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
s344n2d4d5 [400]
3 years ago
5

What was the purpose of placing the drop of distilled water onto the slide before smearing the bacterial colony onto the slide?

What do you think would have resulted if the distilled water was not used?
Biology
1 answer:
12345 [234]3 years ago
4 0

Answer:

1. In order to fix the bacterial to the slide;

<u>so that it will not be lost during the staining procedure.</u>

<u>so that false impression  or result will not be given by the bacteria in water,</u>

<u>Distilled water is used to prevent contamination with impurities  e,g metals ions and crystals</u>.

Explanation.

In smear preparation; the bacterial cells should also be well dispersed,so that they do not clumped together to form' big glob'.(large round masses) The later affect clear field view of the bacterial mophology, affected staining,  and therefore  gives inaccurate results,

Fixing to the slide also affects the morphology of bacterial cells, through shrinking in size, which can lead to loss of structural characteristics and extra-cellular matrixes,

You might be interested in
When a cell is deprived of oxygen, its lysosomes tend to burst and release their contents into the cell. As a result of this, th
Nikolay [14]

Answer:

The correct answer is - undergo self-digestion and die.

Explanation:

Lysosomes are cell organelle that is membrane-bound and has digestive enzymes in them. These cell organelle help in digesting cells that are worn out, ruptured cells deprived of oxygen by bursting themselves.

Its bursting nature also helps in digesting and killing antigens and microbes. It is a very essential cell organelle that helps in digesting and killing damage cell parts or cells.

6 0
3 years ago
What is your opinion on climate change? Do you believe it is the naturally occurring fluctuations of Earth's temperature? OR Do
Alinara [238K]
I do believe that it is both naturally occurring and caused by human activity. Although science has proven that it is something that naturally progresses with time, humans have sped up the process. Hope this helps:)
3 0
3 years ago
if the following graph represents the decay of strontium-90 in an igneous rock, what event occurred at 0 years on the horizontal
kodGreya [7K]

Answer:

At 0 years, an event took place which is known as metamorphosis of igneous rock i.e., formation of igneous rocks from melted magma.

Strontium-90 is a radioactive element which undergoes beta decay to form yttrium-90. It has a half life of approximately 28 years and decay energy of 0.546 MeV. This radioactivity is used by geologist to estimate the age of the rock, fossils, meteorites etc. Other radioactive elements used by the geologists are carbon-40, potassium-40 etc.

Radiometric clock is set when the rock was formed in the past i.e., the moment when an ingenious rock was solidified from molten magma.

7 0
3 years ago
Read 2 more answers
Identify the best description of a heme group.
Fed [463]
I would say d. Multi-part protein that reversibly binds to oxygen molecules (...)
8 0
3 years ago
Which of the following best describes the use of a renewable resource? (2 points)
geniusboy [140]

Answer:

The answer is D

Explanation:

A renewable resource is something that can be replenished, usually naturally. Since wind is a natural occurrence, D should be your answer.

4 0
3 years ago
Other questions:
  • 1. What percent of the water on Earth is salt water?
    9·2 answers
  • PLEASE HELP !!!!!!!
    13·1 answer
  • Besides Antarctica which continent is made up almost entirely of desert
    14·1 answer
  • Match the term with the appropriate definition.
    14·1 answer
  • Which anticodon pairs with the codon GAU?<br><br> A) CUA <br> B) GAU <br> C) CTA <br> D) GAT
    8·2 answers
  • Someone who has an anthropocentric view doesn’t care about animals.
    6·1 answer
  • true or false : the oxygen and carbon in a carbon dioxide molecule cannot be separated once the bonds have been formed between a
    13·1 answer
  • Ionic compounds form ions in water.<br> True?<br> False?
    13·1 answer
  • What is the energy transformation of a flashlight?
    6·1 answer
  • Why is postoperative pain controlled most effectively by giving preemptive analgesic/s before the surgical procedure is carried
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!