BIOLOGY

Which of the following describes unicellular organisms?

• Composed of multiple cells
• Perform biological functions with one cell
• Perform specific biological functions with specialized cells
• Composed of multiple specialized cell types

Which of the following organisms is an example of a multicellular organism?

• Bacteria
• Euglena
• Trees
• Amoeba

The protoplasmic mass consists of which two parts?

• Plasma membrane and cell wall
• Cytoplasm and nucleus
• Mitochondria and ribosomes
• Plasma membrane and DNA

What structure is found only in plant cells but not in animal cells?

• Plasma membrane
• Nucleus
• Cell wall
• Cytoplasm

The primary component that the plant cell wall is made of is:

• Cellulose
• Phospholipids
• Proteins
• Phosphates

The plasma membrane contains which molecules to support structure and function?

• Cellulose and starch
• Phospholipids, proteins, and cholesterol
• Glucose and insulin
• Nucleotides and proteins

Which part of the plasma membrane helps stabilize its structure?

• Phospholipids
• Cholesterol
• Carbohydrates
• Proteins

What is the role of surface proteins on the cell membrane?

• Receptors
• Transport channels
• Structural support
• No role

Which molecules act as channels for transport across the membrane?

• Cholesterol
• Embedded proteins
• Nucleotides
• Carbohydrates

What is the process by which molecules move from an area of high concentration to low concentration without energy usage?

• Active transport
• Diffusion
• Endocytosis
• Osmosis