Cell Structures
What organelle controls most of the activities of a eukaryotic cell?
The nucleus
What is the movement of particles from an area of high concentration to an area of low concentration called?
Diffusion
During which stage of the cell cycle is DNA copied?
The S (synthesis) phase of interphase
Which type of biomolecule provides cells with a major source of usable energy?
Carbohydrates, specifically glucose.
What organelle is the main site of cellular respiration and ATP production?
The mitochondrion
What is the main difference between active and passive transport?
Active transport requires energy from ATP, while passive transport does not require cellular energy.
What is the main purpose of mitosis?
Mitosis produces genetically similar daughter cells and is important for growth, repair, and cell replacement.
What are proteins made from?
Amino acids
Why is the structure of a cell related to its function? Give one example.
Different cell structures are specialized for specific functions. Examples may vary.
An animal cell is placed in a solution with a higher solute concentration outside the cell. What will happen to the cell? Explain why.
Water will move out of the cell through osmosis. The cell will lose water and may shrink.
Why must DNA be copied before a cell divides?
Each daughter cell needs a complete copy of the organism's genetic information.
Choose one type of biomolecules and explain one important role it plays in living organisms.
Answers will vary.