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Lecture 1

BIOL 2160 Lecture Notes - Lecture 1: Mosquito, Isocyanic Acid, Adipose Tissue


Department
Biological Sciences
Course Code
BIOL 2160
Professor
Cross- Eyed
Lecture
1

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EXAM 1 REVIEW
Don’t need scantrons, MUST have photo ID (or lose 5 points; can’t be on phone)
QUESTIONS
HCNO
o If they’re next to each other nonpolar; if they’re separated by at least one
polar
Affinity=attraction (based on charge)
o If receptor or ligand have charge, the one with most charge will have higher
affinity
AUG start codon (sets of 3=1 amino acid)
H and He will never have 8 electrons because they’re so small 2 is full for them
o Every other atom on periodic table is 8 (CANNOT be higher than 8)
Can make same protein, but if it gets modified, it’s a different protein.
o Once it is made, you can change it to make it different.
Things can stick to enzyme and turn it on and off (don’t have to know too much detail)
Acetyl CoA goes into Krebs Cycle reason we have 6 CO2
o ADP is already in cell (low energy), ETC creates protein gradient that converts
ADP to ATP.
Positive feedback: input and output are the same. (RARE)
o Child birth (don’t normally have contractions)
o Mosquito bite (itch) itchy, you scratch, more itchy
o PositiveFURTHER away from normal
Feedback inhibition can happen from the middle of the assembly line
End-product inhibition is at the end
Endergonic NEED energy
EXERGONIC RELEASE energy
QUIZ GAME
1. Which type of tissue is the least dense (has the fewest cells)?
a. Connective
2. Homeostasis is the body’s ability to maintain an _____ internal environment?
a. Stable NOT CONSTANT
3. In a positive feedback mechanism, the input and output are:
a. The same
4. Sweating when you get hot is an example of a _____ feedback mechanism.
a. Negative
5. Which type of gland utilizes a duct?
a. Exocrine (excretes outside or into body cavity)
6. Insulin and Glucagon are examples of ______.
a. Antagonistic effectors (work in opposition to achieve homeostasis)
7. Which part of a feedback mechanism is responsible for detecting the initial change?
a. Sensor (let’s you know and then reports to integrating center)
8. Adipose tissue (fat) is an example of what tissue type?
a. Connective (also bone, cartilage, blood, etc.)
9. Which type of feedback system moves conditions further from the set point?
a. Positive
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