TYBSC Sem V: Form and Function-III Cytology MCQ

More than one codon can specify the same amino acid.

AUG, signals the beginning of translation.

Used by almost all living organisms.

Consists of three nucleotides.

Signals the end of translation.

Shine-Dalgarno sequence.

Formylmethionine

Occurs in prokaryotes.

Shine-Dalgarno sequence.

A ribosome's A site.

Methylated cap is recognized

AUG codon signals the start of translation.

40S and 60S.

GTP provides energy during the translation process.

Cytoplasm.

Sections of DNA that can move from one location to another within a genome.

Chromosomes carrying genes that cause death if present in a particular form.

Chromosomes that are behind in their replicating process.

Giant chromosomes formed by multiple duplications and subsequent DNA replication without nuclear division.

A semipermeable membrane that encloses the vacuole.

A large membrane-bound organelle in plant cells that stores water, nutrients, and waste products.

A sequence of nucleotides at the 5' end of an mRNA molecule that precedes the coding sequence.

A specific sequence in prokaryotic mRNA that's crucial for ribosome binding during translation.

Plant cells store byproducts of metabolic pathways in vacuoles.

A membrane, specifically surrounding the vacuole in plant cells.

Water enters the vacuole via osmosis.

The differentially permeable membrane surrounding the vacuole, maintaining its contents and regulating its composition.

Plant cells store a variety of toxin compounds within their vacuoles.

Tonoplast is the membrane surrounding the vacuole.

The nucleus controls metabolic activities within the cell.

A protein network that lines the inside of the nuclear membrane.

The fluid substance filling the nucleus.

The nucleolus is the site of rRNA synthesis.

Callan discovered nuclear pores.

Nucleolus contains enzymes important during ribosomal RNA synthesis.

Giant chromosomes that are made through multiple rounds of DNA replication without nuclear division.

Sites of RNA synthesis in salivary gland chromosomes.

Its characteristics are conserved among different species.

More than one codon can specify the same amino acid.

Codons are read independently and don't overlap

UGA, a termination codon in the genetic code.

TAG is a termination codon, not a normal amino acid codon.

Khorana developed methods to synthesize mRNA with known nucleotide sequences.

The anticodon is found on tRNA.

The Shine-Dalgarno sequence is located on prokaryotic mRNA.

The codon that signals the start of protein synthesis.

A sequence of three nucleotides that codes for a specific amino acid in a protein.

Formylmethionine initiates protein synthesis in prokaryotes.

The codon UAA signals the end of protein synthesis.

The codon UAG signals the end of protein synthesis.

The codon UGA signals the end of protein synthesis.

Large chromosomes found in the salivary glands of Drosophila, used in cytogenetic studies.

The nucleus stores all the genetic information in a eukaryotic cell.

Nuclear membrane is continuous with the endoplasmic reticulum.

A thickened ring surrounding a nuclear pore.

Ribosomes are assembled in the nucleolus.

Plant cell vacuoles are enclosed by a membrane called the tonoplast.

Vacuoles in unicellular organisms like Paramecium regulate water balance.

The Shine-Dalgarno sequence on prokaryotic mRNA, guides the ribosome to the start codon.

The genetic code has 64 codons.

The codon AUG codes for Methionine.

Gamov provided the experimental evidence for the triplet code.

Methionine initiates protein synthesis in eukaryotes.

Chromatin is the material found within the nucleus.

Nucleolus is the site of RNA production.

Vacuoles in cells store and sequester various substances, including toxins.

The Shine-Dalgarno sequence.

A genetic code dictionary has 3 stop codons.