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AlladinOne [14]
3 years ago
13

Examination of a cell by transmission electron microscopy reveals a high density of ribosomes in the cytoplasm. This observation

suggests that this cell is actively producing large amounts of which of the following molecules? A.Polysaccharides
B.Proteins
C.Lipids
D.Nucleic acids
Chemistry
1 answer:
True [87]3 years ago
3 0

Answer:

The answer is the B. Proteins

Explanation:

It is known that Ribosomes are the factory to synthesize proteins. This is their function.  In cell zones where ribosomes are abundant, proteins are actively produced

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If an atom with a mass of 47 amu has 22 neutrons, what atom is it?
LenaWriter [7]

Answer:

Manganese

Explanation:

At Mass - No neutrons = Atomic Number = #protons in nucleus

47 - 22 = 25 => At. No. 25 is Manganese (Mn)

7 0
3 years ago
\The specific heat of aluminum is 0.21 cal g°C . How much heat is released when a 10 gram piece of aluminum foil is taken out of
atroni [7]

<u>Answer: </u>The amount of heat released is 84 calories.

<u>Explanation: </u>

The equation used to calculate the amount of heat released or absorbed, we use the equation:

Q= m\times c\times \Delta T

where,

Q = heat gained  or released = ? Cal

m = mass of the substance = 10g

c = specific heat of aluminium = 0.21 Cal/g ° C

Putting values in above equation, we get:

\Delta T={\text{Change in temperature}}=(10-50)^oC=-40^oC  

Q=10g\times 0.21Cal/g^oC\times-40^oC

Q = -84 Calories

Hence, the amount of heat released is 84 calories.

8 0
4 years ago
Two liters of hydrogen gas are stored at a
Tju [1.3M]

Answer:

the volume will expand

Explanation:

gas under pressure contracts, and expands with a lesser pressure

6 0
3 years ago
What does homogeneous mixture of elements
photoshop1234 [79]

a homogeneous mixture is a mixture that appears to be one thing. for example air would be one.

3 0
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Analyze the map. How would the temperature on the east coast of South America (near Brazil) differ from the west coast of South
hjlf

Answer:   Uruguay on north on the Atlantic side, Chile and north on the Pacific side. The higher up you go the warmer, so Brazil, Ecuador, and Colombia will be the warmest especially in terms of water temperature.

5 0
3 years ago
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