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padilas [110]
3 years ago
8

Directions: Select each correct answer. More than one answer may be correct.

Biology
1 answer:
nordsb [41]3 years ago
5 0
When plants perform photosynthesis and when plants or animals perform aerobic cellular respiration
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What color is produced upon the addition of methyl red indicator to a culture of a Gram negative bacilli in MR-VP broth if the o
Leni [432]

Bright cherry red color is produced upon the addition of methyl red indicator to a culture of a Gram negative bacilli in MR-VP broth if the organism used the mixed acid pathway of fermentation.

What is MR-VP test?

  • As part of the IMViC testing, Methyl Red (MR) and Voges-Proskauer (VP) broth is utilized as the medium in which both the Methyl Red and Voges-Prosakuer tests can be conducted.
  • It is a straightforward broth made up of dextrose or glucose, buffers, and peptone.
  • In the Methyl Red test, an infected tube of MR-VP broth is mixed with the pH indicator methyl red.
  • The acids will overwhelm the buffers in the medium and create an acidic environment if the organism employs the mixed acid fermentation pathway and creates stable acidic end products.
  • If acidic end products are present when methyl red is introduced, the methyl red will remain red.

Learn more about the MR-VP test with the help of the given link:

brainly.com/question/27962086

#SPJ4

5 0
1 year ago
The histone proteins are among the most slowly evolving proteins. For example, a histone protein called histone H4 in cows and p
juin [17]

The statement is true, histones are proteins that are high in the amino acids lysine and arginine, making them extremely basic in their structure.

Histones control the degree of packaging of DNA during the processes of gene expression, replication or repair of hereditary material, among many others.

Histones H2A, H2B, H3 and H4 are small and basic proteins that are highly conserved in evolution and are composed of a globular domain at the carboxy-end, and by regions known as "tails", which are found at the amino-terminal end.

These tails are high in the amino acids lysine and arginine, which give them a positive charge.

This region is the site of numerous post-translational modifications that, it has been proposed, would modify the histone charge, altering the accessibility of the DNA and the protein / protein interactions with the nucleosome.

Chromatin compaction occurs due to the interaction between the negative charges of DNA and the positive charges of amino acids, mainly located on the tails of histones H3 and H4.

Therefore, we can conclude that the modifications on the amino acids lysine and arginine that form the basic part of the histone structure alter their functions.

Learn more about histone proteins here: brainly.com/question/14984828

8 0
3 years ago
PLEASE HELP WILL GIVE BRAINLIEST What would happen to a plant if the chloroplasts in its cells became damaged?
omeli [17]
I think the answers is B
5 0
2 years ago
What genotype would puppies have if two labradoodles were bred together?
amid [387]

Answer:

The answer is heterozygous

7 0
3 years ago
Read 2 more answers
Difference between Cellular and Humoral immunity?
Harrizon [31]

Cellular immunity kills pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.

<h3>What is the difference between Cellular and Humoral immunity?</h3>

The main difference between humoral and cell-mediated immunity is that humoral immunity produces antigen-specific antibodies, whereas cell-mediated immunity does not produce antigen-specific antibodies. The cellular immunity destroys pathogens and harm microbes that are present inside the cell, whereas humoral immunity kills pathogens outside the cell.

So we can conclude that cellular immunity kills pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.

Learn more about immunity here: brainly.com/question/6612564

#SPJ1

5 0
2 years ago
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