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lisov135 [29]
3 years ago
12

Select the five variations of the light microscope

Biology
1 answer:
mamaluj [8]3 years ago
6 0
The answers are: 
2. the dark field microscope
3. the phase contrast microscope
4. the fluorescence microscope
5. the polarizing light microscope
6. the bright field microscope 
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A researcher has performed a BLASTp search for a protein of interest. He identifies a globular protein that shares 30 percent of
Alex_Xolod [135]

Options are not provided in the question. The complete question is as following:

A researcher has performed a BLASTp search for a protein of interest. He identifies a globular protein that shares 30 percent of its amino acid sequence and positioning with his target protein. What can he conclude about the shape of his protein of interest?

a) It is also a globular protein.

b) It is a fibrous protein.

c) It has only a primary structure.

d) It demonstrates only pleated sheets as part of its structure.  

e) The researcher can conclude nothing about his protein of interest.

Answer:

a) It is also a globular protein.

Explanation:

Globular proteins are one of the common form of protein  (the other are fibrous, disordered, and membrane proteins) having spherical shape.

Protein-protein BLAST (blastp), This software returns the most related sequences of protein from the protein database defined by the user, provided a protein query.

So, the blastp has searched for globular protein.

Hence, the correct option is a.

6 0
3 years ago
Observation of Diffusion Rate in Relation to Cell Size
vesna_86 [32]

Explanation:

new cells rather than growing bigger. Why is this ?

There are two main reasons why cells divide rather than continuing to grow larger and larger: ... If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Cell Division. Cell division is the process by which cellular material is divided between two new daughter cells.

Why aren't you made of a few dozen, or a

few hundred cells, instead of trillions?

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.

Why don't single-celled organisms like amoebas and paramecia grow

as big as a human?     again The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

i belive this is just the introduction to the project but here

4 0
3 years ago
What does the CFTR protein transport?
Vedmedyk [2.9K]

Answer:

c. chlorine ions

Explanation:

5 0
3 years ago
Jane filled one transparent bottle and one brown bottle of the same capacity with pond water. She kept the first bottle in sunli
Setler [38]
<span>Jane's observation will be that in the transparent bottle, the algae and small plants present in the pond water release oxygen during photosynthesis, while in the dark bottle, photosynthesis doesn’t occur due to darkness. Therefore, oxygen in the transparent bottle is more than that in the dark bottle. In photosynthesis, photosynthesizing organisms, such are algae and small plants, use carbon dioxide and water and convert it into glucose and oxygen in the present of sunlight. Therefore, organisms in the transparent bottle can perform photosynthesis and consequently release oxygen. However, this is not the case with the dark bottle that cannot transmit the sunlight.</span>
3 0
3 years ago
Why is water colour less?
horsena [70]
Water means it is the mixture of hydrogen and oxygen. As we know that hydrogen is colourless as well as oxygen is also colourless gas.
So at last when hydrogen and oxygen reacts with one another and they form H2O means water. If both are colourless so their product will also be colourless. So water is seen colourless.
5 0
3 years ago
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