Answer:
No, glycolysis can not be continued without fermentation in the absence of oxygen.
Explanation:
In the absence of oxygen, cells perform fermentation to oxidize NADH into NAD+. NAD+ is required during the conversion of glyceraldehyde 3 phosphate into 1,3 bisphosphoglycerate. Fermentation reduces pyruvate and oxidizes NADH so that the NAD+ supply is continued to ensure continuity of glycolysis.
If fermentation does not occur under anaerobic conditions, cells will accumulate pyruvate and NADH. Glycolysis could not be continued in the absence of NAD+.
ductile deformation
Explanation:
Deformation is the change in size or shape of a body due to the application of stress. There are two main types of deformation:
- Ductile deformation occurs where a body is deformed permanently without any fracturing such as seen when folds are formed.
- Brittle deformation occurs when a body changes size and shape in the presence of stress and it fractures because it is no more elastic but plastic. They produce faults and other fractures seen in rocks.
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The answer is:
13. B
14. D
15. A
Melanin. “Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin color of darker-skinned humans. The skin color of people with light skin is determined mainly by the bluish-white connective tissue under the dermis and by the hemoglobin circulating in the veins of the dermis.” -Wikipedia