Which of the following statements is false? _______________ help(s) proteins fol

Question

Which of the following statements is false?

_______________ help(s) proteins fold into their correct form.

Protein structure is important for proper function. How does a cell handle misfolded proteins?

___________ are infectious proteins that gained notoriety when they were implicated in brain infections, such as the popularly known mad cow disease.

What is the function of helicase?

A sequence of DNA is given as: TACCTAGCGTAACTAGCGATTATCCGC. What is the amino acid sequence resulting from the transcription and translation of this DNA sequence?

_______ serves as the translator in the process of protein production and carries specific amino acids to a ribosome.

Explanation / Answer

Answer:

1). a. Mutations are always harmful.

Explanation:

However not all mutations are harmful, there are very few number of mutations that actually can change the codes for a better functioning protein. In this case they will be beneficial.

2). a. Chaperone proteins

Explanation:

Proteins that facilitate the folding of other proteins are called molecular chaperones. They catalyze protein folding by assisting the self-assembly process.

3). d. It destroys the protein using proteasomes

Explanation:

Proteasomes are protein complexes which degrade unneeded or damaged proteins by proteolysis, a chemical reaction that breaks peptide bonds

4). c. Prions

Explanation:

Prion is an abnormal form of a normally harmless protein found in the brain that is responsible for a variety of fatal neurodegenerative diseases of animals, including humans, called transmissible spongiform encephalopathies.

5). a. Unwind parental double helix

Explanation: Helicase is an enzyme that hydrolyzes the bonds between two strands of DNA double helix thereby unwinding parental double helix.

6). b). Met-Asp-Arg-Ile-Asp-Arg

Explanation:

DNA----   TAC-CTA-GCG-TAA--CTA--GCG-ATT-ATC-CGC

mRNA—AUG-GAU-CGC-AUU-GAU-CGC-UAA-UAG-GCG (transcription)

AA------- Met---Asp—Arg— Ile ---Asp—Arg-STOP- (translation)

There will be no further translation when stop codon reaches. Thus the translation exists from stop codon.

7). d). tRNA

Explanation:

The word tRNA itself indicates transfer RNA, which transfers amino acids towards the mRNA present in the ribosomes during translation.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.