Are Eu a Prokaryote?
The Cell's Machinery
Building a Macromolecule
Regulators
Exploring the Gene Map
100

This is where you would find the genetic material of a bacterium

What is the cytoplasm? 

100

These translation factories are found in both prokaryotes and eukaryotes

What are ribosomes?

100

The tRNA anticodon reads CAG and bonds to this mRNA codon

What is GUC?

100

The non-coding region upstream of the gene where transcription factors and eventually RNA polymerase bind. 

What is a promoter?

100
This is the thing that a gene holds the code for making. 

What is a protein?

200

These types of cells can perform transcription and translation simultaneously with no RNA processing required. 

What are prokaryotes (or bacteria)?

200

As the name implies, these enzymes help to add RNA primers to unzipped DNA strands to begin the elongation or extension phase. 

What is primase?

200

The RNA responsible for moving a single strand of RNA from the nucleus to the cytoplasm

What is messenger RNA?

200

These proteins help regulate the first step of protein synthesis in eukaryotes

What are transcription factors

200

A nonsense mutation often occurs when a substitution is made changing a codon to create a premature this instead of an amino acid 

What is a stop signal?

300

DNA wraps around these protein structure to form nucleosomes and eventually histones. 

What are histones? 

300

This enzyme is responsible for the addition of nucleotides to an mRNA sequence during transcription

What is RNA polymerase?

300

This process involves building a polypeptide chain of amino acids from the mRNA code 

What is translation?

300

All cells in an organism share the same genome but differ in this leading to a variety of specialized cells. 

What is gene expression?

300
After transcription, portions of the gene transcript are "spliced" out leaving behind these coding regions

What are exons?

400
In prokaryotes, this contains a group of related genes that are all controlled by the same regulation mechanism.  

What is an operon?

400

This enzyme prevents supercoiling in DNA as it unravels during replication. 

What is topoisomerase?

400

All nucleic acids must by built in this direction

What is 5' to 3'?

400

In the lac operon, lactose will bind to this regulatory molecule leading it to detach from the operator and allow for transcription to occur. 

What is a repressor? 

400

This impactful gene mutation type is caused by the insertion or deletion of a single base, leading to a completely new amino acid sequence. 

What is a frameshift mutation

500

In eukaryotes, differential this allows for many different proteins to be formed from the same original gene 

What is splicing?

500

During RNA splicing, introns are cut out of the transcript by this molecule with an apt name

What is a spliceosome?

500

According to Chargraff's rule, if 30% of a DNA sample contains cytosine nucleotides, there should be this percentage of thymine nucleotides. 

What is 20%?

500

You must be far far upstream to find this regulatory sequence that folds over to attach additional transcription factors leading to increased expression

What is an enhancer?

500

You may find a bunch of these DNA bases downstream of the coding region of the gene, that will eventually signal the addition of a 3' cap

What are adenines (As) (poly-A tails)