Question

What is the oldest and most unchanged cellular process?

A. None of these

B. DNA inheritance

C. Protein Synthesis

D. Dogs

E. Fermentation

F. Morphology/shape

G. Aerobic Respiration

H. Anaerobic respiration

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The Eubacteria cell wall is made up of a complex polysaccharide known as?

A. None of these

B. Pectin

C. Pseudomurin

D. 70s subunits

E. Phospholipid bilayer

F. 80 subunits

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Protein Synthesis involves linking components called

A. RNA

B. tRNA

C. None of these

D. mRNA

E. DNA

F. Nucleotides

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The SYMBIOTIC THEORY discusses the origin of this most important complex cell organelle.

A. Nucleus

B. Vacuoles

C. Mitochondria in all cells

D. Plasma membrane

E. Golgi

F. Ribosomes

G. Rough endoplasmic reticulum

H. Cell Wall

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This cell has only Exons?

A. Viruses

B. Eukaryota

C. Plants

D. Protists

E. Animals

F. Prokaryotes

G. None of these

H. Funji

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Protein Synthesis takes place in 2 steps, which step involves “matching” complementary letters of tRNA to 3 letters on the mRNA strand?

A. Translation

B. Transposition

C. Transcription

D. 2 of these are correct

E. None of these

F. Electron Transport

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Bacteria that have a flagella are considered to be?

A. Eukaryotes

B. Animals

C. Protist

D. Nonmotile

E. None of these

F. Eubacteria

G. Motile

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How many “Shapes” of bacteria are general discussed in general?

A. Cocci

B. 5

C. 2

D. 6

E. 8

F. Rods

G. None of these

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This chromosome has a HISTONE wrapping?

A. Archaea

B. None of these

C. Eubacteria

D. Eukaryotic

E. Prokaryotes

F. Protists

Answer 1

The chromosomes have histone wrapping in

Option D. Eukaryotes

Explanation

Eubacteria and Archaea are single celled organisms that are placed under the category pokaryotes

Protists are eukaryotic organisms

Eukaryotes are organisms that have membrane bound nucleus and have various membrane bound cell organelles to carry out the metabolic processes.

Prokaryotes lack membrane bound nucleus and have only ribosomes as the cell organelle. They lack membrane bound organelles.

The packaging of DNA in eukaryotic cell takes place with the help of positively charged basic proteins called histones. There are five different types of histones namely H1, H2A, H2B, H3 and H4. H2A, H2B, H3 and H4 occur as dimer and forms for the core histone which is an octamer. H1 acts as a linker histone. DNA is wrapped around this histone octamer resulting in first level of DNA packaging in prokaryotes. These structures are known as nucleosomes. These nuclosomes are 11nm in and they condense further to form solenoid structure of 30nm which is known as nucleosome superhelix. This sructure condenses furtherr to form chromatin (300nm).

The prokaryotic DNA packing is based on supercoiling of the DNA. The process is carried out by protein called HU and Topoisomerase I by introducing negative supercoiling.