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3 years ago

______ make their own food by extracting compounds from the ocean.photoautotrophs,chemoautotrophs,cyanobacteria

1 answer:

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Both photoautotrophs and chemoautotrophs synthesize organic compounds from (inorganic) carbon dioxide, a process known as carbon fixation. Photoautotrophs get the energy to perform these reactions from light. Chemoautotrophs get it from electron donors such as hydrogen sulfide and ammonia. Cyanobacteria, by contrast, convert nitrogen from the atmosphere into ammonia, a process known as nitrogen fixation.

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A pigment solution contains compound A with 4 polar groups and compound B with 2 polar groups. You plan to separate these compou

Karolina [17]

The more polar A compound moves ahead of the less polar B compound.

Explanation:

The analytical process that involves the separation of colored substance or chemicals is named as paper chromatography, a replacement of thin-layer chromatography. In this method, there is the use of two solvents and rotation of paper at $90^0$ . It helps in isolating two complex compounds of equal polarity.

A non-polar mixture of solvent is required in the mobile phase of this method. In accordance with the retention factor of this process, the more polar compound A will go further than compound B as the solvent is non-polar.

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4 years ago

Which of the following statements about PCR is/are FALSE? There may be more than one correct answer.

Harrizon [31]

Answer: The answer is C

Explanation:

After each PCR cycle, the amount of DNA does not increase in a linear manner

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3 years ago

What two words best describe bacterial reproduction? Why?

Vadim26 [7]

Answer: Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells. The two daughter cells are identical to the parent cell.

Explanation:

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3 years ago

4. Who discovered the first known case of a typhoid carrier?

SashulF [63]

Answer:

Mary Mallon (September 23, 1869 – November 11, 1938), also known as Typhoid Mary, was an Irish-born cook believed to have infected 53 people with typhoid fever, three of whom died, and the first person in the United States identified as an asymptomatic carrier of the disease pathogen, Salmonella typhi.

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3 years ago

Read 2 more answers

What is the weave pattern of the following

Sergeu [11.5K]

It is a method in the textile industry where two sets of threads are interwoven at the right-angles to form a cloth

Explanation:

1.100% cotton:

open weave.
easily distorted with water and washing.
stretches in one direction only.

2. 100% wool:

very strong.
dense and compact.
different faces.
diagonal design.
soft and pliable.

3. 100% Nylon Rope:

Not durable.
Tends to snag
The shiny surface.
high light reflectance.
light fiction with other garments.

4. 100% Spandex Nylon:

Not durable.
Tends to snag and break during wear.
light fiction with other garments.

5. 100% cotton blend

open weave.

easily distorted with water and washing.

4 0

3 years ago