BIOLOGY HIGH SCHOOL

Sea otters are important predators of sea urchins, an animal that eats giant brown kelp in continental shelf zones where they form huge kelp beds. It was observed that the removal of sea otters from the west coast led to an increase in the sea urchin population. These sea urchins fed on the large kelp fronds, destroying the kelp beds that serve as an important source of food and protection for spawning fish. What role does the sea otter play in this case? Dominant species Invasive species Keystone species

Answers

Answer 1
Answer: In some case, I would say the sea otter would be both a dominant and keystone specie. Sea otters are main predators and most often are at the top or near the top of the food chain (whales and sharks would trump them easily as the top predators), but in this specific situation, the sea otter is a keystone species. A keystone species is an organism that more often than not an ecosystem can not continue without. In this situation, without the sea otter to control the sea urchin population is grew out of control and caused the expulsion of the giant brown kelp and havoc for the spawning fish. Thus, the sea otter is a must.
Answer 2
Answer:

Answer:

the answer is C

Explanation:

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Which reagent is used to test for protein?

Answers

Answer:

Biuret reagent is the correct answer.

Explanation:

Biuret reagent is used to test the presence of the protein in a solution.

The biuret solution contains

  • Potassium hydroxide solution.
  • Hydrated Copper sulfate.
  • Potassium sodium tartrate.

Biuret reagent is a solution that is blue in color and when it reacts with protein the color gets a change to pink-purple due presence of several peptide bonds and when there is no protein present in the solution the color remains blue.

The biuret reaction takes place when the copper II ions placed in the solution as a cupric sulfate gets reduce to copper I ions due to the presence of peptide bonds and the color change is observed from blue to violet.

The biuret reagent is used to test for proteins. A biuret test, also known as a peptide bond test, is a chemical test used to measure the number of peptide bonds present in an analyte.

Biuret reagent consists of NaOH (sodium hydroxide) and hydrochlorofluorocarbons (sulfate) and potassium sodium tartrate. The tartrate is added to the chelate to stabilize the cupric ions.

When pure, the reagent is a pale blue color. However, when the reagent is mixed with protein, the reaction results in a light purple color. The deep blue/purple color is caused by a copper ion complex with a protein amide group.

To learn more about the biuret reagent, refer to the link:

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How does the geographic distribution of organisms support the theory of evolution?

Answers

Because its in relation with the characteristics of ecosystems that the organisms had adapted
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The study of viruses is a part of biology becausea. they belong to the kingdom Monera.
c. they are living organisms.
b. they are about to become extinct.
d. they are active inside living cells.

Answers

d. Viruses are not considered to be living organisms but they can function inside living cells and multiply by using things in the cells. They can cause diseases in living organism and studying them is important in the medical field.

Use the words haploid cell, diploid cell, and fertilization all together in a sentence.

Answers

Using the wordshaploid cell, diploid cell, and fertilization all together in a sentence -  Fertilization is the union of two unicellular, haploid gametes to produce one unicellular, diploid zygote.

The process of combining the male gamete, or sperm, with the female gamete, or ovum. The product of fertilization is a cell called a zygote.

  • Fertilization takes place when two haploid cells fuse together such as sperm cells and egg cells.
  • Haploid cells have a single set of chromosomes.
  • The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes that fuse during fertilization.
  • Diploid cells are a cell that containstwo sets of chromosomes that are formed after fertilization also called a zygote.

Thus, the correct sentence would be - Fertilization is the union of two unicellular, haploid gametes to produce one unicellular, diploid zygote.

Learn more about:

brainly.com/question/14796225

Answer:

The sexual life cycles involve the alternation between meiosis and fertilization. Meiosis is a process where the diploid cells gives a rise to haploid cells, and fertilization is the process where two haploid cells (gametes) fuse to form a diploid zygote.

Explanation:

Hope this helps
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