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

1. Gene therapy research uses viruses to alter defective hereditary material.

2. Water transports materials within a cell and between cells and makes up 50 percent of most organisms.
3. Antibiotics will not help a viral infection.
4. Prokaryotic cells are found in only one-celled organisms.
5. Lysosomes, which are not found in plant cells, contain digestive chemicals to break down food and cell waste.
6. A virus contains hereditary materials.

1. To answer the first question, we can eliminate options that are not directly related to altering defective hereditary material. Bacteria and interferons do not play a direct role in altering hereditary material, so we can eliminate those options. The remaining options are cells and viruses. Both cells and viruses can be used in gene therapy research to alter defective hereditary material. However, in the context of gene therapy, viruses are often used as delivery vehicles to introduce healthy DNA into cells, so the correct answer is viruses.

2. The second question has two parts. The first part asks about the substance that transports materials within a cell and between cells. We can eliminate fat, sugar, and water as these substances do not primarily play a role in cellular transport. The remaining option is protein, which is involved in various cellular functions, including transport. So, the correct answer is protein.

The second part of the question asks about the percentage of this substance in most organisms. Based on available general knowledge, protein makes up a significant portion of most organisms, generally around 40% of their composition. Hence, the correct answer is Protein; 40.

3. To answer the third question, we need to consider the measures that do not help with a viral infection. Antibiotics are specifically designed to target and kill bacteria, so they are not effective against viruses. Therefore, we can eliminate antibiotics as a measure that helps with viral infections. Controlling animals that spread disease and improving sanitary conditions can help reduce the spread of viral infections. Vaccinations, on the other hand, can help prevent viral infections by providing immunity against specific viruses. So, the measure that does not help with a viral infection is antibiotics.

4. The fourth question asks where prokaryotic cells are found. Prokaryotic cells lack a nucleus and are typically found in single-celled organisms. Plants and some protists have eukaryotic cells, which contain a nucleus, so we can eliminate that option. Animals and fungi have eukaryotic cells as well, so we can eliminate those options as well. The only remaining option is only one-celled organisms, which refers to unicellular organisms. Therefore, the correct answer is only one-celled organisms.

5. The fifth question asks about structures that are not found in plant cells and contain chemicals to break down food and cell waste. Chloroplasts, found in plant cells, are responsible for photosynthesis and do not break down food or cell waste, so we can eliminate that option. Golgi bodies are involved in modifying and packaging proteins, so they do not directly break down food and cell waste. Hence, we can eliminate that option too. Lysosomes, present in animal cells, contain digestive chemicals that break down food and cellular waste. Therefore, the correct answer is Lysosomes; digestive chemicals.

6. The sixth question asks about the parts that are present in a virus. A virus lacks a cell membrane, which eliminates that option. A virus does contain hereditary materials, typically in the form of DNA or RNA. Organs are complex structures found in multicellular organisms and are not present in viruses. Ribosomes are organelles involved in protein synthesis and are not a part of viruses. Therefore, the correct answer is hereditary materials.