All categories

2 years ago

Why have scientist devised a system of comparative weights for atoms rather than using actual weights

Biology

1 answer:

tatuchka [14]2 years ago

5 0

Answer:

Because of multiple reasons:

Explanation:

Atoms are way too small to weigh.
They couldn't use weight, they would have to use mass.
Some atoms are free-floating, because they are the air.
If they even made a scale that measured each atom, it would also catch the air atoms as well, unless they had a vacuum chamber, but even then, no one can make a perfect vacuum, space is not even a perfect vacuum...

Hope this helps.

You might be interested in

The graph shows the populations of two species in a particular region over two decades. Based on the graph, what can you conclud

MArishka [77]

Answer:

Explanation:

yfddthsshmtdhrxjji

6 0

3 years ago

Brown coat color rabbits possess the dominant allele B, and white coat color rabbits possess the recessive allele b. If the freq

PolarNik [594]

Assuming Hardy-Weinberg equilbrium, we have

p + q = 1

where p = frequency of dominant allele and q = frequency of recessive allele. So

p = 1 - q = 1 - 0.04 = 0.96

Consequently we have

• p² = 0.9216 = frequency of hom ozygous domininant genotype

• pq = 0.0768 = frequency of heterozygous genotype

• q² = 0.0016 = frequency of hom ozygous recessive genotype

since

p² + 2pq + q² = 1

3 0

1 year ago

Read the procedure. What is the purpose of the bicarbonate that is dissolved in the water?

xxTIMURxx [149]

Answer:

Through this experiment we study the process of photosynthesis.

• In the begining the leaf disks's tissue has oxygen, this allows them to float.

• Then, in the experiment we infiltrate the leaf disks with a solution that has bicarbonate, and as a result their density changes (it increases) and so the leaf disks sink.

• Once the disks are on the bottom and we direct the light to them the process of photosynthesis starts, being the bicarbonate the source of carbon for the process.

• As we know a product of the photosynthesis proces is oxygen, so when it is released into the leaf disks the overall density changes again and the disks rise.

So as we can see, in this experiment the purpose of the bicarbonate is being the source of carbon for the process of photosynthesis that occurs in the leaf disks.

5 0

9 months ago

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

What group of protein regulates cell division in eukaryotes

meriva

The answer is mitosis.

5 0

3 years ago