Student Generated Quiz On Microscopy And Cells!
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Questions and Answers
- 1.
Which is the correct formula in finding the magnification of a specimen under a microscope:
- A.
Power of low power objective X power of high power objective = magnification
- B.
Power of high power objective + power of low power objective = magnification
- C.
Power of ocular lens X power of objective lens = magnification
- D.
Power of ocular lens + power of objective lens = magnification
Correct Answer
C. Power of ocular lens X power of objective lens = magnificationExplanation
The correct formula in finding the magnification of a specimen under a microscope is the power of the ocular lens multiplied by the power of the objective lens. This is because the ocular lens is responsible for magnifying the image formed by the objective lens. Multiplying the powers of both lenses gives the total magnification of the specimen.Rate this question:
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- 2.
Why did we focus on three different threads stacked on a slide under the microscope?
- A.
To discover what is meant by field of vision
- B.
To discover what is meant by magnification
- C.
To discover what is meant by depth of field
- D.
All of these.
Correct Answer
C. To discover what is meant by depth of fieldExplanation
The reason we focused on three different threads stacked on a slide under the microscope is to understand the concept of depth of field. By observing the threads at different depths, we can determine how the microscope's focus affects the clarity and visibility of objects at various distances. This helps us understand the concept of depth of field, which refers to the range of distances within an image that appear acceptably sharp.Rate this question:
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- 3.
What is the most commonly found chemical in cells?
- A.
Oxygen
- B.
Hydrogen
- C.
Water
- D.
Carbon dioxide
Correct Answer
C. WaterExplanation
Water is the most commonly found chemical in cells because it is essential for various cellular processes. It acts as a solvent, allowing for chemical reactions to occur within the cell. Water also helps in maintaining the shape and structure of cells, as well as regulating temperature. Additionally, it plays a crucial role in transporting nutrients and waste products in and out of cells. Therefore, water is vital for the survival and functioning of cells.Rate this question:
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- 4.
Why would a cell shrink when it was placed in salt water?
- A.
The concentration of water is lower outside the cell so water molecules move out
- B.
The concentration of water molecules is higher outside the cell so water molecules move in
- C.
Water moves in the direction that will help to establish equilibrium between the cell and it’s environment
- D.
Both a and c.
Correct Answer
D. Both a and c.Explanation
When a cell is placed in salt water, the concentration of water molecules outside the cell becomes lower than inside the cell. As a result, water molecules move out of the cell, causing it to shrink. Additionally, water moves in the direction that helps establish equilibrium between the cell and its environment. Therefore, both options "a" and "c" are correct explanations for why a cell would shrink in salt water.Rate this question:
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- 5.
The movement of the water molecules across a semi-permeable membrane is an example of
- A.
Diffusion
- B.
Osmosis
- C.
Neither a or b
- D.
Since osmosis is a special case of diffusion, both a and b.
Correct Answer
D. Since osmosis is a special case of diffusion, both a and b.Explanation
The movement of water molecules across a semi-permeable membrane is an example of both diffusion and osmosis. Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water molecules across a semi-permeable membrane. Since osmosis is a special case of diffusion, where water molecules move across a membrane, both diffusion and osmosis are applicable in this scenario.Rate this question:
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- 6.
What is the total magnification for and 10x ocular lens and a 50x objective lens?
- A.
50 x
- B.
500 x
- C.
60 x
- D.
600 x
Correct Answer
B. 500 xExplanation
The total magnification is calculated by multiplying the magnification of the ocular lens with the magnification of the objective lens. In this case, the ocular lens has a magnification of 10x and the objective lens has a magnification of 50x. Therefore, the total magnification is 10x * 50x = 500x.Rate this question:
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- 7.
What makes a plant cell green?
- A.
The cell wall
- B.
The vacuoles
- C.
The chlorophyll in the chloroplasts
- D.
All of these.
Correct Answer
C. The chlorophyll in the chloroplastsExplanation
The correct answer is the chlorophyll in the chloroplasts. Chlorophyll is a pigment found in the chloroplasts of plant cells that is responsible for the green color. It plays a crucial role in photosynthesis, the process by which plants convert sunlight into energy. Chlorophyll absorbs light energy from the sun and uses it to produce glucose and oxygen. This pigment is what gives plants their characteristic green color.Rate this question:
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- 8.
Which accurate describe differences between an animal and a plant cell?
- A.
Animal cells have cell walls, plant cells do not
- B.
