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2 years ago

Explain how to focus a microscope using the high power lens. Include any safety issues you need to be aware of.

2 answers:

5 0

You would have to try on order to hurt yourself. Assuming you did the proper procedures Before and the specimen is fully in sight on the x and y axis and height is the only other thing to look at, then grab the fine adjustment knob ( the smaller coarse adjustment knob), and move it to the desired height. If the specimen starts to get blurry, turn the other way. This is a lot easier if your hand doesn’t move a lot when being held still

Alex Ar [27]2 years ago

4 0

Answer:

To focus a microscope using a high power lens one should follow the following steps:

1. Place the slide containing the sample onto the stage

2. Turn the turret and fix the high power lens into its position

3. focus the slide from the eyepiece or objective lens.

4. adjust the stage and focus the slide with the focus knob.

The safety precaution one must be aware of is that while focusing the slide, one must turn the knob in a way that it should not crack the slide as it will add glass and dust to the lens.

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Ms. Monahan puts gasoline in her car and drives it home. What energy change has occurred? (SC.7.P.11.2) A.Burning gasoline has c

tamaranim1 [39]

Answer:

Explanation:

I hope this helps. Sorry if i'm wrong.

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2 years ago

In a population of tree frogs, the allele that causes yellow eyes (Y) is dominant over the allele that causes orange eyes (y). I

Alex787 [66]

Allele that causes yellow eyes (Y) is dominant over the allele that causes orange eyes (y)

Y = 85% = 0.85 and

y = 100% - 85% = 15% = 0.15

f(y) = square root of y = √y = √0.15 = 0.387

frequency of the allele that causes orange eyes = 0.387

Once we know the value of y, Y + y = 1

Putting the value of y, we get

Y = 1 – 0.387

<span>Frequency of the dominant allele that causes yellow eyes = 0.61</span>

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2 years ago

James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he

uysha [10]

He is making a plant cell since the cell walls are box shaped, the balloon would be the large vacuole which takes up a lot of space in the cell, the marbles would be the ribosomes.

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2 years ago

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A biologist at World University used Procedure IV to conduct an additional study and found the sequence following below. Using y

Nady [450]

Answer:

Valine-Leucine-Proline-Lysine-Histidine

Explanation:

The central dogma of biology is the process by which DNA is used to synthesize RNA and subsequently amino acid sequence (PROTEIN). The processes of transcription and translation is used in gene expression. Transcription is the process whereby the information encoded in a DNA molecule is used to synthesize a mRNA molecule. Transcription is catalyzed by RNA polymerase enzyme, which uses complementary base pairing rule i.e Adenine(A)-Thymine(T), Guanine(G)-Cytosine(C) pairing.

N.B: Thymine is replaced by Uracil in the mRNA

For the above DNA sequence: CAC GAC GGA TTC GTA, the mRNA sequence will be: GUG CUG CCU AAG CAU

Translation is the second process of gene expression which involves the synthesis of an amino acid sequence from an mRNA molecule. The mRNA is read in a group of three nucleotides called CODON. Each codon specifies an amino acid (see attached image for genetic code)

Based on the attached genetic code, an mRNA sequence: GUG CUG CCU AAG CAU will encode an amino acid sequence: Valine(Val) - Leucine (Leu) -Proline (Pro) -Lysine (Lys) - Histidine (His).

GUG specifies Valine amino acid

CUG specifies Leucine amino acid

CCU specifies Proline amino acid

AAG specifies Lysine amino acid

CAU specifies Histidine amino acid

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2 years ago

The process whereby the binding of antibodies to antigens causes rbcs to clump is called ________.

labwork [276]

The process whereby the binding of antibodies to antigens causes RBCs to clump is called: agglutination.

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2 years ago