Question

1. diffusion means that a. particles move around until they are distributed evenly. b. all particles cross a membrane. c. smaller particles move across the membrane faster. d. particles stop when they are halfway across the membrane. 6. the nucleus of a cell contains a. chromosomes b. stored food c. eggs d. fibres 7. if there is too much water outside a cell a. the cell will get wrinkled. b. the cell will drown. c. more water will move out of the cell. d. more water will move into the cell. dna is a large molecule. this molecule has specific sites that are called a. helixes b. codes c. genes d. proteins.

Explanation:

1. All living organisms are made of one or more cells, and the cell is the basic organizational unit of life. This is a fundamental concept in biology.
2. Diffusion is the movement of particles from an area of high - concentration to an area of low - concentration until they are distributed evenly. Smaller particles cross a membrane faster.
3. Osmosis is the movement of water across a semi - permeable membrane. If there is too much water outside a cell, more water will move into the cell and the cell may burst (not "drown" in a biological sense), if there is less water outside, water will move out and the cell will wrinkle. DNA is a large molecule with specific sites called genes that code for proteins.

Answer:

1. a. The cell is the basic organizational unit of life.
2. c. Smaller particles cross a membrane faster.
3. c. more water will move into the cell.