Characteristics of Life
What is the difference between sexual and asexual reproduction?
Asexual - 1 parent
Sexual - 2 parents
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
What is an organism?
Any living thing
What does "macro" mean?
Large
What does DNA do?
Contains the information that determines the growth and development of organisms.
What 3 atoms make up water?
1 oxygen and 2 hydrogen
What is the difference between saturated and unsaturated fats?
Saturated: solid at room temperature (butter)
Unsaturated: liquid at room temperature (oil)
What is the difference between unicellular and multicellular?
Unicellular - made of 1 cell
Multicellular - made of many cells
What is the monomer of nucleic acids?
Nucleotides
Name at least 2 different ways organisms get energy
make their own food (plants)
eat other organisms (humans)
break down dead material (fungi)
Water travels up the straw that you put in your drink. The water is sticking to the sides of the straw and the molecules are pulling each other up. What property is this?
Capillary Action
What is the monomer and polymer of carbohydrates?
Monomer: monosaccharides
Polymer: polysaccharides/disaccharides
Define surface tension
A special form of cohesion that causes the surface of water to resist breaking (why insects can float)
What do we mean when we say, "Lipids are hydrophobic"
Lipids are "water fearing" meaning they don't mix with water. Ex: oil and water
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
A child throws salt in the ocean then runs into the water. The salt quickly dissolves and the child begins to cry since the water is so cold. The child is confused since it is hot on the sand. What two properties of water are shown?
Universal Solvent and High Specific Heat
Why aren't nucleic acids on nutrition labels
(For example the label on a cereal box could say 10 g of protein)
Nucleic acids (DNA and RNA) are in every living thing
Nobody is lacking or deficient in nucleic acids
What is homeostasis?
Stable internal conditions (temperature, blood sugar, blood pressure)
Name 2 types of food high in protein
meats
nuts
eggs
beans
What are the 8 characteristics of life?
Organization- (made of cells)
DNA
Reproduction
Grow & Develop
Respond to Environment
Evolution/Adaptation
Require Energy
8. Regulation - (homeostasis)
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!)
What is the function of each macromolecule?
Lipid: Long term energy storage
Carbohydrate: Quick energy & structure
Protein: Many many things (muscle contraction, enzymes, etc.)
Nucleic Acids: Storing and transmitting instructions to make proteins
What is metabolism?
The process in which organisms use energy to break down and build up materials
What is the monomer and polymer of protein?
Monomer: Amino acids
Polymer: Polypeptides