0
What else can I help you with?
Why should microscope light be dimmed when viewing living nearly transparent cells?
Human A&P Lab manual (cat version), N. Marieb, Pg. 346. "Place the slide on the stage, and locate the cells at the lowest power. You will probably want to dim the light with the iris diaphragm to provide more contrast for viewing the lightly stained cells. Furthermore, a wet mount will dry out quickly in bright light because a bright light source is hot." The answer I believe is 'to provide more contrast'
What requires more light a stained specimen slide or an unstained live specimen slide?
A stained specimen slide typically requires more light than an unstained live specimen slide. This is because the staining process can reduce the transparency of the specimen, making it harder for light to pass through and creating a need for more illumination to visualize details.
How are euchromatin and heterochromatin stained?
Euchromatin is loosely coiled DNA that is transcriptionally active. An increased amount of euchromatin indicates an active cell. Heterochromatin is tightly packed DNA that is transcriptionally innactive.
How can I explain why my eyes see different brightness levels in various lighting conditions?
Your eyes see different brightness levels in various lighting conditions because they adjust to let in more or less light. In bright light, your pupils get smaller to let in less light, and in dim light, they get bigger to let in more light. This helps your eyes adapt to different levels of brightness.
Some portions of chromosomes are condensed and DNA is not expressed these dark-stained areas are called?
These condensed regions are called heterochromatin. This tightly packed DNA is less accessible for gene expression compared to euchromatin, which is less condensed and more transcriptionally active. Heterochromatin plays a role in maintaining chromosome structure and gene regulation.
Do you need more or less light when viewing a stained preparation?
You typically need less light when viewing a stained preparation, as the stains used absorb or reflect light in specific ways that enhance contrast and visibility of cellular structures. Adjusting the light source to a lower intensity can help improve the clarity of the stained specimen.
Why should microscope light be dimmed when viewing living nearly transparent cells?
Human A&P Lab manual (cat version), N. Marieb, Pg. 346. "Place the slide on the stage, and locate the cells at the lowest power. You will probably want to dim the light with the iris diaphragm to provide more contrast for viewing the lightly stained cells. Furthermore, a wet mount will dry out quickly in bright light because a bright light source is hot." The answer I believe is 'to provide more contrast'
What requires more light a stained specimen slide or an unstained live specimen slide?
A stained specimen slide typically requires more light than an unstained live specimen slide. This is because the staining process can reduce the transparency of the specimen, making it harder for light to pass through and creating a need for more illumination to visualize details.
How many calories in Mount Royal Light Whiskey made by Seagrams?
Mount Royal Light Whisky has 97 calories per 1.5oz. It is now made by Sazerac. Check out mountroyallight.com for more info on the whisky that has 1/3 fewer calories and 1/3 less alcohol!
Do you need more or less light for a darker shadow?
More light
If a concave lens is thick then the light will diverge more or less?
The thicker the lance, the more light diverges.
If the refraction is large will it bend light more or less?
It will bend more.
Is Mount Shasta sleeping?
More or less. The US Geological Survey categorizes Mount Shasta as dormant; the last eruption was about 200 years ago.
Why were the stained glass windows removed at the Notre dame cathedral in the 18th century?
They were replaced by clear glass in order to let more light inside.
Do you weight more on less on the tope of Mount Everst or in the town?
There is a high chance that you would weigh less on the summit of Mount Everest than you would in town. To climb Mount Everest takes a lot of energy and you will burn a lot of calories, hence loose weight.
What will reflect light?
Any object will reflect light. Some more, some less.
Are visual receptors more or less sensitive in light adapted state?
Visual receptors are less sensitive in the light-adapted state. This is because when exposed to bright light, the photoreceptor cells become desensitized and require more light to respond.
