Cell Biology Fundamentals

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Questions and Answers

Which of the following is NOT a tenet of the cell theory?

All cells arise from spontaneous generation. (correct)
All cells arise from pre-existing cells.
The cell is the basic unit of structure and organization in organisms.
All living organisms are composed of one or more cells.

Which of the following processes is NOT directly associated with the endoplasmic reticulum?

ATP synthesis (correct)
Lipid synthesis
Protein synthesis
Detoxification

A cell is observed to have a high rate of protein synthesis. Which of the following organelles would you expect to be particularly abundant in this cell?

Peroxisomes
Smooth endoplasmic reticulum
Ribosomes (correct)
Lysosomes

Which type of cell signaling involves hormones being released into the bloodstream to act on distant target cells?

Endocrine signaling (C) Signup and view all the answers

Which of the following represents the correct sequence of events in the cell cycle?

G1 phase → S phase → G2 phase → M phase (D) Signup and view all the answers

What is the primary role of the Golgi apparatus in eukaryotic cells?

Modifying, sorting, and packaging proteins and lipids (A) Signup and view all the answers

Which component of the cytoskeleton is primarily involved in muscle contraction?

Microfilaments (A) Signup and view all the answers

What is the primary function of apoptosis?

Eliminating damaged or unnecessary cells in a controlled manner (B) Signup and view all the answers

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Prokaryotic cells lack a nucleus. (A) Signup and view all the answers

What process do plant cells use to convert light energy into chemical energy?

Photosynthesis (D) Signup and view all the answers

Flashcards

What is Biology?

The scientific study of life, including structure, function, growth, origin, evolution, and distribution of living organisms.

What is Cell Biology?

Studies cells, their physiological properties, structures, organelles, interactions, life cycle, division, and death at microscopic and molecular levels.

What is the Cell Theory?

All living organisms are composed of one or more cells; the cell is the basic unit of structure and organization; all cells arise from pre-existing cells.

What are Prokaryotic Cells?

Cells lacking a nucleus and other membrane-bound organelles; generally smaller and simpler than the alternative.