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kolbaska11 [484]
3 years ago
9

What is the purpose of the oil on the oil immersion lens?

Biology
2 answers:
murzikaleks [220]3 years ago
8 0
N light microscopy, oil immersion is a technique used to increase the resolving power of a microscope. This is achieved by immersing both the objective lens and the specimen in a transparent oil of high refractive index, thereby increasing the numerical aperture of the objective lens.
Nikitich [7]3 years ago
5 0

Answer:

When one has a non-living specimen that is no thicker than a few micrometers.

Explanation:

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An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct? *
arlik [135]

Answer:

the third one is correct

explanation

because atomic number and proton &electron number is same . neutron number is solved as atomic mass minus atomic number ( N=atomic mass - atomic number)

4 0
2 years ago
Gluconeogenesis, the formation of glucose from fats and proteins, is due to the action of ________. a. insulin b. cortisol c. al
Firlakuza [10]
The answer: b. Cortisol
6 0
3 years ago
Why only female mosquito is responsible for the transfer of disease?​
Sphinxa [80]

Explanation:

Issun Sengeki... Messatsu!

Alike of what the other guy said, only the female mosquito sucks blood.

Being that this is true, the mosquito(s) could have been in any environment. They could carry diseases and illnesses. On top of that, they can carry microscopic organism, unlike diseases, that can cause infections.

5 0
4 years ago
Lila is a track and field athlete. She must complete four laps around a circular track. The track itself measures 400 meters fro
tekilochka [14]

Answer: Her speed is 4.4 m/s, and her velocity is 0 m/s.

Explanation:

Formulae :\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}

\text{Velocity}=\dfrac{\text{Displacement}}{\text{Time}}

Given: Length of track start to finish=  400 meters

After completing its 4 laps, total distance covered = 400 × 4 = 1600 meters

Time taken by Lila =   6 minutes

= 6 × 60 seconds      [There are 60 seconds in 1 minute.]

= 360 seconds  

Then, \text{Speed}=\dfrac{1600}{360}=\dfrac{40}{9}m/s

= 4.44\ m/s

But from start to finish displacement = 0 m   [displacement is the shortest distance between starting point to the finishing point]

So, \text{Velocity}=\dfrac0{360}=0\ m/s

Hence, Her speed is 4.4 m/s, and her velocity is 0 m/s.

8 0
3 years ago
Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why?
irina [24]

Answer:

They have the same DNA because they are all part of the same organism, but they look and act different because they have different jobs and uses.

Explanation:

3 0
3 years ago
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