Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/35

Click to flip

35 Cards in this Set

  • Front
  • Back
How is a Disaccharide formed?
Two monosaccharides are linked covalently via dehydration (i.e., a DIMER)
What is the purpose of Polysaccharides?
Storage:
-glycogen (animal)
-starch (plant)

Structural:
-cellulose
-chitin
-Bacterial cell wall
What is cellulose?
Very stable, good for structural components.
What is Glycogen?
storage of glucose in animals
What is starch?
Storage of glucose in plants
The major carbohydrate-storage molecule in plants is:
Starch
The alpha helix is an example of what level of protein structure?
Secondary structure
The number of D-amino acids that occur naturally in proteins is:
Zero
In polysaccharides, sugars are linked together with ____ bonds.
Glycosidic
The major bonds in glycogen are:
Alpha glycosidic bonds
Fatty acids are stored in fat droplets in the form of:
Triglycerides (triacylglycerols)
Based on their structure, steroid hormones could theoretically be synthesized by symply chemically modifying:
Cholesterol
In the primary structure of a protein, amino acids are joined together by:
Covalent-peptide bonds
The interaction of the alpha and beta subunits to form the hemoglobin molecule is an example of:
Quarternary
What is involved in the forming of the tertiary structure of proteins?
H bonds
Hydrophobic interaction
Ionic Bonds
What makes lipids a good barrier?
Many biologically important molecules are not soluble in lipids.
What does it mean for something to be "hydrogenated"
The number of carbon-carbon double bonds in the oil were decreased.
What is the result of hydrogenating something?
The something is now solid at room temperature
If a portion of a phospholipid contains a phosphurus group that has one or more electric charges, that region is:
Hydrophilic
An organic molecule that is soluble in ether (an organic solvent) but is not soluble in water.
Lipids
The monomers that make up polymeric carbohydrates like starch are called:
monosaccharides
What formula do both Glucose and Fructose have?
C6H12O6
Glucose and Fructose are:
isomers
A simple sugar with the formula C5H10O5 is a:
Pentose
Lactose has one glucose unit and one galactose unit. Therefore it is a:
Disaccharide
What is the theoretical number of different proteins that you could make from a total of 50 naturally occuring amino acids?
20^50
What is the nucleotide sequence of the complementary strand of this DNA molecule: A A T G C G A
T T A G C C T
The backbone of nucleic acid molecules is made of:
alternating sugars and phosphate groups.
What portion of the polypeptide chain is responsible for establishing and maintaing the force that is used to stabilize secondary structure?
Carbonyl oxygens
How does the hydrogen bonding in alpha-helices differ from the hydrogen bonding in the beta strands of polypeptides?
alpha bonding is parallel to the axis of the polypeptide
A slight change in the pH environment surrounding a protein could affect the proteins':
1. amino acid sequence
2. overall shape
3. overall structure
4. function
DNA and RNA contain:
Pentoses
Which nitrogenous bases represent a pyrimidine?
1. cytosine
2. thymine
In forming a polynucleotide, which parts of the monomers link up via condensation?
sugar to phosphate
In double-stranded polynucleotides, which parts of the adjacent strands interact chemically and by what chemical process?
Base to Base; hydrogen bonding