Biology STAAR cram session part 1A (1-25)

Front

What type of mutation affects only the organism and not future generations?

Back

Mutations in somatic cells (e.g., nerve cells and brain cells) affect only the individual and are not passed to offspring.

Front

What processes are represented by cell activity across a cell membrane?

Back

Transport of molecules and homeostasis.

Front

What environmental factor could cause a response in organisms as shown in an illustration?

Back

Little available water.

Front

What is a key difference between a virus and a cell?

Back

Cells reproduce independently, while viruses require a host cell to replicate.

Front

What does it mean if two frog populations do not breed with each other?

Back

They are in the same genus but are different species.

Front

What is homeostasis in biological systems?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite external changes.

Front

What is the role of a cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in traits or functions of an organism.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have both.

Front

What is the function of ribosomes in a cell?

Back

Ribosomes are responsible for protein synthesis.