Cell Biology Exam 2
Photosynthesis is to the chloroplast as______ is to the mitochondria
Respiration
A typical cell must have 3 major components in order to perform all the activity of life. What 3 components?
Ribosome, DNA, Plasma membrane
SYnthesis of lipids and steroid take place in which organelle
Smooth ER
What is the job of sarcoplasmic membrane
Store and release calcium
Name three structures in plant cells that animal cells lack
cell wall, chloroplast. plastids
Virus
has dna and rna shape is defined by capsid
cell communication
plants: cytoplasmic bridges animals:gap junctions
RNA containing virus
Polio, TMV, HIV
The size range of most plant and animal cells is
10-100 μμm.
Ribosome subunit for prokaryotes
50s and 30s
Ribosome subunit for eurkaryotes
60s and 40s
Which of the following is most similar to the watson crick helix?
B-DNA
What is the relationship between chromosomes and chromatin?
Chromatin is a mixture of DNA and proteins that form chromosomes.
The ____ is comprised of the fluid portion of the cell and contains the organelles.
Cytoplasm
Name the manufacturing facilities of the cell
Endoplasmic Reticulum
enveloped virus
HIV
The _____ are prokaryotes that live in very salty enviornments.
Halophiles
DNA containing virus
Herpes, vaccine
The region within the prokaryotic cell where the DNA is located is known as the ________.
Nucleoid
Synthesis of ribosomes takes place in
Nucleolus
Which organelle has only a single membrane around it?
Peroxisomes
Name 3 kinds of plastids present in eukaryotic cells
amyloplasts, chloroplasts, chromoplasts
naked virus
capsid
Prions
causes neurological disease madcow
cell wall made of
cellulose microfibrild or silicon
what is the ectracellular matrix (ECM) made of
colllegen fibers and glycoproteins
The similarity in the evolutionary origins of mitochondria and chloroplasts has led to the development of the ________, which proposed that they were originally bacteria.
endosymbiont theory
Cytosol and cytoskeloton
inside of cell not occupied by nucleus and cytosol is semifluid substance
micotubules(what is, shape, size, evolution)
largest structure of cytoskeloton. hollow cylinder. 25nm diameter. a+b-tubulin-protofiliment- microtubule
non-naked virus
lipid envelope
3 kinds of cytoskeloton
microtubules, microfilimants, intermideate filimants
how many ribosomes in eukaryotic cells? prokaaryotic cells?
millions, thousands
intermideate filament(what is, how many classes, differ where)
most stable and least soluble. six classes. differ in N and C segment
functions of cell wall and extracellular matrix
motility and migration, division and cell differentiation
living or non living? virus
non-living
What name is given to each region of chromatin consisting of histones wrapped with DNA?
nucleosome
non enveloped virus
polio
What is polycistronic DNA
produced by bacteria. prokaryotic
Viroids(what is, where, how big, example)
small circular RNA found in plants smallest infectious agents cudang cudang
microfiliments(What is, provides? evolution)
smallest of cytoskeleton. provide cleavage furrow in cell division. g-actin-f-actin-microfiliments
The matrix to the mitocondria is the _____ to the chloroplast
stoma
ribosome subunit S
svedburg
protofiliments
tetramers form IF
