Concept explainers
To explain: The reason behind an anaerobic condition when the cell could not discard pyruvate as a waste product.
Introduction: The cells growing in the absence of oxygen (anaerobic condition) in which the end product of glycolysis is pyruvate undergoes fermentation. In the process of fermentation, NAD+ is regenerated from NADH by transferring electron to organic molecule like lactate and ethanol.
Explanation of Solution
In the process of fermentation, in anaerobic condition of cell NAD+ is regenerated from NADH by transferring electron to organic molecule. To continue the process of glycolysis in the cell, cells need to regenerate NAD+. So, without the fermentation process there is no other methodical way to generate NAD+. In absence of NAD+, the glycolysis process is discontinued from the step- 6 that is energy generation phage where the oxidation of glyceraldehydes 3-phosphate produce 1, 3-biphosphoglycerate to continue the glycolysis process.
To explain: The products from glucose accumulate in the cell unable to generate either lactate or ethanol by fermentation.
Introduction: The cells growing in the absence of oxygen (anaerobic condition) in which the end product of glycolysis is pyruvate undergoes fermentation. In the process of fermentation, NAD+ is regenerated from NADH by transferring electron to organic molecule like lactate and ethanol.
Explanation of Solution
In the fermentation process in presence of pyruvate, the NAD+ is reinitiated from NADH by transferring electron to organic molecule like lactate and ethanol. To keep glycolysis continuing in the cell, it needs regenerated NAD+. There is no suitable way rather than the fermentation to produce NAD+. In glycolysis process in absence of regenerated NAD+ at energy generation step of glyceraldehyde 3-phosphate to 1, 3-biphosphoglycerate will not occur. The product glyceraldehydes 3-phosphate would accumulate in the cell unable to make either lactate or ethanol, neither it would able to regenerate NAD+. So, in this step also glycolysis process is blocked.
Want to see more full solutions like this?
Chapter 13 Solutions
ESSENTIAL CELL BIOLOGY-TEXT (PB)
- Identify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forwardIdentify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forward
- Identify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forwardWhat type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forward
- What specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forwardIdentify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forward
- Please answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forwardYou are studying the effect of directional selection on body height in three populations (graphs a, b, and c below). (a) What is the selection differential? Show your calculation. (2 pts) (b) Which population has the highest narrow sense heritability for height? Explain your answer. (2 pts) (c) If you examined the offspring in the next generation in each population, which population would have the highest mean height? Why? (2 pts) (a) Midoffspring height (average height of offspring) Short Short Short Short (c) Short (b) Short Tall Short Tall Short Short Tall Midparent height (average height of Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inchesarrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education