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
ser-zykov [4K]
3 years ago
11

Why doesn't a negative stain colorize the cells in the smear?

Biology
1 answer:
iris [78.8K]3 years ago
5 0

Answer:

It is impossible for a negative stain to colorize the cells in the smear because the chromogen of the negative stain carries a negative charge and is repelled as a result of the negative charge present on the surface of the cell. In this light, the stain can only colorize the background, thus permitting visibility of the capsule and the cell.

Explanation:

You might be interested in
Battery disposal is a disadvantage of which form of energy?
Arte-miy333 [17]

Answer:

The answer is solar.

Battery disposal is a disadvantage of SOLAR ENERGY.

Let me know if this helps!

3 0
3 years ago
Does an organisms metabolism involve sleeping?
lana66690 [7]
An organisms metabolism doesn't quite invilve sleeping by the idea that metabolism is greatly enhance when one has a stimulus of generated cells (thanks to the assistance of hormonic means). Metabolism can be formulated better, however, metabolism does not really involve sleep.
6 0
3 years ago
Which of the following statements is true? A thin layer of chyme protects the lining of the digestive tract from being broken do
zheka24 [161]

The correct answer is: Heartburn often results when the gastroesophageal sphincter fails to close properly.

The gastroesophageal sphincter is a muscle located at the bottom of the esophagus that has to be relaxed in order to allow food to flow down into the stomach. After it contracts (tightens), the food and the stomach acid can’t flow back up into the esophagus.

When the gastroesophageal sphincter fails to close properly acid reflux occurs and causes the heartburn.

6 0
3 years ago
A woman with normal vision has a son. The woman’s maternal grandfather is color-blind. What is the probability that the son is c
Reptile [31]

Answer:

= \frac{1}{4}

Explanation:

Given that the woman’s maternal grandfather is color-blind, then it is possible that the woman is a carrier of color-blind allele.

Then probability that the woman is a carrier of color-blind allele is = \frac{1}{2}  

So if a carrier woman cross with a normal man

Let say the gene of the carrier woman is: XX^c

and the normal man = XY

so if we have a cross between  XY and XX^c; we have:

                     X                     Y

X                   XX                 XY

X^c                 XX^c                 X^cY

we can see the offspring to be :

XX =normal unaffected female

XY = normal unaffected male

XX^c = carrier female for color-blind

X^cY = carrier male for color-bind

Then probability that of  inheriting defective allele = \frac{2}{4} = \frac{1}{2}

Let's not forget that the probability that the woman is a carrier of color-blind allele is = \frac{1}{2}  

∴  the probability that the son is colorblind = \frac{1}{2}*\frac{1}{2}

= \frac{1}{4}

3 0
3 years ago
Learning objective: 12.08.05 describe the initiation and propagation of depolarization and repolarization.
denis-greek [22]
Depolarization is initiated when there is an influx of sodium inside the cell as opposed to repolarization, where potassium exits the cell (occurring after Na+ gates close). Remember that for every 3 Na+ in, there is 2 K+ out. This imbalance helps to stabilize the membrane.
7 0
3 years ago
Other questions:
  • 15 [points
    11·2 answers
  • What if the drug inhibited the linking of NAG directly to NAM in peptidoglycan. would you expect it cause mortality in Bordetell
    14·1 answer
  • Are all characteristics of a volcano dangerous?
    15·1 answer
  • What kind of fault does the Nazca plate share with the Pacific plate?
    12·1 answer
  • One of the functions of the thoracic cavity is to protect the organs of the cardiovascular and respiratory systems.
    13·1 answer
  • How does the speckled coat of a young deer help it to survive?
    11·1 answer
  • What cellular structures do eukaryotic cells contain, but prokaryotic cells lack?
    14·1 answer
  • Imagine that the climate in your region became extremely arid, and freshwater became a scarce and precious resource. Wasteful us
    12·1 answer
  • a common fruit fly has eight chromosomes in a normal body cell. after a cell undergoes mitosis, how many chromosomes will each n
    7·1 answer
  • Which of the following is an example of a beneficial mutation?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!