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horsena [70]
3 years ago
6

How are soil and plant taxonomy the same

Biology
1 answer:
Lerok [7]3 years ago
6 0
They are both used to benefits plants growth process.
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What is the difference between weather and climate
Illusion [34]
The measure of time. Weather is a short amount of time and climate is how the atmosphere behaves over a long period of time.
8 0
3 years ago
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Which equation represents the formula for the speed of a wave?
Verizon [17]

hello there,

Which equation represents the formula for the speed of a wave?

A.

speed = wave length ÷ wave period

hope this help

3 0
3 years ago
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What is the medullary index for an organism that has a medulla width of 2cm and hair shaft width 4cm? Is this organism human or
navik [9.2K]

Answer:

a. 1/2 b. The organism is an animal

Explanation:

a. What is the medullary index for an organism that has a medulla width of 2cm and hair shaft width 4cm?

Medullary index = diameter of medulla/diameter of hair.

Given that diameter of medulla = medulla width = 2cm and diameter of hair = hair shaft width = 4cm,

Medullary index = diameter of medulla/diameter of hair = 2 cm/4cm = 1/2

b. Is this organism human or animal?

Since the medullary index = 1/2 > 1/3 (if it is ≤ 1/3 it is human hair and ≥ 1/2 it is animal hair), it is animal hair. So, the organism is an animal.

4 0
3 years ago
In gel electrophoresis DNA molecules migrate from _____ to _____ ends of the gel.
masha68 [24]

Answer:

b, negative ... positive

Explanation:

Gel electrophoresis is  a method used in molecular biology for DNA analysis. This method includes the separation of DNA fragments through the gel according to their size or shape under the influence of aplid electric current. Since the fragments of DNA are negatively charged, they will move from negative to positive end.

Small fragments will move faster than larger ones.

One of the major source of error is contamination of the DNA sample. This refers to the presence of foreign DNA in the sample of interest. As a consequence, the gel will have more bands.

Another errors might appear as a result of wrong concentration of the gel, wrong buffer pH, high/low concentration of dye etc.

8 0
3 years ago
Pancreatic cells, which secrete a large amount of digestive enzymes, are labeled with radioactive leucine and then chased for se
stiv31 [10]

Answer:

On the exterior of the cell.

Explanation:

The black spots as mentioned in the given case would appear on the exterior of the cell after three hours, which suggests that the proteins or the enzymes had been discharged from the pancreatic cell. The mentioned method of labeling and then chasing the component is known as a pulse-chase experiment.  

In this experiment, the labeled compounds are used to follow the dynamics of cellular pathways and procedures. The molecules in a cell get produced and degraded spontaneously at various rates. These changes in the localization of the molecule and its expression levels with time can be determined by exposing or pulsing cells to a labeled compound.  

After this the cells are exposed sequentially to the same compound unlabeled, the process is termed as the chase. The compounds are generally labeled with fluorescent dyes or radioisotopes.  

3 0
3 years ago
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