Science 1 7th Grade Cells
Hard as crap. Do not know. Haha
Questions and Answers
- 1.
What is the result of mitiosis and cytokinesis?
- A.
Chloroplast
- B.
Two identical cells
- C.
Two different cells
- D.
Two nuclei
Correct Answer
B. Two identical cellsExplanation
Mitosis is a process of cell division where a single cell divides into two identical daughter cells. Cytokinesis, on the other hand, is the division of the cytoplasm that follows mitosis, resulting in the separation of the two daughter cells. Therefore, the correct answer is "Two identical cells" because mitosis and cytokinesis together lead to the formation of two identical daughter cells.Rate this question:
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- 2.
Plants use to make glucose.
Correct Answer
PhotosynthesisExplanation
Plants use photosynthesis to make glucose. Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. During photosynthesis, plants use the energy from sunlight to convert carbon dioxide and water into glucose, which is a form of sugar that plants use for energy. This process takes place in the chloroplasts of plant cells, where chlorophyll absorbs sunlight and initiates the chemical reactions necessary for photosynthesis to occur. Therefore, photosynthesis is the correct answer to the question.Rate this question:
- 3.
The process in which particles move through a membrane from a region of low concentration to a region of high concentration is..
- A.
Active transport
- B.
Passive Transport
- C.
Fermentation
- D.
Diffusion
Correct Answer
D. DiffusionExplanation
Diffusion is the process in which particles move from an area of low concentration to an area of high concentration. This movement occurs due to the random motion of particles and does not require any energy input. In active transport, particles move against their concentration gradient, requiring energy. Passive transport refers to the movement of particles along their concentration gradient without the need for energy. Fermentation is a metabolic process that converts sugars into acids, gases, or alcohol.Rate this question:
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- 4.
Which of the following cells would form a cell plate during the cell cycle?
- A.
A prokaryotic cell
- B.
A plant cell
- C.
A human cell
- D.
All of the above
Correct Answer
B. A plant cellExplanation
During the cell cycle, a cell plate is formed in plant cells. This is because plant cells undergo cytokinesis, the process of cell division, through the formation of a cell plate. The cell plate is formed by the fusion of vesicles containing cell wall materials, which eventually develops into a new cell wall that separates the two daughter cells. In contrast, prokaryotic cells do not have a cell plate, and human cells undergo cytokinesis through the formation of a cleavage furrow. Therefore, the correct answer is a plant cell.Rate this question:
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- 5.
Before the energy in food can be used by a cell, the energy must first be transferred to molecules of..
- A.
Proteins
- B.
DNA
- C.
ATP
- D.
Carbohydrates
Correct Answer
C. ATPExplanation
ATP (adenosine triphosphate) is the correct answer because it is the molecule responsible for transferring energy within cells. When food is broken down during digestion, the energy is released and used to produce ATP through a process called cellular respiration. ATP then carries this energy to various cellular processes where it is needed, such as muscle contraction, active transport, and synthesis of molecules. Therefore, before the energy in food can be utilized by a cell, it must be transferred to molecules of ATP.Rate this question:
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- 6.
During , oxygen is used to break down food molecules releasing large amounts of energy..
Correct Answer
Cellualr respritionExplanation
During cellular respiration, oxygen is used to break down food molecules releasing large amounts of energy. This process occurs in the mitochondria of cells and is essential for the production of ATP, the main energy currency of the cell. Through a series of chemical reactions, glucose and other organic molecules are oxidized, releasing carbon dioxide and water as byproducts. This process is necessary for the survival and functioning of all living organisms.Rate this question:
- 7.
Explain the difference.. Cytokinesis and Mitosis
- 8.
Explain the difference... Active transport and Passive transport
- 9.
Explain the difference.. Cellular respiration and fermentation
- 10.
What is the primary source of energy for all organisms?
- A.
Carbohydrates
- B.
Glucose
- C.
ATP
- D.
Sunlight
Correct Answer
D. SunlightExplanation
Sunlight is the primary source of energy for all organisms because it is used in the process of photosynthesis, which converts sunlight into chemical energy in the form of glucose. This glucose is then broken down through cellular respiration to produce ATP, the main energy currency of cells. Carbohydrates and glucose are derived from the energy stored in sunlight, making sunlight the ultimate source of energy for all organisms.Rate this question:
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