Chapter 1-2+ some of 3: Exam 1 REVISED Flashcards
Essay Question: How do you maintain a membrane polarity?
The polarity of the cell membrane is maintained by the selective distribution of lipids and proteins in plasma membrane. Regulates what comes in and out of the cell.
Essay Question: Describe feedback loops and the parts of them.
Negative Feedback Loop: When a human is hungry, the metabolism slows down to conserve on energy and allows the human to live with less food
Positive Feedback Loop: When a woman is in labor and the uterus begins to contract, baby moves down further near the cervix, thinning the cervix effaced, signaling the brain (CNS) to produce oxytocin and send it down to the uterus to make contractions quicker until baby arrives.
Parts of a Feedback loop:
Receptor (Detective)
Control Center
Effector
A steroid has how many rings?
4 rings
Cholesterol is a
hormone
What are the three types of mechanical digestion?
- Chewing (mastication)
- Swallowing
- Entering stomach acid
What is the two types of chemical digestion?
- Catabolism (breaking down energy)
- Anabolism (building larger molecules out of small molecules or atoms)
Non-Polar+Polar=
Amphipathic
Catalyst Change…
Only change time and speed, not the product
Radioisotope=
Unbalanced
Atomic Mass:
Protons and Neutrons
Atomic Number:
Protons
Sodium chloride is
ionic bond (unbalanced)
Potassium Chloride is
ionic bond (unbalanced)
Oxygen is
electronegative
Triglycerides are
3, Sugar backbone
Diasaccharide
2, Lactose
Phospholipid
A head and a tail
Exergonic-
Release of energy
Endergonic
Absorption of energy
Activation Energy:
Energy taking place, increasing temperature and concentration increases bond collisions
Bond Collisions must happen:
At the right time and the right angle
Hydrophobic:
Lipids (does not like water) nothing with carbon
Hydrophilic:
Water loving (phosphate head)
Hydrolysis:
Breaks by adding water
Dehydration synthesis:
Build by removing water
All Enzyme’s end with…
Aze
Prostaglandins:
Contribute to inflammatory response and temperature regulation
Endergonic is what to the touch
Cool to the touch
Exergonic to the touch
Hot to the touch
Protein Structure:
- Primary
- Secondary
- Tertiary
- quatiary
Primary
The order of the amino acids
Secondary
Beta sheets or a-helix
Tertiary
looks like globs, formed by hydrogen bonds
Quartiary
Interacts with other proteins
CHON=
Carbon, Hydrogen, Oxygen, and Nitrogen= needed for life
Potential energy=
potential to move
Kinetic energy=
Energy in motion
Synthesis reaction:
A+B=AB
Decomposition reaction:
AB>A+B
Exchange reaction:
A+B+C>AB+C>AC+B
Colloid=
Large enough to scatter