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Questions and Answers
Which subatomic particle has a positive electrical charge?
Which subatomic particle has a positive electrical charge?
What is the atomic number of an atom?
What is the atomic number of an atom?
What are isotopes?
What are isotopes?
What is the average mass of an element's atoms called?
What is the average mass of an element's atoms called?
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What are ions?
What are ions?
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What type of bond is created by the electrical attraction between anions and cations?
What type of bond is created by the electrical attraction between anions and cations?
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What type of covalent bond is formed when electrons are shared equally between atoms?
What type of covalent bond is formed when electrons are shared equally between atoms?
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Which of the following is an example of a positive feedback loop in the context of homeostasis?
Which of the following is an example of a positive feedback loop in the context of homeostasis?
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Which type of bond involves the sharing of electrons?
Which type of bond involves the sharing of electrons?
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Which of the following is an example of an organelle involved in protein synthesis?
Which of the following is an example of an organelle involved in protein synthesis?
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Which of the following is an example of a transport process that does not require energy?
Which of the following is an example of a transport process that does not require energy?
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Which of the following is an example of a hypertonic solution?
Which of the following is an example of a hypertonic solution?
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Which of the following is an example of an anatomical landmark?
Which of the following is an example of an anatomical landmark?
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What is the main function of the plasma membrane?
What is the main function of the plasma membrane?
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Which one of the following is NOT a common function of all living things?
Which one of the following is NOT a common function of all living things?
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What is the definition of homeostasis?
What is the definition of homeostasis?
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Which form of homeostatic regulation corrects variations back to normal range?
Which form of homeostatic regulation corrects variations back to normal range?
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What is the sum of all chemical operations occurring in the body called?
What is the sum of all chemical operations occurring in the body called?
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Which type of movement refers to transporting materials within the body?
Which type of movement refers to transporting materials within the body?
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What are the anatomical concepts that include anatomical regions, directions, planes, and body cavities of the trunk called?
What are the anatomical concepts that include anatomical regions, directions, planes, and body cavities of the trunk called?
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Which type of feedback reinforces or exaggerates the original stimulus?
Which type of feedback reinforces or exaggerates the original stimulus?
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Which organelle is responsible for protein synthesis in the cell?
Which organelle is responsible for protein synthesis in the cell?
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What is the function of microvilli in cells?
What is the function of microvilli in cells?
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Which transport process is driven by solute concentration?
Which transport process is driven by solute concentration?
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What is the control center of the cell?
What is the control center of the cell?
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What is the function of cilia in cells?
What is the function of cilia in cells?
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What is the composition of the plasma membrane?
What is the composition of the plasma membrane?
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Which organelle provides energy for the cell?
Which organelle provides energy for the cell?
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What is the function of the endoplasmic reticulum?
What is the function of the endoplasmic reticulum?
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What is the term for the specialization of cells into different types and the formation of tissues?
What is the term for the specialization of cells into different types and the formation of tissues?
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Study Notes
Cell Structure and Tissues
- Enzymes catalyze reactions in cells, with substrates binding to the enzyme's active site.
- The plasma membrane is extremely thin (6nm - 10nm) and composed of lipids, proteins, and carbohydrates.
- Transport processes include diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.
- Osmotic flow is determined by the solute concentration, with isotonic, hypotonic, and hypertonic solutions affecting the cell's shape.
- The nucleus is the control center of the cell and is surrounded by a double membrane called the nuclear envelope.
- Microvilli are small projections of the plasma membrane that increase the surface area of cells.
- Cilia are long extensions of the plasma membrane that can be motile or nonmotile, used for movement and sensing signals.
- Ribosomes are responsible for protein synthesis and can be free or attached to the endoplasmic reticulum.
- The endoplasmic reticulum is a network of intracellular membranes with functions such as synthesis, storage, transport, and detoxification.
- Mitochondria provide energy for the cell through energy-producing reactions.
- Tumors can be benign or malignant, with the latter spreading through invasion and metastasis.
- Cellular differentiation occurs when specific genes are turned off, leading to the specialization of cells into different types and the formation of tissues.
- Epithelial tissue covers external surfaces, connective tissue provides support, mucous and serous membranes line passageways and cavities, synovial membranes protect joints, muscle tissue allows for contraction, and nervous tissue transmits electrical impulses.
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Description
Test your knowledge on cell structure and tissues with this quiz. Learn about enzymes, plasma membrane, transport processes, nucleus, microvilli, cilia, ribosomes, endoplasmic reticulum, mitochondria, tumors, cellular differentiation, and different types of tissues.
