(Latest Update ) Genetics
| Questions & Answers | Grade A |
100% Correct - Portage Learning
Genetics in Human Cancers
Question:
what are mutated genes typically involved in
Answer:
typically involved in structural integrity of the cells, adhesion, or proteolytic
enzymes
Question:
carcinogens
Answer:
any substance capable of causing cancer
,Question:
most cancers are caused by
Answer:
environmental exposures
Question:
natural carcinogens
Answer:
Almost 80% of cancers are caused by natural substances
Question:
example of natural carcinogens
Answer:
- Aflatoxin on corn and peanuts
- Sodium nitrates as a preservative on cured meats can turn into nitrosamines
under the wrong conditions
,Question:
How is the human gut carcinogenic
Answer:
creates carcinogenic alkylating agents during digestion
Question:
metabolism in the gut
Answer:
creates oxidative end products (called free oxygen radicals) that cause up to
10,000 lesions in DNA per day
Question:
hormones and growth factors can be
Answer:
mutagenic
Question:
autoimmune disorders and chronic inflammation
Answer:
produce a constant stimulation of tissue repair and cell division in which
DNA lesions can be more quickly replicated if allowed to progress
, Question:
what are 20% of cancers in the US attributed to
Answer:
poor diet associated with obesity and inactivity
Question:
large amounts of animal proteins
Answer:
correlated to colon, breast, and prostate cancers
Question:
why are fish no longer a big part in cancer prevention
Answer:
lake and ocean pollution that pollutes animals that live in and drink the water
Question:
human made carcinogens
Answer:
air pollution attributed to 15% of lung cancer deaths; 9/10 people breath
unclean air