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8-29 quiz 3
quiz 3
85
Biology
Undergraduate 1
09/01/2013

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Term
what type of carb is a monomer? (1)
Definition
a monosaccharide
Term
what type of carb is a compound? (2)
Definition
disaccharide
Term
what type of carb is a complex carb? (3)
Definition
polysaccharide
Term
what is a monosaccharide with 5 carbons called?
Definition
pentose
Term
what is a monosaccharide with 6 carbons called?
Definition
hexose
Term
most monosaccharides contain how many carbons?
Definition
5/6
Term
what is the ratio of CHO in monosaccharides?
example?
Definition
1:2:1
C6H12O6
Term
what is the similarity and difference between glucose and fructose?
Definition
similarity: chemical formula (C6H12O6)
difference: where bonds lie
Term
what is a disaccharide made of? (2 of them joined by....)
Definition
2 monosaccharides joined by a dehydration reaction
Term
what are 3 common disaccharides?
Definition
maltose
lactose
sucrose
Term
what is maltose composed of?
Definition
2 glucose
Term
what is lactose composed of?
Definition
galactose and glucose
Term
what is sucrose composed of?
Definition
fructose and glucose
Term
what was the sweetest compound in our experiment and why?
Definition
fructose - it is a monosaccharide so it takes less time to break down
Term
polysaccharides are a lot of what?
Definition
monosaccharides
Term
what do polysaccharides function for?
Definition
to store energy
Term
how is energy released from polysaccharides?
Definition
hydrolysis
Term
what are polysaccharides for cells?
Definition
building material
Term
what are the 3 carbs most important to animals?
Definition
starch
glycogen
cellulose
Term
what is the carb most important for insects? what is it used for?
Definition
chitin
exoskeleton
Term
can people digest chitin?
Definition
no
Term
what is glycogen the storage of?
Definition
glucose
Term
what makes up plant cell walls? (carb)
Definition
cellulose
Term
what is the most abundant organic compound on earth?
Definition
cellulose
Term
what makes up cell walls? (fibers)
Definition
microfibrils
Term
what is stored for energy by plants?
Definition
starch
Term
what stains starch blue?
Definition
iodine
Term
indicator solutions tell what?
Definition
whether something is present or not
Term
what does a color change of an indicator solution usually denote?
Definition
positive result
Term
what does a lack of color change of an indicator solution usually denote?
Definition
negative result
Term
what color is iodine?
Definition
yellow gold
Term
what color does iodine turn when it comes into contact with starch?
Definition
brown/purple
Term
what does iodine test for?
Definition
starch
Term
was the experiment with the saltines, notebook paper, and filter paper qualitative or quantitative?
Definition
qualitative
Term
was the experiment with drops of starch and iodine qualitative or quantitative?
Definition
quantitative
Term
what indicator solution detects simple sugars (monosaccharides)
Definition
Benedict's solution
Term
what does Benedict's solution test for?
Definition
simple sugars or monosaccharides
Term
what color is Benedict's solution before tested?
Definition
blue
Term
what color does Benedict's solution turn for a positive test?
Definition
yellow/orange/brown
Term
what is a qualitative test using Benedict's solution?
Definition
using different types of sugars
Term
what is a quantitative test using Benedict's solution?
Definition
using different concentrations of one sugar
Term
which indicator solutions do you have to heat to get a result?
Definition
Benedict's solution and Ninhydrin
Term
what are lipids in relation to water?
Definition
hydrophobic
Term
what are the 2 major types of lipids and what is their state of matter at room temp?
Definition
animal fats; solid
plant oils; liquid (aromatherapy)
Term
fats are assembled from smaller molecules through what process?
Definition
dehydration
Term
what molecule do lipids consist largely of?
Definition
triglyceride
Term
what is triglyceride made of? what are they connected to?
Definition
3 carbon glycerol connected to a long fatty acid chain
Term
what does the creation of triglyceride produce?
Definition
3 H20 molecules
Term
why do desert animals store fat?
Definition
when the triglyceride comes together, 3 H2O molecules are realeased
Term
what are the 3 major functions of fat on an animal?
Definition
1. insulation
2. protection
3. energy storage
Term
what is the indicator solution for fats?
Definition
sudan III dye
Term
what does sudan III dye indicate?
Definition
fats
Term
what does sudan III dye stain?
Definition
the CH2 groups of lipids
Term
what color is sudan 3?
Definition
red
Term
what is a positive result for a sudan 3 test?
Definition
red dye absorbs
Term
what is a negative result for sudan 3?
Definition
red dissolves
Term
are tests with sudan 3 qualitative or quantitative?
Definition
qualitative
Term
what are 2 important lipids?
Definition
phospholipids steroids (cholesterol, estrogen, testosterone, etc)
Term
what is the outside layer of a cell membrane's relation ship with water?
Definition
hydrophilic (loves water)
Term
what is the inside layer of a cell membrane's relationship with water?
Definition
hydrophobic (hates water)
Term
what is the outside layer of the cell membrane made of?
Definition
phosphate groups
Term
what is the inside layer of the cell membrane made of?
Definition
fatty acid
Term
the cell membrane is composed of _____ replaced with ____ at _____ position
Definition
fatty acid, phosphate group, 3rd
Term
steroids/cholesterol are lipids w/C skeleton consisting of ____ fused C rings.
Definition
4
Term
different steroids are created by varying what?
Definition
function groups
Term
what does cholesterol function as in the cell membrane?
Definition
glue, keeps the cell membrane in tact
Term
what is the most complex of all macromolecules?
Definition
proteins
Term
what can proteins do/what do they function as?
Definition
virtually everything!
Term
how many proteins do humans use?
Definition
tens of thousands, each with own structure and function
Term
how any amino acids are there?
Definition
20
Term
what makes up proteins completely?
Definition
amino acids
Term
how many amino acids do humans produce?
Definition
10 of the 20
Term
H H O
\ | /
N - C - C in this molecule, what changes from
/ | \ one amino acid to the other?
H | OH
|
side group
Definition
the side group
Term
H H O
\ | /
N - C - C what does this molecule represent?
/ | \
H | OH
|
side group
Definition
amino acid
Term
what reaction puts together amino acids?
Definition
dehydration process
Term
what bond connects amino acids?
Definition
peptide bond
Term
what is a peptide with 2 amino acids called?
Definition
dipeptide
Term
what is a peptide with 3 amino acids called?
Definition
tripeptide
Term
what is a peptide with 4 amino acids called?
Definition
polypeptide
Term
what are amino acids broken down by?
Definition
hydrolysis
Term
what does the Ninhydrin test test for?
Definition
only ONE amino acid
Term
what denotes a positive test of Ninhydrin?
Definition
purple color
Term
what denotes a negative test of Ninhydrin?
Definition
nothing
Term
what is the only AA the has a different Ninhydrin result?
what color does it turn?
Definition
proline
yellow
Term
is the Ninhydrin test qualitative or quantitative?
Definition
qualitative
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