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Free Anatomy Quiz

What is a cell?

Test your knowledge of the cell by answering the following questions, and if you don't know the answers then read the text below to find out.

Q1. The fluid within a cell is called the __________.

Q2. Nucleoplasm is the fluid found within the _________.

Q3. _______ synthesise proteins and enzymes.

Q4. DNA is found within the ________.

Q5. DNA stands for _______________ _____.

Q6. The intracellular structures involved in energy production are called ________________.

Q7. The _______ apparatus synthesises carbohydrates and vacuoles.

Q8. The intracellular structures involved in cleaning up cellular debris are called ___________.

What is a cell?

A cell is composed of a selectively permeable plasma membrane filled with cytoplasm, and containing several intracellular structures. The cytoplasm is a watery solution of organic molecules, gasses and minerals, and is the site of chemical reactions within the cell.

The intracellular structures include the :

  • ribosomes - tiny structures of protein and RNA that are the sites of protein and enzyme synthesis,
  • mitochondrion - sites of energy production,
  • lyosomes - containing digestive enzymes that destro cellular debris and bacteria,
  • centrosome - dense areas of cytoplasm containing centrioles,
  • centrioles - involved in cell division,
  • endoplasmic reticulum - which synthesizes secretory proteins, lipids and carbohydrates, and provides a passageway for the transport of materials within the cell,
  • golgi apparatus - which synthesises and transports carbohydrates, and
  • vacuoles - which containing waste material in the cell.

cell biology

The biology of a single eukaryotic cell

Also found within the cytoplasm is the nucleus, which is the control centre of the cell. Filled with nucleoplasm within a selectively porous nuclear membrane, the nucleus contains the deoxyribonucleic acid (DNA) and chromatin, which together form chromosomes during mitosis.

Reference: Clinically Oriented Anatomy, Moore

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