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levacccp [35]
3 years ago
15

2. Why should you never use the coarse adjustment knob on high power?

Biology
1 answer:
KIM [24]3 years ago
3 0

The coarse adjustment knob is used for large adjustments when focusing a microscope by the time ur at the high power ojective lens its lens would be close to the stage and using the course adjustment knob can cause the lens to  crack or brake the slide


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Drag the appropriate tRNAs to the binding sites on the ribosome to show the configuration immediately before a new peptide bond
diamong [38]

Note: Question is incomplete lacking figure. I have added figure with question and answer.

Answer:

E site will be empty as it is exit site for protein synthesis.

P site will have code AUA with three amino acids  because it is the site for peptide synthesis.

A site will have UCC code with one amino acid because its the code for serine synthesis. Moreover, A site is binding site for charged t-RNA molecules during protein synthesis.

4 0
3 years ago
Are species in the same family more or less closely related than species in the same class?
katrin [286]
The classification is in this order: Kingdom, Phylum, Class, Order, Family, Genus Species. 
The kingdom is the largest group, it contains the largest number of organisms who are the least related.
The species is the smallest group, it contains the least number of organisms who are closely related.
As you go down, from "Kingdom", species become more closely related.
So species in the same family are MORE closely related than species in the same class.
4 0
3 years ago
Which of the following tags should be used to retrieve information from a
Viefleur [7K]

Answer:

<em>The correct option is A. Nucleotide sequence, human, hemoglobin</em>

Explanation:

If the segment of the DNA for the human gene is known then it will be very easy to find the gene on a database. The tags which should be used will be the nucleotide sequence, where the known sequence shall be mentioned.

Then we will choose the tag for the organism which is humans in this case. Then we will select the tag for the protein which is made by the nucleotide sequence, which is protein in this case. Hence, option A is the correct answer.

4 0
3 years ago
When plants are stressed by dry conditions, they secrete the hormone abscisic acid (ABA) and in response the stomata close, even
dimaraw [331]

Answer:

C. K+ ions flow out the the guard cells and water flows out the cells.

Explanation:

The turgidity of the guard cells allows the opening and closing of the stomata. This is especially necessary when it comes to water conservation in plants. In order for the cells to become turgid or flaccid, there must be the influx and out ward movement of water via osmosis.

In order for this the occur the osmotic pressure of the cellular environment must change and this is done by changing the solute concentration.

The pumping in of K+ ions out the cell allows the solute concentration to decrease and this in turn encourages the movement of water across a concentration gradient through a semi-permiable membrane.

The water leaves the guard cells and they become flaccid. This causes the stomata to be covered.

4 0
3 years ago
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A coral reef is the product of tiny animals—invertebrates related to jellyfish. Inside the tissues of coral animals live microsc
slava [35]
It’s d. Warmer ocean temperatures but you also wrote that the answer is d in your question lol
8 0
3 years ago
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