Biology Unit 2
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Biology Unit 2
What was the first cell seen by Robert Hooke using a microscope?
Who described cells as animalcules?
What are the parts of the cell theory?
All cells come from pre existing cells, calls are the basic units of life.
What are the major differences between prokaryotic and eukaryotic cells?
prokaryotic have no nucleus, eukaryotic have nucleus
What cell feature is absent in bacterial cells?...same as above
What kingdoms belong with eukaryotes? Prokaryotes?
prokaryotic are bacteria and archae bacteria eukaryotic have protists fungi animals and plants
Besides the nucleus, what else is missing in eukaryotic cells?
Mitochondria, membrane, organelles.
What are groups of bacteria living together in close groups?
What are the main functions of the nuclear envelope?
controls DNA access, seperates DNA from cytoplasm.
What are called smooth or rough depending on structure?
Where in cells are proteins manufactured?
Rough endoplasmic reticulum
Which organelle is responsible for breaking down the alcohol that is consumed?
In what organelle do plant cells form NADPH?
What is a major difference between animal cells and other kingdom’s cells?
no cell wall in animal cell
How is the plasma membrane organized?
A concentration gradient ceases to exist when….
Isotonic, when its equilibrium, no net movement.
How do O2, CO2, and other nonpolar molecules cross the
What would facilitated diffusion look like? Active transport?
(picture on slide)
What is the movement of a molecule against a concentration gradient? What does it require? Which process doesn’t require ATP?
Active transport. ATP requires. passive does not.
What would happen to a cell placed in a hypotonic solution?
A red blood cell would burst when placed in which kind of solution? When would it shrink? When would it stay the same?
hypotonic. hypertonic. isotonic.
A plant would wilt if it was place in which type of solution?
How do WBC get rid of unwanted particles in the blood?
fagocytosis.process of endocytosis
process moves water molecules across a permeable membrane?
What process moves molecules from higher to lower concentration?
What process is the movement of molecules against a concentration gradient?
tends to flow from concentrated to less concentrated forms is part of which
What does the first law of thermodynamics state?
energy cannot be created or destroyed
do endergonic reactions require?
some form energy
would a drawing of an inhibitor and activator look like?
What is equilibrium
What type of molecules are scientists trying to
create from the breakdown of cellulose
biofuels, taking sugar and breaking it down.
What organisms derive their chemical energy from
the process of chemosynthesis
Where do animals obtain their energy and carbon
What do plants need to carry out photosynthesis
light, water, carbon dioxide,
What color of light does chlorophyll reflect
What is the first event of photosynthesis
electrons transfer, then water splits.
What gas were the algae in Engelmann’s
experiment releasing? What light was best for plant growth according to his investigation
oxygen, violet and red
Where in the plant is chlorophyll found
What carbon source do organisms use for
What are the products of the light
dependent/independent reactions of photosynthesis
oxygen, ATP, NADPH
Where are sugars formed in the chloroplasts
Where does oxygen released in photosynthesis
What is the internal membrane system of the
How do the two photosystems of light reactions
Which part of photosynthesis does photolysis
Where are the proteins located that are
associated with the light dependent reactions
In what form do plants store excess glucose
When do CAM
plants fix CO2
cactus, at night
Know the terms associated with the light
dependent reactions of photosynthesis
Where does aerobic resp. end in the eukaryotic
Does aerobic or anaerobic respiration produce
(know steps of cellular respiration)
What has to happen for glycolysis to begin
must have energy
What is produced during glycolysis and where
does it occur
ATP, happens in cytoplasm
How many net ATP molecules are produced during
Where does the Krebs cycle take place
Which step of cellular respiration produces the
most ATP molecules
What molecule in alcoholic fermentation causes
dough to rise
What do muscle cells produce under anaerobic
Sour cream and sour milk are produced by bacteria
that form what
Where could you find anaerobic bacteria
Slow-twitch muscle fibers have many mitochondria
and produce ATP using what process
In this process, the net energy yield is equal
to two molecules of ATP and the final product is ethanol
In this one-step process the final product is
This process yields the most energy
This process involves ETP
The process precedes the Krebs cycle.