#4 DNA Packaging in Eukaryotic cell

Feuture

2

There are _ types of Chromatins

Euchromatin

A type of chromatin: very spacious, open, less tight, and available for gene expression; Loosely associated

Heterochromatin

A type of chromatin: Condensed; Highly packed; Not available for gene expression

RNA

Is also a polynucleotide structure almost similar to DNA

ribose

RNA contains sugar ___________

uracil

RNA contains _______ instead of thymine

U,C

RNA is generally single stranded, when strands loop back, bases can pair A=_? and G=_?

enzymatic

RNA: some has _______ activity

Self-replicate

RNA does not ________, instead they are encoded by genes

Protein

RNA is synthesized in for the translation of _______

6

How many types of RNA is defined?

Messenger RNA

Type of RNA: Determines the amino acid sequence of proteins

Ribosomal RNA

Type of RNA: Combines with a protein subunit to form ribosomes which the site of protein synthesis

Ribosomal RNA

Type of RNA: has catalytic/enzymatic activity

Transfer RNA

Type of RNA: Helps transport amino acid to the site of protein synthesis

Long Noncoding RNA

Type of RNA: Maybe associated w/ certain diseases

Small Interfering RNA

Type of RNA: Used by scientist to knockout

MicroRNA

Type of RNA: For degradation/ suppress protein synthesis

3

Major Types of RNA: How many many majors type of RNA is defined?

mRNA

Major Types of RNA: Comprised only 5% of all RNA in a cell

mRNA

Major Types of RNA: Carries the genetic information from the nucleus to the ribosome

mRNA

Major Types of RNA: Dictates the amino acid sequence

protein

Each mRNA corresponds to specific _______

tRNA

Major Types of RNA: Smallest among the 3 major species of RNA

tRNA

Major Types of RNA: Transfers amino acids from the cytoplasm to the protein synthesizing machinery of the cell

tRNA

Major Types of RNA: Has a cloverleaf structure

rRNA

Major Types of RNA: largest

rRNA

Major Types of RNA: Binds to protein subunit to form ribosomes

rRNA

Major Types of RNA: Has peptidyl transferase activity (enzymatic activity)

enzymatic activity

Major Types of RNA: peptidyl transferase activity is called _______