Tennessee 7th Grade Science 1st quarter review

Front

What is an external stimulus?

Back

An external stimulus is a change in the environment that can be detected by an organism, such as a loud noise.

Front

What is an internal stimulus?

Back

An internal stimulus is a change that occurs within an organism, such as feeling hungry.

Front

What is an inherited trait?

Back

An inherited trait is a characteristic that is passed from parents to offspring through genes, such as height.

Front

What are adaptations?

Back

Adaptations are traits or behaviors that help an organism survive in its environment, such as camouflage, ability to survive cold weather, or hunting skills.

Front

Which organelle is found only in plant cells?

Back

Chloroplast is the organelle found only in plant cells, responsible for photosynthesis.

Front

What is the function of chloroplasts?

Back

Chloroplasts are responsible for converting sunlight into energy through photosynthesis.

Front

What is the difference between internal and external stimuli?

Back

Internal stimuli originate from within the organism (e.g., hunger), while external stimuli come from the environment (e.g., noise).

Front

Give an example of an adaptation for survival in cold weather.

Back

An example of an adaptation for survival in cold weather is having thick fur or blubber.

Front

What is the role of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, providing protection and structure.

Front

What is the function of mitochondria?

Back

Mitochondria are known as the powerhouse of the cell, generating energy through cellular respiration.