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emmasim [6.3K]
4 years ago
6

Describe the effects of NE and Ach on contractile force that you observed today. Given your knowledge of sympathetic and parasym

pathetic nervous system anatomy, which neurotransmitter should have resulted in a more dramatic change in contractile force and why?
Biology
1 answer:
Afina-wow [57]4 years ago
3 0

Answer:

The answer is Norepinephrine.

Explanation:

Acetylcholine (Ach) and Norepinephrine (NE) are both chemical substances (neurotransmitters) released primarily by nerve cells and they affect different parts and systems of the body. Acetylcholine mostly targets the muscles and the brain and it is a part of the parasymphatetic nervous system whereas norepinephrine targets the whole body and has an effect that leads to the contraction of muscles and the increase of the heart rate. Norepinephrine is a part of the symphatetic nervous system.

Since the symphatetic nervous system is responsible for the crucial "fight-or-flight" response of our body, it has a more dramatic effect on the muscle contraction. Norepinephrine, being a part of the symphatetic nervous system, should result in a more drastic change in contractile force.

I hope this answer helps.

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Answer:

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- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio

Punnett  square:  

          ch         ch

C       Cch       Cch

ch    chch      chch

 

Explanation:

A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular <em>locus</em>. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given <em>locus</em> (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.

4 0
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a scientist is studying fruit fly wings. straight wings are dominant, curly wings are recessive. which statement correctly descr
klemol [59]

If both parents are true breeding, they have two of the same allele and are homozygous.


Let's use S for the dominant allele and s for the recessive allele. We will end up with the following combinations:


\left[\begin{array}{ccc}&S&S\\s&Ss&Ss\\s&Ss&Ss\end{array}\right]


As you can see from the cross above, all of the offspring will be heterozygous for this allele. Therefore, all of the offspring will display the dominant phenotype (straight-winged).

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