Q1. Which organelle produces most of the ATP used by a cell?

Background

Topic: Cell Structure & Function

This question tests your knowledge of cell organelles and their roles, specifically which one is responsible for energy (ATP) production.

Key Terms:

• Organelle: Specialized structure within a cell that performs a specific function.

• ATP (Adenosine Triphosphate): The main energy carrier in cells.

Step-by-Step Guidance

1. Recall that cells need energy to perform functions, and ATP is the molecule that stores and provides this energy.

2. Think about which organelle is often called the "powerhouse" of the cell because it generates most of the cell's ATP.

3. Review the functions of the ribosome, Golgi apparatus, and lysosome to rule out options that do not produce ATP.

Try solving on your own before revealing the answer!

Q2. Proteins are built from which smaller units?

Background

Topic: Biomolecules

This question tests your understanding of the building blocks of proteins and basic biochemistry terminology.

Key Terms:

• Protein: A macromolecule made of chains of smaller units.

• Amino acid: The monomer (building block) of proteins.

Step-by-Step Guidance

1. Recall that proteins are polymers, meaning they are made of repeating smaller units.

2. Review the four main types of biological macromolecules and their building blocks (proteins, nucleic acids, carbohydrates, lipids).

3. Match the correct building block to proteins by considering which option forms peptide bonds to create protein chains.

Try solving on your own before revealing the answer!

Q3. Water moves across a membrane toward the side with the higher solute concentration. What process is this?

Background

Topic: Membrane Transport

This question tests your understanding of how water moves across cell membranes and the terminology for different types of transport.

Key Terms:

• Osmosis: Movement of water across a semipermeable membrane toward higher solute concentration.

• Diffusion: Movement of molecules from high to low concentration.

Step-by-Step Guidance

1. Identify that the question is about water movement, not solute movement.

2. Recall which process specifically refers to water moving through a membrane.

3. Consider the direction of movement: water moves toward the side with more solute (higher concentration).

Try solving on your own before revealing the answer!

Q4. A red blood cell shrivels after being placed in a salty solution. The solution is:

Background

Topic: Tonicity & Cell Membranes

This question tests your understanding of how cells respond to different solution concentrations (tonicity).

Key Terms:

• Hypertonic: Solution with higher solute concentration than the cell, causing water to leave the cell.

• Hypotonic: Solution with lower solute concentration than the cell.

• Isotonic: Solution with equal solute concentration as the cell.

Step-by-Step Guidance

1. Recognize that a cell shriveling means it is losing water.

2. Recall that water moves from areas of lower solute concentration to higher solute concentration.

3. Determine which term describes a solution that causes water to leave the cell, making it shrink.

Try solving on your own before revealing the answer!

Q5. In a solution, what is dissolved in what?

Background

Topic: Solutions & Chemistry

This question tests your understanding of the terms solute and solvent in chemistry and biology.

Key Terms:

• Solute: The substance that is dissolved.

• Solvent: The substance that does the dissolving (often water in biology).

Step-by-Step Guidance

1. Recall the definitions of solute and solvent.

2. Think about a common example, like salt water: which part is the solute and which is the solvent?

3. Match the correct relationship: is the solute dissolved in the solvent, or vice versa?

Try solving on your own before revealing the answer!

Q6. Which molecule has the highest energy among ATP, ADP, and AMP?

Background

Topic: Cellular Energy

This question tests your knowledge of the energy content of different adenosine phosphates.

Key Terms:

• ATP: Adenosine triphosphate (three phosphates, highest energy).

• ADP: Adenosine diphosphate (two phosphates).

• AMP: Adenosine monophosphate (one phosphate).

Step-by-Step Guidance

1. Recall that each phosphate bond stores energy; more phosphates mean more stored energy.

2. Compare the number of phosphate groups in ATP, ADP, and AMP.

3. Determine which molecule has the most phosphate bonds and thus the most energy.

Try solving on your own before revealing the answer!

Q7. During which mitotic phase do chromosomes split apart?

Background

Topic: Cell Division (Mitosis)

This question tests your understanding of the stages of mitosis and what happens during each phase.

Key Terms:

• Anaphase: The stage where sister chromatids are pulled apart to opposite sides of the cell.

• Metaphase: Chromosomes align in the center.

Step-by-Step Guidance

1. Recall the sequence of mitosis: prophase, metaphase, anaphase, telophase.

2. Identify which phase involves the separation of sister chromatids.

3. Review what happens in each phase to match the correct one to chromosome splitting.

Try solving on your own before revealing the answer!

Q8. Which type of bond involves sharing electrons?

Background

Topic: Chemical Bonds

This question tests your understanding of the different types of chemical bonds found in biological molecules.

Key Terms:

• Covalent bond: A bond formed by sharing electrons between atoms.

• Ionic bond: A bond formed by transferring electrons.

Step-by-Step Guidance

1. Recall the difference between covalent and ionic bonds.

2. Think about which bond type is common in organic molecules and involves electron sharing.

3. Match the definition to the correct bond type.

Try solving on your own before revealing the answer!