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ioda
2 years ago
6

As a cook chops red onions he begins to tear up due to activation of the lacrimal gland. Which of the following nerves provided

the stimulus?
A) the vagus nerve (X)
B) the optic nerve (II)
C) the facial nerve (VII)
D) the olfactory nerve (I)
Biology
1 answer:
navik [9.2K]2 years ago
4 0

Answer:

C) the facial nerve (VII)

Explanation:

The facial nerve (VII) is a cranial nerve. The cranial nerves are those nerves which arise from the brain. Most of the cranial nerves contain both motor and sensory neurons. Cranial nerves are connect to the various organs. Cranial nerves are associated with parasympathetic nervous system.

The facial nerve supplies nerve to many glands of the head and neck including lacrimal glands.

Thus, the facial nerve (VII) provided the stimulus to the lacrimal gland that cause tear while chopping oninons.

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A fly has two alleles for the color of its eyes. The green allele is recessive, and is represented by q. The blue allele is domi
murzikaleks [220]

Answer:

p = 0.34

Explanation:

The green allele is recessive, meaning two copies of q (qq) are required to be green. Conversely, animals that are either pp or pq will be blue.

If 44 organisms are green, that means 44 are qq.

For genotype frequencies, the equation is:

homozygous dominant genotype + heterozygous + homozygous recessive = 100%

Which is denoted as

p² + 2pq + q² = 1

We know that q² = 44/100 = 0.44

To work out q, we can do \sqrt{0.44} = 0.66

For allele frequencies, the total must add up to 100%, so

p + q =1

We know that q= 0.66

So p = 0.34, because 0.66 + 0.34 = 1

7 0
2 years ago
Visit this website about public health issues. Scroll to the bottom of the page under "What is the impact of Public Health", and
kobusy [5.1K]

Answer:

Part A: Influenza virus

Part B: Influenza is a public health issue because it is one of the leading cause of death all over the world. Proper vaccination against the illness can prevent death and other serious illness due to this virus.

Part C: serious illness and death, mainly among children and elderly

Part D: Efforts are underway to create a cheap and effective vaccine against this virus. The National Vaccine Program Office is responsible for coordinating and ensuring collaboration among federal agencies involved in vaccine and immunization activities.

Part E: A vaccine against this virus will prevent people from facing the effects of this virus. Also, compulsorily vaccinations against this virus will ensure a major reduction in deaths caused by it.

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Imagine you are a red blood cell sitting in the right atria of the heart. Write a paragraph that describes what happens to this
alexandr402 [8]

Answer:

A red blood cell, sitting in the right atria of the heart is chocolate-brown in color since its a deoxygenated red blood cell with carbon dioxide rather than oxygen in its hemoglobin.

 

First

The tricuspid valve pumps it through the right ventricle

Secondly

pulmonary valve pumps it from the right ventricle to the pulmonary circulation.

Then

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The end product is oxyhemoglobin( bright red colour) I.e oxygenated blood

The next step

pulmonary veins is the means whereby the red blood cell go to the left atria from the pulmonary circulation through the aortic valve

to mitral valve then to the aorta and systemic circulation

Therefore

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2 years ago
How do day-neutral and intermediate-day photoperiod plants differ in their requirements?
Anastasy [175]

Answer:

Photoperiod signifies towards the time that an animal or a plant gets exposed to light in a twenty-four-hour duration. Different types of plants need different durations of light exposure to follow their respective life cycles.  

On the basis of getting exposed to light differently, the plants are differentiated into short-day plants, long-day plants, day-neutral plants, and intermediate-day plants. The day-neutral plants will undergo flowering at any length of the day, given that there is the availability of minimum amount of light, which is essential for usual growth. For example, beans, tropical plants, cotton, and others.  

On the other hand, the intermediate-day plants will not flower if the days are too long or too short, like different varieties of grasses.  

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2 years ago
Which of the following is not a possible consequence of surface mining?
aleksklad [387]

Answer;

B. improved ecosystem health

Explanation;

-Surface mining is a method of extracting minerals near the surface of the Earth. The three most common types of surface mining are open-pit mining, strip mining, and quarrying.

-The environmental impact of mining includes erosion, formation of sinkholes, loss of biodiversity, and contamination of soil, groundwater, and surface water by chemicals from mining processes.The environmental effects of surface mining include;

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  • All surface mining techniques negatively affect the environment, though some methods are more damaging than others.
7 0
2 years ago
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