The biochemical difference among the eubacteria and archaebacteria made biologist separate the to two distinct groups. Also considered as the "true bacteria" the eubacteria have simple cells and mostly resides inside our intestines while the archaebacteria have different molecular structure.
Answer:
Mutations happen in our cells all the time. It's actually how all humans grow and change. The vast majority of mutations are harmless. Thus, they aren't avoidable.
Answer:
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
Explanation:
Answer:
Option (B).
Explanation:
The relationship between closely related species can be studied by their evolutionary tree. The two species are closely related if they have similar characteristics and nucleotide sequence.
Species A has the DNA sequence TAGCTTAGGGACGG whereas species B has the DNA sequence TACCTTAGGGACGG. These two species have identical nucleotide sequence with minor differences. Hence, these two species are closely related with each other.
Thus, the correct answer is option (B).
Option A
Target organs regulate the pituitary through feedback loops. Most often, this takes the form of negative feedback inhibition.
<u>Explanation:</u>
Feedback inhibition is a cellular regulatory mechanism in which an enzyme’s action is frustrated by the enzyme’s terminal product. This method enables cells to control how much of an enzyme’s terminal product is created. An outstanding case of a negative feedback loop is detected in the regulator of thyroid hormone secretion.
To manage the discharge of chemical signals in the hypothalamus, pituitary glands Negative Feedback utilized widely. Negative feedback transpires when a product supplies back to reduce its creation. When the output of a way that constitutes restrains inputs to that way is recognized as Negative feedback