Grade 10 Biology Unit Test

What is the function of the cell membrane?

• Regulates what enters and leaves the cell

• Stores genetic information

• Provides energy for the cell

• Helps the cell maintain its shape

Describe the structure of a plant cell.

• The structure of a plant cell includes the cell membrane, nucleus, and endoplasmic reticulum.

• The structure of a plant cell includes the cell wall, mitochondria, and ribosomes.

• The structure of a plant cell includes the vacuole, Golgi apparatus, and lysosomes.

• The structure of a plant cell includes the cell wall, cell membrane, cytoplasm, nucleus, chloroplasts, and vacuole.

Explain the process of photosynthesis.

• During photosynthesis, plants use water and nitrogen to produce carbon dioxide and oxygen.

• Photosynthesis is the process of plants converting oxygen and water into carbon dioxide and glucose.

• Plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

• Plants use moonlight to convert carbon dioxide and water into glucose and nitrogen.

What is the role of mitochondria in cellular respiration?

• Stores genetic information

• Produces ATP through oxidative phosphorylation

• Synthesizes proteins

• Regulates cell division

How does the field of view change with the magnification of a microscope?

• The field of view increases

• The field of view becomes blurry

• The field of view remains the same

• The field of view decreases

What is passive transport and give an example?

• Diffusion of oxygen and carbon dioxide

• Photosynthesis in plants

• Active transport of water and salt

• Diffusion of glucose and fructose

Differentiate between osmosis and diffusion.

• Osmosis involves the movement of particles, while diffusion involves the movement of water molecules.

• Osmosis and diffusion are the same process.

• Osmosis involves the movement of water molecules, while diffusion involves the movement of particles.

• Diffusion involves the movement of water molecules, while osmosis involves the movement of particles.

Explain the process of active transport in cells.

• The process of active transport involves the movement of molecules across a cell membrane from a region of higher concentration to a region of lower concentration, requiring energy in the form of ATP.

• Active transport does not require energy and happens from a region of higher concentration to a region of lower concentration.

• Active transport is a passive process that does not involve the movement of molecules across a cell membrane.

• The process of active transport involves the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy in the form of ATP.

What is the role of protein pumps in active transport?

• They break down molecules in the cell membrane

• They help maintain the cell's shape and structure

• They are not involved in active transport

• They transport molecules or ions across the cell membrane against their concentration gradient.

Describe the process of endocytosis and give an example.

• The process of endocytosis involves the cell taking in materials from the outside by engulfing them in a vesicle. An example of endocytosis is the uptake of nutrients by cells.

• Endocytosis is the process of cells breaking down nutrients to release energy. An example of endocytosis is the digestion of food in the stomach.

• Endocytosis is the process of cells dividing to form new cells. An example of endocytosis is the growth of a multicellular organism.

• The process of endocytosis involves the cell releasing materials to the outside by engulfing them in a vesicle. An example of endocytosis is the excretion of waste from cells.