BIOL 204 Athabasca U- Midterm Questions with Guaranteed Pass Questions with Correct Answers

BIOL 204 Athabasca U- Midterm Questions with Guaranteed Pass Questions
with Correct Answers


Question 1:
phospholipid bilayer that surrounds all cells and regulates what enters and leaves the cell
Answer:
cell membrane (plasma membrane)



Question 2:
A cell that contains a nucleus and membrane bound organelles
Answer:
eukaryote



Question 3:
A non-membrane-bounded region in a prokaryotic cell where the DNA is concentrated.
Answer:
nucleoid



Question 4:
A part of the cell containing DNA and RNA and responsible for growth and reproduction
Answer:
nucleus



Question 5:
A unicellular organism that lacks a nucleus and membrane bound organelles
Answer:
prokaryote



Question 6:
amyloplast
Answer:
Unpigmented plasids that store starch grains, abundent in cells of stems, tubers, and seeds

,Question 7:
anchoring junction
Answer:
mechanically attaches adjacent cells to each other or to the basement membrane



Question 8:
bacterial flagellum
Answer:
A ropelike structure built from actin proteins that, through rotary movements, propels a
bacterium through fluid.



Question 9:
capsule
Answer:
A sticky layer that surrounds the cell walls of some bacteria, protecting the cell surface and
sometimes helping to glue the cell to surfaces.



Question 10:
cell wall
Answer:
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.



Question 11:
A structure in animal cells containing centrioles from which the spindle fibers develop.
Answer:
centrosome



Question 12:
An organelle found in plant and algae cells where photosynthesis occurs
Answer:
chloroplast

, Question 13:
chromoplast
Answer:
a colored plastid other than a chloroplast, typically containing a yellow or orange pigment.



Question 14:
the folds of the inner membrane of mitochondria. The site of the electron transport chain
Answer:
crista (pl. cristae)



Question 15:
A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in
movement
Answer:
cytoskeleton



Question 16:
endoplasmic reticulum (rough or smooth)
Answer:
extensive interconnected network of membranous channels called cisternae, some have
ribosomes covering it and others don't.
protein and lipid synthesis



Question 17:
The substance in which animal tissue cells are embedded, consisting of protein and
polysaccharides.
Answer:
extracellular matrix



Question 18:
flagellum (pl. flagella)
Answer:
Long, slender extension used for locomotion by some bacteria, protozoans, and sperm.