Which is not a component of the cell’s damage repair and prevention agents? a. Superoxide dismutase...
Which is not a component of the cell’s damage repair and prevention agents? a. Superoxide dismutase b. Glutathione c. Catalase d. Caspase 7
Homework Answers
The one which is not a cell’s damage repair and prevention agents component is Caspase 7.
Apoptosis is mediated by caspases and cell death is triggered.
Superoxide dismutase is an antioxidant denfense
Glutathione is also an antioxidant.
Catalase is also involved in oxidation of superoxide species thus protecting the cell.
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Which is not a component of the cell’s damage repair and
prevention agents? a. Superoxide dismutase...
98) Superoxide dismutase is an entryme involved in oxygen detoxification 99) Obligate anacrobes can't express catal...
98) Superoxide dismutase is an entryme involved in oxygen detoxification 99) Obligate anacrobes can't express catalase. 100) Aerotolerant bacteria express catalase Back to Multiple Choice: 101) Bacterial numbers can be obtained by a) counting them in a chamber slide b) using a coulter counter c) determining cfu by spread-plate plate counts d) optical density e) all of the above 102) The coulter counter works based on a) photons b) electron e) cell growth d) visual detection e) none of the...
2 H 20? Which enzyme catalyzes the reaction: H202 + 2H Peroxidase Superoxide dismutase Catalase Oxidase...
2 H 20? Which enzyme catalyzes the reaction: H202 + 2H Peroxidase Superoxide dismutase Catalase Oxidase QUESTION 2 Which of the following is the best definition of fermentation? The production of ethanol from glucose The production of energy by substrate level phosphorylation The reduction of glucose to pyruvic acid The complete catabolism of glucose to CO2 and H2O The oxidation of glucose with organic molecules serving as electron acceptors QUESTION 3 The best definition of osmotic pressure is The active...
9. Shown below is a list of types of repair systems or repair molecules (a-d) and...
9. Shown below is a list of types of repair systems or repair molecules (a-d) and types of DNA damage or mutations (1-4). On the blank line following each type of damage, write the letter(s) of all repair systems that can repair that particular type of damage. a) Direct repair b) Base-excision repair c) Double-strand break repair d) Nucleotide-excision repair 1) Lesions caused by intercalating agents __________ 2) Pyrimidine dimers B 3) Deamination __________ 4) X-ray damage to chromosomes __________
41. Which is NOT a component of the extrinsic pathway of apoptosis? a. TNF b. Bax...
41. Which is NOT a component of the extrinsic pathway of apoptosis? a. TNF b. Bax c. Initiator caspase d. Executioner procaspase e. All of the above
This question is about DNA damage, repair and mutation. a) State a type of mutagen that...
This question is about DNA damage, repair and mutation. a) State a type of mutagen that could produce a single base pair substitution mutation. Briefly describe how this mutagen can produce single base pair substitution mutations. [4 marks] b) For your mutagen from (a), briefly describe the repair process that could repair the DNA damage. [4 marks] c) Propose how a single base pair substitution can be a hypomorphic allele. Explain how your mutation fits the definition of a hypomorphic...
37. What does the enzyme catalase do (also see Chapter 6)? a. Detoxifies H.O, created in...
37. What does the enzyme catalase do (also see Chapter 6)? a. Detoxifies H.O, created in the oxidation of flavoprotein in the e' transport chain b. Detoxifies H,O, created by the action of superoxide dismutase c. Allows many aerobic, facultatively anaerobic, and microaerophil microbes to survive d. All of the above 38. What type of media is used in the catalase test (we will use the test tube version, not the slide) a. Agar plate b. Agar slant c. Agar...
Which of these ions is produced when Cs reacts with O2? a) oxide, O2- b) superoxide,...
Which of these ions is produced when Cs reacts with O2? a) oxide, O2- b) superoxide, O2- c) peroxide, O22- d) dioxygenium, O2+
Step 4 of our mechanism framework is repair, adapt, or dysfunction. Which of the following best...
Step 4 of our mechanism framework is repair, adapt, or dysfunction. Which of the following best describes Step 4 for ricin? a. The ribosomal adenine is replaced by specialized repair enzymes. b. Cells adapt to functioning without protein synthesis. c. The ribosomal deactivation caused by ricin is irreversible. d. Cells avoid further damage by undergoing mitosis
please correct #34-40 with extra explanation for #36 that was hard for me to answer 34....
please correct #34-40 with extra explanation for #36 that was
hard for me to answer
34. Superoxide dismutase is an enzyme used by many organisms to detoxify oxygen free radicals, by-products from oxygen metabolism. Enterococcus is a genus of aerotolerant anaerobes.From what you know of oxygen use and bacterial metabolism, you would expect species of Enterococcus to have_ superoxide dismutase activity. a. very high ( b. Jow c.no d. not enough information e. none of these 35. These bacteria can...
3. (20 pts) The tripeptide glutathione, GSH, which is a major component in the cell, has...
3. (20 pts) The tripeptide glutathione, GSH, which is a major component in the cell, has the structure and pKa values shown below. Answer the following. a. By considering only the cysteine residue of GSH, determine the concentration of the thiol form of GSH if the total concentration of GSH in the cytosol is 2.00 mM and the pH of the cytosol is pH = 7.4. b. Glutathione is considered a polyfunctional ligand. Which donor atoms of GSH would likely...
98) Superoxide dismutase is an entryme involved in oxygen detoxification 99) Obligate anacrobes can't express catalase. 100) Aerotolerant bacteria express catalase Back to Multiple Choice: 101) Bacterial numbers can be obtained by a) counting them in a chamber slide b) using a coulter counter c) determining cfu by spread-plate plate counts d) optical density e) all of the above 102) The coulter counter works based on a) photons b) electron e) cell growth d) visual detection e) none of the...
2 H 20? Which enzyme catalyzes the reaction: H202 + 2H Peroxidase Superoxide dismutase Catalase Oxidase QUESTION 2 Which of the following is the best definition of fermentation? The production of ethanol from glucose The production of energy by substrate level phosphorylation The reduction of glucose to pyruvic acid The complete catabolism of glucose to CO2 and H2O The oxidation of glucose with organic molecules serving as electron acceptors QUESTION 3 The best definition of osmotic pressure is The active...
37. What does the enzyme catalase do (also see Chapter 6)? a. Detoxifies H.O, created in the oxidation of flavoprotein in the e' transport chain b. Detoxifies H,O, created by the action of superoxide dismutase c. Allows many aerobic, facultatively anaerobic, and microaerophil microbes to survive d. All of the above 38. What type of media is used in the catalase test (we will use the test tube version, not the slide) a. Agar plate b. Agar slant c. Agar...
please correct #34-40 with extra explanation for #36 that was
hard for me to answer
34. Superoxide dismutase is an enzyme used by many organisms to detoxify oxygen free radicals, by-products from oxygen metabolism. Enterococcus is a genus of aerotolerant anaerobes.From what you know of oxygen use and bacterial metabolism, you would expect species of Enterococcus to have_ superoxide dismutase activity. a. very high ( b. Jow c.no d. not enough information e. none of these 35. These bacteria can...
3. (20 pts) The tripeptide glutathione, GSH, which is a major component in the cell, has the structure and pKa values shown below. Answer the following. a. By considering only the cysteine residue of GSH, determine the concentration of the thiol form of GSH if the total concentration of GSH in the cytosol is 2.00 mM and the pH of the cytosol is pH = 7.4. b. Glutathione is considered a polyfunctional ligand. Which donor atoms of GSH would likely...
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