A Quiz On Cell Organelles

2.

Where does protein synthesis occur?

Nucleus
Mitochondria
Rough Endoplasmic Reticulum
Centrioles

Correct Answer

A. Rough Endoplasmic Reticulum

Explanation

Protein synthesis occurs in the Rough Endoplasmic Reticulum. This is because the Rough ER is studded with ribosomes, which are responsible for protein synthesis. These ribosomes attach to the Rough ER and help in the production of proteins. Once the proteins are synthesized, they are then transported to other parts of the cell or outside the cell for their respective functions. Therefore, the Rough ER is the correct location for protein synthesis.

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3.

What are lysosomes responsible for?

Aerobic respiration and production of ATP
Contain enzymes for intracellular digestion
Regulates exchange between cytoplasm and nucleus
Contains DNA and regulates cell activity

Correct Answer

A. Contain enzymes for intracellular digestion

Explanation

Lysosomes are responsible for containing enzymes for intracellular digestion. Lysosomes are organelles within cells that contain digestive enzymes, which help break down waste materials, cellular debris, and foreign substances. These enzymes are important for maintaining cellular homeostasis and recycling nutrients.

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4.

What organelle is responsible for creating ribosomal subunits?

Golgi Apparatus
Nuclear Envelope
Nucleolus
Cytoplasm

Correct Answer

A. Nucleolus

Explanation

The nucleolus is responsible for creating ribosomal subunits. It is a small, dense region within the nucleus of a cell. The nucleolus contains DNA, RNA, and proteins, which are involved in the synthesis and assembly of ribosomes. Ribosomes are essential for protein synthesis, and the nucleolus plays a crucial role in their production.

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1

5.

What are chromosomes composed of?

DNA
ATP
Proteins
Glycolipids

Correct Answer

A. DNA

Explanation

Chromosomes are composed of DNA. DNA, or deoxyribonucleic acid, is a molecule that contains the genetic instructions for the development and functioning of all living organisms. It is organized into structures called chromosomes, which are located in the nucleus of cells. DNA is made up of nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base. These nucleotides are arranged in a specific sequence, forming the genetic code that determines an organism's traits and characteristics. Therefore, DNA is the correct answer for what chromosomes are composed of.

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6.

What organelle is involved in cell division?

Lysosomes
Ribosomes
Centrioles
Rough Endoplasmic Reticulum

Correct Answer

A. Centrioles

Explanation

Centrioles are the organelles involved in cell division. They play a crucial role in the formation of the mitotic spindle, which is responsible for separating the chromosomes during cell division. Centrioles are found in animal cells and are located near the nucleus. They help in organizing the microtubules and ensure the proper distribution of genetic material to the daughter cells. Therefore, centrioles are directly involved in the process of cell division.

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7.

Which organelle composes 25% of animal cells?

Mitochondria
Vacuole
Ribosomes
Golgi Apparatus

Correct Answer

A. Ribosomes

Explanation

Ribosomes are small organelles found in all cells, including animal cells. They are responsible for protein synthesis, which is a vital process in all living organisms. Ribosomes can be found in the cytoplasm of the cell and on the rough endoplasmic reticulum. They are composed of RNA and proteins and are involved in the translation of genetic information from DNA to produce proteins. While ribosomes are present in all cells, they do not make up 25% of the cell's volume or mass, making this answer incorrect.

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8.

What organelle is a membrane-bound sac for storage, digestion and waste removal?

Nucleus
Plasma membrane
Vacuole
Chloroplasts

Correct Answer

A. Vacuole

Explanation

A vacuole is a membrane-bound sac that is responsible for storage, digestion, and waste removal within a cell. It acts as a storage compartment for various molecules, such as water, ions, and nutrients. Additionally, it aids in the digestion of macromolecules and the removal of waste materials from the cell. Vacuoles are found in both plant and animal cells, although they are typically larger and more prominent in plant cells. Therefore, the correct answer is vacuole.

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9.

What organelles is labelled A?

Mitochondria
Ribosomes
Lysosomes
Vesicle

Correct Answer

A. Mitochondria

Explanation

The organelle labelled A in the given options is mitochondria. Mitochondria are double-membraned organelles found in most eukaryotic cells. They are often referred to as the "powerhouses" of the cell because they generate most of the cell's supply of adenosine triphosphate (ATP), which is used as a source of chemical energy. Mitochondria play a crucial role in cellular respiration, converting nutrients into ATP through a series of metabolic reactions.

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10.

What 4 organelles are labelled?

Ribosomes
Smooth Endoplasmic Reticulum
Rough Endoplasmic Reticulum
Golgi Apparatus
Nucleus
Cell Membrane
Vesicle
Cytoplasm
Mitochondria

Correct Answer(s)

A. Smooth Endoplasmic Reticulum
A. Rough Endoplasmic Reticulum
A. Nucleus
A. Mitochondria

Explanation

The correct answer is Smooth Endoplasmic Reticulum, Rough Endoplasmic Reticulum, Nucleus, and Mitochondria. These organelles are labeled because they are all distinct structures within a cell that perform specific functions. The smooth endoplasmic reticulum is involved in lipid synthesis and detoxification. The rough endoplasmic reticulum is responsible for protein synthesis and processing. The nucleus contains the cell's DNA and controls its activities. The mitochondria produce energy for the cell through cellular respiration.

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A Quiz On Cell Organelles

What organelle is responsible for packaging and modifying molecules such as vesicles?

Quiz Preview

Where does protein synthesis occur?

What are lysosomes responsible for?

What organelle is responsible for creating ribosomal subunits?

What are chromosomes composed of?

What organelle is involved in cell division?

Which organelle composes 25% of animal cells?

What organelle is a membrane-bound sac for storage, digestion and waste removal?

What organelles is labelled A?

What 4 organelles are labelled?