~3 billion years ago the Earths atmosphere was - respond to stimuli
composed of - - nitrogen, ammonia, - are capable of self-regulation
methane, carbon dioxide, water and hydrogen - evolve
gas
Prokaryotic cells are - - structurally simple,
Lifes' organic building blocks were formed when - ex: bacteria
- lightning bolts fuelled reactions that
changed the composition of Earth's atmosphere
Eukaryotic cells are - - structurally complex
The method of the Miller-Urey experiment was -
- simulated Earths atmosphere from ~3 Types of eukaryotic organisms are - -
billion years ago then sent sparks of electricity protists, fungi, plants and animals
through the system
Cells are organized with respect to - - time
The Miller-Urey experiment formed - - and space
urea, cyanide, formaldehyde and amino acids,
the basic building blocks of life
Viruses are - - non-cellular macromolecule
packages that can function and reproduce only
The Cell Theory states that - - - the cell is within living cells
the structural unit of life
- all organisms are composed of one or more cell
types Virons are - - inanimate particles that
- cells can only arise by the division of a pre- viruses exist as outside of cells
existing cell
Virons are composed of - - a small amount
The production of a cell requires - - of genetic material and a protein capsule or
information, chemistry and compartments capsid
Compartments are - - membrane bound The types of cells viruses can infect and the host
structures dedicated to a particular function range are defined by - - the specific
proteins on the cell surface
The basic properties of cells are that they -
- - are highly complex and organized A virus with a wide host range is - - rabies
- are actively controlled by a genetic program (dogs, bats, humans, etc.)
can reproduce
- assimilate and utilize energy
- carry out chemical reactions A virus with a narrow host range is - -
- engage in mechanical activities human influenza (epithelial cells of the human
, BIOL 1090 Final Exam Test Questions and Answers Rated A
respiratory system)
Saturated hydrocarbon tails are - - straight
Once a virus has infected a cell it - - because every carbon has hydrogens so no
hijacks cellular machinery to synthesize nucleic double bonds need to form
acids, proteins and new virus particles
Unsaturated hydrocarbon tails are - -
Lytic viral infections - - rupture and kill cells kinked because some of the carbons have
by producing virus particles formed double bonds with their neighbours
because there are not enough hydrogens
Non-Lytic or integrative or lysogenic viral
infections - - - insert viral DNA into the host Biological plasma membranes share properties
genome to create a provirus such as - - 4-6 nm thickness, stable,
- the cell can survive with impaired function flexible and capable of self assembly
The function of biological membranes is to - Membrane composition determines - - the
- - provide cell boundary membrane and the cells function
- define and enclose compartments
- control movement of material
- allow response to external stimuli The inner mitochondrial membrane has a very
- enable interactions between cells high concentration of protein because - -
- provide a scaffold for biochemical activities proteins are needed for making ATP with the
electron transport chain
The Fluid-Mosaic model of biological membranes
was named for - - the way individual lipid The myelin sheath has a very low concentration
molecules move and for the diverse particle that of protein because - - fewer proteins make
penetrate the lipid layer it easier to conduct nerve impulses
The fluid-mosaic model is composed of - - Integral membrane proteins - - have a
a bilayer of amphipathic lipids and proteins hydrophobic transmembrane domain that
remains in the lipid bilayer
The definition of amphipathic is - - having
both hydrophobic (non-polar) and hydrophilic Lipid-anchored membrane proteins - - are
(polar) regions attached to a lipid in the bilyaer
The phospholipids of biological membranes are Peripheral membrane proteins - - associate
composed of - - a hydrophilic phosphate with the surface of the lipid bilayer
head and 2 hydrophobic hydrocarbon tails