Biology Exam 2020

Front

What is an isotonic solution?

Back

An isotonic solution is one where the amount of solute is equal on both sides of a membrane, resulting in equilibrium.

Front

How can the concentration of Na+ inside a cell be reduced?

Back

Excess Na+ ions will be moved out through protein channels.

Front

What are the main products of glycolysis?

Back

The main products of glycolysis are 2 ATP, 2 NADH, and 2 pyruvate molecules.

Front

What is diffusion?

Back

Diffusion is a form of passive transport that moves materials across the plasma membrane from a high concentration to a low concentration.

Front

Which organelle is responsible for producing ribosomes?

Back

The nucleolus is the organelle that produces ribosomes.

Front

Define passive transport.

Back

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

Front

What is osmosis?

Back

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

Front

Explain facilitated diffusion.

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move substances across the plasma membrane.

Front

What role do protein channels play in cellular transport?

Back

Protein channels facilitate the movement of specific ions and molecules across the cell membrane.

Front

What is the function of the endoplasmic reticulum?

Back

The endoplasmic reticulum is involved in the synthesis of proteins and lipids.