Biology STAAR 2023

Front

What is the base pairing rule in DNA?

Back

In DNA, adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G).

Front

What is asexual reproduction?

Back

Asexual reproduction is a mode of reproduction where offspring are produced from a single parent without the involvement of gametes, resulting in genetically identical individuals.

Front

How does genetic diversity benefit a population?

Back

Genetic diversity increases a population's ability to adapt to environmental changes and reduces the risk of extinction.

Front

What is the role of roots in plants during drought conditions?

Back

Roots absorb water and nutrients from the soil; during drought, increasing root growth helps maximize water uptake.

Front

What is punctuated equilibrium in evolution?

Back

Punctuated equilibrium is a theory that suggests species remain stable for long periods, interrupted by brief periods of rapid change.

Front

What is active transport in cells?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is passive transport in cells?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, occurring along the concentration gradient.

Front

What is the significance of ATP in cellular processes?

Back

ATP (adenosine triphosphate) is the primary energy carrier in cells, providing energy for various biological processes.

Front

What is the difference between concentration gradient and equilibrium?

Back

A concentration gradient is the difference in concentration of a substance across a space, while equilibrium is the state where concentrations are equal.

Front

What is cloning in biology?

Back

Cloning is the process of producing genetically identical individuals from a single parent organism.