Test: Organelles
Some leukocytes absorb entire _____________ by the process of phagocytosis.
Bacteria
according to the Organismal Theory the ___________ is the basic unit.
Organism
The natural tendency of molecules to move from higher to lower concentrations is
Diffusion
Current scientific methods can conclusively distinguish between all microorganisms
False
Ribosomal RNA is produced in the cytoplasm.
False
Simple cell division of both plants and animals is an identical process.
False
The taxonomic classification of all organisms is certain.
False
The simplest operational cell is still more complex than a computer.
True
The plasma membrane of a human cell:
acts as a selective gatekeeper
Why will external fluid flow into a plant cell?
because the external water concentration is greater because the external salt concentration is less
According to the Cell Theory, _________ is the basic unit of life;
cell
A leukocyte is responsible for:
fighting disease by phagocytosis or antibody production
Which way will water flow for the following external solutions?
hypertonic: out of into the cell
What characteristic is completely unique about DNA?
it contains coded information
The relative concentration of water in a hypertonic solution is:
low
The Krebs cycle takes place within the :
mitochondria
Any functional plant or animal with interrelated parts is considered as a(n)
organism
the process of photosynthesis.
plants convert the energy of sunlight into chemical energy stored in the bonds of carbohydrates
Which statements describe organisms referred to as "colonial"?
similar bacteria or protozoa which group together
