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
sesenic [268]
3 years ago
11

In his attempt to develop a pneumonia vaccine, Frederick Griffith injected mice with various combinations of living and dead bac

teria. Keeping in mind that the R strain was the one without a capsule, what was the outcome when Griffith injected dead S bacteria combined with living R bacteria?
Biology
1 answer:
n200080 [17]3 years ago
4 0

Answer:

The mice died

Explanation:

In Griffith's experiment, two strains of the same bacteria were used. S strain was smooth because it had a polysaccharide coat. This coat also made it virulent because mouse immune system was not able to destroy it and ultimately the mice died. R strain was rough because it did not have the coat and thus was harmless to mice.

When Griffith injected mice with dead S bacteria and living R bacteria together, the mice died. Live R bacteria had taken up the genetic material or as Griffith called "transforming principle" from the dead S bacteria and transformed into S bacteria. So live S bacteria were present again and they killed the mice.

You might be interested in
PLEASE HELP MEEEEEE!!!!
Lynna [10]

Answer:

The answer to this question is D.

Explanation:

This is because it was affected by the wind because sand is very light. ALso, I already learned this stuff so I am kind of an expert ngl.

8 0
1 year ago
What do you notice about the ligands and their receptors in these images?
aliina [53]

Answer:

What can be noticed about the ligands and their receptor is that the configuration of both coincide, as a key would with its lock, which demonstrates the specificity of a receptor by its ligand.

Explanation:

A <u>ligand</u> corresponds to a molecule considered a signal or a messenger, while the <u>receptor</u> is a protein on the cell surface, with the capacity to accept a ligand.

Ligands and receptors constitute pairs that complement each other, so that <u>each receptor can bind to a specific ligand</u>, similar to what happens with a key and a lock.

Once the ligand-receptor complex is formed, changes occur inside the cell, which define a certain effect.

8 0
2 years ago
Pseudomonas has a plasmid containing the mer operon that includes a gene for mercuric reductase catalyzing mercuric ion to an un
DENIUS [597]

Answer:

Mercuric particles is the right answer  

Pseudomonas has a plasmid containing the mer operon that incorporates a quality for mercuric reductase catalyzing mercuric particle to an uncharged type of mercury. The inducer is mercuric particles.

7 0
3 years ago
HELP The movement of tectonic plates in two different locations is shown below:
bogdanovich [222]
Answer: The answer is D.

Explanation: Because earthquakes take place in both the Convergent Plate in Location A and Transform Plate in Location B.
8 0
2 years ago
The American Black Bear lives in many parts of North America. A black bear in Colorado might hibernate for three or more months
Rudik [331]
C. Florida black bears have less territory and cannot risk a long hibernation.
4 0
2 years ago
Other questions:
  • Which of the following is not an observation or inference on which natural selection is based?A. There is heritable variation am
    5·1 answer
  • There are multiple types of mimicry, where animals imitate other animals in order to gain protection from predators or fool prey
    12·1 answer
  • A client reports sensing an unusual smell just prior to experiencing a tonic–clonic seizure. what term is used to describe this
    6·1 answer
  • Is this Red blood cell in a Hypotonic, Isotonic, or<br> Hypertonic solution?<br> H2O<br> LH₂O
    5·2 answers
  • The number of sperm cells that form from a primary spermatocyte is, whereas the number of functional egg cells that form from a
    11·1 answer
  • Describe a grassland ecosystem briefly.​
    7·2 answers
  • Where does the heat that warms your body come from? Explain your answer.
    9·1 answer
  • PLZZZZ HELP
    13·1 answer
  • What is natural resources ??<br><br>with examples ​
    12·2 answers
  • How do different parts of the body interact to maintain homeostasis?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!