Biology Unit 4: Cell Types

What is the theory that describes the origin of mitochondria and chloroplasts in eukaryotic cells?

Which characteristic does not apply to the structure of the plasma membrane?

Which of the following structures plays a crucial role in the synthesis of proteins?

The term describing the movement of molecules from an area of higher concentration to an area of lower concentration without energy is called?

Which statement about the rough endoplasmic reticulum is accurate?

Which of the following statements best describes the function of the central vacuole in plant cells?

The structures that enable certain bacteria to adhere to surfaces and are involved in the formation of biofilms are called:

Which of the following is not true of the nuclear envelope?

The function of the nucleolus is to:

Which of the following organelles is most directly involved in the synthesis of proteins?

Which of the following is not a function of the eukaryotic cytoskeleton?

The organelle that is primarily involved in the synthesis of lipids and detoxification of harmful substances is the:

Which of the following statements is true about chloroplasts?

Central Vacuole in Plant Cells

Central vacuole stores water, nutrients, and waste products.

Bacterial Structures

Fimbriae enable certain bacteria to adhere to surfaces and assist in biofilm formation.

Nuclear Envelope

Nuclear envelope is a double membrane structure, has pores for material passage, and is continuous with the endoplasmic reticulum.

Nucleolus Function

Nucleolus is responsible for producing ribosomal RNA (rRNA).

Protein Synthesis

Ribosomes are the primary organelles involved in protein synthesis.

Cytoskeleton Functions

Eukaryotic cytoskeleton maintains cell shape, assists in movement, and supports organelles, but does not synthesize proteins.

Smooth Endoplasmic Reticulum

Smooth endoplasmic reticulum is involved in lipid synthesis and detoxification of harmful substances.

Chloroplasts

Chloroplasts are found in plant cells and some protists, contain their own DNA, and are the site of photosynthesis.

Citric Acid Cycle

The citric acid cycle occurs in mitochondria of eukaryotic cells.

Endosymbiotic Theory

The endosymbiotic theory explains the origin of mitochondria and chloroplasts in eukaryotic cells.

Plasma Membrane Characteristics

Plasma membrane is selectively permeable, contains phospholipids and proteins, and has cholesterol in animal cells; however, it is not rigid and static.

Structures in Protein Synthesis

Ribosomes are key structures involved in protein synthesis alongside rough endoplasmic reticulum.

Molecule Movement

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration without using energy.

Rough Endoplasmic Reticulum

Rough endoplasmic reticulum has ribosomes on its surface, is involved in protein synthesis, and is continuous with the nuclear envelope.

This quiz covers Unit 4 of the biology curriculum, focusing on prokaryotic and eukaryotic cells. Test your knowledge about cell structures and their functions, including the role of the central vacuole in plant cells and bacterial adherence. Perfect for students reviewing this crucial topic.