BIOLOGY HIGH SCHOOL

Refraction occurs when a wave changes its

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Answer 1
Answer:

Hi Brainiac


Refraction occurs when a wave changes its speed


I hope that's help:0
Answer 2
Answer:

Final answer:

Refraction occurs when a wave changes its direction as it passes from one medium to another medium with a different optical density.

Explanation:

Refraction occurs when a wave changes its direction as it passes from one medium to another medium with a different optical density. This change in direction is caused by the change in speed of the wave. When a wave encounters a boundary between two media, such as when light passes from air to water, it can bend or change direction due to the difference in refractive indices between the two media.

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What are the chemical products of cellular respiration?

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The chemical products of cellular respiration are carbon dioxide, water, and ATP.

What are the chemical products?

Carbon dioxide: Carbon dioxide is a waste product that is produced when glucose is broken down. It is released into the atmosphere, where it is used by plants to make food.

Water: Water is also a waste product that is produced during cellular respiration. It is used by the cell for a variety of purposes, including transporting nutrients and waste products, and cooling the cell.

ATP: ATP is the main energy molecule of the cell. It is used to power all of the cell's activities, including movement, growth, and reproduction.

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Answer:

Oxygen and glucose are both reactants in the Process of cellular respiration.

ATP is the main Product  formed in cellular respiration, and waste products include carbon dioxide and water.

Hope this helps!!

Which organic molecules have so far been discovered in extraterrestrial situations, such as meteorites, comets, and even interstellar clouds?

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The kind of molecules that have been discovered would be the carbon based molecules which have been found in the meteorites,circumstellar matter and interstellar clouds. It includes the hydrogen cyanide, isopropyl cyanide and the methyl cyanide.Hope this answer would help.

Biologists estimate how long ago species separated from a common ancestor using a technique called

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The answer is molecular clocks.

Molecular clocks use rates of mutation to measure evolutionary time. This technique is based on the fact that mutations add up at a fairly constant rate in the DNA of species that evolved from a common ancestor. The more mutations that happened in each lineage, the greater is the differences between these lineages and vice versa.

Your answer is molecular clocks.

You have a plant with yellow seeds, which express a dominant phenotype. How would you determine the plant's genotype? Conduct a Punnett square with a purebred recessive plant. Conduct a test cross with a purebred recessive plant. Conduct a test cross with a purebred dominant plant. Conduct a test cross with a hybrid plant

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The answer is Conduct a test cross with a purebred recessive plant. 

Test cross is the cross between an organism with unknown dominant genotype and an organism with known recessive genotype.

Since dominant trait results from a dominant allele, the test cross can determine if an unknown genotype is heterozygous and homozygous dominant. 

If A is dominant allele, and a is recessive allele, then AA is dominant homozygote, Aa is a heterozygote, and aa is recessive homozygote.

According to the Punnett square, if all of the offspring are heterozygote (Aa), then unknown genotype is dominant homozygous (AA). If half of the offspring are the heterozygote, and the other half are recessive homozygote, then the unknown genotype is heterozygote (Aa).

Answer:

Conduct a test cross with a purebred recessive plant.

Explanation:

Verified after test was graded within ody ssey ware system as question # 10.

The questions wording: You have a plant with yellow seeds, which express a dominant phenotype.  How would you determine the plant's genotype?

What could happen if the epiglottis fails to close correctly over the trachea when a person swallowsA. the person may experience heartburn
B. the person may choke
C. the person will experience a heart attack
D. the person will get swollen lymph nodes
36. which hormone is largely responsible women having wider hips than me?
A. testosterone
B. estrogen
C. progesterone
D. FSH

Answers

If the epiglottis fails to close correctly, a person may choke. The epiglottis is a leaf-shaped flap made of elastic cartilage that covers the opening of the larynx and prevents food or liquids from entering it.

 Chocking may occur if the epiglottis fails to close, allowing food or liquids to enter the airway.

Estrogen is the hormone that is responsible for wider hips and other sexual characteristics.  Although men also have some estrogen, this hormone is much higher in women .

The answer to your questions are

1. B

2. B

Label each example as either (PI) passive or (AI) active immunity:a. ________ Bill had chicken pox when he was five. He doesn’t catch it again, even when his nephew gets sick with the virus.
b. _______ Billy Jr gets vaccinated with a live attenuated form of the chicken pox virus. He doesn’t get chicken pox after playing with his infected cousin.
c. _______ Bill’s 3 month old daughter is breast feeding. She does not get chicken pox after playing with her infected cousin.

Answers

First, let's distinguish active from passive immunity:
- Active immunity occurs in a direct exposure of individuals to live pathogens. The result is a development of a disease. After that, individuals acquire immunity to the disease.
- Passive immunity is induced by vaccines with antibodies for a disease, so the disease does not develop.

a. ACTIVE IMMUNITY - Bill had a disease, so it must be active immunity.
b. PASSIVE IMMUNITY - Bill got a vaccine and a disease did not develop, so it must be passive immunity.
c. PASSIVE IMMUNITY - Although, 3-month-old daughter did not get a vaccine, she has mother's antibodies from the milk so she will not develop a disease.

Answer:

Active

Active

Passive
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