Cell Structure and Function

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Questions and Answers

Which of the following best describes the primary function of the cell membrane?

Synthesizing proteins
Storing the cell's genetic material
Regulating the passage of substances in and out of the cell (correct)
Generating energy through cellular respiration

The nucleolus is responsible for the synthesis of lipids within the cell.

False (B)

What is the main function of ribosomes?

protein synthesis

The powerhouse of the cell, responsible for generating ATP through cellular respiration, is the ______.

mitochondrion Signup and view all the answers

Match the following cell structures with their primary functions:

Lysosomes = Break down cellular waste Endoplasmic Reticulum = Protein and lipid synthesis Golgi Apparatus = Modifies, sorts, and packages proteins Cytoskeleton = Provides structural support and facilitates movement Signup and view all the answers

Which component of the cell membrane is primarily responsible for creating a barrier to water-soluble substances?

Phospholipid hydrophobic tail (D) Signup and view all the answers

DNA in the nucleus is organized into ribosomes.

False (B) Signup and view all the answers

What is the role of nuclear pores?

control the movement of molecules between the nucleus and cytoplasm Signup and view all the answers

Ribosomes that are bound to the endoplasmic reticulum produce proteins for ______ or use in the cell membrane.

secretion Signup and view all the answers

What is the primary difference between the rough ER (RER) and the smooth ER (SER)?

RER has ribosomes attached, while SER lacks ribosomes. (B) Signup and view all the answers

The Golgi apparatus synthesizes proteins.

False (B) Signup and view all the answers

What are cisternae?

flattened membranous sacs that make up the golgi apparatus Signup and view all the answers

The inner membrane of the mitochondria is folded into ______, which increase the surface area for ATP production.

cristae Signup and view all the answers

Which of the following describes the role of lysosomes?

Breaking down cellular waste and debris (A) Signup and view all the answers

Microfilaments provide tensile strength and stability to the cytoskeleton.

False (B) Signup and view all the answers

Name two unique structures found in plant cells but not in animal cells.

chloroplasts and cell walls Signup and view all the answers

Cells communicate with each other through chemical signals that bind to ______ on the cell surface or inside the cell.

receptors Signup and view all the answers

Which of the following is NOT a type of cell signaling?

Binary fission (A) Signup and view all the answers

Mitosis results in four genetically different daughter cells.

False (B) Signup and view all the answers

During which stage of cellular respiration is glucose broken down into pyruvate?

Glycolysis (D) Signup and view all the answers

Flashcards

Cell Biology

Study of cells, their structure, function, and behavior.

Cell Membrane

Selectively permeable barrier that regulates substance passage into and out of the cell.