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Gennadij [26K]
1 year ago
12

The somatic and autonomic nervous systems differ in all of the following EXCEPT ________. The somatic and autonomic nervous syst

ems differ in all of the following EXCEPT ________. their efferent pathways and ganglia their effectors target organ responses to their neurotransmitters regulation of activity by higher brain centers
Biology
1 answer:
valkas [14]1 year ago
6 0

Answer: Regulation of activity by higher brain centers.

Explanation: The autonomic nervous system is part of the peripheral nervous system and is responsible for involuntary actions that occur without control, such as breathing and heart rate.

The somatic nervous system is also part of the peripheral nervous system but is responsible for the transmission of signals to the skeletal muscles and from receptors of external stimuli.

The peripheral nervous system regulates systems such as the nerves and ganglia that are found outside of the brain and spinal cord. Thus the autonomic and somatic nervous systems differ, but both are not involved in the regulation of activity by higher brain centers.

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James was walking down the road when a large animal jumped out in front of him. James was startled and experienced a fast heart
Nataly [62]

Answer: “The adrenal gland secreted epinephrine, increasing blood pressure, which increased the heart rate and breathing.”

<span>Epinephrine is m<span>ore commonly known as adrenaline. It is a hormone secreted by the adrenal glands that are released into the bloodstreams during strong emotions of fear or anger. It caused an increase in heart rate and heavy breathing for James.</span></span>

8 0
2 years ago
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Suppose that Gene B occurs in a sea turtle gene pool where the frequency of the B1 allele is 0.5 and the frequency of the B2 all
disa [49]

Answer:

Frequency of the B3 allele = 0.1

Explanation:

The allele frequencies in a given population remain constant which means that every generation will have the same gene pool across the generations. As per Hardy Weinberg’s first equilibrium equation, the sum of frequency of all the alleles at a given locus is equal to one  

Thus, if "p" represents the frequency of B1 allele and "q" represents the frequency of B2 allele and "r" represents the allele for B3 allele. Then, sum or "p", "q" and "r" is equal to one.

p+q+r = 1\\

Substituting the given values, we get -

0.5 + 0.4 + r = 1\\0.9 + r = 1\\r = 1-0.9\\r = 0.1

5 0
2 years ago
Nonrandom mating tends to _______ the frequencies of ______ genotypes. increase; homozygous decrease; homozygous increase; heter
Solnce55 [7]
<span>The answer depends of the kind of non-randommating. If the non-random mating is the kind of positive assortative mating then it tends to increase the frequencies of homozygous genotypes. Positive assortative mating when individuals mate with other individuals like themselves. If the non-random mating is the kind of negative assortative mating, then the effect is the opposite as of the positive assortative mating, this is it tends to decrease the homozygous genotypes.</span>
8 0
1 year ago
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A hypothesis is a general principle or explanation that is derived from observations. Suppose you make the following observation
mr_godi [17]

Question continued

For each statement below, mark "True" if it would be a valid hypothesis, based on these three observations alone, and mark "False" if it would not be a valid hypothesis.

1. The onion cells I looked at have a nucleus.

2. All onion cells have a nucleus.

3. All cells have a nucleus.

4. Some cells have a nucleus.

5. Only onion cells have a nucleus.

6. If I look at 10 skin cells from my hand, each one will have a nucleus.

Answer:

1. The onion cells I looked at have a nucleus. false - this is not a hypothesis, it is an observation of the evidence you collected.

2. All onion cells have a nucleus. true - this is a valid hypothesis based on the evidence you have gathered from looking at onions

3. All cells have a nucleus. true  - this is a hypothesis based on you looking at 3 cell types, several samples of each, and finding that they all have a nucleus

4. Some cells have a nucleus. false - this is not a valid hypothesis. Your evidence so far suggests all cells have a nucleus

5. Only onion cells have a nucleus. - false, you know this to be false as other cell types you analysed had a nucleus

6. If I look at 10 skin cells from my hand, each one will have a nucleus. false - a hypothesis is supposed to be a general principle that is backed up by evidence, this is too specific.

4 0
2 years ago
A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order
Gekata [30.6K]

Answer:

If a strand of DNA contains the bases adenine, cytosine, cytosine and guanine the order  of the bases on the opposite strand is thymine, guanine, guanine and cytosine.

Explanation:

DNA contains a double strand, each of which contains a specific sequence of bases —adenine, thymine, cytosine and guanine— whose order determines the genetic information stored in this nucleic acid.

The sequence of bases on one DNA strand is complementary on the other strand, taking into account the complementarity of bases, i.e. the purines adenine and guanine are complemented by the pyrimidines thymine and cytosine, respectively:  

A = T

G ≡ C

<u>So that the sequence A - C - C - G of one chain is complemented by the sequence T - G - G - C of the other</u>.

<em>     Taking into account the above information, the other options can be discarded, as they do not comply with the complementarity of bases in the DNA.</em>

7 0
2 years ago
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