Podcast
Questions and Answers
What is NOT a component of the cell membrane?
What is NOT a component of the cell membrane?
Which of the following is a function of the nucleus?
Which of the following is a function of the nucleus?
How many pairs of chromosomes are present in human cells?
How many pairs of chromosomes are present in human cells?
What characteristic best describes neuron cells?
What characteristic best describes neuron cells?
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Which component is found inside the cell?
Which component is found inside the cell?
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Study Notes
Cell Membrane Structure
- The outer layer of the cell membrane consists of membrane proteins, glycoprotein, cholesterol, and phospholipid.
- The inner layer of the cell membrane borders the cytoplasm.
The Nucleus
- The nucleus is the control center of the cell, directing all cellular activities.
- The nucleus contains genetic material in the form of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Human Cells
- Human cells have 23 pairs of chromosomes, totaling 46 chromosomes.
- The 23 pairs of chromosomes consist of 22 pairs of somatic chromosomes and 1 pair of sex chromosomes.
Cell Shape and Function
- Cell shape varies according to tissue function.
- Neuron cells are long, allowing them to transmit signals throughout the body.
- Blood cells are small, enabling them to pass through capillaries.
- Fibrous tissue cells are elongated and elastic, allowing them to withstand deforming forces.
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Description
Learn about the structure and components of cells, including the cell membrane, nucleus, and chromosomes. Understand the role of DNA and RNA in cells.
