Introduction To Cells
This quiz covers the first week of study on cells.
Questions and Answers
- 1.
What are all living things made of?
- A.
Cork
- B.
Organs
- C.
Bacteria
- D.
Cells
Correct Answer
D. CellsExplanation
Living things are made up of cells. Cells are the basic structural and functional units of life. They are the building blocks of all living organisms, from the simplest single-celled organisms to complex multicellular organisms like plants and animals. Cells carry out various functions necessary for life, such as obtaining nutrients, reproducing, and responding to their environment. They are responsible for the growth, development, and maintenance of living organisms. Therefore, cells are the fundamental components that make up all living things.Rate this question:
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- 2.
Cells are
- A.
the huge, building blocks of all living things
- B.
the tiny, microscopic building blocks of all living things
- C.
Places where people build homes
- D.
Animals and plants
Correct Answer
B. the tiny, microscopic building blocks of all living thingsExplanation
Cells are the tiny, microscopic building blocks of all living things. They are the basic units of structure and function in organisms, responsible for carrying out all the necessary processes for life. Cells vary in size and shape, but they are all incredibly small and can only be seen under a microscope. They are the fundamental components that make up tissues, organs, and ultimately, entire organisms.Rate this question:
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- 3.
Which cell part is found in plant cells but not in animal?
- A.
Nucleus
- B.
cell membrane
- C.
Cell wall
- D.
Mitochondria
Correct Answer
C. Cell wallExplanation
The cell wall is a rigid structure found in plant cells that provides support and protection. It is made up of cellulose and is responsible for maintaining the shape of the cell. Animal cells do not have a cell wall, instead they have a flexible cell membrane that surrounds and protects the cell. Therefore, the correct answer is cell wall.Rate this question:
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- 4.
Which of the following is a true statement about all living things?
- A.
They have one or more cells
- B.
They cannot sense change in their enviroment
- C.
They do not use energy
- D.
They cannot reproduce
Correct Answer
A. They have one or more cellsExplanation
All living things have one or more cells. Cells are the basic structural and functional units of life. They are responsible for carrying out essential processes such as metabolism, growth, and reproduction. From single-celled organisms like bacteria to complex multicellular organisms like plants and animals, cells are the building blocks of life. They provide the necessary structure, support, and organization for living organisms to function and thrive. Therefore, it is true that all living things have one or more cells.Rate this question:
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- 5.
Any individual living thing can be called an?
- A.
Alive
- B.
Membrane
- C.
Organism
- D.
Bird
Correct Answer
C. OrganismExplanation
An organism refers to any individual living thing, regardless of its specific characteristics or classification. It encompasses all living beings, including plants, animals, and microorganisms. The term "organism" is a broad and inclusive term that encompasses all forms of life on Earth.Rate this question:
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- 6.
All organisms
- A.
Grow
- B.
Get energy
- C.
Remove waste
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
All organisms grow, get energy, and remove waste. Growth is a fundamental characteristic of living organisms, as they increase in size and develop over time. Energy is essential for the functioning of cells and the survival of organisms, which they obtain through various metabolic processes. Waste removal is necessary to eliminate harmful substances and byproducts from the body, ensuring proper functioning and maintaining homeostasis. Therefore, the statement "all of the above" is correct as it encompasses all these essential processes that occur in organisms.Rate this question:
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- 7.
a group of cells that works together to carry out a particular task in an organism
- A.
Cells
- B.
Tissue
- C.
Alive
- D.
Leaf
Correct Answer
B. TissueExplanation
Tissue is the correct answer because it refers to a group of cells that work together to perform a specific function in an organism. Cells are individual units that make up tissues, and while they are alive, they do not necessarily work together in the same way as tissues do. A leaf is an example of an organ, which is made up of different types of tissues. Therefore, tissue best fits the description of a group of cells working together to carry out a particular task in an organism.Rate this question:
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- 8.
The thin outer layer in cells is called a
- A.
Nucleus
- B.
Organism
- C.
Tissue
- D.
Membrane
Correct Answer
D. MembraneExplanation
The correct answer is membrane. The thin outer layer in cells is called a membrane. The cell membrane acts as a barrier, controlling the passage of substances in and out of the cell. It is composed of a phospholipid bilayer with embedded proteins that help in various cellular functions such as transportation, signaling, and protection. The membrane is essential for maintaining the integrity and homeostasis of the cell.Rate this question:
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- 9.
The membrane protects the cell by
- A.
Digesting food
- B.
Moving it around
- C.
Making it hard
- D.
Controlling what goes in and out of the cell
Correct Answer
D. Controlling what goes in and out of the cellExplanation
The membrane of a cell is responsible for controlling what substances can enter or exit the cell. This selective permeability allows the cell to maintain a stable internal environment by regulating the movement of molecules such as nutrients, ions, and waste products. By controlling what goes in and out of the cell, the membrane helps to protect the cell from harmful substances and maintain its overall functionality.Rate this question:
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- 10.
Inorder to see a cell a person must use
- A.
A microscope
- B.
a telescope
- C.
A magnify glass
- D.
A pen
Correct Answer
A. A microscopeExplanation
A microscope is used to see cells because it has a high magnification power that allows for the visualization of tiny structures like cells. A telescope is used to see objects in the distance, not microscopic structures. A magnifying glass can be used to see small objects, but it may not have the necessary magnification power to see cells. A pen is not used for viewing cells at all. Therefore, the correct answer is a microscope.Rate this question:
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- 11.
