Chapter 1: The Molecules Of Life Flashcards
(20 cards)
What is a isotope?
Atoms of the same element that have different numbers of neutrons
What is a radioisotope?
An unstable isotope that decays over time by emitting radiation
What are intramolecular forces?
Forces within a molecule
What are intermolecular forces?
Forces between molecules
Where do radioisotopes come from?
Mine them from river, get them from nuclear waste
What is an organic molecule?
A carbon containing molecule where carbon is bonded to hydrogen
There are ___ naturally occurring elements that are the building blocks of matter.
92
The 6 elements that compose the chemical foundation are…
C H N O P S
How is radioisotope tracing used?
Radioactive glucose is injected to patient and then the body is scanned to find where more glucose is being used. This shows cancer cells
Who does Gavin Bradley love the most?
DEVYN DEMARS
What are hydrophobic molecules?
Non polar molecules that do not have attractive interactions with water molecules (water fearing). Example: water and oil.
What are hydrophilic molecules?
Polar molecules that have attractive interactions with water molecules (water loving).
What is an ion?
An atom that had lost or gained one or more electrons giving it a positive or negative charge.
What is a cation?
A ion that has lost one or more electrons giving it a positive charge.
What is an anion?
An ion that has gained one or more electrons giving it a negative charge.
A large complex molecule linked by covalent bonds and composed of reappearing units is known as a ______________.
Macromolecules
Macromolecules are known as ________. These are composed of ________.
Polymers/monomers
What are the four main types of biological macromolecules?
Carbohydrates, nucleic acids, proteins, lipids.
Carbohydrates contain what 3 elements? What is the general formula for carbohydrates?
C, H, O. Formula is (CH2O)n where n is number of carbons.
Carbohydrate molecules are polar or non polar?
Polar
