Biology 1 - Semester Exam Study Guide - REGULAR Version - FINAL

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semipermeable membrane from an area of high water concentration to an area of low water concentration.

Front

What is the function of the nucleus in a cell?

Back

The nucleus is the control center of the cell, containing DNA and regulating gene expression and cell division.

Front

What is a eukaryotic cell?

Back

A eukaryotic cell is a type of cell that has a nucleus and membrane-bound organelles, such as plant and animal cells.

Front

What is a prokaryotic cell?

Back

A prokaryotic cell is a simple, unicellular organism that lacks a nucleus and membrane-bound organelles, such as bacteria.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane proteins.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is the role of chloroplasts?

Back

Chloroplasts are organelles in plant cells that conduct photosynthesis, converting light energy into chemical energy.

Front

What is the structure of DNA?

Back

DNA is a double helix structure composed of nucleotides, which include a phosphate group, a sugar, and a nitrogenous base.

Front

What is the process of exocytosis?

Back

Exocytosis is the process by which a cell expels materials in vesicles that fuse with the plasma membrane.