biology 1150 test two (cell struture) Flashcards
centrioles
may function in cell division
microtubule
maintains cell shape and forms tracks on which vesicles move
microfilament
plays a role in muscle contraction and cell division
plasma membrane
regulates movement of materials into and out of the cell
cytoplasm
the material surrounding the nucleus
lysosome
digests substances brought into cell and destroys old parts of cells
mitochondrion
provides cell with energy through the breakdown of glucose during cellular respiration
nucleus
contains dna and controls cellular activity
nucleolus
produces components of ribosomes
ribosome
site where protein synthesis begins
rough endoplasmic reticulum
studded with ribsomes and produces membrane
smooth endoplasmic reticulum
detoxifies drugs and produces membrane
golgi complex
sorts, modifies, and packages proteins
as a cell gets larger, its surface area increases far more _____ than its volume (surface to volume ratio)
slowly
a ____ cell would have difficulty moving all the nutrients it needs and all the wastes it produces and would die
large
a _____ cell has sufficient surface for the uptake and removal of substances and would survive
small
a mature ___ ____ cell carries oxygen
red blood
which of the following structure do all cell types posses
a. membrane bound nucleus
b. plasma membrane
c. cell wall
d. all cells have all of the above
b. plasma membrane
_____ is the jellylike solution within a cell that contains everything between the nucleus and the plasma membrane
a. organelles
b. nucleolus
c. cell wall
d. cytoplasm
d. cytoplasm
almost all the genetic information of a cell is found in the
a. endoplasmic reticulum
b. golgi complex
c. nucleus
d. mitochondria
c. nucleus
the _____ is a bi-layer of phospholipids and responsible for movement of materials in and out of the cell
a. plasma membrane
b. nuclear membrane
c. cytoplasm
d. nucleus
a. plasma membrane
