Characteristics of Life
What are the eight characteristics of life?
Growth and development
Reproduction
Organization
DNA
Homeostasis
Obtain and use energy
Response to stimuli
What's the difference between cohesion and adhesion?
Cohesion: water sticking to water
Adhesion: water sticking to something else
What is the difference between a monomer and polymer?
Monomer: One part of a macromolecule
Polymer: A strand of many monomers
Define organism?
Any living thing
What are the three subatomic particles, their charges and their location within an atom?
Proton + / inside nucleus
Electron - / orbiting nucleus
Neutron 0 / inside nucleus
What is the organization of living things?
Atom, molecule, macromolecule, organelle, cell, tissue, organ, organ system
What are the six properties of water?
1. Polar
2. Universal solvent
3. Less dense as solid
4. High heat capacity
5. High heat of vaporization
6. Cohesion and adhesion
Organize the macromolecules from first used as energy source to last/never.
Bonus: Can you include the calories with your list?
Carbohydrates, lipids, protein
Nucleic acids aren't broken down
What is the difference between hydrophobic and hydrophilic?
Water fearing vs. water loving
p+ 18
n0 22
e- 18
What is the function of DNA?
Specifies structure and function of living things
Water sticks to itself when you add it drop by drop onto a penny. What property makes this happen?
Cohesion
What is the monomer and polymer of carbohydrates?
Monomer: monosaccharides
Polymer: polysaccharides/disaccharides
What do we mean when we say lipids are hydrophobic?
Give examples of both saturated and unsaturated fats
Lipids are "water fearing" meaning they don't mix with water. Ex: oil and water
What are the six elements of life?
CHNOPS
What is the difference between an organism responding to the environment versus an evolutionary adaptation
Responses Vary
An organism reacting to something in the moment versus a population changing over a long period of time that help an animal survive & reproduce
What type of bond is between water molecules? What type of bond is within one water molecule?
Between water molecules: Hydrogen bonds
Within water molecules: Covalent bonds (polar because they aren't shared equally!)
Why aren't nucleic acids on nutrition labels? Can you lack nucleic acids?
Nucleic acids (DNA and RNA) are in every living thing
Nobody is lacking or deficient in nucleic acids
What is the difference between and isotope and an ion?
Ion: Different number of electrons but same element
K + Si -->
Student response
How are homeostasis and response to stimuli related?
Homeostasis is your body maintaining it's stable internal condition and it does this by responding to stimuli
Universal Solvent and High heat of vaporization
What is the function of each macromolecule? And provide the monomer and polymer of each.
Lipid: Long term energy storage (fatty acids and triglycerides)
Carbohydrate: Quick energy & structure (monosaccharides and polysaccharides)
Protein: Many many things (muscle contraction, enzymes, etc.) [amino acids and polypeptide]
Nucleic Acids: Storing and transmitting instructions to make proteins
[nucleotide and nucleic acid (DNA/RNA)]
What is metabolism?
The process in which organisms use energy to break down and build up materials
Describe the difference between polar and non-polar molecules.
Bonus: Can you provide an example of each?
Monomer: Amino acids
Polymer: Polypeptides