AP Bio Midterm Review S24

Front

What do prokaryotic cells lack?

Back

Prokaryotic cells do not have membrane-bound organelles.

Front

What is adhesion in water molecules?

Back

Adhesion is when water sticks to other molecules that are not water.

Front

What is Batesian mimicry?

Back

Batesian mimicry is when several species of harmless snakes look like poisonous coral snakes.

Front

What is required for active transport?

Back

Active transport requires ATP and moves materials from low to high concentration, against the concentration gradient.

Front

What is the first step in a signal transduction pathway?

Back

The first step is binding a ligand to a receptor.

Front

What are membrane-bound organelles?

Back

Membrane-bound organelles are structures within a cell that are enclosed by membranes, such as the nucleus, mitochondria, and endoplasmic reticulum.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy (ATP) to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What is the role of ATP in cellular processes?

Back

ATP (adenosine triphosphate) serves as the primary energy currency of the cell, providing energy for various cellular functions.

Front

What is the significance of water's polarity?

Back

Water's polarity allows it to form hydrogen bonds, making it an excellent solvent and enabling unique properties like cohesion and adhesion.

Front

What is the function of receptors in signal transduction?

Back

Receptors bind to specific ligands (signals) and initiate a cellular response, playing a crucial role in communication between cells.