Exercise 4 Pre- lab quiz-5 pts 1. Define cell 2. When a cell is not dividing. th
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Exercise 4 Pre- lab quiz-5 pts 1. Define cell 2. When a cell is not dividing. the DNA is loosely spread throughout the nucleus in a threadlike form called: A.chromatin C. Cytosol B. Chromosomes D. ribosomes 3. The plasma membrane not only provides a protective boundary for the cell but also determines which substances enter or exit the cell. We call the characteristic: b. membrane potential a. Diffusion c. osmosis d. selective permeability 4. Proteins are assembled on these organelles: 5. Because these organelles are responsible for providing most of the ATP needed b the cell, they are often referred to as the "powerhouse" of the cell. They are a. Centrioles b. lysosomes c. mitochondria d. ribosomes 6. During cytokinesis Linterphase the cell grows and performs it usual activities 7. True False The end product of mitosis is generally four genetically identical daughter or nuclei. 8. How many stages of mitosis are there? 9. DNA replication occurs during a. Cytokinesis b. interphase c. metaphase d. prophase 10. True or False All animal cells have a cell wall. Anatomy of the composite cell. 10 pts 1. Cell have three major regions or parts and can be identified with a 2. The three major regions of a cell are and 3. The nucleus contains 4. Sections of DNA are called 5. The nucleus is necessary for cell 6. Loosely dispersed DNA (genetic material is) in non dividing cells is calil calledExplanation / Answer
1) The cell is the basic structural, functional and biological unit of all living organisms.
2) The correct option is A. Chromatin.
In the nucleus of each cell, DNA is loosely spread in thread like form known as chromatin.
3) The correct option is d. selective permeability.
Selective permeability is a characteristic of plasma membranes, which only allows certain molecules to enter or exit the cell.
4) Proteins are assembled on these organelles ribosomes. The ribosomes are found within all living cells, which acts as the site of protein synthesis.
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