Question:What are the different types of covalent bonds? Explain the characteristics of each, and how these types of bonds form.
answer:
Covalent bonds include single, double, and triple bonds and are composed of sigma and pi bonding interactions where 2, 4, or 6 electrons are shared respectively. Covalent compounds typically have lower melting and boiling points than ionic compounds. i hope this helps you i wish you a grate weekend and thanks giving
Answer:
aorta, capillaries
Explanation:
Blood pressure is highest as its leaves the heart through the aorta and gradually decreases as it enters smaller and smaller blood vessels (arteries, arterioles, and capillaries).
Answer:
The correct option is D. The nerve and red blood cells will turn on and off different portions of their DNA, using different genes to make different proteins.
Explanation:
A zygote is totipotent which means it has the ability to differentiate into any cell type found in the body along with the placental cells.
The nerve and red blood cells are specialized cells and they cannot differentiate into any other cell type.
All cells in the body are formed from the zygote. All the cells in the body have the same chromosomes and the same genes. However, these cells become specialized because certain part of the DNA is activated in one type of cell which helps it perform its function. Different genes are activated in different specialized cells which are able to transcribe and translate.
1. plants do not need and complex excretory organ because it creates a very small amount or nitrogenous waste.
Answer;
B is the product of enzyme 1 and the substrate for enzyme 2.
Explanation;
-Enzymes are very efficient catalysts for biochemical reactions. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
-The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.