Walking alone late one night, you are startled by a moving shadow that you glimpse out of the corner of your eye. The _ division of the autonomic nervous system is activated. When you realize it is just the neighbor’s pet, the _ division lessens your physiological arousal.

Answers

Answer 1

Answer:

Answer:

Walking alone late one night, you are startled by a moving shadow that you glimpse out of the corner of your eye. The sympathetic division of the autonomic nervous system is activated. When you realize it is just the neighbor’s pet, the parasympathetic division lessens your physiological arousal.

Answer 2

Answer:

Final answer:

The sympathetic division of the autonomic nervous system activates when you're startled, initiating the 'fight or flight' response. Once the danger has passed, the parasympathetic division lessens physiological arousal, returning the body to a restful state.

Explanation:

The autonomic nervous system (ANS) is a part of the peripheral nervous system that acts primarily unconsciously and regulates bodily functions. When you were startled by a moving shadow, the sympathetic division of the ANS was activated, stimulating your 'fight or flight' response and increasing your heart rate, dilating the pupils, and halting digestion. Then, after realizing it was just the neighbor's pet, the parasympathetic division stepped in, reducing your physiological arousal by slowing your heart rate, constricting your pupils, and resuming digestion, thus restabalizing your body conditions.

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What are the similarities between plant and animal cell?What are the differences between plant and animal cell?

HELP PLEASEEE!! 10 points and BRAINLIEST!! 2. Honey Bees may be headed for extinction.
Why do you think this is happening? (Things
to think about: habitat destruction, erosion,
pollution, invasive species, human impact.)

Answers

Answer:

Well the most common is habittat destruction. With the number of humans only growing, more land is needed and habitat desturctions occur. Lack of food is also a problem, as some crops don’t grow as much so the bee’s food source is smaller which leaves thousands dead. Also if the food source doesn’t run out, there are pesticides sprayed and the bees will die if eaten one which the chemical properties in a pesticide will kill. Also if not used, littering, if you dump it into a water source, the water gets contaminated and the bees could die from that, or the water spreads ano the flower would receive this chemical property, which could kill the Bee’s food source, or the flower doesn’t die but when the bees consume it, the bee will die.

Answer:

honey bees Extinction types are parasites ,habitat loss ,and cell phones. but there two main types of parasites that are harming the honeybees are Vero mites and tracheal

Which part of the cell contains the genetic instructions and information

Answers

Nucleus.... more specifically DNA and RNA

A genetics researcher finds that a form of human albinism in a certain population is controlled by the recessive allele, a, for the absence of skin pigment and the completely dominant allele, A, for presence of skin pigment. If the recessive allele occurs in 30% of this population, what percent of the population has skin pigment but also carries the recessive allele?21 percent
42 percent
91 percent
51 percent

Answers

Answer:

Option A

Percent of the population that has skin pigment but also carries the recessive allele is $21\n$ percent

Explanation:

As per hardy-weinberg equation,

$p^2+q^2+2pq = 1\n$ ------------- Eq(A)

where

$p^2= \n$ frequency of the homozygous genotype (dominant)

$q^2= \n$ frequency of the homozygous genotype (recessive)

$pq= \n$ frequency of the heterozygous genotype (recessive)

Also, sum of the allele frequencies at the locus is equal to one.

Thus, $p + q = 1\n$ ------------- Eq(B)

Here frequency of recessive allele i.e $q = 30\n$ %

Substituting this in equation B, we get

$p + 0.3 = 1\np = 1-0.3\np= 0.7\n$

frequency of dominant allele i.e $q = 70\n$ %

Substituting the value of frequency of both dominant and recessive allele in equation A, we get

$(0.3^2) + (0.7^2) + 2pq = 1\npq = (1-0.3^2-0.7^2)/(2) \npq = (0.42)/(2) \npq = 0.21\n$

Thus, percent of the population that has skin pigment but also carries the recessive allele is $21\n$ percent

The correct answer will be 42%

The acidification of the stomach juices is important for the digestion of proteins because: Group of answer choices Proteins are basic, and need to be neutralized.

Answers

Answer:

See the answer below

Explanation:

The acidification of stomach juices is important for the digestion of proteins partly because the enzyme responsible for protein digestion work in an acidic medium and the acid also facilitates the unfolding of the proteins.

Hydrochloric acid and the enzyme responsible for the initiation of protein digestion, pepsin is secreted as gastric juice by the stomach, and the latter works by breaking down protein chains into smaller fragments.

If the midwest experiences a severe drought that damages the corn crops, we should expect the

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If the Midwest experiences a severe drought that damages the corn crops, we should expect the supply of corn to decrease and the price of corn to rise.

Severe drought is a long period of abnormally low rainfall and dry weather, in a specific region, which negatively affects plants and living organisms. Severe droughts can have a considerable effect on the agriculture and ecosystem of the affected region. Severe drought damages crops, thus it influences crop production.

what is viscosity and what effect does heat have on the viscosity of DNA? What is the underlying cause of the change?

Answers

Answer:

Please find the definition of viscosity, effect of heat on DNA explanation to this question below

Explanation:

Viscosity is a term used to describe FLUIDS, which includes liquids and gases. Viscosity refers to the ability of a gas or liquid to resist flow. In other words, it is the measure of the internal friction that exists between the molecules of a fluid, which resists its flow.

DNA in its natural state exists in a liquid solution, hence, when HEAT is applied, the heat causes ITS MOLECULES to MOVE RELATIVELY FAST and as a result the molecules lose the friction between them and begin to flow. Based on this, heat is said to make DNA LESS VISCOUS i.e. to flow more rapidly.

Final answer:

Viscosity refers to the 'thickness' or 'stickiness' of a fluid. Heat decreases the viscosity of DNA by providing energy to the molecules, which reduces the 'stickiness' between them. The underlying cause is changes in the interactions between the DNA molecules due to the heat energy overcoming the forces holding them together.

Explanation:

Viscosity is a property of a fluid that resists the force tending to cause the fluid to flow. In simple terms, it is the 'thickness' or 'stickiness' of a fluid. The greater the viscosity, the slower the fluid flows.

When exposed to heat, the viscosity of DNA decreases - it 'thins' and flows more easily. This happens because heat provides energy to the DNA molecules, increasing their movement and reducing the 'stickiness' between them.

The underlying cause of the change in viscosity due to heat is actually due to a change in the interactions between the DNA molecules. The added heat energy overcomes the forces holding the molecules close together, allowing them to move more freely relative to each other, thus decreasing the viscosity.