Exam 1 Flashcards
What four elements comprise 96% of the body’s mass
65% Oxygen
10% Hydrogen
18% Carbon
3% Nitrogen
When atoms bond together due to their sharing of electrons in their valence shells, this is known as
____________
Covalent Bonding
What is the uneven sharing of electrons called
Covalent polar bonding
Even sharing of electrons
Covalent non-polar bonding
What type of bond occurs when hydrogen and oxygen combine to form a water molecule?
Covalent polar bonding
Hydrophilic
Water lovin’
Lipids and lipid-based substances tend to be hydro______
Hydrophobic
The membranes of the cell, nucleus, and many organelles all consist of at least one bilayer consisting of amphipathic molecules known as ______________
Phospholipids
What is an amphipathic
A molecule that contains both hydrophilic and hydrophobic
regions. ie; Phospholipids
Which Regions of an Amphipathic molecule are hydrophobic/hydrophilic
hydrophilic heads facing the aqueous environment
hydrophobic tails orienting towards each other
Cytoplasm
The aqueous environment inside the cell filled with various components of the cell
Cytosol
Only the aqueous component of cytoplasm
The part of cell signaling between ‘receptor’ and ‘cellular response’ is known as _________
Cell(ular) Signaling
Where does transcription happen in the Cell
Inside the nucleus
Where does translation take place?
Outiside the cell (cytoplasm)
What are the four nitrogenous bases of DNA?
ACTG
What are the four nitrogenous bases of RNA?
AUTG
What is a codon
Sequence of 3 nucleotides(ACTG/AUGC)
What is the primary function of epithelial tissue?
Protect internal environment of the body and regulate exchange of materials between internal and external environments
What are the four protein fibers located in the extracellular matrix of connective tissue?
Collagen
Elastin
Fibrillin
Fibronectin
Bonus Q
-“blast” -build
-“clast” - destroy
