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
vlada-n [284]
3 years ago
15

The work of Alexander Fleming shows that ____.

Biology
2 answers:
Gennadij [26K]3 years ago
8 0

Answer: C) Not all scientific knowledge begins with an experiment

Explanation:

Fleming's lab was very messy, and one day when he is back from his vacations, he noticed that a colony of a fungus had grown as a contaminant on one of the Petri dishes sown with a bacteria called <em>Staphylococcus aureus</em>. Fleming observed a bacterial lysis, which means the death of the bacteria.

<u>The dishes got contaminated by Penicillium</u>, which is a mold that produces a an antibacterial substance, called penicillin. <u>This is an antibiotic that attacks a wide range of bacteria.</u>

At first, his findings were underestimated and he was not able to isolate this penicillin. But in 1940, Howard Florey and Ernst Chain found out that <u>this antibiotic could be used as a therapeutic agent to fight bacteria.</u>

So, in this case the discovery of penicillin was accidental, without planning a specific experiment.

Roman55 [17]3 years ago
5 0

Answer:

C

Explanation:

My science test told me so.

You might be interested in
DNA is measured in:<br><br> please help
yan [13]

DNA is measured in Angstroms.

<h3 /><h3>What is DNA?</h3>

DNA is defined as a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is also known as  the carrier of genetic information.

DNA represents deoxylribonucleic acid.

Units of DNA are known to be measured in Angstroms.

Value of 1 angstroms is 0.1 nanometer

For a thousand angstroms is 100 nanometer.

Therefore, DNA is measured in Angstroms.

Learn more about DNA here:

brainly.com/question/10840685

#SPJ1

6 0
1 year ago
does the following statement describe a function of dna, a function of rna, a function of both rna and dna, or either dna or rna
chubhunter [2.5K]
 function of dna, a function of rna, a function of both rna and dna, or either dna or rna?
5 0
3 years ago
What are some of the possible consequences of mutations
ankoles [38]

Answer:

Following are some of the possible consequences of mutations:  

1. Some of the mutations take place in proteins that play an essential role in the function of cells, and thus, the cell dies.  

2. Some mutations result in the origination of new traits like red hair.  

3. Some mutations take place in genes, which monitor the division of cell and thus cells start to divide out of control, resulting in cancer.  

4. Some of the mutations may be beneficial and may offer some benefit to the organism in some of the environments. These advantageous mutations may be encouraged by natural selection and are the basis for the evolution of life on Earth.  

6 0
3 years ago
What is the purpose of the cell cycle?
valentinak56 [21]

Answer:

The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells. These processes define the two major phases of the cell cycle.

Explanation:

4 0
3 years ago
Which of these tools is used to transfer a gene into an animal?
Kisachek [45]
B they are <span>used for the process of gene transfer</span>
3 0
3 years ago
Other questions:
  • Which stage are proteins actually synthesized
    14·1 answer
  • The passage of water through a selectively permeable membrane from a less concentraded region to a more concentrated region is c
    13·1 answer
  • When compared to a cheek cell, a muscle cell contains more of what
    7·2 answers
  • Sweating while hot is an example of what characteristic
    15·1 answer
  • What organisms disappeared in the holocene epoch?
    14·1 answer
  • what is the purpose of using multiple control groups in an experiment? a. to provide more work so that you look busy when doing
    13·2 answers
  • Evolution occurs when nature selects:
    6·1 answer
  • What is a pluton?????
    7·2 answers
  • What type of immune response is a phagocyte eating the invaders Non-specific or specific , why?
    5·1 answer
  • Name three different alleles for human hair color
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!