1. John observed bacteria at 100X under the oil immersion and then decided to go back to 40X

objective by raising the oil objective a little to avoid the damage to objective lens. Critique his

technique.

Please

Answers

Answer 1

Answer:

The observed image will not be sharp

Explanation:

When 100x microscope objective lens is being used, light refraction in the air is enough high to produce image alterations. Image distortions can be minimized by immersion oil because this liquid has a higher refractive index than air. However, light refraction is not usually noticeable when using 4x, 10x and 40x objective lenses. Moreover, this image will not be sharp after putting oil on the slide and going back to the 40x objective, it is for that reason that the 40x is called 'high dry' lens. In consequence, it is required to clean the immersion oil off the 40x objective. In general, it is required to  to remove the oil and refocus off the slide and lens immediately after oil immersion (it can be done by using an oil-soluble solvent).


Related Questions

A gene carries the _________ for a trait.

Answers

Answer:

A gene carries the information for a trait.

Explanation:

Genes carry the information that determines your traits (say: trates), which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes.

A gene carries the information for a trait.

What is gene?

The fundamental structural and operational component of heredity is a gene. DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins. Many genes do not, however, code for proteins.

A few hundred DNA bases to more than 2 million bases make up a gene in a human. Humans are thought to have between 20,000 and 25,000 genes, according to the Human Genome Project, an international research project that aimed to decipher the human genome's sequence and catalog its genes.

Every gene is present in two copies, one from each parent, in every individual. The majority of a person's genes are the same in all persons, but a tiny fraction (less than 1% of the total) are slightly different.

Therefore, A gene carries the information for a trait.

To learn more about gene, refer to the link:

https://brainly.com/question/8832859

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. Which of the following is used to avoid bias in a clinical trial
A) Data manipulation
B) Unfair prejudice
C) Personal interest
D) Double-blind testing

Answers

Answer:

D.

Explanation:

Whenever any clinical trail is conducted then the complete process is kept unbaised. Double blind testing can be defined as an experiment in which neither the researcher nor the person who is getting placebo and who is getting treatment knows. This is done in the clinical trials to keep the whole process unbaised.

Determine if the following statement is TRUE or FALSE:
The boiling point is the same temperature as the condensation point.

Answers

Answer:

False

Explanation:

condensation points is the complete opposite of boiling points. Condensation point is when its is so cold that water goes from a gas to a liquid and boiling points is when water goes from liquid to gas because it is so hot. Hope this help! -3-

What is an ion pump??

Answers

Answer:

Active transporters or ion pumps are transporters that convert energy from various sources—including adenosine triphosphate (ATP), sunlight, and other redox reactions—to potential energy by pumping an ion up its concentration gradient.

Explanation:

HELP PLEASE ITS TIMED

Answers

Question 3 it’s A
Question 5 it’s C
Question 4 it’s C

Which of the following is a product of photosynthesis?
protein
fats
nucleic acids
glucose

Answers

Answer:

glucose

Explanation:

Answer:

D glucose is the answer

How has Earth changed during our current era?
A. Dinosaurs became the dominant life form on Earth.
B. Dense forests developed.
C. The oceans formed from water vapor in the atmosphere.
D. Earth cooled enough to form solid rock.

Answers

ANSWER

THESE ARE SOME DIFFERENT ANSWERS

1. the climate has cooled and has became less humid

2.  Grass started growing across the world.

 

3.  the dense forest has developed

Explanation:

Dense forests started to develop during our current era  is how the earth has shown changes.

What is Forest?

This is defined as the area of land which is dominated by trees and serves as inhabitants for some organisms in the ecosystem.

With time, the earth changed by the forests becoming denser when compared to previous eras.

Read more about Forest here https://brainly.com/question/24518939

Which of the following processes play a role in introducing both water and carbon in the earth's cycles? A) photosynthesis and respiration B) condensation and nitrogen fixation C) burning of fossil fuels and forest fires D) desertification and condensation​

Answers

Answer:

A) photosynthesis and respiration

Explanation:

volcanic eruptions can affect climate by

Answers

Answer:

The gases and dust particles thrown into the atmosphere during volcanic eruptions have influences on climate. Most of the particles spewed from volcanoes cool the planet by shading incoming solar radiation. The cooling effect can last for months to years depending on the characteristics of the eruption.

