Cytoskeleton/ Macromolecules
Tissues
DNA & RNA
Membrane Transport/Glands
Misc.
100
Define cytoskeleton?
A network of proteins that defines the shape of a cell and gives it mechanical strength
100
What are the 4 types of tissues?
Epithelial, connective, muscle, and nervous
100
How many chromosomes do humans have?
46
100
Passive transport usually involves ________.
diffusion
100
Organic molecules are not important to life? true or false?
True
200
Name the 3 layers of long fibers that make up the cytoskeleton ?
Microfilaments, intermediate filaments, microtubules
200
Name 1 of the 4 functions of Epithelial tissue
Protect the body from physical damage, control what substances enter and leave the body, provide sensory information, and secrete various substances
200
What does the messenger RNA do?
It is the information carrier in the manufacturing proteins
200
Why does active transport require energy?
Because it involves making a substance go where it "doesn't want to go"
200
Organic molecules always include what?
Carbon and hydrogen
300
Subunits that make up nucleic acids are called what?
Nucleotides
300
What are the 4 major classes of connective tissue?
Connective tissue and proper, cartilage, bones, blood
300
DNA is ______________ coil around each other to form a double helix
nucleotide chains
300
What is the definition of membrane transport?
is the movement of the substances across the plasma membrane
300
What are 3 things ATP is composed of?
ADENINE base, a sugar, and three phosphate groups
400
________ are large molecules made of chains of dozens to hundreds of amino acids
Proteins
400
Name the 3 types of muscle tissue?
Skeletal, cardiac, and smooth muscle
400
Base pairs joined together by ________ hydrogen bonds?
Weak
400
Unicellular glands are found where?
In portions of the linings of the respiratory and digestive tracts.
400
What is it called when the hydrogen ion concentration is reduced?
Base(alkalinity)
500
What are Microvilli
Finger-like extensions that increase the surface area of the cell
500
___________ conveys information by electrical signaling.
Nervous tissue
500
What are the several forms of RNA?
1.) messenger RNA (mRNA) 2.) transfer RNA (tRNA) 3.) Ribosomal RNA (rRNA) 4.) Regulatory RNA
500
Exocrine glands are the ducts that connects the what?
The secretory unit to the surface of the epithelium
500
What are channel proteins?
Hollow central or channel that allows water or small charged particles.
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