Nucleic acids are composed of monomers called Nucleotides
Nucleic acids are made of monomers known as Nucleotides, and there are 3 parts to Nucleotides - They are a nitrogenous base, a pentose sugar and a phosphate group
Answer:
B. Predation removes slower antelope from the herd.
Explanation:
Natural selection is defined as the differential survival and reproduction of individuals due to differences in the physical characteristics.
A predator-prey relationship results in a very fast-slow dynamical system for rapid predator evolution.
Predation removes slower antelope from the herd and hinders passage of the slow trait to offsprings. The ones who are fast reproduce and give birth to other fast animals.
Answer: a) substrate and cofactors b) covalent modification
Explanation:
Metabolic pathways involve all the chemical processes takes place in the enviornment or in an organisms.The metabolic pathways are controlled through the catalytic activities of enzymes.
The availability of enzyme is regulated by substrate and cofactors present in enzyme and enzyme activity is commonly regulated via covalent modification.
Enzymes are highly selective in nature and bind to a specific substarte only. The active site in enzyme binds with the substrate to form enzyme substrate complex. Coactors assist the enzyme activity, without cofactor enzyme can not perform its activity.
Hence enzyme availibility is regulated by substrate and cofactors regulates.
Covalent modifications regulates activity of enzyme as it involves addition and removal of chemical group to synthesis required protein. It can change the chemical properties of the site by targeting one or multiple amino acid.
Thus the correct answer is a) substrate and cofactors b) covalent modification
The property of carbon that allows it to make very large organic molecules would be the ability of carbon to form a maximum of 4 covalent bonds. Due to its 4 valence or outermost electrons.
A.Osmosis occurs through a semi permeable membrane. Diffusion occurs in permeable membrane.
