Answer:
(C) Only BamHI and BglII fragments are compatible.
Explanation:
First we can visualize how the enzymes cut by completing the strand below and cutting where indicated. The three enzymes cut with cohesive ends.
Then we can complete the sense of the strands and serach compatible ends. Keep in mind that we can only join 5 'ends with 3' ends.
BamHI = G...3' 5'...GATCC
CCTAG...5' 3'...G
XbaI = T...3' 5'...CTAGA
AGATC...5' 3'...T
BglII = A...3' 5'...GATCT
TCTAG...5' 3'...A
In bold, leave the bases that remain in single strand and must be compatible with those of the other end.
To be compatible they must be complementary bases. A with T and C with G.
Now you can see that only BamHI fragments are compatible with those of BglII.
In the case of the muscular cramps, the muscle contraction starts with the generation of the action potentials from the brain. The action potential causes the release of the calcium ions movement out of the sarcoplasmic reticulum (storage site of calcium). The calcium released in this process causes the contraction of the myofibrils with the help of the ATP molecules. Meanwhile, the calcium is pumped back to the sarcoplasmic reticulum through the fast calcium pumps.
The contraction of one muscle cell generate the action potential in neighboring muscle cells. When the generation of the action potential is stopped, the sarcoplasmic reticulum relaxes as well as the muscle is relaxed. The fast calcium pump is powered by a sodium gradient, and the calcium influx is a result of fast outflux of the sodium ions from the sarcoplasmic reticulum.
In case, the sodium ion is less, the calcium pumps cannot be powered, the calcium ion would remain in myofibril, as a result, the muscle would be contracted for a longer time and this result in cramps. The muscle in this case, would be relaxed by the ATP instead of sodium gradient. So, it can be concluded that the muscle cramps are caused when the muscles are not able to relax properly.
D is the answer hope this helps
Answer:
The more strongly the ORN is activated, the fluorescence decreases.
Explanation:
Olfactory receptors are commonly known as olfactory ordants receptors that are located on the cell membrane of olfactory receptor nerves. They are mainly used for the detection of different types of smell.
Olfactory receptor response is used t measure the functioning of the olfactory receptor. The fluorescence element labelled with calcium used in this type of fluorescence. The activation of ORN can be measured by the fluorescence activity. The decrease in fluorescence is associated with the increase in the activation of ORN.
Thus, the correct answer is option (b).