Plant cells have cell walls, animal cells do not
- C.
Animal cells have more mitochondrial than plant cells
- D.
Both b and c.
Correct Answer
D. Both b and c.Explanation
The correct answer is both b and c. This means that plant cells have cell walls while animal cells do not, and animal cells have more mitochondria than plant cells. This is accurate because cell walls are a distinguishing feature of plant cells, providing structural support and protection, while animal cells lack this feature. Additionally, mitochondria are responsible for energy production, and animal cells require more energy for their active lifestyles compared to plant cells, hence why they have more mitochondria.Rate this question:
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- 9.
Which type of energy do your cells require so that they can carry out their life processes?
- A.
Radiant
- B.
Mechanical
- C.
Electrical
- D.
Chemical
Correct Answer
D. ChemicalExplanation
Cells require chemical energy in order to carry out their life processes. This is because chemical energy is stored in the bonds of molecules, such as glucose, and is released through chemical reactions, such as cellular respiration. This energy is then used to power various cellular activities, such as metabolism, growth, and reproduction. Without chemical energy, cells would not have the necessary fuel to perform these essential functions.Rate this question:
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- 10.
In our snail lab, why did the elodea leaf turn the bromothymol blue to yellow when the leaf was left in the cabinet over night?
- A.
Because the leaf could not use carbon dioxide to photosynthesize
- B.
Because the leaf was producing carbon dioxide during the process of cellular respiration
- C.
Both a and b
- D.
Neither a nor b.
Correct Answer
C. Both a and bExplanation
The elodea leaf turned the bromothymol blue to yellow because it could not use carbon dioxide to photosynthesize. Additionally, the leaf was producing carbon dioxide during the process of cellular respiration. Both of these factors contributed to the change in color of the bromothymol blue.Rate this question:
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- 11.
What do we call the different parts within a cell that have specific functions?
- A.
Organs
- B.
Organelles
- C.
Vaculoles
- D.
Cellulets
Correct Answer
B. OrganellesExplanation
Organelles are the different parts within a cell that have specific functions. They are like the organs of a cell, performing specific tasks to ensure the cell's survival and proper functioning. These organelles include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and many others. Each organelle has a specific role in carrying out various cellular processes, such as DNA replication, protein synthesis, energy production, and waste removal. Therefore, organelles are the correct term to describe these specialized structures within a cell.Rate this question:
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- 12.
What are mitochondria?
- A.
The “power houses” of the cell.
- B.
The organelles where chemical energy in the form of sugar is converted to energy in a form that a cell can use to carry out its life processes
- C.
Organelles where photosynthesis takes place
- D.
All of these
- E.
Both a and b
- F.
None of these
Correct Answer
E. Both a and bExplanation
Mitochondria are organelles within cells that are often referred to as the "power houses" of the cell. This is because they are responsible for converting chemical energy in the form of sugar into a usable form of energy for the cell to carry out its life processes. Therefore, the answer "both a and b" is correct as it encompasses both the statement that mitochondria are the "power houses" of the cell and that they convert chemical energy into a usable form.Rate this question:
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- 13.
What are the six characteristics of all living things? (check all that apply! Hint: How many do you think you should check?? :)
- A.
Organized with the cell being the basic unit
- B.
Contain similar chemicals
- C.
Are multicellular
- D.
Are unicellular
- E.
Reproduce
- F.
Make their own food
- G.
Respond to their surroundings
- H.
Grow and develop
- I.
Use energy to power chemical processes to carry on life functions
Correct Answer(s)
A. Organized with the cell being the basic unit
B. Contain similar chemicals
E. Reproduce
G. Respond to their surroundings
H. Grow and develop
I. Use energy to power chemical processes to carry on life functionsExplanation
Living things are characterized by being organized with the cell being the basic unit, containing similar chemicals, reproducing, responding to their surroundings, growing and developing, and using energy to power chemical processes to carry on life functions. These characteristics are essential for defining something as a living organism. Being organized with cells allows for the structure and function of living organisms. Similar chemicals are necessary for carrying out biological processes. Reproduction ensures the continuation of the species. Responding to surroundings allows organisms to adapt and survive. Growth and development are essential for organisms to reach their full potential. Lastly, using energy to power chemical processes is necessary for carrying out life functions.Rate this question:
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- 14.
What is the area visible when looking through the microscope?
- A.
Objective space
- B.
Field of vision
- C.
Working distance
- D.
