Structure of Proteins and Cell Division Flashcards
What are the four structures of protein?
Primary, secondary, tertiary, and quanternery
What happens in the primary structure?
Chaining
What happens in the secondary structure?
Beta pleat or alpha helix
What happens in the tertiary structure?
Disulfide bond, stabilizing bond with protein
What happens in the quanternery structure?
Taking tertiary bonds and putting them together
ex. hemoglobin
What are some characteristics of structural proteins?
Deal with fibrous proteins
Need to be water insoluble
Sometimes involved in blood clotting
What are some characteristics of functional proteins?
“More purposeful”
generally water soluble and have flexible, 3D shape that can change
What is denaturation?
Changing the structure and function of the cell (usually by heat)
What are genes?
Instructions that are coded in segments of DNA
May have multiple codes
What are nucleotides?
Include 5-Carbon sugar, phosphate groups, and nitrogenous bases
What are the three types of RNA?
Transfer, messenger, and ribosomal
Characteristics of chromosomes
Supercoiled, coiled around histone proteins, connected to centromere
True or False:
Simatic cells are reproductive sex cells
FALSE.
Simatic cells are all cells EXCEPT reproductive sex cells
What is mitosis?
Replication of identical daughter cell
What is interphase?
DNA synthesized, most of the cell life cycle
Has three phases
What are the phases of interphase?
G1 (growth), S phase (building of DNA and RNA), G2 (growth)
What is an allele?
Opposite form of a gene
Ex. Blue eye gene– Brown eye gene
What happens during prophase? (In Mitosis)
Break down nuclear envelope
Has spindle fibers, just not connected
What happens during metaphase? (In Mitosis)
DNA lines up to Metaphase plate
What happens during anaphase?
Separation of chromatids, connected centromere
What happens during telophase?
Cytoplasm cutting
What kind of cells go through meiosis?
Reproductive sex cells
What is a tetrad?
Pairing up of chromosomes
What is synapsis?
DNA crossing over
X’s crossing
What does Telophase II end with?
Haploids
What is the full set of DNA/chromosomes called?
Diploid number
What is a zygote?
Two gametes
Ova and spermazoid