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const2013 [10]
3 years ago
5

What is in error in dna called

Biology
1 answer:
Musya8 [376]3 years ago
3 0

Errors in DNA are called mutations.

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9. Bacterial exotoxins can be described as: a. Poisons that bacteria discharge outside the body of their host.
Dovator [93]

Answer:

C

Dangerous substances secreted by bacteria as they grow.

The exotoxins can also cause damage to the host by destroying cells.

4 0
4 years ago
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.

5 0
4 years ago
How does an echinoderm use its tube feet?
NeX [460]

Answer:

Echinoderms use its tube feet for "<u>movement, respiration and taking food".</u>

Explanation:

Tube Feet are tiny tube like projections on oral side of echinoderms. They use it for movement, food and respiration. Echinoderms also use them to stick the ocean floor and move at a leisurely pace.

5 0
4 years ago
Read 2 more answers
In cartilage, proteoglycans form large complexes by attaching to:_____ a. laminin. b. hyaluronate. c. elastin. d. collagen. e. g
andre [41]

Answer: Option E.

glycosaminoglycans

Explanation:

Proteoglycans are core proteins that are attached to glycosaminoglycans chains via covalent bond because

glycosaminoglycans consist of repeating disaccharide units composed of an N-acetylated or N-sulfated hexosamine and either a uronic acid or galactose . They are found in connective tissues and cell matrix of animal cells.

8 0
3 years ago
What are the Amino acids of the mutated DNA sequence: TAC ATC TTG GCG ACG ACT
Natali5045456 [20]

Answer:

Tyr Ile Leu Ala Thr Thr

Explanation:

In a DNA sequence, a pair of three bases form a codon that codes one particular amino acid in the protein. Proteins are consist of  20 amino acids and these amino acids are coded by a pair of three bases.  

There are four bases in a DNA - Thymine (T), Adenine(A), Guanine(G) and Cytosine(C).

The given mutated DNA sequence will also code for some amino acid, that is as follows:

TAC - Tyr (Tyrosine)

ATC - Ile (Isoleucine)

TTG -  Leu (Leucine)

GCG - Ala (Alanine)

ACG - Thr (Threonine)

ACT - Thr (Threonine)

Thus, The mutated DNA sequence  TAC ATC TTG GCG ACG ACT codes for Tyr Ile Leu Ala Thr Thr.

6 0
3 years ago
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