What cell type has the least amount of compartmentalization?
Bacteria
What most limits the resolving power of a light microscope?
The wavelength of electromagnetic radiation (i.e, light) used to illuminate the specimen
A prokaryotic cell doesn't have
an endoplasmic reticulum
Transport across a cell membrane in which the cell must use ATP and pushes the compound against a concentration gradient.
Active Transport
This individual is credited with inventing a simple microscope taht was capable of viewing bacteria. Indeed, he is known as the father of bacteriology.
van Leewonhoek
Large numbers of ribosomes are present in cells that specialize in producing what molecule?
Proteins
Plant cells often have a large membrane-bound sac that is used for storing water and other substances. This organelle is a
Central vacuole
Which structure is the site of the synthesis of proteins that may be exported from the cell?
Rough ER
What is capable of converting light energy to chemical energy?
Chloroplasts
What possesses a microtubular structure similar to a basal body?
Centriole
Fibers that are found in cilia and flagella, and are responsible for chromosome movement during mitosis are
Microtubules
What is not present in all eukaryotic cells?
Cell wall
The organelle that can be thought of as a "Mail Box Store" because it modifies and packages compounds for transport is the
Golgi complex
Cell-cell junctions whose function is to bind the membranes together to produce a relatively impermeable boundary.
Tight junctions
What is not bounded by organelle membranes?
Cytoskeleton
Active transport in which two substances are pumped in opposite directions is called
Antiport
On the outer surface of the plasma membrane there are marker molecules that identify the cell type, and can be recognized by the immune system. These are called
Antigens
Lipid synthesis occurs in which eukaryotic organelle?
Smooth ER
For the process of diffusion to occur, molecules must
Move from areas of high concentration to areas of lesser concentration until an equilibrium is reached
Which structure is the repository of the genetic information that directs all of the activities of the cell?
Nucleus
Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the
Cytoskeleton
The process often thought of as "cell eating" is
Phagocytosis
What is not a characteristic of a cell membrane?
Rigid structure
What protein classes are not found as membrane proteins?
Hormones
The chromosomal hereditary material is packaged in this organelle in eukaryotic cells but not in prokaryotic cells. This organelle is
Nucleus
The function of cholesterol in the cell membrane is primarily
to strengthen the cell membrane
Assume that the saline concentration inside a cell is 1.0% and the saline concentration in the environment is 5.0% The environment is _____ to the cell interior.
Hypertonic
What is most likely to be placed on the X-axis of a graph?
Time
What is the main purpose of a simple statistic?
Describe the population
What is the main purpose of a parametric statistic?
Test a hypothesis
What is the purpose of the pores found in the nuclear envelope
They allow mRNA out of the nucleus
What is the endosymbiosis theory?
An organelle cam about by a bacteria engulfing another cell
What is the function of Mitochondria?
Aerobic cellular respiration to make ATP
What are two functions of cell walls?
StructureProtect against osmosis
What are three components of the cell theory?
Anything living is a cell or consists of cellsNothing less than a cell is livingCells give rise to new cells