1.true 2.false 3.the diffusion of water across a membrane 4.Rr
Answer:
Attached R side groups
Explanation:
The proteins are one of the important biomolecules which are directly coded by the genetic material of an organism.
The proteins are composed of the amino acids which possess, an amine group, a carboxylic group and an attached side group called the R group.
It is the R group of an amino acid which determines whether the amino acid will a polar or a non-polar amino acid molecule thus it determines the properties of the amino acid in terms of chemical properties. The R side group are involved in the formation of bonds with the substrate of the environment and the tertiary structure of the proteins.
Thus, the presence of different R group is the key difference in 20 amino acids.
Answer:
False, all plants cells have cell membrane, in addition most of them have also cell wall. They have both
The reasoning behind this could be a part of personal beliefs and or the opinion of that person viewing it as animal abuse. this point of view is based on the individual.
B. only 3% of water on earth is fresh
