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Bio SNC201 Mr.Young

Notes from unit.3 ch. 2

QuestionAnswer
What two organelles are located in the nucleus? The nucleolus and the chromosomes.
When chromosomes are invisible and uncoiled, they are called what? Chromatins are chromosomes that are invisible and uncoiled.
Sugar in the DNA is otherwise known as what? Sugar in the DNA is otherwise known as deoxyribose.
The four Nitrogenous bases appear opposite to each other. Which Nitrogenous bases appear opposite to each other? Aderine is opposite to Thymine. Guanine is opposite to Cytosine.
Codons are a 3 nucleotide sequence that codes for what? They code for amino acids.
Nucleotides contain a single bar of what? Nucleotides contain a single bar of nitrogenous bases.
How many amino acids are in a DNA strand? There are 20 amino acids in a DNA strand.
Why are certain people to be tall after their growth spurt. The codon sequence of the gene segment codes for a person to be tall.
What test do doctors do when they want to test a baby if they have Phenylketonuria? Doctors prick a baby in the feet to test the blood if it has the enzyme that can digest phenylalanine.
What causes a person to have down syndrome? A person has an extra chromosome in their genetic DNA.
What does Huntington's disease affect to makes a person lose muscle control ? Huntington's disease affects the nerve cells, which is why they lose muscle control.
Lemons are a fruit crossbred from bitter oranges and citrons which makes it a _________? Transgenic Organism
Organisms that had their DNA altered by another organism's DNA combining with its own is known as what? Genetic Engineering
What causes a organism to undergo a mutation? The gene segment switches the order it was in.
Why are cigarettes that give somebody cancer considered a mutagen? Mutagens are considered a catalyst that mutates the genes. Cancer is a result of a gene mutation, which the cigarette is the cause of, leading it to be a mutagen.
What is required for an organism to be cloned? The cells of the original animal is put into an unfertilized egg that has its nucleus removed.
Created by: Lushaun
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