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marusya05 [52]
3 years ago
7

A scanning electron microscope is a type of light microscopes that has more than one lens

Biology
1 answer:
timurjin [86]3 years ago
5 0

Answer:

true

Explanation:

the condenser lens is the size of the electron beam and the main objective lens is to focus the beam on the sample

so that scanning electron microscope have two projector lens

sorry if its not correct

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A scientist runs an SDS-PAGE experiment two separate times on a protein with a molecular weight of 200 kD. For the first experim
Delicious77 [7]

Answer:

This protein consists of 8 subunits of equal size linked by disulfide bonds

Explanation:

The sodium dodecyl sulfate-polyacrylamide gel (SDS-PAGE) is a technique widely used in molecular biology laboratories to separate proteins with molecular weights between 5 and 250 kDa. SDS is an anionic detergent used to denature proteins before electrophoresis. SDS can denature proteins by altering non-covalent bonds such as hydrogen, hydrophobic and ionic interactions, but they cannot cleave disulfide bonds. In this case, reducing agents (e.g.,  β-mercaptoethanol or dithiothreitol) have been used to cleave disulfide bonds.

3 0
3 years ago
Defend the statement found in controversy that foods, not supplements are the best and safest form of phytochemicals.
Anika [276]

Answer:

The easiest argument is the next one:

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And other thing is that phytochemicals in supplements comes so concentrated that your body will be overstimulated to take this phytochemicals and that changes your normal digestion, in the time it may looks good...but if you don't take supplements anymore, your body will feel the lost and the physical results would be awull.

8 0
3 years ago
What can easily pass through the cell membrane?
Grace [21]

Answer:

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i dont know what passive transport is but active transport goes against the concentration gradient so im guessing passive is the opposite and goes with the conc gradient

Explanation:

4 0
3 years ago
Explain how the animals and plants of a healthy ecosystem are organized and interact.
posledela
Because they all need one another to survive. flowers need bees to distribute their pollen. and some animals relly on plants for food. and plants relly on the sun to be healthy


-don’t forget to heart and mark as brainliest! thanks!
5 0
3 years ago
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Answer:

His acceleration was -1/5 m/s²

Explanation:

7 0
3 years ago
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