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nalin [4]
2 years ago
12

Which of the following statements is true?

Biology
1 answer:
ziro4ka [17]2 years ago
6 0
Lipids contain more energy that carbohydrates because they contain more carbon to hydrogen bonds to release energy when broken.

<span>A macromolecule is a large molecule. There are four groups of macromolecules: carbohydrates, proteins, nucleic acids and lipids. Lipids consist of glycerol and fatty acids and are constructed from fats, oils, waxes, phospholipids and steroids. A lipid's function is to insulate the body and provide warmth in cold conditions. It can be concluded that a person with very little body fat gets very cold easily and a person with a lot of body fat gets very warm very quickly.
</span>
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Your assignment in biology lab is to design an experiment that would detect whether a substance is breaking down, or digesting,
Elis [28]

Answer: Option B

Explanation: First we should understand the role of enzyme and acid here. Pepsin is an enzyme which will break down proteins into simple monomers (like amino acids). And, acid causes digestion which means it will break down the protein into its respective elements and compounds. Water will act as a control in this experiment.

Option B is correct because it has all three criteria-                                                                                   1. Control [water + protein]                                                                                                               2. With enzyme [egg white + pepsin]                                                                                           3. With acid and enzyme

So this will give us an idea whether pepsin alone is breaking down the protein or digesting it. And there would be difference in test tube B and C. So this will clear the difference.

Option A is incorrect because it has not mentioned any different test tube for checking what happened with the protein. And, Option C is incorrect because mass of egg white will remain same after digestion also.

6 0
2 years ago
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
Each of 100 laboratory rats has available both plain water and a mixture of water and caffeine in their cages. After 24 hours, t
olchik [2.2K]

Answer:

C. About 18 percent of the variation in blood pressure can be explained by a linear relationship between blood pressure and caffeine consumed.

Explanation:

Here, r = 0.428

∴ We can say it will give a positive curve, as 0.428 indicates it is a positive correlation.

Though the amount of correlation is low, still it is positive and more than 0.4

So, nearly about 18% of the variation in the blood pressure can be observed by the consumption of caffeine water. As consumption of caffeine water and blood pressure is both increasing so we can say that r= 0.428 will give a positive linear curve.

 

3 0
2 years ago
How does the author’s use of details convey her point of view about Eleanor Roosevelt’s life and legacy?
Vera_Pavlovna [14]

Author's use of details convey to Eleanor Rossevelt life and legacy are described below.

Explanation:

1.She advocated for expanded roles for women in the workplace, the civil rights of African Americans and Asian Americans, and the rights of World War II refugees. Following her husband's death in 1945, Roosevelt remained active in politics for the remaining 17 years of her life.

2.The fireside chats were a series of evening radio addresses given by U.S. President Franklin D. Roosevelt (known colloquially as "FDR") between 1933 and 1944.

3..President Theodore Roosevelt, an Oyster Bay Roosevelt, was the uncle of Eleanor Roosevelt later wife of Franklin Roosevelt. Despite political differences that caused family members to actively campaign against each other, the two branches generally remained friendly.

4.Champions of Human Rights. Eleanor Roosevelt (1884–1962)

  • Continuing her work on behalf of all people, she advocated equal rights for women, African-Americans and Depression-era workers, bringing inspiration and attention to their causes.

7 0
2 years ago
The spark of life where did organic molecules come from case study answers
Veronika [31]
<span>The spark of life is heavily debated but many scientists believe that lightning in the Earth's atmosphere created the atmospheric conditions necessary for the molecular process. Certain elements such as water vapor and hydrogen sulfide were part of a bonding process that began the first spark of life.</span>
7 0
2 years ago
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