Central Dogma Of Molecular Bio

Question 1

DNA
Each nucleotide consists of three components:
•a _______ base: cytosine (C), guanine (G), adenine (A) or thymine (T)
•a ____-carbon sugar molecule (deoxyribose in the case of DNA)
•a ______ molecule

Answer 1

nitrogenous,
five-carbon
phosphate

Question 2

_______ - Consists of a long strand of DNA containing many genes and associated proteins

_____ - Is a locus (or region) of DNA that encodes a functional RNA or protein product, and is the molecular unit of heredity.

______ is one of a pair of genes that appear at a particular location on a particular chromosome

Answer 2

Chromosome
Gene
Allele

Question 3

Genes consist of three types of nucleotide sequence:

coding regions called ______, which specify a sequence of amino acids

non-coding regions, called ______, which do not specify amino acids

__________, which play a role in determining when and where the protein is made (and how much is made)

A human being has 20,000 to 25,000 genes located on 46 chromosomes (23 pairs). These genes are known,
collectively, as the human _______.

Answer 3

exons
introns
regulatory sequences
genome

Question 4

________ is The nucleotide triplets of DNA and RNA molecules that carry genetic information.

Each three successive bases is a _______.

The code triplets in the DNA cause formation of complementary code triplets (called _______) in the RNA

Answer 4

Genetic Code
code word
codons

Question 5

Three exceptions in codon

Answer 5

UAA
UGA
UAG

Question 6

>95% of cell cycle is
represented by ________.

_______factors almost
always slow or stop the
uninhibited life cycle of the cell

Answer 6

interphase
Inhibitory factors

Question 7

STEP 1. Replication
Fork Formation

DNA helicase disrupts the hydrogen bonding between base pairs to separate the strands into a Y shape known as the ________.

This area will be the
template for ______ to begin.

Answer 7

replication fork
replication