Chapter 9 Quiz Flashcards
A nucleotide contains…
A 5-carbon sugar, a nitrogen base, and phosphate
What is the smallest unit of heredity?
A gene
The nitrogen bases in DNA are bonded to the________
Deoxyribose
DNA replication is semi conservative because the ________ will become half of the _________molecule
Template, finished
In DNA, adenine is the complementary base for_________, and cytosine is the complement for___________.
Thymine, guanine
The base pairs are held together primarily by_______
Hydrogen bonds
Why must the lagging strand of DNA be replicated in short pieces?
Because the DNA polymerase can synthesize in only one direction
Messenger RNA is formed by ________of a gene on the DNA template strand
Transcription
Which molecule adapts the genetic code to protein structure
Transcription
The lac operon is usually in the _______position and is activated by a__________molecule
Off, inducer
For mutations to have an effect on populations of microbes, they must be…
Inheritable and permanent
Plasmid
Circular piece of DNA
found in bacteria
can be transferred from cell to cell
Which genes can be transferred by all three methods of inter-microbial transfer?
Drug resistance
Simultaneous transcription and translation is found in…
prokaryotes but not eukaryotes
Introns are found in….
Eukaryotes but not prokaryotes
