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.
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Answer:
A) The products of photosynthesis are the reactants of cellular
respiration.
Explanation:
Photosynthesis converts carbon dioxide and water into oxygen and glucose, so that cellular respiration converts oxygen and glucose into water and carbon dioxide.
Answer:
legumes
plants they eat
Explanation:
Legumes have bacteria attached to it to allow for nitrogen absorption
the bacteria provide the plant with nitrogen, then the plant is eaten (bacteria can no longer provide more nitrogen if eaten).
They are involved in a chemical digestion.
Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. It begins in the mouth when food mixes with saliva which contains enzyme salivary amylase that breaks down carbohydrates. It also occurs in the stomach where HCl and pepsin forms chyme and small intestine especially in the duodenum.
