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Answer: option A - tumor-suppressor gene
Explanation:
A cancerous tissue is growing or spreading rapidly at a harmful rate. However, for a tissue to become cancerous, its "internal guard" usually known as a TUMOUR SUPPRESSOR GENE must have lost or reduced its function.
This loss of function occurs after mutation.
So, definitely, all affected individuals with cancerous tissues have mutated tumour suppressor genes unlike unaffected individuals.
Note that other options are WRONG, because none of them accurately distinguishes affected from unaffected individuals
Answer:
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions.
Answer:
Where do they occur: infected blood, semen or vaginal secretions in your body
How do they start: mainly by having s3x
How do they spread: either by s3x or injection drug use
How deadly are they: takes about 10 years for an injection to develop aids so idk a long time I guess? Just say very deadly
Is there a vaccine: not yet but people are working on some
Explanation:
Answer:
False
Explanation:
There are multiple ways in which the food supply can be introduced to pathogens e.g.
1)inadequate handwashing.
2)cross-contamination.
3)storage and cooking temperatures.
4)contamination of food by animal waste
