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
galben [10]
3 years ago
7

Rachel was very sick with a bacterial infection. The infection was treated with antibiotics. Rachel seemed to get well, but in a

few weeks, she was sick again. How can this be explained? the antibiotics did not kill the bacteria; it forced them to be dormant the stronger, more resistant bacteria survived the antibiotics and reproduced antibiotics only kill a portion of the bacteria, regardless how much medicine Rachel takes
Biology
1 answer:
34kurt3 years ago
3 0

Answer:

Selective pressure: The bacteria become susceptible to the drug and can withstand it.

You might be interested in
What is the main function of nervous tissue?
nekit [7.7K]
Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning.
3 0
3 years ago
Use this new information to determine the parents' genotypes (indicated by red arrows). then calculate the probabilities that th
Elena-2011 [213]
<span>All children have a 50/50 chance of being male or being female. There is no true predisposition of having all male or all female children because it depends on the strength of the sperm and which sperm reaches the egg first. If the stronger sperm is an X chromosome sperm cell the child will be female while if the Y chromosome sperm cell is stronger then the child will be male. With women it does not matter because women have 2 X chromosomes versus men who only have 1 X and 1 Y. So the probability that the second child to b born a male will be 50/50 just like any child that is born.</span>
8 0
3 years ago
While we usually think of fever as a bad thing, a fever is actually signifying that an immune response is progressing! Overall,
zalisa [80]

Answer:

E. Interleukin-1

Explanation:

Interleukin-1 is produced by macrophages and is involved in promoting the proliferation of helper T cells. Interleukin-1 also acts on the hypothalamus to cause fever. Fever refers to abnormally high body temperature. During infection and inflammation, the hypothalamic thermostat is reset in response to interleukin-1 resulting in fever. The presence of certain bacterial toxins in the body triggers the release of interleukin-1 from macrophages and the body temperature is elevated. Fever inhibits the growth of some microbes, intensifies the effects of interferons, and stimulates the body's immune reactions.

8 0
3 years ago
What happens in meiosis I and II
rusak2 [61]

Answer: Both Meiosis I and II have the same number and arrangement of phases: prophase, metaphase, anaphase, and telophase. Both produce two daughter cells from each parent cell. However, Meiosis I begins with one diploid parent cell and ends with two haploid daughter cells, halving the number of chromosomes in each cell.

Explanation:

7 0
3 years ago
The two lower leg bones are called the _____ and the _____.
Ad libitum [116K]
The two lower leg bones are called the tibia and the fibula
8 0
2 years ago
Read 2 more answers
Other questions:
  • He _____________ rate is the level at which a population remains stable.
    12·1 answer
  • A nurse obtains the history of a client with early colon cancer. which clinical finding does the nurse consider consistent with
    15·1 answer
  • Which one of the following is NOT a characteristic of DNA Vaccine?
    9·1 answer
  • Instructions
    9·2 answers
  • Which kingdom(s) include organisms that are autotrophic or heterotrophic?
    8·2 answers
  • What is the product P?<br> A) Energy <br> B) Glucose <br> C) Hydrogen <br> D) Nitrogen
    15·2 answers
  • What is the apparent brightness of a star?
    15·2 answers
  • Alex is using a microwave to heat up his food The microwave is producing heat by
    11·1 answer
  • Which of these metals are magnetic?<br> a.copper<br> b.steel<br> c.nickel<br> d.tin<br> e.aluminum
    12·2 answers
  • PLS HELP
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!