What is the basic unit of length, volume, mass, and temperature in the metric system?

Answers

Answer 1

Answer: the baisic units of volume mass and temperature in the metric unit system are called SI units. These are the baisic set from which all other SI units are derived.

Answer 2

Answer: In the metric system, the basic unit of length, volume, mass, and temperature are:

length: meter
volume: cubic meter
mass: grams
temperature: celsius

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Why is it important to sequence your plasmid after purifying it?

Answers

Here is my suggestion. ALWAYS you digest a vector you should do a gel-purification step. Some people will say that they don't do it because it's a waste of time and that is ok, however, if you do it you are practicing good molecular biology as defined by Sambrook&Maniatis, and these guys knew something about it. Therefore, I will encourage you to do this step as often as you can, this will ensure you have no traces of undigested vector that will interfere during your transformation step (e.g. false positive) and consequently save you time later. The best way to save time is to do it right. You also want to get rid of buffers and ions that may (or may not) interfere with your phosphatase steps and have a clear start too. The later is not so critical though, as most reagents are now quite compatible with each other as well as between companies, which is great. Then, after phosphatase treatment the cleaning step depends on two things: if you used CIP (NEB), this enzyme you MUST gel-purify (recommended) or use a kit to get rid of the CIP that tightly binds to the end of your DNA and cannot be heat inactivated. If you used TSAP (Promega) 0r any other thermosensitive phosphatase, then you can heat inactivate it. The next thing to take into account is to check the buffer compatibilities between your recently 'phosphatased' vector, your digested construct and your ligation buffer. Most of the T4 DNA ligase in the market are compatible with any of the buffers for restrictions and phosphatase. For your Insert in the experimental setting you have provided, I believe you can skip it.

The alleles for eye color in fruit flies involves one allele that might contain the sequence CCAT. Assume that this allele produces red eyes in a fruit fly, because the allele produces a protein that makes red pigment. Assume that another allele of this gene has a slightly different sequence in the middle: CAAT, instead of CCAT.Which of the statements below is true about the alleles for eye color in fruit flies?

Which of the statements below is true about the alleles for eye color in fruit flies?

A)
The alleles for eye color produce the same phenotype.

B)
The small change in the DNA sequence causes the allele to produce a different protein, resulting in the production of white eyes instead of red eyes in the fruit fly.

C)
Changes in the sequence of DNA bases in a gene do not contribute to genetic variation in the fruit fly population

Answers

Answer:

The correct answer would be B) The small change in the DNA sequence causes the allele to produce a different protein, resulting in the production of white eyes instead of red eyes in the fruit fly.

The amino acid sequence of any protein is determined by the codon sequence of the mRNA which is in turn determined by the nucleotide sequence of the DNA.

Thus, if the nucleotide sequence of the DNA is changed, it will result in the change of amino acid sequence of the protein.

It may result in the change of the structure as well as the function of the protein.

Thus, if the sequence in the gene is changed slightly, it would not result in the production of protein required for a red color trait.

Hence, the eye color of the fruit fly would change to white.

I'm quite sure answer B is correct :)

In scientific notation, the number 39,940,000,000 becomes

Answers

Answer:

In scientific notation, the number 39,940,000,000 becomes $3.994 * 10^(10)$

Explanation:

Scientific notation is a way to represent a long numerical value in a short form.

The standard way to represent a number in scientific notation form includes -

Some power of 10 multiplied by the initial number between 0 to 10

The given number is 39,940,000,000

This can be written as

$= 3.994 * 10^(10)\n= 3.99 * 10^(10)$

3.994 x 10^10 since you move the decimal place 10 points

Gender stratification refers to the ranking of males and females according to their access to power, property, and prestige based on their sex.True
False

Answers

Gender stratification refers to the ranking of males and females according to their access to power, property, and prestige based on their sex. false

Transpiration is the uptake of water into plants.Which of these is not a recognized class of plant hormone?

True
False

Answers

the answer is false. :)

The first vertebrates appeared in which period?a. Cambrian
b. Ordovician
c. Silurian
d. Devonian

Answers

The first vertebrates appeared in the Paleozoic Era, specifically the Cambrian period. The vertebrates were jawless fish with backbones made out of cartilages. It was thought that the first fishes evolved during this period. The correct answer to this question is letter "A. Cambrian". I hope this helps.

Answer:

The answer is Cambrian Hopefully this helps any T4L students!

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