Basic Chemistry . But this is Biology????? atoms, elements, molecules, compounds
What are the most common elements in ALL living things
Trace elements? Symptom of an iodine deficiency Iron deficiency?
Fluorine deficiency? Structure of an atom (its subatomic particles) Locations and charges of protons?
Neutrons? Electrons? Atomic number Atomic mass
Atomic Mass vs. Atomic Number????? What is an isotope?
Isotopes use to diagnose disease Give a molecule similar to glucose that has a radioactive tag PET scan picks up the released radiation and detects areas of high
metabolism Cancerous throat tissue
Radioactive iodine High doses can treat thyroid cancer Small doses used to test thyroid function. shows the concentration of radioactive tracer bound to monoamine oxidase B
(MAO B). Red shows the highest concentration. MAO B is important because it breaks down the chemicals that allow nerve cells to communicate and regulate blood pressure. What causes an atom to react with other
atom? Or would cause it to be nonreactive (stable)? Ionic Bond
Water () ()
O H (+)
H (+) Hydrogen bond
Strong attraction for electrons
Cohesion of water water sticking to itself Does this because of hydrogen
bonding Results in water having surface tension film on top of
water Transpiration Uses cohesion and adhesion to move water from the roots to top of a tree
Adhesion of water To cells of xylem Cohesion of water to itself
Adhesion water sticking to something else Meniscus
Temperature moderation Water resists changes in temperature Water can absorb and release a lot of thermal energy with a small change in temperature
ex: lake temperatures moderate temperatures at coasts Feb: 44.3 F July: 65.3 F
Feb: 15.7 F July: 70.4 F ex: evaporative cooling -when water evaporates from our skin, it takes a lot of
thermal energy with it Densit y
Water is densest at 4 C Provides insulation and
allows wildlife to survive under a layer of ice Ice is less dense
than liquid water Ice floats Water is an almost universal solvent
In a solution the SOLVENT is the substance in a greater amount The SOLUTE is the substance present in a lesser amount
Ionic compounds (like salt) will dissolve in water Polar molecules will dissolve in water
(sugar) Glucose pH
A few water molecules can break apart into ions hydrogen ions (H+) hydroxide ions (OH)
Copyright 2009 Pearson Education, Inc. pH Acids vs. bases An acid is anything that INCREASES the
relative concentration of H+ A base is anything that DECREASES the relative concentration of H+ Either by adding OH- or removing H+
Copyright 2009 Pearson Education, Inc. A pH scale (pH = potential of hydrogen) is used to describe whether a solution is acidic or basic
pH ranges from 0 (most acidic) to 14 (most basic) A solution that is neither acidic or basic is neutral (pH = 7)
Copyright 2009 Pearson Education, Inc. pH scale 0
1 Acidic solution
Increasingly ACIDIC (Higher concentration of H+) Battery acid 2 Lemon juice, gastric juice
The group you see pictured here checking out their pedometers each lost more than 50 pounds—and a couple lost more than 100 pounds—with help from TOPS. And while not every member sees results this dramatic, or has 50 or 100...
Pre-AP English II Agenda 8/26. Intro to class - Purpose and AP Website. Turn in summer reading project. If you do not have it, turn in a sheet of paper with a heading explaining why you do not have it.
Animal Phyla. Animals . Animals are multicellular organisms that cannot make their own food (heterotrophs) They are grouped into individual phyla. based on things such as body structure and how they reproduce. Backbones. All animals can be grouped into two...
Misunderstanding relationship between Parish, Metropolis, Archdiocese and Patriarchate. Communications/PR (ineffective communication of Vision and inefficient or inadequate use of new technology, especially to reach youth) Metropolis Administration (lack of sufficient responsiveness and resources) Parish Governance
Future research should look at using an equal number of males and females, to lessen the female bias. The possibility of stress or worry being a mediating variable between mindfulness and affect level should also be looked into, as an...
TIMED PAIR SHARE. On the last day he has to have a reformation meeting.. Does anyone know what this means? A reformation meeting is a meeting that Marcus has with someone from the Crime Prosecution Service and his Youth Worker...
- It's original intent was to 1) provide affordable drug access for low income and indigent families and 2) create a revenue stream for qualifying entities from the price spread between 340B pricing and AWP. When HCR was implemented a...