Eukaryotic cell Flashcards
Which of the following can be found in an algal cell but NOT in an amoeba? a nucleus a chloroplast a cell membrane a central vacuole
a chloroplast
Which of the following descriptions about the cytoplasm is incorrect?
It protects the nucleus.
Which of the following statements about the nucleus is incorrect?
It is present in all types of cells.
The following are structures of cells: (1) cell wall (2) plasma membrane (3) nucleus (4) chloroplasts Those found in both plant and animal cells are
(2) and (3) only
What is the most likely pathway taken by a newly synthesized protein that will be secreted by a cell?
ER, Golgi, vesicles that fuse with plasma membrane
Which cell would be best for studying lysosomes?
phagocytic white blood cell
SER is
for lipid synthesis
Which of the following does not belong to cytoskeleton? microtubule microfilament intermediate filament cytosol
cytosol
Muscle contraction is due to the movement of
microfilaments
Amoeboid movement by WBC and amoeba is due to the action of
microfilaments
The movement of organelles in the cytoplasm due to the action of microfilaments is called
cytoplasmic streaming
Microfilaments support cellular projections, such as
microvilli
During cell division, movement of chromosomes are supported by
microtubules
Microtubule also support the motion in the flagella and cilia.
tru
Pores in cell wall between adjacent plant cells are called
plasmodesmata
Tight junctions in animal cells prevent the leakage of
water
Gap junctions in animal cells are
for communication between adjacent cells
Eukaryotic cells have
membrane-bounded organelles
Function of TIGHT JUNCTION
Super glue
PREVENT LEAKAGE OF extra cellular fluid
Eg skin is water proof layer
Function of DESMOSOME
FASTEN cells together to SMOOTH SHEETS
eg muscle cells is anchored with one another
Sticky tape
GAP JUNCTION
Communicating junction
Provide cytoplasmic channels btw adjacent cells
Wtf is amoeboid movement ???
Contraction of pulling cells end forward
Function nucleus
Contains genetic material
Function ribosome
Protein synthesis
Function RER
Synthesis proteins further
SER
Synthese lipids
GOLGI APP
further processing of protein products
Lysosomes
Breaks down ingested subs
Vacuole
Store waste and h2o
Mitochondrial
PRODUCE ENERGY JN FORM OF ATP (CELLULAR RESPIRATION!!)
Chloroplast
Contains chlorophyll for photosynthesis
Peroxisome
Contains enzymes conver hydrogen peroxide to h20
3 functions of cytoskeleton
- Structural support (holding up mitochondria)
- Movement ( amoeboid movement, muscle contraction, cyto streaming)
3 motion ( flagella- propulsion of sperm) cillia
Function of cell wall
PROTE TION AND SHAPE
Nucleolus
Make RNA
Cytoplasm
c/r takes place