Answer:
the answer would be 3 and 4 hope this helps please mark me as brainlyist if right
Explanation:
Are a special type of interaction between species
Lipids are necessary in all cell membranes and all organisms have cell membranes.
Answer:
A fixed allele is an allele that is the only variant that exists for that gene in all the population
Explanation:
Answer:
pteridine reductase deficiency alters all reactions known to be dependent on tetrahydrobiopterin (BH4)
Explanation:
Hyperphenylalaninemia is a condition characterized by elevated concentrations of the amino acid phenylalanine in the blood. Dihydropteridine reductase deficiency (DHPR) is a severe type of hyperphenylalaninemia caused by the deficiency of tetrahydrobiopterin (BH4). BH4 helps to convert amino acids, including phenylalanine, to precursors of neurotransmitters. BH4 is an essential non-protein co-factor of enzymes associated with the biosynthesis of dopamine, serotonin, noradrenaline and adrenaline. DHPR is an inherited recessive disorder whose symptoms include mental deficiency, poor swallowing (dysphagia) and an abnormally small skull (microcephaly).