50 POINTS YALL 50 POINTS** 1. Describe the basic molecular structures and primary functions of the four major categories of biological macromolecules. In your explanation, include their molecular structures, their monomers (building blocks), and their basic function in living organisms.
2. Describe what happens when an enzyme is placed in environments that have different pH levels or temperatures than its regular environment.
3. he human body consists of approximately 60% water. Which property of water allows humans to maintain a stable body temperature?
4. Which property of water allows it to move up from the roots of plants to the its leaves for photosynthesis to occur.
5. Describe what cause water to have polarity and what makes it so “sticky”.
6. Explain why water is considered to be a “universal” solvent.
7. Explain why ice floats in a cup of water.

See below

Explanation:

1. Nucleic acids: Contain phosphate, sugar group, and a base. Its the building block(monomer) of DNA and RNA.

Carbohydrates: Made out of Oxygen, carbon, and hydrogen. They mainly work as power source. Their monomers are glucose, frutcotse, and galactose.  

Lipid: Made of carbon, hydrogen, and oxygen. They are the fat(saturated and unsaturated fats). They are a chain of carbon with hydrogen bonding to the carbon.  

Protein: Contain oxygen, nitrogen, carbon, and hydrogen; sometimes contain sulfur. They have many uses in the body, their monoer is amino acid.

2. The enzyme might go through denaturation-they would lose their quaternary structure shape and stop functioning.

3. Water could absorb heat very well and let the heat out slowly when the outside temperature is lower than the body temperature, therefore can successfully maintain body temperature. This happens because breaking hydrogen bond between water takes heat.

4. Adhesion between water molecules and cellulose of the plant cell walls!(also you might want to add the cohesion aspect of water molecules sticking to molecules)

5. The negative charge of the Hydrogen half and the positive charge of the oxygen half; its polar status makes it possible to make hydrogen bond easily, therefore cohesion between water molecules can be formed easily.

6. Simple! Water can dissolve more chemicals than any other solvent.

7. When temperature decreases, the hydrogen bond strengths, therefore sticking the H2O molecules into a rigid shape with empty spaces between them. Therefore the density of ice is lower than liquid water-so it floats!

Hope this helps! Good luck to you in your biology course!

If you still have any question, feel free to leave them in the comments and I'll do my best to help.

Cheers!

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

they dont have any evidence