Magnification
Correct Answer
B. Field of visionExplanation
The area visible when looking through a microscope is referred to as the field of vision. This term describes the extent of the specimen or sample that can be seen at a given time. It represents the area that is in focus and can be observed and studied under the microscope. The field of vision can vary depending on the magnification power of the microscope and the size of the objective lens.Rate this question:
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- 15.
Which organelle is the place where sugar molecules are broken down to create energy in a form that cells can use for its life processes?
- A.
Nucleus
- B.
Mitochondria
- C.
Lysosomes
- D.
None of the above
Correct Answer
B. MitochondriaExplanation
Mitochondria are the organelles responsible for breaking down sugar molecules to create energy in a form that cells can use for their life processes. They are often referred to as the "powerhouses" of the cell because they produce the majority of the cell's energy through a process called cellular respiration. This process involves the breakdown of glucose, a sugar molecule, to produce ATP (adenosine triphosphate), which is the main energy currency of the cell. Therefore, the correct answer is mitochondria.Rate this question:
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- 16.
What does QFS stand for?
- A.
Quadratic formula solution
- B.
Question for further study
- C.
Questions falsely studied
- D.
Questions friends study
Correct Answer
B. Question for further studyExplanation
QFS stands for "question for further study". This acronym is commonly used to indicate that a particular question requires more research or investigation. It implies that the question is not fully answered or understood and requires additional study or analysis to gain a deeper understanding.Rate this question:
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- 17.
Osmosis refers to the net movement of _____ across a selectively permeable membrane.
- A.
Sugar
- B.
Water
- C.
Carbon dioxide
- D.
Both a and b
Correct Answer
B. WaterExplanation
Osmosis refers to the net movement of water across a selectively permeable membrane. This process occurs when water molecules move from an area of higher water concentration (lower solute concentration) to an area of lower water concentration (higher solute concentration) in order to balance the concentration on both sides of the membrane. Therefore, the correct answer is water.Rate this question:
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- 18.
What do we mean when we say that a cell has a semi permeable membrane?
- A.
That the membrane surrounding the cell does not allow materials to pass through it without the expenditure of energy
- B.
That only certain substances are allowed to pass through without the expenditure of energy
- C.
That the cell is protected by a cell wall
- D.
All of these
Correct Answer
B. That only certain substances are allowed to pass through without the expenditure of energyExplanation
A cell with a semi-permeable membrane means that only certain substances are allowed to pass through without the expenditure of energy. This type of membrane selectively allows the passage of specific molecules or ions while restricting others. It acts as a barrier, regulating the movement of substances into and out of the cell. This allows the cell to maintain a controlled internal environment and ensure that essential substances are able to enter while harmful or unnecessary substances are kept out.Rate this question:
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- 19.
What is the space between the objective lens and the slide called?
- A.
Field of vision
- B.
Magnification area
- C.
Lens space
- D.
Working distance
Correct Answer
D. Working distanceExplanation
The space between the objective lens and the slide is called the working distance. This refers to the distance between the objective lens and the specimen being observed. It is an important factor in microscopy as it affects the focus and clarity of the image. A longer working distance allows for a larger specimen to be observed, while a shorter working distance provides higher magnification but a smaller field of view. Therefore, the correct answer is working distance.Rate this question:
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- 20.
The process by which your body uses energy to power chemical processes is called
- A.
Digestion
- B.
Osmosis
- C.
Metabolism
- D.
Diffusion
Correct Answer
C. MetabolismExplanation
Metabolism refers to the process by which the body converts food and drinks into energy. It involves various chemical reactions that occur in cells to break down nutrients and produce energy. This energy is essential for the functioning of the body's organs and systems. Digestion, osmosis, and diffusion are not specifically related to the body's energy production processes, making metabolism the correct answer.Rate this question:
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- 21.
What are the building materials of cells?
- A.
Water and glucose
- B.
Carbohydrates
- C.
Proteins and lipids
- D.
Genetic material
Correct Answer
C. Proteins and lipidsExplanation
The building materials of cells are proteins and lipids. Proteins are essential for cell structure, as they form the framework and provide support. They also play a crucial role in cell functions such as enzyme activity and cell signaling. Lipids, on the other hand, are important components of cell membranes, providing a barrier that separates the cell from its surroundings. They also serve as energy storage molecules and play a role in cell communication. Water and glucose are important for cell function, but they are not the primary building materials of cells. Genetic material, while important for cell function, does not directly contribute to the physical structure of cells.Rate this question:
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- 22.
