Biology STAAR Practice #1

Front

What is the main organ of the nervous system?

Back

The brain is the main organ of the nervous system.

Front

What organ is part of the integumentary system?

Back

The skin is part of the integumentary system.

Front

What do cyclins do in cell replication?

Back

Cyclins signal cells to progress through stages of cell replication.

Front

What can uncontrolled production of cyclins lead to?

Back

Uncontrolled production of cyclins can lead to the formation of tumors.

Front

How do resistant insects affect pesticide effectiveness?

Back

Resistant insects survive to reproduce, creating a population that is also resistant.

Front

What is the cell cycle?

Back

The cell cycle is the series of events that take place in a cell leading to its division and replication.

Front

Why is the cell cycle important for frogs?

Back

The cell cycle allows frogs to grow, develop, and reproduce.

Front

What is the role of pesticides in agriculture?

Back

Pesticides are used to protect plants from being eaten by insects.

Front

What is genetic mutation?

Back

A genetic mutation is a change in the DNA sequence that can lead to new traits.

Front

What is the significance of reproduction in resistant insect populations?

Back

Reproduction allows resistant insects to pass on their traits to the next generation.