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exam 2 chapter 4
nn
33
Health Care
Not Applicable
02/26/2014

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Term
DNA
Definition
The Blueprints for building proteins are these molecules
Term
Nucleus
Definition
These Blueprints are located here in the cell
Term
Transcription
Definition
The first major phase in the making of a protein, which takes place in the cell nucleus, is called
Term
Transcription
Definition
The process of making a copy of a gene
Term
Messenger RNA
Definition
The end product of the process
Term
RNA Polymerase
Definition
The making of the copy is catalyzed by this enzyme
Term
mRNA Processing
Definition
The next step in the nucleus involves cutting and spliceing of the copy
Term
Exons
Definition
The sections of the copy that are spliced together are called
Term
introns
Definition
the sections that are removed from the original copy are called
Term
translation
Definition
the second major phase in the making of a protein takes place in the cytosol. the process is called
Term
Ribosome
Definition
the specific 2 subunit structure involved in the process is
Term
Transfer RNA
Definition
this molecule delivers the correct amino acid for the growing peptide
Term
primary
Definition
this level of protein structure is achieved during this process
Term
Codon
Definition
the 3-base sequence of mRNA is called
Term
anticodon
Definition
this 3-base complementary sequence matches up with the sequence mRNA to ensure the correct amino acid is placed in the growing chain
Term
peptide
Definition
the specific name for the bond between adjacent amino acids is
Term
post translation modification
Definition
the phase after translation for some peptide involves some changes such as cleavage, cross-linkage, or folding. This phase is called
Term
Endoplasmic Reticulum
Definition
sometimes the ribosomes attach to this membranous organelle so the peptide can enter and take on higher levels of structure
Term
Golgi Complex
Definition
peptides or proteins that are going to be secreted from the cell are packaged in vesicles in this membraneous organelle
Term
Cell cycle
Definition
the entire life of a cell includes periods of growth and division. Together these periods are called the
Term
Mitosis
Definition
this major phase of the cell's life involves the division of the DNA for the two daughter cells
Term
cytokinesis
Definition
the division of the cytoplasm and the pinching off into two daughter cells is specifically called
Term
g1 phase
Definition
when a cell finishes dividing, each daughter cell takes about half of the organelles and related structures from the "parent" cell. that is why the daughter cells immediately enter this sub-phase
Term
interphase
Definition
the major phase, made up of several sub-phases, that precedes and follows cell division is called
Term
s phase
Definition
during this sub-phase, a dublicate copy of the DNA is made
Term
prophase
Definition
during this phase, the DNA condenses into the familiar x-shape
Term
sister chromatids
Definition
The familiar x-shape of the chromosomes is actually made up of two of these
Term
Prophase
Definition
microtubules grow out of the centrioles during this phase
Term
prophase
Definition
the nuclear envelope disappears during this phase
Term
metaphase
Definition
the chromosomes line up along the equator during this phase
Term
anaphase
Definition
during this phase, the centromere divides and the sister chromatids begin to separate
Term
telephase
Definition
the sister chromatids reach opposite sides of the cell and new nuclear envelopes begin to form in this phase
Term
telephae
Definition
the chromosomes uncoil and the spindle fibers disappear during this phase
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