Which organelle does a plant use to store food?
- A.
Chloroplast
- B.
Lipid
- C.
Nucleus
- D.
Vacuole
Correct Answer
D. VacuoleExplanation
Plants use vacuoles to store food. Vacuoles are membrane-bound organelles found in plant cells that store various substances, including food molecules such as sugars and amino acids. They can also store water, ions, and waste products. Vacuoles play a crucial role in maintaining the plant's structure and regulating its internal environment. Additionally, they can also store pigments, toxins, and defense compounds, contributing to the plant's defense mechanisms against pathogens and herbivores.Rate this question:
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- 23.
What hold the objectives on a microscope?
- A.
Arm
- B.
Diaphragm
- C.
Body tube
- D.
Revolving nosepiece
Correct Answer
D. Revolving nosepieceExplanation
The revolving nosepiece holds the objectives on a microscope. It is a rotating mechanism that allows for easy switching between different magnification lenses. By rotating the nosepiece, different objectives can be brought into position above the specimen, allowing for different levels of magnification to be achieved.Rate this question:
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- 24.
What do we call the material inside a cell membrane and outside of the nucleus that contains all of the other organelles in the cell?
- A.
Nuclear area
- B.
Cytoplasm
- C.
Cellular cavity
- D.
Vacuole
Correct Answer
B. CytoplasmExplanation
Cytoplasm is the material inside a cell membrane and outside of the nucleus that contains all of the other organelles in the cell. It is a gel-like substance that fills the cell and provides a medium for the organelles to carry out their functions. The cytoplasm also serves as a site for many cellular processes, such as protein synthesis and metabolism.Rate this question:
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- 25.
Which of the following are part of the cell theory? (Check all that apply!)
- A.
Cells are the basic unit of structure and function in living things.
- B.
Tissues are made up of cells.
- C.
All living things are made up of cells
- D.
Both plants and animals are living things.
- E.
All cells come from pre-existing cells
- F.
Organisms are created through spontaneous generation
Correct Answer(s)
A. Cells are the basic unit of structure and function in living things.
C. All living things are made up of cells
E. All cells come from pre-existing cellsExplanation
The cell theory states that cells are the basic unit of structure and function in living things, all living things are made up of cells, and all cells come from pre-existing cells. This means that the correct answers are: Cells are the basic unit of structure and function in living things, All living things are made up of cells, and All cells come from pre-existing cells.Rate this question:
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- 26.
What causes diffusion?
- A.
The mitochondria of cells
- B.
Random motion of molecules
- C.
Spontaneous generation
- D.
Semi-permeable membranes
Correct Answer
B. Random motion of moleculesExplanation
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. This movement occurs due to the random motion of molecules. As molecules constantly move and collide with each other, they spread out and mix with other molecules, resulting in diffusion. The other options, such as the mitochondria of cells, spontaneous generation, and semi-permeable membranes, are not directly related to the process of diffusion.Rate this question:
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- 27.
Where is the net movement of molecules during diffusion?
- A.
From areas of high concentration to areas of lower concentration
- B.
Down a concentration gradient
- C.
Both a and b
- D.
Neither a nor b
Correct Answer
C. Both a and bExplanation
During diffusion, molecules move from areas of high concentration to areas of lower concentration. This movement occurs down a concentration gradient, which means that the molecules move from areas of higher concentration to areas of lower concentration. Therefore, the correct answer is both a and b, as the net movement of molecules during diffusion is from areas of high concentration to areas of lower concentration and down a concentration gradient.Rate this question:
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- 28.
Besides a title, when writing a conclusion for an experiment, what 5 components should be part of your conclusion/discussion paragraph? (Check all that apply! Need I tell you how many checks you should have ???? :)
- A.
Complete sentences
- B.
Restate all of the background information
- C.
If....then.....format
- D.
Restate the purpose
- E.
Describe what you found out (the answer to your scientific question)
- F.
Include a QFS
- G.
Support yourself with specific data
- H.
Use proper terminology/vocabulary
Correct Answer(s)
A. Complete sentences
D. Restate the purpose
E. Describe what you found out (the answer to your scientific question)
G. Support yourself with specific data
H. Use proper terminology/vocabularyExplanation
In a conclusion for an experiment, five components should be included: complete sentences, restating the purpose, describing what was found out (the answer to the scientific question), supporting the findings with specific data, and using proper terminology/vocabulary. These components help to summarize the experiment, highlight the key findings, and provide evidence to support the conclusions drawn.Rate this question:
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- 29.
