Answer:
Rugae
Explanation:
These are the inner folds of the stomach. The folds are pronounced in an empty stomach that is not yet distended by food. They also increase the surface area in which the food is in contact with digestive enzymes produced by the stomach walls.
Answer:
Explanation:
The switch from glutamic acid to valine in position 6 of hemoglobin (HB) forms the basis of sickle cell anemia disease pathology.
Valine is hydrophobic and it's chain is shorter than glutamic acid. The lack of the carboxylic acid and shortness of valine will result in loss of the ionic interactions formed between the glutamic acid's carboxylic group and other amino acids. A hydrophobic cavity will form in the beta sheet of HB due to the short and hydrophobic structure of valine. For these reasons, the HB molecule will be less stable and insoluble in water. The insolubility is thought to be caused by fibril formation between the valine interacting with hydrophobic pocket residues of the adjacent HB molecule. This would in turn affect binding of oxygen to HB.
Yes. In the beginning, glycolysis requires 2 ATP molecules.
One ATP allows for the phosphorylation of the glucose molecule to fructose-6-phosphate and another phosphorylation to fructose-1,
6-biphosphate. The fructose-1, 6- bisphosphate
is then cleaved into two glyceraldehyde-3-phosphates that then enter the energy
generating part of the glycolysis biochemical reaction.
Answer:
D) producer
Explanation:
Corn is on the bottom of this food chain. Corn takes energy from the sun and turns it into engery it and other animals that wat it can use.
Answer:
The correct answer is E. Arachidonic acid is the raw material for synthesis of eicosanoids.
Explanation:
Arachidonic acid is an essential omega-6 fatty acid formed by a 20-carbon chain with four double bonds. The presence of double bonds causes this molecule to have several sites that can be oxidized, allowing the formation of different lipids with different biological activities.
Arachidonic acid is part of phospholipids in cell membranes, and is the precursor of eicosanoid biosynthesis. Arachidonic acid can be synthesized from linoleic acid, one of the essential fatty acids required by most mammals.
