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Makovka662 [10]
3 years ago
10

LD50 is used to express _____.

Biology
2 answers:
erma4kov [3.2K]3 years ago
6 0

Answer:

The answer is option C.

Explanation:

LD50 remains for Lethal Dose 50. This is the standard proportion of the poisonous quality of a material, which will kill half of the example populace of a specific guinea pig in a characterized day and age, when they are presented to the material.

dlinn [17]3 years ago
4 0
LD50 is used to express TOXICITY OF TOXINS AND POISONS.
LD50 stands for Lethal Dose 50. This is the standard measure of the toxicity of a material, which will kill half of the sample population of a particular test animal in a defined time period, when they are exposed to the material.
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A protein is discovered that is responsible for retaining youthful elasticity in the skin. A biotechnology company wants to find
irina1246 [14]

Answer:

The correct answer would be 2,70,000 nucleotide long gene.

The gene refers to the protein coding sequence of the (deoxyribonucleic acid) DNA.

The nucleotide sequence of a gene corresponds to the codon sequence if mRNA. The codon sequence of mRNA then codes for the amino acid sequence of the protein.

The codon refers to the set of three nucleotide which codes for a specific amino acid. For example, CAG codes for glutamine, AUG codes for methionine et cetera.

So, if the polypeptide chain consists of 90,000 amino acids then it must contain 90,000 x 3 nucleotides which are equal to 2,70,000 nucleotides.

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The most important reason for food handlers to understand and apply food safety knowledge is to prevent the spread of illnesses through food.
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Read 2 more answers
Adenine is the last nucleotide at the 3' end of one strand of DNA. It is base-paired with thymine on the other DNA strand. Which
Jlenok [28]

Answer:

The two nucleotides are located on DNA strands that are parallel to each other

Explanation:

Deoxyribonucleic acid, commonly known as DNA, is one of the two types of nucleic acids. It is a molecule composed of a nitrogenous base, pentose sugar and a phosphate group. According to the information given in this question, Adenine is the last nucleotide at the 3' end of one strand of DNA. The following are factual about the nucleotide;

- Since DNA is a double-stranded molecule, the Adenine nucleotide will be base-paired with Thymine nucleotide (complementary base pairing) on the other DNA strand.

- Since complementary DNA strands are opposite to one another, this means that if the adenine has an unlinked 3' hydroxyl group, then the thymine must have an unlinked 5' phosphate group.

- Nucleotides in a DNA strand are joined to one another via a covalent bond called PHOSPHODIESTER BOND. Hence, the adenine and the thymine are each bonded to the previous nucleotide in the strand by a phosphodiester bond.

- In the complementary base pairing between two nucleotide bases, there are two hydrogen bonds between the adenine and thymine nitrogenous bases i.e. A=T.

- DNA strands that make up a molecule are complementary and opposite to one another, hence, they are said to be ANTIPARALLEL.

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3 years ago
How does the accuracy of a calculation depend on the number of significant figures in the measurement used to do the calculation
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In general, a calculated answer cannot be more precise than the least precise measurement from which it was calculated

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