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HACTEHA [7]
4 years ago
15

How does the use of a scanning electron microscope differ from that of a transmission electron microscope? A. A scanning electro

n microscope can produce only a two-dimensional black and white image, while a transmission electron microscope can produce a three-dimensional color image. B. A scanning electron microscope can be used to study live specimens, while a transmission electron microscope would harm the specimens that are being viewed C. A scanning electron microscope can be used to study the details of a specimen’s surface, while a transmission electron microscope can be used to study the internal structures of a cell. D. A scanning electron microscope can produce images of specimens prepared in liquid, while a transmission electron microscope requires all water to be removed from specimens first.
Biology
2 answers:
Step2247 [10]4 years ago
8 0

<span>D. A scanning electron microscope can produce images of specimens prepared in liquid, while a transmission electron microscope requires all water to be removed from specimens first.</span>
makkiz [27]4 years ago
7 0

Well, we know A is wrong because scanning electron microscope can produce a three-dimensional image. And B is wrong because both microscopes cant be used to study live specimens because of how strong they are so D is also wrong.

So your answer would be (C) or a scanning electron microscope can be used to study the details of a specimen’s surface, while a transmission electron microscope can be used to study the internal structures of a cell.

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True-breeding flies with singed bristles (s) and normal wings (L) were crossed to true-breeding flies with normal bristles (S) a
mina [271]

Answer:

The correct answer is -

Possible F2 offspring genotypes and phenotypes:

SsLl: normal bristle, normal wing

Ssll: normal bristle, vestigial wing

ssLl: singed bristle, normal wing

ssll: singed bristle, vestigial wing

Explanation:

In this case, the genes 's' and 'L' and genes 'S' and 'l' are linked, they will be passed on to the gamete together.

The cross would be as follows:

F1:

Parents: singed bristles and normal wings   x    normal bristles and vestigial wings

Genotype:          ssLL                                                          SSll

Gametes:             sL                                                             Sl

F1:                      SsLl ( normal bristles and normal wings )        

For F2,

Parents: normal bristles and normal wings    x   singed bristles and vestigial wings

Genotypes:            SsLl                                                         ssll

Gametes:                               SL, Sl, sL, sl

Cross:  

          SL        Sl         sL        sl

sl       SsLl     Ssll       ssLl      ssll

Thus the possible offspring will have -

SsLl: normal bristle, normal wing

Ssll: normal bristle, vestigial wing

ssLl: singed bristle, normal wing

ssll: singed bristle, vestigial wing

4 0
3 years ago
What type of mountain is most likely to form when plates with edges that have oceanic lithosphere collide?
bija089 [108]
A fault block mountain would form.

The two types of plates colliding would make them both rise up creating amountain that looks sort of looks like cards standing together.
6 0
4 years ago
In negative geotropism of shoots, auxin is redistributed to the ______ side of the cell, where the amyloplasts have accumulated,
Otrada [13]

Answer:

a. Lower

b. Stimulates

In negative geotropism of shoots, auxin is redistributed to the lower side of the cell, where the amyloplasts have accumulated, where it stimulates cell elongation.

Explanation:

Geotropism can be defined as the direction the various parts of a plant grows toward due to the stimulus which in this case is the force of gravity. Geotropism in plants can be negative or positive.

Negative geotropism occurs when the shoots of a plant grows upwards against the force of gravity.

5 0
4 years ago
Read 2 more answers
What is the difference between analogous and homologous structures?
Zolol [24]
Analogous structures have different evolutionary ancestries but have the same function. some types of structures are the wings of birds, bats and insects. Homologous structures are the opposite, they have similar ancestries and common traits but not the same function.
3 0
4 years ago
Read 2 more answers
Why does a tertiary have to eat so much to stay alive
Paraphin [41]

Answer:

Because there are losses in energy between levels, the population between levels also diminishes. With less energy, there are less creatures that can be supported by it, so the level with the least amount of creatures would be the tertiary consumers, while the level with the most organisms would the producers.

Explanation:

I hope that this helps ;)

7 0
3 years ago
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