The discovery of BRCA1 and BRCA2
genes led to a new understanding of how genetic mutations increase the risk of
cancer is. Mutations in the genes BRCA1 (breast
cancer gene 1)
and BRCA2 (breast cancer gene 2) increase a woman's risk of developing breast
or ovarian cancer. BRCA mutations account for about 5% of all breast
cancers and 4%–11% of all ovarian cancers.
The correct answer between all
the choices given is the second choice or letter B.
Answer:
Option-D
Explanation:
The small intestine is the part of the digestive system which is very long in its length but small in diameter. The small intestine begins after the stomach and the main parts of the intestine are duodenum, jejunum and ileum.
The small intestine is the main site for the digestion of chyme and absorption of the nutrients from the digested material. The food enters into the small intestine from the stomach in which the digestion of proteins begins.
In the stomach, the enzyme pepsin acts on the peptide bonds of the protein and break it down into the smaller proteins. Therefore, the food that enters the small intestine has already been broken down into smaller proteins.
Thus, Option-D is correct.
She picks up protein powder so she can make a protein shake-This represents ribosome, organelle specified for the biological protein synthesis (translation). In this case protein powder represents amino acids, structural units for the protein synthesis.
She eats part of it, and then stores the rest of it in a paper bag so she can eat it later. Paper bag in this case represents vacuole, organelle that contains molecules that have been engulfed.
Later in the day, she puts together several small packages of candies as gifts for her nieces and nephews. She labels each package and sends it through the mail
. This represents the function of the Golgi apparatus, the eukaryotic organelle that packages proteins into vesicles inside the cell before the vesicles are sent to their destination via certain patway.
