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shtirl [24]
3 years ago
13

Why is negative feedback often associated with maintaining homeostasis

Biology
1 answer:
Ostrovityanka [42]3 years ago
7 0

Answer: Negative feedback serves to reduce an excessive response and to keep a variable within the normal range. Negative feedback loops control body temperature and the blood glucose level.

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Need help with question 6a and 6b
prohojiy [21]
Discontinuous variable ;)
7 0
3 years ago
when a single cell of E. coli reproduces it first duplicates it's dna next the cell elongates as each copy of dna is pulled towa
ipn [44]

Answer:

They are identical

4 0
3 years ago
Barred feather pattern is a Z-linked dominant trait in chickens. What offspring would you expect from (a) the cross of a barred
Bezzdna [24]

Answer:

Let the "barred" allele be caller B and the "non-white" allele b. Since chickens use chromosomes Z  and W to determine sex, hens would have chromosomes ZW, and roosters would have chromosomes ZZ. A Z-linked gene is represented as a superscript on the Z chromosome, Z^{B} for the dominant allele and Z^{b} for the ressesive allele.

A barred hen would have a copy of B on its Z chromosome, a non-barred rooster would have both copies of b on both Z chromosomes. Using Punnet squares to represent the crosses we get the following cases:

\begin{center}\begin{tabular}{ |c|c|c|c| }\ & Z^{B} & W \\ \ Z^{b} & Z^{B}Z^{b} & Z^{b}W \\ \ Z^{b} & Z^{B}Z^{b} & Z^{b}W \\ \end{tabular}\end{center}

That is a ratio of two barred heterozygote roosters to two non-barred hens. Crossing them we get:

\begin{center}\begin{tabular}{ |c|c|c|c| }\ & Z^{b} & W \\ \ Z^{B} & Z^{B}Z^{b} & Z^{B}W \\ \ Z^{b} & Z^{b}Z^{b} & Z^{b}W \\ \end{tabular}\end{center}

That is a ratio of one barred heterozygote rooster to one barred hen to one non-barred rooster to one non barred hen.

6 0
3 years ago
What prevents the full intake of calcium in milk?
katrin [286]

Phosphorous: Also known as phosphoric acid and phosphate, phosphorous, which is in cola and many processed foods, can interfere with calcium absorption.

Insoluble fiber: This type of fiber, such as the kind in wheat bran, reduces calcium absorption

Foods with high levels of oxalic acid include spinach, collard greens, sweet potatoes, rhubarb, and beans and this will interfere with calcium absorption.

3 0
3 years ago
The fibers that connect the two halves of the brain are called the
amm1812

Hello.

The fibers that connect 2 halves of the brains is the Cerebral hemisphere. Cerebral hemispheres that are separated by a groove, the longitudinal fissure. The brain can thus be described as being divided into left and right cerebral hemispheres.

The other half is the cerebrum, is a vital layer of tissue the thickness of a stack of two or three dimes.

Have a nice day


7 0
3 years ago
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