Biology Quiz on Isomers and Carbohydrates

Questions and Answers

What distinguishes isomers from each other?

They have different atomic masses.

They differ in the arrangement of atoms. (correct)

They contain different elements.

They have different numbers of electrons.

What is the primary function of carbohydrates?

Control of body temperature.

Protection of internal organs.

Formation of hormones.

Source of energy for all cell activities. (correct)

How do isotopes differ from each other?

They have different electron configurations.

They have different chemical properties.

They have different numbers of neutrons. (correct)

They have different numbers of protons.

What occurs during hydrolysis?

<p>Breakdown of a compound with the addition of water.</p> Signup and view all the answers

What is a characteristic of saturated fatty acids?

<p>Solid at room temperature.</p> Signup and view all the answers

Study Notes

Isomers and Isotopes

Isomers possess the same molecular formula but differ in structural arrangement.
Isotopes have the same number of protons but vary in neutron count, resulting in different atomic masses.

Hydrolysis and Dehydration

Hydrolysis entails breaking down compounds by adding water, a crucial process in digestion.
Dehydration involves the removal of water molecules, facilitating the formation of larger compounds.

Functions of Carbohydrates

Serve as a primary energy source for all cellular activities.
Contribute to structural integrity by building plant cell walls.
Form part of the exoskeletons in arthropods, providing support and protection.

Functions of Lipids

Energy storage: burning 1 gram of lipid yields 9 calories of heat.
Structural role: integral to phospholipids, key components of cell membranes.
Endocrine functions: lipids are precursors to hormone synthesis.
Provide protection for internal organs and act as heat insulators.

Characteristics of Fats

Predominantly found in animal sources.
Saturated fatty acids are commonly present, which are solid at room temperature, indicating higher hydrogen saturation.

Description

Test your knowledge on the concepts of isomers, isotopes, hydrolysis, and dehydration. This quiz also covers the functions of carbohydrates in living organisms, highlighting their importance in energy production and structural roles. Perfect for biology students looking to reinforce their understanding!