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exam
n100
67
Biology
Undergraduate 1
07/02/2008

Additional Biology Flashcards

 


 

Cards

Term
If potassium were to react with chlorine, what type of bond would be formed? Why?
Definition
It would form an ionic bond since elements in columns 1, 2 and 7 tend to form ionic bonds by losing or ganing an electron. Opposite charges attract. Same formation as Sodium and Chlorine.
Term
In which group of biochemical compounds is the ratio of hydrogen to oxygen 2:1?
Definition
Carbohydrates- the ratio of hydrogen to oxygen in water is also 2:1
Term
Define cell:
Definition
the smallest unit of life
Term
Define Matter
Definition
anything that has mass and occupies space
Term
Define Element
Definition
smallest unit of matter (atom) that has special physical characteristics
Term
Define Biosphere
Definition
a combonation of all the ecosystems (earth)
Term
What is the purpose of the ATP and NADPH in photosynthesis?
Definition
The product of ATP and NADPH in the light dependent reactions provide the energy that drives the formation of sugar during the light independent reaction (Calvin Cycle)
Term
Write the overall equation for photosynthesis. Label all the reactants AND products. Above the arrow in the equation, note the main thing that is needed to start these reactions.
Definition

6CO2  +  6H20  =  C6H12O6  +  6O2

     carbon dioxide       water        glucose        oxygen                 

Term
According to biology, does vitalism or mechanism more characterize living things?
Definition
Mechanism better explains living things. All living things are governed by the same natural laws that govern the nonliving world.
Term
What type of chemical reaction would cause a number of single sugars such as glucose to bond together in the formation of starch?
Definition
Dehydration synthesis
Term

As part of scince fair a young researcher wanted to analyze the effects of caffine on lab mice. Fill in the steps below, identify the control and identify the dependent and independent variables.

Problem Statement-

hypothesis-

research-

experimental design-

data-

conclusion-

Definition

Problem Statement- how will caffine affect mice?

hypothesis- caffine will cause mice to become hyperactive.

research- do a literature review to determine the effects of caffeine.

experimental design- set up an experiment with a control.

data- collect data on mass, length, and food+water consumption.

conclusion- caffeine makes micee hyperactive.
Term
Draw a diagram and identify an atom with 8 protons, 8 neutrons and 8 electrons.
Definition
this is an oxygen atom.
Term

describe the structure and function of:

Chloroplasts:

Definition
double membrane bound, stacks of grana, space called lumen and the function is to carry out photosynthesis
Term

describe the structure and function of:

Mitochondria:

Definition
double membrane bound, plasmid (DNA), and the function is to carry out the process of photosynthesis.
Term

describe the structure and function of:

Peroxisomes:

Definition
membrane bound organelle that packages hydrogen peroxide.
Term

describe the structure and function of:

Lysosomes:

Definition
memberane bound organelle that packages digestive enzymes.
Term
list the 7 levels of classification given in class in order and know which groups include other groups.
Definition

Kingdom, phylum, class, order, family, genus, species.

 

Kingdom includes phyla, phyla includes class, class includes family, family includes genuses and genuses include species.

Term
List the three major parts of resperation and tell how many ATPs are made as a result of each.
Definition

Glycolysis- 8 ATPs

Krebs Cycle- 2 ATPs

Electron Transport Chain- 28 ATPs

Term
becuase of the way resperation takes place in bacteria, which missing organelle is most responsible for bacterias lack in size, why?
Definition
since the mitochondra are missing, the bacteria cannot produce the same large numbers of ATP as a eukaryotic cell could.
Term
define diffusion and osmosis.
Definition

diffusion is the movement of substances from an area of higher to an area of lower concentration.

 

osmosis is the diffusion of water.

Term

draw a general formula for an amino acid and identify the following

 

carbon

amine group

carboxyl group

r group

Definition
check notes #15
Term
Which part of the light spectrum as the least effect on photosynthesis, why? what happens with this part of the spectrum?
Definition
green, green light is reflected and does not excite electrions providing enegry to excite electrons.
Term
product of aerobic resperation in glycolysis:
Definition
pyruvic acid
Term
product of anaerobic resperation in a yeast or bacterial cell during glycolysis:
Definition
ethyl alcohol (ethanol)
Term
product of anaerobic resperation on an active muscle cell
Definition
lactic acid
Term
draw a bacterial cell and label
Definition
see notes #18
Term
draw a virus and label parts
Definition
see notes #19
Term
define atom
Definition
the smallest, recognizable particle of matter that cannot be subdivided into smaller units.
Term
define element
Definition
a substance made up of a single atom
Term
define molecule
Definition
two or more atoms chemically combined
Term
define compound
Definition
two or more DIFFERENT atoms chemically combined
Term

rank the type of bonds in terms of their ability to be broken down

 

covalent

ionic 

hydrogen

polar covalent

Definition

covalent strongest

ionic next strongest

polar covalent next strongest

hydrogen weakest

Term

write the empirical formual for each of the following groups of carbohydrates


 

monosaccharides

disaccharides

polysaccharides
Definition

 

monosaccharides C6H12O6

disaccharides C12H22O11

polysaccharides (C6H10O5)x
Term
identify the two suffixes used for sugars and enzymes:
Definition
-ose=sugar    -ase=enzyme
Term
Make a chart below that compares the genral characteristics of prokaryotic and eukaryotic cells
Definition

prokaryotic- memberane bound, no nucleaus, naked chromosome, pasimid, ribisomes, cell wall and membrane, flagella, no other organelles, makes low ATP

 

eukaryotic- membrane bound, nucleus present, chromosomes within nucleaus, all organelles present, produce a lot of ATP by aerobic resperation.

