Question
Asked Feb 8, 2019
3 views

The specimen that you are trying to find is very small and you cannot see it with scanning power. How can you reduce the search tome by finding the right place of focus?

check_circle

Expert Answer

Step 1

Microscopy is a field which involves using a microscope to view those specimens in enlarged size which are not even visible with the naked eye. Most common laboratory microscopes have two lens for focussing a specimen bearing glass slide placed on the stage. 

These two are Objective lens and Eye peice.

Step 2

Eye peice is the one which is closer to the eye of the viewer. It is usually of 10x magnification i.e. it magnifies the specimen by 10 times.

Objective lens is that which is closer to the specimen. There are three types of objective lens present in the microscope with different magnifying powers.  

  • 4x : It is one with smallest magnifying power. It is termed as scanning objective as it is used to scan the object overall.
  • 10x: It is that with low power. 
  • 40x: It is the highest power objective and is used to get minute details of the cell.

 

Step 3

Scanning objective is used for focussing the object. The object is placed on stage and then focussed on lowest power. It is because at this, depth of focus is maximum. 

If the specimen is not focussed, then the focus has to be adjusted by ...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Biology

Related Biology Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: What makes hypervariable region I (HVRI) within mtDNA useful for researchers studying continental pa...

A: A hypervariable region (HVR) refers to a site within the D loop of mitochondrial DNA (mtDNA) or the ...

question_answer

Q: Describe how the processes of within population change and speciation lead to diversification of org...

A: There are three main processes of change of population- birth rate, death rate and migration.The num...

question_answer

Q: 2. You have a population of 100 lizards. 25 are homozygous dominant for the long tail gene, and 65 a...

A: According to the Hardy-Weinberg equilibrium, the frequencies of the alleles and genotypes in a popul...

question_answer

Q: In what way does chlorophyll interact with light?

A: Chlorophyll is a pigment present in chloroplast. It is essential for carrying out photosynthesis. 

question_answer

Q: A 57 year old male presented to the Tulane Emergency department at 4:00 AM with the acute onset of r...

A: Given, a 57-year-old male presented with acute onset of right-sided facial drooping, speech slurring...

question_answer

Q: What era did Australopithecus afarensis evolve?

A: It is required to identify the era in which Australopithecus afarensis evolve.

question_answer

Q: What is an amnion?

A: The question asks about the amnion.

question_answer

Q: 2a. What is the adaptive advantage of functional compartmentalization in multicellular eukaryotes?

A: Eukaryotes are majorly multicellular animals and their cells exhibit division of labor. Eukaryotic c...

question_answer

Q: Can two populations have the same allele frequencies but different genotypes frequencies

A: Allele frequency is the measure of how much an allele is common in a given population. It is the rat...