Answer:
Products of the pentose phosphate pathway contribute to reductive biosynthesis reactions
Pentose phosphate pathway activity is high in rapidly diving cells.
Glucose-6-Phospjate is common to glycolysis and the pentose phosphate pathway
Explanation:
Glycolysis is the major catabolic fate of glucose 6-phosphate. However, oxidation of glucose 6-phosphate to pentose phosphates occurs by the pentose phosphate pathway. Therefore, glucose 6-phosphate is common to glycolysis and pentose phosphate pathway.
Pentose phosphate pathway uses NADP+ as an electron acceptor, yielding NADPH. Rapidly dividing cells, such as the cells of bone marrow and skin use the pentoses as one of the precursors for the synthesis of RNA, DNA, and coenzymes like NADH, FADH2, and coenzyme A.
The NADPH formed during pentose phosphate pathway is needed for reductive biosynthesis by many tissues. For instance, liver and adipose tissues carry out the extensive synthesis of fatty acid and require NADPH. Likewise, the tissues involved in the active synthesis of cholesterol and steroid hormones (for example, adrenal gland and gonads) also require the NADPH which in turn is provided by the pathway.
The answer is it begins at the PYLORIC SPHINCTER and ends at
the ILEOCECAL SPHINCTER. The pyloric sphincter is a group of smooth muscle at
the joint between the pylorus of the stomach and the duodenum of the small
intestine. It plays a vital role in digestion, where it acts as a valve to
controls the flow of moderately digested food from the digestive to the small
intestine. Ileocecal is a sphincter muscle valve that split up the small
intestine and the large intestine.
Answer: Directional Selection.
Explanation: Earlier the ancestors of the giraffe had shorter neck as compared to the giraffe of the present time.
They were not able to access the plants that lied at a higher height.They was some changes in the phenotype of the giraffe in which the giraffe has long necks to access the plants at height.
In directional selection the extreme form is preferred over other traits. Example: The long neck giraffe were selected over short neck.
Answer:
Small populations tend to lose genetic diversity more quickly than large populations due to stochastic sampling
Explanation: