BIO340- Chapter 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Molecular Genetics | Structure & processes such as replication, transcription, and translation
🗑
|
||||
| Transmission genetics | Mendelian genetics and its variations
🗑
|
||||
| How many chromosomes in a human cell? | 46
🗑
|
||||
| How long is DNA in a human cell? | 2 meters
🗑
|
||||
| How many DNA bases in a human cell? | 3 billion
🗑
|
||||
| How many genes that code for proteins in a human cell? | 21,000 genes
🗑
|
||||
| Reverse transcriptase | a type of DNA polymerase that uses an RNA template to synthesize DNA
🗑
|
||||
| Where is reverse transcriptase commonly found? | retroviruses & retrotransposable elements
🗑
|
||||
| What are the four levels of biological organization? | Molecular, cellular, organismal, population
🗑
|
||||
| Small mutations | base substitutions (A to G) or length mutations (insertions or deletions)
🗑
|
||||
| What's an example of a base substitution? | A to G
🗑
|
||||
| What's an example of a length mutation? | Insertion or deletion
🗑
|
||||
| What's PKU? | Phenylketonuria- a disease caused by the inability of an individual to break down amino acid phenylalanine into tyrosine
🗑
|
||||
| PAH | a gene that codes for the enzyme PAH (phenylalanine hydroxylase) that catalyzes the chemical reaction of breaking down phenylalanine into tyrosine
🗑
|
||||
| What happens if phenylalanine accumulates? | It's converted into phenylpyruvic acid in the liver which crosses the blood-brain barrier and is toxic to nerve cells; it affects the brain early in development and can cause mental retardation
🗑
|
||||
| Compound heterozygote | When an individual has two different mutant alleles
🗑
|
||||
| In terms of PKU, how is it that genotype doesn't necessarily determine phenotype? | Environment can affect whether or not someone has PKU because if it's caught early enough, the diet can be controlled and the brain can develop as it should
🗑
|
||||
| BH4 | Tetrahydrobiopterin- a cofactor of PAH, And the alleles at four genes influence the production & recycling of BH4
🗑
|
||||
| BBB | Blood-brain barrier- prevents most molecules from entering the brain, and alleles at several genes affect the strength of the BBB
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
817229501
Popular Science sets