Answer:
Tasters” report that the strip tastes very bitter, while “nontasters” may only detect a small amount of bitterness, if at all. The ability to taste PTC is due changes in the TAS2R38 gene that affects the function of bitter taste receptors on the tongue.
The version of the gene that allows tasting of PTC is masked if it is paired with the version of the gene that does not allow tasting. Traits could come from either parents. A person will only get a bitter taste from PTC if they inherit a copy of the gene for tasting PTC from both of their parents. Some people will have different genotype. so some people may have it Therefore in a family tree , only the grandfather and the youngest daughter can taste PTC.
Explanation:
The question is incomplete as it does not have the options which are:
A. the movement of swallowed food into the trachea rather than into the esophagus
B. Too rapid emptying from the stomach into the small intestine
C. too rapid emptying of the small intestine into the large intestine
D. regurgitation of acidic stomach contents into the esophagus, commonly called "heartburn"
E. the control of defecation
Answer:
Option-D
Explanation:
The oesophagus is a tube-like structure made of smooth muscle which connects the throat of the humans to the stomach.
At the lower side of the oesophagus, a sphincter is formed by the circular shaped muscle which when constricted does not allow the backflow of the substances from the stomach to the oesophagus.
If the sphincter in the esophagus fails to close, then the acidic content present in the stomach along with the food will flow back to the oesophagus and since the esophagus wall is not prepared for the acidic nature therefore the acidic content will cause the irritation and inflammation in the esophagus, a condition called heartburn.
Thus, Option-D is correct.
If the sympathetic nervous system is in a state of constant of anticipation, being conscious manages to maintain the correct balance between the sympathetic and parasympathetic systems by growing the latter's operation. That provides a sense of relaxation and peace.
When arousing the sympathetic, it brings us on high alert, also named the fight-or-flight reaction. For our existence, the sympathetic nervous system is important in helping us to react appropriately when there is a danger. These two mechanisms work with coordination as the other becomes less active as one will respond more active. Yet it can get them out of control.
Answer:
the warbler most likely eats B- insects and nectar
Answer:
organisms that have a nucleus
Explanation:
eukaryotes have nucleus.