Which of the following does not have cells
- A.
Plant
- B.
Animal
- C.
Rocks
- D.
Bacteria
Correct Answer
C. RocksExplanation
Rocks do not have cells because they are non-living and are composed of minerals and other inorganic substances. Cells are the basic structural and functional units of living organisms, such as plants, animals, and bacteria. Plants, animals, and bacteria are all living organisms that are made up of cells, which carry out various biological processes necessary for life. However, rocks are formed through geological processes and do not possess cellular structures or perform any biological functions.Rate this question:
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- 12.
An example of a single celled organism is called
- A.
Amoeba
- B.
Duck
- C.
Human
- D.
Cell
Correct Answer
A. AmoebaExplanation
Amoeba is an example of a single-celled organism. It belongs to the group of protists and is characterized by its shapeless and flexible body. Amoebas are capable of changing their shape and moving by extending their pseudopods. They obtain their nutrition by engulfing food particles through phagocytosis. Amoebas are found in various aquatic environments and play an essential role in the food chain as both predators and prey. They serve as a classic example of a unicellular organism due to their ability to carry out all necessary life functions within a single cell.Rate this question:
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- 13.
Humans have around how many cells in their body?
- A.
Thousand
- B.
Billion
- C.
Trillion
- D.
One
Correct Answer
C. TrillionExplanation
The correct answer is trillion. The average human body is estimated to have around 30 to 40 trillion cells. These cells make up various tissues and organs in the body, performing different functions to maintain overall health and functionality. Each cell has a specific role and contributes to the body's complex systems, such as the immune system, nervous system, and circulatory system. The vast number of cells in the human body allows for intricate processes and interactions that are essential for life.Rate this question:
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- 14.
Red blood cells are
- A.
Long and thin layered
- B.
Look like plates and provide nutrients and oxygen
- C.
Flat an protect from heat and cold
- D.
Make food
Correct Answer
B. Look like plates and provide nutrients and oxygenExplanation
Red blood cells are disc-shaped and have a concave center, giving them the appearance of plates. This shape allows for a larger surface area, which enhances their ability to carry oxygen and nutrients throughout the body. The flat shape also enables them to squeeze through narrow blood vessels and deliver oxygen to tissues efficiently. Therefore, the correct answer is that red blood cells look like plates and provide nutrients and oxygen.Rate this question:
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- 15.
Which of the following is NOT a primary function of Langerhans cells in the epidermis?
- A.
Production of keratin
- B.
Immune defense
- C.
Antigen presentation
- D.
Phagocytosis
Correct Answer
A. Production of keratinExplanation
Langerhans cells are dendritic cells found in the epidermis and play a crucial role in the skin's immune system. Their primary functions include capturing and processing antigens, presenting them to T cells, and initiating an immune response. Keratin production, however, is the primary function of keratinocytes, the most abundant cell type in the epidermis.Rate this question:
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- 16.
Nerve cells are
- A.
Cells that send an recieve messages from the brain
- B.
Circulate oxygen and nutrients
- C.
Work together to form tissues
- D.
Protect from heat and cold
Correct Answer
A. Cells that send an recieve messages from the brainExplanation
Nerve cells, also known as neurons, are specialized cells that transmit and receive electrical signals, allowing for communication within the nervous system. These cells play a crucial role in sending messages from the brain to different parts of the body and vice versa. They are responsible for coordinating various bodily functions, including sensory perception, motor control, and cognitive processes.Rate this question:
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- 17.
A microorganism
- A.
Made of only one cell
- B.
Bacteria
- C.
Amoeba
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The correct answer is "all of the above" because both bacteria and amoeba are examples of microorganisms that are made up of only one cell. Bacteria are single-celled organisms that can be found almost everywhere, while amoeba is a type of single-celled protist that moves and captures food using pseudopods. Therefore, all options listed in the question are correct examples of microorganisms made of only one cell.Rate this question:
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- 18.
Plant cells are green because they have
- A.
Chloroplast
- B.
Slime
- C.
Leaves
- D.
Cell walls
Correct Answer
A. ChloroplastExplanation
Plant cells are green because they contain chloroplasts. Chloroplasts are specialized organelles found in plant cells that contain chlorophyll, a pigment responsible for capturing sunlight during photosynthesis. Chlorophyll absorbs light energy, particularly in the blue and red regions of the electromagnetic spectrum, and reflects green light, giving plants their characteristic green color. The presence of chloroplasts and chlorophyll in plant cells allows them to convert sunlight into energy through photosynthesis, which is essential for their growth and survival.Rate this question:
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- 19.
What is a characteristic of all living things? Describe how plants and animal cells are alike and ddifferent?
- 20.
In eukaryotic cells, the __________ is the organelle responsible for modifying, sorting, and packaging proteins for secretion or use within the cell.
Correct Answer
Golgi apparatus, Golgi Apparatus, golgi apparatusExplanation
The Golgi apparatus, also known as the Golgi complex or Golgi body, is a critical organelle in eukaryotic cells. It processes proteins and lipids synthesized in the endoplasmic reticulum (ER), modifying them as necessary before sorting and packaging them into vesicles. These vesicles are then transported to their destination, either inside or outside the cell. This function is essential for maintaining cellular organization and function.Rate this question:
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Sep 30, 2024Quiz Edited by
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Jan 15, 2010Quiz Created by
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