2023 Biology S1 Review

Front

What explains the difference between muscle cells and blood cells?

Back

Different genes are activated in muscle cells than in blood cells.

Front

What happens when liver is dropped into hydrogen peroxide?

Back

The liver contains an enzyme that breaks down hydrogen peroxide.

Front

What does a food pyramid illustrate about energy at different levels?

Back

Energy is lost to the environment at each level, so less mass can be supported at each higher level.

Front

What is the part of a DNA segment that forms connections between base pairs?

Back

Hydrogen bond.

Front

What type of succession occurs in an area with no soil?

Back

Primary succession.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to different traits.

Front

Define enzyme.

Back

A protein that acts as a catalyst to speed up chemical reactions in the body.

Front

What is ecological succession?

Back

The process of change in the species structure of an ecological community over time.

Front

What are pioneer species?

Back

The first species to colonize previously disrupted or damaged ecosystems.

Front

What is the role of a substrate in an enzyme reaction?

Back

The substance on which an enzyme acts.