Answer: Phosphorylation reactions involve the addition of a phosphate group to another molecule called ADP (adenosine diphosphate)
Explanation:
Phosphorylation can of two kinds:
I) Substrate-level Phosphorylation which occurs when ATP is produced from the phosphorylation of ADP coupled to the loss of hydrogen atoms from an organic substrate
II) Oxidative Phosphorylation occurs when ATP is produced from the phosphorylation of ADP by using proton pump fuelled by the electron transport system.
Note that the difference between both (I and II) is that the former occurs independent of the electron transport system, UNLIKE the latter.
Answer: Pedigree's in breeding dogs show the history of the dog and there traits. With a pedigree you can find the disease a dog may succumb to from it's ancestors or physical features.
With pedigree dog breeders can also find out whether a dog is purebred or not purebred.
Explanation:
Ans.
Chromatin molecules are made up of DNA and histone proteins. Modification of chromatin structure include covalent, post-translational changes in histone proteins, present in chromation. Acetylation and methylation are two important histone modifications that affect structure of chromatin molecules.
Acetylation involves addition of an acetyl group to histones that increases transcription of DNA by loosen the association between DNA and nucleosome.
Methylation involves addition of a methyl group to histones that results in condensation of chromatin molecule and thus, decreases transcription of DNA.
Both acetylation and methylation are reversible processes.
Many chromatin modifications are genetic, means they can pass from one generation to another generation, called epigenetic modifications.
Thus, options B), C), D), E), and F).
When there is density it controls the high and low pressure the answer is A
Answer:
traits that hinder survival eventually disappear
Explanation:
living things adapt to their surroundings