Term
understand a periodic table
Definition
atomic number is in the lower left, the atomic mass is in the upper left, the number of neutrons is determind by subtracting the atomic number from the atomic mass
Term
where is the greatest amount of ATP produced during resperation as a result of oxidation reduction reaction.
Definition
the Kreb cycle workinf with the electron transport system through oxidation phosphorylation.
Term
draw an enzyme model that illustrates the enzyme, the substrate, the active site, the enzyme substrate complex and the final product.
Definition
 use the pacman model from class
Term
after death, a process  called "autolysis" occurs within cells of the host organism. describe how this happens and which organelles would be most responsible.
Definition
after a cell dies, the lysosomes realese digestive enztmes into the cell which eat up the tissue from within.
Term
define covalent bond
Definition
bond in which electrons are shared equally
Term
define polar covalent bond
Definition
bond in whcih electrons are shared equally with the net result of a charge forming on opposite ends of the atom
Term
define ionic bond
Definition
bond in which electrons are gained or lost by an atom forming a positive or negative ion. The oppositely charged ions attract each other and form an ionic bond.
Term
define hydrogen bond
Definition
weak attraction between adjacent water molecules. The ozygen of one water molecule attracts the hydrogen of another water molecule.
Term
what is rubisco, what is its significantce and in which biochemical set of reactions will it be found?
Definition
Rubisco is the most abundant enzyme in the world and is is responsible for catalyzing the light independent reaction of photosynthesis.
Term
draw a general structual formula for a lipid. how many glycerols and how many fatty acids are found in this lipid molocule.
Definition
see notes. there will be 1 glycerol and 3 fallty acids.
Term
within the chloroplast, where would the greatest number of hydrogen protons be found?
Definition
in the lumen
Term
define evolution
Definition
evolution si the gradual change of living things over time
Term

describe the structure and function of:

 lysomes

Definition
single membrame organelle, stores digestive enzymes
Term

describe the structure and function of:

 ribosomes

Definition
small, round organelle responsible for protein synthesis
Term

describe the structure and function of:

 nucleolus

Definition
small, round organelle in the nucleous that is responsible for making robosomes
Term

describe the structure and function of:

 cell membrane

Definition
selectively permeable, protects cell, controls what enters and leave cell
Term

describe the structure and function of:

 mitochondrion

Definition
double membrane bound organelle, site of citic acid cycle, oxidative phosphorylation, and production of great amount of ATP occurs here.
Term

which is not a characteristic of an enzyme

 

they are protein

low activation energy

charged

specific

recycled

Definition
they are not charged
Term
the law of conservation of matter-
Definition
matter is neither created or destroyed, but changed from one form to another
Term
first law of thermodynamics
Definition
energy is neither created or destroyed but changed from one form to another
Term
second law of thermodynamics
Definition
this is the law of entropy. energy tends to be lost as you move from one trophic level to another and matter tends to become disorganized over time without input of energy.
Term
write out the overall equation of resperation
Definition
C6H12O6 + 6O2 = 6CO2  + 6H2O + 36ATPs
Term
why is carbon the most important of all elements in the structural formation of living cells and tissue.
Definition
carbon is capable of forming four bonds, the most number of bonds an atom can form. therfore, it provides the oppertunity to form the greatest number of combinations for molecules.
Term
Water: why is it called a universal solvent
Definition
is will dissolve anything ionic or polar
Term
Water: why is water called a polar molecule
Definition
it has a positive and negative end
Term
Water: why is it an advantage for water to have a wide temperature range as a liquid.
Definition
it is unlikely to reach a solid or gaseas state in living tissue
Term
Water: why does water serve as both a reactant and product in import metabolic pathways
Definition
water is used as a reactant during dehydration synthesis and appears as a product during hydrolysis
Term
after chewing crackers for 5 min without swollowing you will notice that they start to tast sweet. why?
Definition
the reaction os hydrolysis. polysaccharides ae broken down into monosaccharides. the monosaccharides are simple sugars that taste sweet.
Term
define denature. what happens to an enzyme if you expose it to temp or pH extremes
Definition
denature means to destroy the structure of the protein so that is is no longer effective in its function. extremes in temp or or pH denatue a protein.
Term
what is the location and function of cytoplasm?
Definition
lacated between the nucleus and cytoplasm. it provides the support to suspend the organelles. it also is a soup in which the many vital molecules and enzymes are found. the pressre of the cytoplasm against the cell membrane also provides a type of support.
Term
define homeostasis
Definition
it is the balence maintained within a living organism.
Term
What is the most important promary source of energy for all living things?
Definition
sunlight
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