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3 years ago

Why is the inner lining of the bronchiole folded?

1 answer:

5 0

The bronchioles<span> or bronchioli are the passageways by which air passes through the nose or ... The</span>inner lining<span> (lamina propria) of these </span>bronchioles<span> is thin with no glands present, and is surrounded by a layer of smooth muscle.</span>

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1. What is the total magnification of an object if the ocular lens magnification is 20x and the objective lens magnification is

V125BC [204]

1. Answer: 900x

A typical microscope has two lens: ocular lens which located near the eye, and objective lens which located near the object. The image will undergo magnification of both lens. The total magnification of the object would be the product of both lens multiplication, not the sum. The multiplication will be: 20x * 45x= 900x

total mag= ocular * object

total mag= 20x * 45x

total mag= 900x

2. Answer: 100x

The total magnification of the object would be the product of both lens multiplication. If the total magnification 1000x, that mean it was the product of ocular lens and objective lens. If ocular lens magnification is 10x, objective lens magnification would be:

total mag= ocular * object

1000x= 10x*object

object=1000x/ 10x=

object=100x

3. Answer: 0.2 mm

The area of the microscope that can be viewed by the eye should be the same. But since the magnification is different, the actual area that it represent will be different. Microscope with bigger magnification will have smaller diameter of the field of view(DFV). Remember that micrometer(μm) is 1/1000 of millimeter(mm). The DFV would be:500 μm/ ( 1000x/400x)= 200μm= 0.2 mm

4. Answer: 750μm

This question is similar to number 3 question. Remember that 1 millimeter(mm) equal to 1000 micrometer(μm) .

The DFV of a 10x objective lens is 3 mm. Then the DFV of 40x lens would be:

DFV2= DFV1/ (mag1/mag2)

DFV2= 3mm/ ( 40x/10x)= 0.75 mm= 750μm

5. Answer: 125μm x 37.5μm

The lens DFV of microscope from question 4 is 750μm, so the width and length of the area would be 750μm.

If 6 organisms could fit across the DFV if they were laid end-to-end, the length would be: 750μm/ 6 organism= 125μm

If 20 organism could fit is stacked side by-side, then the width would be: 750μm/ 20 organism= 37.5μm

6. Answer: 6mm

This question is similar to number 3 and number 4 question. Remember that 1 millimeter(mm) equal to 1000 micrometer(μm).

The DFV of a 100x objective lens is 1.5 mm. Then the DFV of 25x lens would be:

DFV2= DFV1/ (mag1/mag2)

DFV2= 1.5mm/ (100x/25x)= 6 mm

7.Using the 100x objective lens from question 6, you estimate 12 organisms could fit across the DFV if they were laid end-to-end and 30 could fit is stacked side-by-side. What is the length and width of this organism (in microns)?

Answer: 0.5mm x 0.2mm or 500μm x 200μm

The lens DFV of microscope from question 6 is 6 mm, so the width and length of the area would be 6 mm.

If 12 organisms could fit across the DFV if they were laid end-to-end, the length would be: 6mm/ 12 organism=0.5mm

If 30 organism could fit is stacked side by-side, then the width would be: 6mm/ 30 organism= 0.2mm

6 0

3 years ago

Students are studying the rate of yeast fermentation under different conditions. Glucose is a monosaccharide. Sucrose is a

Akimi4 [234]

Answer:

The correct option is B. Fermentation would occur at a similar rate to that of glucose.

Explanation:

Fermentation can be described as a process in which alcohol is released by using sugars. In fruit juices, fructose is present mainly to get the sweetness. It is used as a substitute for glucose because fructose is more sweeter than glucose. Both fructose and glucose are monosaccharides with the formula C6H12O6. The only difference is in the arrangement of molecules in the atoms of these compounds. Hence, the rate of fermentation would be same for these two sugars.

8 0

3 years ago

Pythagoras's Model has the sun in center of the universe.<br> True<br> False

Basile [38]

Answer:

i think its false, i checked wikipedia and it says that he thought the sun revolved around a "central fire"

Explanation:

5 0

3 years ago

Which portion of the nasal cavity is lined with sebaceous and sweat glands and numerous hair follicles?

Semmy [17]

Vestibule portion of the nasal cavity is lined with sebaceous and sweat glands and numerous hair follicles.

<h3>What is vestibule?</h3>

A vestibule is a tiny room that leads into a larger space, like a lobby, entrance hall, or hallway.
It serves as a place to wait, block the view of the bigger space, stop heat loss, provide space for storing outside clothing, etc.
A vestibule is something like the tiny space outside the main bank where you enter and where the ATM is stored.
A vestibule is, for instance, the middle cavity of the inner ear that connects to the eardrum.
A vestibule is a little opening or chamber at a canal's start.
The urinary meatus (urethral opening) and the vaginal opening both open into the vulvar vestibule, which is a portion of the vulva between the labia minora.

Learn more about vestibule here:

brainly.com/question/10757442

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7 0

1 year ago

Where does transcription take place in the cell

bixtya [17]

In a prokaryotic cell, transcription and translation are coupled; that is, translation begins while the mRNA is still being synthesized. In a eukaryotic cell, transcription occurs in the nucleus, and translation occurs in the cytoplasm.

Hope This Helps! Have A Nice Day!!

7 0

3 years ago