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Questions and Answers
What is the primary function of chloroplasts in plant cells?
What is the primary function of chloroplasts in plant cells?
- Provide structural support
- Transport nutrients
- Absorb sunlight (correct)
- Store water
Which process is responsible for creating reproductive cells with half the genetic material?
Which process is responsible for creating reproductive cells with half the genetic material?
- Binary fission
- Fertilization
- Mitosis
- Meiosis (correct)
What term describes the belief that all living things are composed of cells?
What term describes the belief that all living things are composed of cells?
- Cellular composition theory
- Cell theory (correct)
- Biosynthesis theory
- Protoplasm theory
What structure is found only in plant cells and provides protection?
What structure is found only in plant cells and provides protection?
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Which process is used for growth and repair of cells through division, resulting in identical cells?
Which process is used for growth and repair of cells through division, resulting in identical cells?
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Study Notes
Cell Theory and Characteristics
- All cells originate from pre-existing cells.
- Cells are crucial as they perform all functions necessary for life.
- Every living organism is composed of cells.
Scientific Instrument
- The microscope has been instrumental in the development of cell theory.
Plant Cells vs. Animal Cells
- Unique structures in plant cells:
- Chloroplasts: Organelles that absorb sunlight to convert it into energy through photosynthesis.
- Cell Wall: A protective outer layer that provides structure and support to the plant cell.
Photosynthesis
- Plant cells possess the ability to create their own food, a process that animal cells cannot perform.
Cell Division Processes
-
Meiosis:
- Responsible for producing reproductive (sex) cells.
- The process results in four haploid cells, each containing half the genetic material of the parent cell.
-
Mitosis:
- Facilitates growth and repair by generating new cells.
- Results in two identical daughter cells, maintaining the genetic material of the parent cell.
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