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April 19, 2014

Homework Help: science

Posted by Girl on Thursday, January 17, 2013 at 4:31pm.

Gene therapy research uses _______ to alter defective hereditary material. (1 point)
bacteria
cells
interferons
viruses
2. _____ transports materials within a cell and between cells and makes up ______ percent of most organisms. (1 point)
Fat; 60
Protein; 40
Sugar; 75
Water; 50
3. Which of these measures will not help a viral infection? (1 point)
antibiotics
controlling animals that spread disease
improving sanitary conditions
vaccinations
4. Prokaryotic cells are found in (1 point)
plants and some protists.
only one-celled organisms.
animals and fungi.
only fungi.
5. _________, which are not found in plant cells, contain _______ to break down food and cell waste. (1 point)
Chloroplasts; bacteria
Golgi bodies; cellular molecules
Lysosomes; digestive chemicals
Mitochondria; chemicals
6. A virus contains which of these parts? (1 point)
cell membrane
hereditary materials
organs
ribosomes

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