Hope this helped, have a good day

Answer:

Volcanoes can impact climate change. During major explosive eruptions huge amounts of volcanic gas, aerosol droplets, and ash are injected into the stratosphere. Injected ash falls rapidly from the stratosphere -- most of it is removed within several days to weeks -- and has little impact on climate change

Explanation:

A farmer has decided to dig an artesian well into the unconfined aquifer below his crops.
However, water does not fill his well. Why isn't his well working?

Answers

Answer:

Explanation:

An artesian well needs the pressure of a confined aquifer.

Answer:

An Artesian well needs the pressure of a confined aquifer.

Explanation:

yes I took the test ,

The basic principle on which Artesian well is working is actually the 'pressure', hence need the pressure to get water from confined aquifer.

What are the majior factors that determine aquatic biomes are

Answers

JAHSHSBNABSBSBSBSBBSBSHWJAHDBSHSJJS

Which of the following explains why the Multiple-Use Sustained-Yield Act was necessary?
O Increased demand for lumber posed a threat to the nation's forests.
O Public Interest in public forests had declined and needed to be raised.
O Clear-cutting of forests was deemed important to provide for residential areas.
o Forests being opened to Industries led to too great a depletion on many resources.

Answers

Forest being opened to industries led to too great a depletion on many resources

Part F
What other factors did you modify for BEE? Why do you think you need to consider these factors with caloric intake?

Answers

Answer:

The activity factor was modified. Ambulating indicates that the person is active. Even small activities require energy. So, people who can walk around and aren’t bedridden expend more calories than people who need to be on bedrest all day. Also, when the stress factor was changed to severe infection, the caloric requirement increased. This increase is probably because the immune system requires more energy to fight off the infection

hope this helps

Answer:

The activity factor was modified. Ambulating indicates that the person is active. Even small activities require energy. So, people who can walk around and aren’t bedridden expend more calories than people who need to be on bedrest all day. Also, when the stress factor was changed to severe infection, the caloric requirement increased. This increase is probably because the immune system requires more energy to fight off the infection.

Explanation:

This is the sample answer for edmentum, so you might want to change up the words a bit :)

Referring to the image above, what are the abiotic factors in this image?
A
Water, Plants, and Birds
B
Birds and Plants
С
Soil, Plants, and Birds
D
Water, Sunlight, Soil, and Air

Answers

Answer:

Water, Sunlight, Soil, and Air

Explanation:

Abiotic factors are the non-living components of an ecosystem. These are physical factors, such as water, sunlight, soil, and air.

In contrast, biotic factors are the living components and include birds and plants.

The way the biotic and abiotic factors interact with one another forms the ecosystem. The biotic factors rely on the abiotic factors to sustain their life.


5. The image above is an example of which boundary?
a. Transform boundary
b. Convergent boundary
Divergent boundary
d. All of the above

Answers

Answer:

Divergent

Explanation:

Answer:

Im smart so the answer is "blah blah blah" saying the correct right answer

Explanation:

Which color of light is reflected by a white t-shirt

Answers

Answer:

All of the colors are being reflected

Explanation:

Question 1
Which clade of organisms is characterized as containing many extremophilic microbes?
А
archaea
B
eukaryotes
С
fungi
D
plants

Answers

Answer:

The answer is A.) Archaea.

The clade of organisms characterized as containing many extremophilic microbes is archea. The correct option is A.

What are archaea?

A class of microbes known as archaea is related to yet evolutionary separate from bacteria. Numerous archaea have been discovered to survive in harsh conditions, such as high pressures, salt concentrations, or temperatures.

Extremophiles are the name given to these kinds of creatures. Single-celled microbes called archaea have a similar structure to bacteria. They make up the third domain of life and are unique from bacteria and eukaryotes in terms of evolution. Archaea are obligate anaerobes that exist in low-oxygen settings (e.g., water, soil).

Therefore, the correct option is A, archaea regarding the extremophile microbes.

To learn more about archaea, refer to the link:

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name some renewable energy and nonrenewable energy

Answers

Answer:

Renewable resources include timber, wind, and solar while nonrenewable resources include coal and natural gas.

