Biology Final

1. What is the functional group associated with organic acids?

Carboxyl
Organic Acids

Alkyl

Amino

Hydroxyl

The functional group associated with organic acids is the carboxyl group, which consists of a carbonyl group bonded to a hydroxyl group.

Explanation

The functional group associated with organic acids is the carboxyl group, which consists of a carbonyl group bonded to a hydroxyl group.

2. What is the functional group known as sulhydryl and what properties does it exhibit?

MethylProperties: involved in DNA methylation

CarboxylProperties: acidic properties in amino acids

Sulhydryl
Properties: help with protein structure

AminoProperties: found in amino acids

Sulhydryl groups consist of a sulfur atom bonded to a hydrogen atom and are important for forming disulfide bonds in proteins, contributing to their structure and stability. The other three options are different functional groups with distinct properties and roles in biological molecules.

Explanation

Sulhydryl groups consist of a sulfur atom bonded to a hydrogen atom and are important for forming disulfide bonds in proteins, contributing to their structure and stability. The other three options are different functional groups with distinct properties and roles in biological molecules.

3. What are steroids?

Carbohydrates? molecules consisting of carbon, hydrogen, and oxygen, including sugars and starches.

Proteins? macromolecules composed of amino acids.

Nucleic acids? biopolymers essential for life, like DNA and RNA.

Steroids
? lipids characterized by a carbon
consisting of four fused rings
-hormones that regulate cellular
activities

Steroids are a specific type of lipid composed of four fused rings and play a crucial role in regulating cellular activities as hormones. Proteins, carbohydrates, and nucleic acids are different types of biomolecules with distinct structures and functions.

Explanation

Steroids are a specific type of lipid composed of four fused rings and play a crucial role in regulating cellular activities as hormones. Proteins, carbohydrates, and nucleic acids are different types of biomolecules with distinct structures and functions.

4. What does the change in free energy represent?

The change in free energy represents the heat released or absorbed in a reaction.

The change in free energy represents the total energy change in a system.

The change in free energy represents the total enthalpy change in a system.

The correct answer is that the change in free energy represents the maximum useful work obtainable from a process. It is a measure of the energy available to do work.

Explanation

The correct answer is that the change in free energy represents the maximum useful work obtainable from a process. It is a measure of the energy available to do work.