S). What is known about the gene is recorded here: https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000081248;r=1:201039512-201112451 Please navigate to the link above. Use the left-hand menu to view the sequence for CACNA1S, and answer the following question. ANSWER ONLY IN UPPERCASE LETTERS, NO UNITS. What are the last six nucleic acid bases of exon 1? Answer: The last six nucleic acid bases of CACNA1S, exon 1 are Blank ...
- QUESTION 5 Voluntary attention may be defined as ______________. a. willful direction of attention to objects or locations in the world or internal events b. a sudden capturing of attention by external stimuli c. "endogenous" orienting d. "exogenous" orienting e. a and cQuestion 12 One of the two genes known to be mutated in cases of Hypokalemic periodic paralysis (which is inherited in an autosomal dominant pattern but known to affect males more often than females) is the calcium voltage-gated channel subunit alpha1 S (CACNA1S). What is known about the gene is recorded here: https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000081248;r=1:201039512-201112451 Please navigate to the link above and ensure that you click to reveal the transcript table. Then use the information in the table to answer the following question. PLEASE GIVE YOUR ANSWER AS A NUMBER ONLY, NO UNITS What is the size in base pairs of the CACNA1S transcript named CACNA1S-202? Answer: The size of the CACNA1S transcript named CACNA1S-202 is Blank ... base pairs.QUESTION 10 Remdesivir is converted in vivo to CMP analog and then phosphorylated to CTP analog. a successful treatment for Ebola. There are more than 1 correct answers in the other choices. a potential chain terminator for the replication of RNA viral genome