1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bingel [31]
3 years ago
13

Which three statements may correctly explain why the population size increases after time point C?a. Bacteria that acquired a mu

tation that conferred drug- resistance had a growth advantage over non-resistant bacteria.b. The population increase just after time point C indicates that antibiotic use was discontinued.c. Between time points C and D, drug-resistant bacteria were reproducing faster than non-drug resistant bacteria were dying.d. The few drug-resistant bacteria in the population reproduced, quickly leading to a large drug- resistant population.e. Because the population grew more rapidly after time point C, the bacteria must have acquired a second drug- resistance mutation.
Biology
1 answer:
Lady bird [3.3K]3 years ago
7 0

Answer:

A,C, D

Explanation:

Bacteria that acquired a mutation that conferred drug- resistance had a growth advantage over non-resistant bacteria.

Between time points C and D, drug-resistant bacteria were reproducing faster than non-drug resistant bacteria were dying.

The few drug-resistant bacteria in the population reproduced, quickly leading to a large drug- resistant population.

There is no indication that a second antibiotic was used, so it is not possible to assume a second drug-resistance mutation occurred. There is also no indication that antibiotics were discontinued.

You might be interested in
Modern kangaroos are found only in Australia. Based on biogeography, what can you conclude about the fossils of organisms that r
Finger [1]

Answer: What makes a marsupial, a marsupial? A discussion on the historical biogeography and biological evolution of marsupial mammals. Dr. Robert Voss is a professor at Richard Gilder Graduate School and the American Museum of Natural History. His primary research interests are the evolution of marsupials and the systematics and biogeography of other Neotropical mammals that inhabit moist-forest habitats in Amazonia and the Andes.

What anatomical characteristics distinguish marsupial mammals from placental?

Living marsupials and placentals can be distinguished by a number of anatomical features, including structural differences in their ear regions, teeth, postcranial skeletons, reproductive tracts, and brains. Most people think of pouches when they think about marsupials, but not all marsupials have pouches.

When did these two subclasses of mammals separate from their common ancestor? What do we know about that common ancestor?

The lineages that gave rise to living marsupials and placentals are recognizably distinct in the fossil record as far back as the Early Cretaceous (about 125 million years ago), so the most recent common ancestor of these groups must have lived even earlier. How much earlier is controversial, with some estimates suggesting a date of almost 150 million years (in the Late Jurassic). We don’t know anything about that ancestor for certain, but we assume that it was not unlike the earliest known marsupials and placentals: probably a small climbing (arboreal or semiarboreal) mammal, perhaps superficially resembling living opossums or tree shrews. Because the earliest known marsupial and placental fossils are from China, most paleontologists assume that their most recent common ancestor lived somewhere in eastern Asia.

What is convergent evolution and what are some examples of convergent evolution between marsupial and placental mammals?

Convergent evolution is the appearance of similar traits in distantly related lineages. Examples of convergent evolution between placentals and marsupials are the extinct Tasmanian “wolf” (a very wolflike marsupial), marsupial “moles” (living molelike marsupials that burrow in the sandy deserts of Australia), and kangaroo rats (North American rodents that hop on their hind legs like kangaroos).

Explanation:

7 0
3 years ago
The difference between protostomes and deuterostomes is _____. protostomes have only an ectoderm and endoderm protostomes have o
vladimir1956 [14]
Protostomes develop a mouth first followed by the anus. Deuterostomes are the opposite.
5 0
3 years ago
A cotton farmer applies a new insecticide against the boll weevil to his crop for several years. at first, the treatment was suc
romanna [79]
Yes, it is possible that evolution occurs in this case.

At first, the new insecticide is effective against the boll weevil. Spraying the insecticide will kill the boll weevil in a way. The insecticide might attack boll weevil enzyme or any part of its organs.<span>
But some of them might have a mutation that renders the insecticide ineffective. The mutation probably happens to DNA that code the enzyme or protein that targeted by the insecticide, makes the insecticide completely ineffective.
The next spray will kill all old organism, leaving the new resistant organism in less competition area. This will allow the resistant organism to grow fast and eventually replace all the old organism in the area.</span>
4 0
4 years ago
What is the product made by the electron transport chain?
Lunna [17]

Answer:

<em><u>Hey</u></em><em><u> </u></em><em><u>mate</u></em><em><u>!</u></em>

The correct answer is option. C.

<em><u>ATP</u></em>

Explanation:

the final product made by the electron transport chain is water and <em><u>ATP</u></em><em><u>.</u></em>

<em><u>hop</u></em><em><u>e</u></em><em><u> it</u></em><em><u> helped</u></em><em><u> you</u></em><em><u>:</u></em><em><u>)</u></em>

3 0
4 years ago
One of the most crucial factors in the development of fatigue appears to be a depletion of ATP.
Papessa [141]

Answer:

Option A

True

Explanation:

Adenosine triphosphate (ATP) is the molecule in the cells that carry energy. They help to trap the energy that is obtained during respiration and the breaking down of food, in order to release it to the cells of the living organisms when the need arises.

Once the ATP levels deplete in the body, cellular fatigue begins to occur, as the cells do not have the required energy to perform their necessary functions.

This makes the correct option to be A: True. The depletion of the ATP levels in the body causes fatigue

6 0
3 years ago
Other questions:
  • In cats, black fur color is caused by an X-linked allele; the other allele at this locus causes orange color. The heterozygote i
    10·1 answer
  • For what purpose is DNA fingerprinting used?
    12·1 answer
  • Would a mutation in a red blood cell be passed on to offspring? Why or why not?
    14·1 answer
  • DOES SOMEONE KNOW THE ANSWERS TO THESE IF SO I NEED HELP PLEASE........
    13·1 answer
  • 5. Brainstorm what you could do to help reduce overuse of limited resources.
    14·1 answer
  • If a genetic error occurred in the liver, which specific effect would it have on the liver cells?
    14·1 answer
  • What have you learned about Biodegradable Plastic.
    14·1 answer
  • Chromatids are attached to the...
    5·1 answer
  • 7.
    7·1 answer
  • Which of the following groups of animals eat other animals? (More than one answer)
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!