9th Grade Biology

Front

What is the structure of DNA?

Back

DNA is composed of two strands that form a double helix.

Front

What are the four main types of macromolecules?

Back

The four main types of macromolecules are carbohydrates, lipids, proteins, and nucleic acids.

Front

What is the primary function of proteins in the body?

Back

Proteins serve various functions including building and repairing tissues, acting as enzymes, and supporting immune function.

Front

What role do lipids play in the body?

Back

Lipids provide long-term energy storage, insulation, and make up cell membranes.

Front

How does energy transfer through a food chain?

Back

Energy decreases as it moves up the food chain, with only about 10% of energy being transferred to the next trophic level.

Front

What is a top predator?

Back

A top predator is an organism that is at the top of the food chain and has no natural predators.

Front

What is the function of nucleic acids?

Back

Nucleic acids, such as DNA and RNA, store and transmit genetic information.

Front

What is the difference between saturated and unsaturated fats?

Back

Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.

Front

What is the significance of enzymes in biological processes?

Back

Enzymes are catalysts that speed up chemical reactions in the body without being consumed.

Front

What is the role of carbohydrates in living organisms?

Back

Carbohydrates provide a primary source of energy and are involved in cell structure.