Download Pill Bug Investigation

COE Bio
Wed, 3/11/15
Do Now
• Take your seat
• Please take out your notebook
- we will be answering
questions.
Objective:
• Banking Tasks
Agenda:
• Practice Questions
• If you have been absent, or
have missed tasks, check with
me.
• COE Task on Friday, 3/13
Homework:
• Study these
questions if you
are not clear on
the material
DNA (in a nutshell…)
• DNA is made of Nucleotides – the subunits
of DNA
• Nucleotides are:
– Made up of sugar, phosphate, and a
nitrogenous base
– In DNA, there are four (4) possible bases:
•
•
•
•
adenine (A)
thymine (T)
cytosine (C)
guanine (G)
In a nutshell…
• It’s all about that base (A, T, C or G)!
– The sequence of the four different nucleotides
(A, T, C or G) allows DNA to code specific
information
• Code for amino acids > proteins > traits
– Many combinations of bases allows a variety of
information to be coded
– Remember, when DNA replicates:
• A binds with T (Apples in the Tree)
• C binds with G (Carrots in the Ground)
Salmonberry 2b
Write this:
Human Cell
Number of Chromosomes
How many pairs of chromosomes do we humans
have in our BODY cells?
23 pairs of chromosomes
So we have ____ total chromosomes.
46 chromosomes total per body cell
How many chromosomes come from mom?
23 chromosomes
How many chromosomes come from dad?
23 chromosomes
****So we have two “sets” of each chromosome –
one set from mom and one set from dad.
Can you tell me…
What organelle is responsible for protein
synthesis?
What specific process (step of protein
synthesis) occurs on this organelle?
Protein Synthesis
Protein Synthesis: Process of making proteins
from DNA
• Two main parts:
1. Transcription – DNA is “transcribed”
(copied) into RNA in the nucleus. DNA 
mRNA (animation)
2. Translation – mRNA leaves the nucleus and
travels to a ribosome in the cytoplasm. The
coded info is “translated” into an amino acid
sequence to make a protein. mRNA 
protein (animation)
Additional animation
Fill out this chart:
What is it?
Replication
Transcription
Translation
Where does
it happen in
a cell?
What bases
bond
together?