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
cluponka [151]
3 years ago
11

Dr. Paul Ehrlich observed that the differential stain developed by Dr. Gram suggested bacteria could be killed differentially by

chemicals. He called these potential antibacterial agents "magic bullets". Which among the following cell features of bacteria are potential targets for Dr. Ehrlich’s "magic bullets" due to significant difference or absence from humans?
a. DNA
b. Glycocalyx
c. Cytoplasmic membrane
d. Ribosome
e. Cytoskeleton
f. Cell wall
Biology
1 answer:
Illusion [34]3 years ago
8 0

Answer:

d. Ribosome

f. Cell wall

Explanation:

In humans 80s type of ribosome is present and in bacteria 70s type of ribosome is present. Human cells do not have cell wall while bacterial cells have peptidoglycan cell wall. These differences can be targeted by the potential antibacterial agents.

For example, tetracycline antibiotic inhibits the binding of important molecules to bacterial ribosome which ultimately inhibits the protein synthesis in bacteria. Vancomycin antibiotic on other hand inhibits the cell wall formation in bacteria by inhibiting peptidoglycan synthesis.

You might be interested in
Suppose a group of bobcats that normally live and hunt in the tops of mountains, start hunting prey at the base of the mountain
posledela

Answer:

The correct answer would be b.  Their numbers will soon decrease.

Bobcats are opportunistic carnivores that feed on various types of prey such as mice, rabbits, voles, mountain beaver, gophers, yellow-bellied marmots, insects, birds, reptiles, and carrion.

If a group of Bobcats moves at the bottom of the mountain, then they will start hunting and eating all the prey available in the area.

It will result in the rapid decrease in the population of preys.

8 0
3 years ago
Read 2 more answers
When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid gr
Agata [3.3K]
The correct answer is '<span>Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.</span>' The additional nutrients in the water will result in an algal bloom. These algae will result in drastic oxygen fluctuation, from oxygen rich conditions during the day as algae photosynthesize, to anoxic conditions during the night when the algae respire. However, the algal bloom will eventually deplete the available nutrients, resulting in a vast algal die off. The decomposing algae result in anoxic conditions, and the effects are sometimes very obvious, with fish gasping for breath and dying. 
8 0
3 years ago
Water is a ____ molecule
rusak2 [61]
Water is a H2o molecule
6 0
3 years ago
Select the correct answer.
algol [13]

Answer:

the answer is biochemistry

5 0
3 years ago
Read 2 more answers
You are studying a population of ground squirrels. You trap 100 individuals and find 9 that have a light colored coat, and the r
Genrish500 [490]

The question is incomplete. Here is the complete question.

You are studying a population of ground squirrels. You trap 100 individuals and find 9 that have a light colored coat and the rest have a dark coat. You know that light coat color is recessive in ground squirrels. What is the allele frequency for the light coat allele  and the dark coat allele? How many of the dark coated individuals do you expect to be heterozygotes at the coat color gene? Assume the population is at H-W equilibrium.

Answer: Allele frequency for light coat: q = 0.3;

              Allele frequency for dark coat: p = 0.7;

             There will be 42 heterozygote;

Explanation: A population in H-W equilibrium is a population which doesn't change from one generation to the next if there are no disturbing factors, as migration or mutation.

It follows the equation: p^{2}+2pq+q^{2}=1.

p represents the frequency of the dominant allele;

q represents the frequency of the recessive allele;

2pq represents heterozygote individuals;

The sum of frequencies of both alleles must be 1, i.e.: p+q=1

For the population of squirrels:

  • Frequency of recessive allele

q^{2} = \frac{9}{100}

q = \sqrt{\frac{9}{100}}

q = 0.3

  • Frequency of dominant allele

p+q=1

p=1-q

p=1-0.3

p = 0.7

  • Frequency of heterozygote

2pq = 2*0.7*0.3 = 0.42

In a population of 100 individuals: 0.42*100 = 42

The allele frequency for the light coat is 0.3; for the dark coat is 0.7.

It is expected to have 42 heterozygote individuals in this population.

3 0
3 years ago
Other questions:
  • In 1930, Geller was the first person in the world to determine if a person was intoxicated at time of death. How'd he do it?
    14·1 answer
  • BRAINLIESTTTT ASAP!<br><br> How are food and oxygen made during the process of photosynthesis?
    10·1 answer
  • The atmosphere traps a part of the Sun’s heat that is reflected from Earth’s surface. This effect, called the greenhouse effect,
    7·2 answers
  • Which of the following sets of indicators of sustainability is significantly higher in North America than other regions of the w
    5·1 answer
  • Genotype is __________, whereas a phenotype is __________.
    6·1 answer
  • The emission of radioactive particles by isotopes as they change into other elements over
    12·2 answers
  • .... Weak attraction
    8·1 answer
  • Who holds the public property rights? A. individuals B. government C. businesses D. local communities
    9·2 answers
  • A. All of the animal acids will change
    11·1 answer
  • In a solution, solute substances naturally tend to move from areas of higher concentration to areas of lower
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!