Bio111, Exam 1, Ch's 1-3 practice

Front

What is hydrogen bonding?

Back

Hydrogen bonding is the attraction between the hydrogen atom of one molecule and the oxygen atom of another molecule.

Front

What is adhesion in the context of molecular attraction?

Back

Adhesion is the attraction of molecules of one substance to molecules of another substance.

Front

What type of variable is the fertilizer in a plant growth experiment?

Back

The fertilizer is an independent variable, as it is the factor being changed to observe its effect on plant growth.

Front

What are eukaryotes?

Back

Eukaryotes are cells that contain a nucleus and other organelles enclosed within membranes.

Front

What is the smallest unit of life?

Back

The smallest unit of life that can carry out all functions of living things is a cell.

Front

Define cohesion in biological terms.

Back

Cohesion is the attraction between molecules of the same substance, such as water molecules sticking together.

Front

What is the role of a control variable in an experiment?

Back

A control variable is kept constant throughout the experiment to ensure that the results are due to the independent variable.

Front

What distinguishes prokaryotic cells from eukaryotic cells?

Back

Prokaryotic cells do not have a nucleus or membrane-bound organelles, while eukaryotic cells do.

Front

What is surface tension?

Back

Surface tension is the cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.

Front

What is an organelle?

Back

An organelle is a specialized structure within a cell that performs a specific function, such as the nucleus or mitochondria.