Diffusion
A substance is moving from a region of high concentration to a region of low concentration without the need for energy. This process is called:
A. Active transport
B. Diffusion
C. Osmosis
D. Translocation
B
The movement of water molecules across a partially permeable membrane from a region of higher water potential to a region of lower water potential is called:
A. Facilitated diffusion
B. Active transport
C. Diffusion
D. Osmosis
Osmosis
Movement of ions from a low concentration area to a high concentration area, requiring energy, is known as:
A. Diffusion
B. Active transport
C. Osmosis
D. Facilitated diffusion
Active transport
Which of the following is the correct monomer (building block) for a nucleic acid?
A. Amino acid
B. Fatty acid
C. Glycerol
D. Nucleotide
D
What is the primary function of carbohydrates in living organisms?
A. Insulation and hormone production
B. Energy source and structural component (e.g., cellulose)
C. Catalysis of reactions (enzymes) and structural support (e.g., collagen)
D. Genetic information storage and transmission
B
Define diffusion
The net movement of molecules from an area of high concentration to an area of low concentration down their concentration gradient
Which biological molecule is composed of a long chain of amino acids?
A. Lipid
B. Carbohydrate
C. Protein
D. Nucleic acid
Protein
Why is the diffusion of gases important?
It allows for gas exchange in organisms to provide useful gases for processes like respiration and to remove waste gases
How does temperature affect the rate of diffusion?
As the temperature increases, so does the rate of diffusion as the particles have more kinetic energy and move faster