Upper surface of base of the skull
When blood is in the lungs,
where oxygen is plentiful, oxygen easily binds to the first subunit and then quickly fills up the remaining ones. Then, as blood circulates through the body, the oxygen level drops while that of carbon dioxide increases. In this environment, hemoglobin releases its bound oxygen.
1. The binding of an inhibitor can stop a substrate from entering the enzyme's active site and/or hinder the enzyme from catalyzing its reaction. Inhibitor binding is either reversible or irreversible. Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalent bond formation).
2. Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds.
hope this helps
Answer:
D. The genotype and the environment both affect phenotype.
Explanation:
Phenotype is the outward expression or make up of an organism. The phenotype is simple the physical outlook of an organism. It is as a result of the combination of two major factors which are the genetic make up(genotype) and the environment. When both combines, an organism's pheontype is built and produced.
If the environment is lacking, a gene might not successfully express itself in an organism. Also, an organism might have the right environment but the gene is lacking.
Chordates include many species, and humans are also chordates!
some adaptations that both humans (and other chordates) and plants needed to do to live on land were:
-protect the offspring from the environment (before the offspring could be just released into water) for example by covering seeds by shells
-evolve pores in the skin for gas and other substance exchange
-protection from drying up -a better outside layer, such as the skin!
