AP Bio Semester 1 Mini Final

Front

Which type of molecules can easily cross the cell membrane unassisted?

Back

Small, nonpolar molecules can easily cross the cell membrane unassisted.

Front

What type of bond connects nitrogenous bases in DNA?

Back

Hydrogen bonds connect nitrogenous bases in DNA.

Front

What is a noncompetitive inhibitor?

Back

A noncompetitive inhibitor is a type of enzyme inhibitor that reduces enzyme activity regardless of substrate concentration.

Front

Which macromolecules contain phosphorus?

Back

Phosphorus can be found in nucleic acids and lipids.

Front

What is the dependent variable in an experiment measuring the effect of temperature on algal blooms?

Back

The dependent variable is the algae concentration.

Front

Define diffusion in biological terms.

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed.

Front

What is the structure of DNA?

Back

DNA is a double helix composed of two strands of nucleotides.

Front

What are the four main types of macromolecules?

Back

The four main types of macromolecules are carbohydrates, lipids, proteins, and nucleic acids.