How are cohesion and surface tension related to the chemical properties of water?
a. all are properties related to hydrogen bonding
b. all have to do with ionic interactions.
c. all are results of the structure of the hydrogen atom.
d. all are produced by covalent bonding

The correct answer will be option-A

Explanation:

Cohesion is the property of the water which holds the water molecules together.

The cohesive property of the water is the result of the hydrogen bond formed between the hydrogen of the two water molecules. The cohesive property of the water results in another phenomenon called surface tension which represents the tendency of water surface to rupture under tension.

Since both processes are the results of the hydrogen bonds formed between the water molecules of the water, therefore, option-A is the correct answer.

1. b. Crista is s constituent part of mitochondrion.

2. c. Gobi complex and nucleus are separate structures with no particular relationship to each other.

Explanation:

The crista is an integral part of the mitochondria. As you already know, mitochondria is a cytoplasmic organelle. it has two members that delimit it, the outer membrane is completely smooth, however the inner membrane is composed of numerous folds, that are called crista, and that spread through the interior of the mitochondria. These crista have as main function to increase the surface of the inner membrane.

The Golgi complex is a cytoplasmic organelle, as is mitochondria. The nucleus, however, is a cell structure, it is totally separated from the golgi complex and there is no particular relationship between these two structures.

The golgi complex participates in the storage and distribution of substances in the cell, while the nucleus is responsible for housing and protecting genetic information.