What is the difference between growth and development?
- A.
Growth includes all the changes during an organism's life cycle, while development describes what happens to an organism before it is born
- B.
Growth is the process of becoming larger, while development describes getting older
- C.
Growth is the process of becoming larger, while development describes the physical changes that occur in an organism during its life cycle.
- D.
None of these
Correct Answer
C. Growth is the process of becoming larger, while development describes the physical changes that occur in an organism during its life cycle.Explanation
Growth refers to the increase in size or mass of an organism, while development encompasses the overall changes that occur in an organism throughout its life cycle, including physical, cognitive, emotional, and social changes. Therefore, the correct answer accurately distinguishes between growth and development by stating that growth is specifically about becoming larger, while development encompasses the physical changes that occur during an organism's life cycle.Rate this question:
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- 30.
Which of the following is NOT a part of the 6 characteristics of all living things?
- A.
Respond to their surroundings
- B.
Reproduce
- C.
Breathe oxygen
- D.
Grow and develop
Correct Answer
C. Breathe oxygenExplanation
The correct answer is "breathe oxygen" because not all living things require oxygen for respiration. Some organisms, such as anaerobic bacteria, can survive and carry out their metabolic processes without the presence of oxygen. Therefore, breathing oxygen is not a universal characteristic of all living things.Rate this question:
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- 31.
Which organelle(s) is responsible for protein synthesis?
- A.
Endoplasmic reticulum
- B.
Ribosomes
- C.
Chloroplasts
- D.
None of these
Correct Answer
B. RibosomesExplanation
Ribosomes are responsible for protein synthesis. They are small, spherical organelles found in the cytoplasm of cells. They are composed of RNA and proteins and are the site where proteins are synthesized. Ribosomes read the genetic information stored in the form of messenger RNA (mRNA) and use it to assemble amino acids into a polypeptide chain, which then folds into a functional protein. The endoplasmic reticulum and chloroplasts are not directly involved in protein synthesis, making ribosomes the correct answer.Rate this question:
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- 32.
Which is the correct order of cellular organization from smallest to largest?
- A.
Cells, organ, organism, organ systems, tissue
- B.
Cells, tissue, organ, organ system, organism
- C.
Cells, organism, organ, organ systems, tissue
- D.
None of these
Correct Answer
B. Cells, tissue, organ, organ system, organismExplanation
The correct order of cellular organization from smallest to largest is cells, tissue, organ, organ system, organism. This is because cells are the basic building blocks of life, and they come together to form tissues. Tissues then combine to form organs, which work together in organ systems to perform specific functions in the body. Finally, all of these components make up an organism, which is a complete living being.Rate this question:
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- 33.
Heat is
- A.
Themal energy created by the motion of molecules
- B.
A measure of the kinetic motion of molecules
- C.
Both a and b
- D.
Neither a nor b
Correct Answer
C. Both a and bExplanation
Heat is a form of thermal energy that is created by the motion of molecules. It is a measure of the kinetic motion of molecules. This means that when molecules move and collide with each other, they generate thermal energy, which we perceive as heat. Therefore, both options a and b are correct as they accurately describe the nature of heat.Rate this question:
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- 34.
Which is in the order of warmest to coolest?
- A.
Solid, liquid, gas
- B.
Liquid, solid, gas
- C.
Gas, solid, liquid
- D.
Gas, liquid, solid
Correct Answer
D. Gas, liquid, solidExplanation
The order of warmest to coolest is determined by the energy of the particles. In a gas, the particles have the most energy and are moving rapidly, resulting in a higher temperature. In a liquid, the particles have less energy and move more slowly, leading to a lower temperature. In a solid, the particles have the least energy and are tightly packed, resulting in the lowest temperature. Therefore, the correct order is gas, liquid, solid.Rate this question:
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- 35.
What is the function of the nucleus of a cell?
- A.
Control center of the cell
- B.
Place where cellular respiration takes place
- C.
Place where chemical energy is burned
- D.
All of the above.
Correct Answer
A. Control center of the cellExplanation
The nucleus of a cell is the control center of the cell. It contains the cell's genetic material, DNA, which regulates the cell's activities and controls the production of proteins. The nucleus also plays a role in cell division, as it is responsible for the replication and distribution of DNA during the cell cycle. Therefore, the correct answer is "control center of the cell."Rate this question:
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