Which four abiotic factors make up climate?

temperature, moisture, sunlight, wind.

sunlight, water, biotic factors, the lithosphere.

the atmosphere, rain, light, organisms.

weather, plant life, biotic factors, water.​

Answers

Answer:

temperature, moisture, sunlight, wind

Explanation:

Answer:

Tempature, Moisture, Sunlight, Wind.

Explanation:

I know this because i had a quiz with this question.

I hope that this helped! Remember Stay safe and Stay smart!!!

the widows peak that is seen in some people is an example of what type of trait?
A. single-gene
B. polygenic
B. abnormal

Answers

Answer:

A. single-gene

Explanation:

It is controlled by a single gene that has two alleles. The allele for a widow's peak is dominant over the allele for a hairline with no peak.

the girl was observing a slide of muscle under microscope identified the muscle of striated on the basis of​

Answers

The cells will be branched , multi nucleate and will contain bands of light and dark color so the answer is C

Answer:

I think ur and is C. and sorry, I got late

Respiration eliminates excess _______ from the body.

A) carbon dioxide
B)Oxygen
C)alveoli
D)pleura

Answers

Answer:

Carbondioxide.

Explanation:

...............

Answer:

A

Explanation:

This is because the body inhales oxygen and exhales carbon-dioxide through the process of respiration

A 80 kg patient needs a medication x in the amount of 0.25 mg/kg/day.The medication comes in a liquid solution of 50 mg for every 10ml.How many ml of this solution will this patient need in a day

Answers

Answer:

i will give you ur points back but i need these points to do a question but i will give 20 back

please help What is used to process fuel in cellular respiration?

Answers

Answer: Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved.

Explanation:

What are the 3 main pros and 3 main cons of climate change ? and explain why they are a pros and a cons.

Answers

Okay here you go. The cons to climate change would be anything negative. Soooo
1. Trauma from floods
2. Droughts
3. Heat Waves
4. More heat = longer allergy seasons and more respiratory diseases.

The pros to climate change would include anything positive. Soooo
1. Fewer winter deaths
2. Low energy costs
3. Better agricultural yields
4. Fewer droughts.

Here is your conclusion.
Climate change may have a couple of pros but overall it’s terrible and we don’t want it to happen. It’s dangerous and could end the world. We need to take care of our earth and it’s as simple as not littering. Climate change is bad and just about every living thing would go extinct. Aka animals and humans.

Does Iodine have cations or anions? PLEASE THIS IS REALLY HARD?!

Answers

Answer: Iodine have anions

Pls can I get the answer please !

Answers

Answer:

Proteins made by free-floating ribosome's remain in that cell: whereas, proteins that travel through the endomembrane system leave by secretory vesicles.

Explanation:

A free-floating ribosome creates proteins within cells, but unlike normal ribosomes, this protein is left to float freely in the cell’s cytosol.

Furthermore, proteins that are synthesized in the rough endoplasmic reticulum will most likely be secreted into the extracellular environment.

I would like to apologize in advance if my answer was incorrect.

It is the 3rd one.. I hope it helps!

Clear selectic
What is habitat destruction?
O Humans find already cleared forests and decide to build a small village
Humans build up the land after a natural disaster
Humans eliminate some wildlife habitats/places where animals live
AL

Answers

Habitat destruction :

Habitat destruction is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or die, thereby reducing biodiversity and species abundance.

Question 8
6.25 pts
Which of the following is NOT a reason for why nitrogen is important to life on Earth?
a.Nitrogen is used to make organic matter, including proteins.
b.Consumers obtain nitrogen into their bodies by eating organisms that contain nitrogen, such
as plants,
O All of these are important to life.
Nitrogen is a necessary nutrient for plants.
Next >

Answers

Answer:

O . All of these are important to life

what is the equation for photosynthesis? why is it important for the plants to have both cellular respiration and photosynthesis(think about the equations)​

Answers

Answer:

The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.

Photosynthesis produces the oxygen to replenish oxygen that is used up by living organisms during respiration. Carbon dioxide produced during respiration is one of the reactants plants need to perform photosynthesis. Photosynthesis and cellular respiration are both part of a mutually beneficial relationship.

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