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What are some tripeptides that would most likely to be soluble in an organic (hydrophobic) solvent like benzene?
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Describe 5 characteristics that form the basic properties of cells?
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Chapters 1 & 2_214

bio 214

QuestionAnswer
What are some tripeptides that would most likely to be soluble in an organic (hydrophobic) solvent like benzene? N - proline - phenylalanine - leucine - C
Describe 5 characteristics that form the basic properties of cells? 1)Cells are highly complex and Organized 2)Cells posses a genetic code and the means to use it. 3)Cells are capable of producing more of themselves. 4)Cell acquire and utilize energy 5)Cells carry out a variety of Chemical reactions.
Describe 4 characteristics that form the basic properties of cells? 6) Cells engage in Mechanical activies. 7) Cells are able to respond to Stimuli. 8) Cell are capable of self-Regulation. 9) Cells evolve.
The low-molecular-weight building blocks of polymers are called? Monomers
Which amino acid is most likely to be found in the core of a protein? methionine
What is the maximum number of 100 amino acid long polypeptides that could be made? 20^100
True or False? Eukaryotes have membrane-bound organelles; prokaryotes do not. True
True or false? Prokaryotes have relatively little DNA; eukaryotes generally have much more. True
True or false? Eukaryotic chromosomes are linear; prokaryotic chromosomes are circular. True
True or false? Prokaryotic DNA is naked or nearly naked; eukaryotic DNA is usually heavily associated with protein True
What is now thought to have been the genetic material in the first living organisms on Earth? RNA.
From what is the lipid-containing outer envelope surrounding the viral capsid of many animal viruses derived? The cells (plasma) membrane
Proteins are often composed of two or more distinct modules that fold up independently of one another. They often represent parts of a protein that function in a semi-independent manner. What are these modules are called ______. Domains.Domains, in a folded protein, look like independent units in terms of their local folding and because they are observed over and over again in different proteins. Very often each domain has a specific function.
The process by which a relatively unspecialized cell becomes highly specialized is called _______. Differentiation
A molecule that is capable of releasing or donating a hydrogen ion is termed a(n) _______. Acid.
The most stable atoms and thus those that are typically nonreactive are the atoms that have _______. full outer shells
Why are free ionic bonds of little importance and relatively unlikely to form in living organisms? Cells are composed mostly of water, which interferes with ionic bonds between free ions.
What type of protein secondary structure is characterized as being highly extensible because of its coiled structure? Alpha-Helix
What are the Key secondary Structures? Alpha-helix and Beta-Helix.
How do amino acids like hydroxylysine and thyroxine, which are not among the 20 amino acids that are inserted into proteins, get into proteins? They are the result of the alteration of R groups of the 20 amino acids after their incorporation into the polypeptide.
Who was the first person to describe living single cells? Leeuwenhoek
Where are hydrophobic interactions most likely to occur? the core of a water-soluble protein
In a living organism, where are ionic bonds most likely to be the strongest? deep in a protein's core where water is excluded
DNA strands are held together by what type of bond? Hydrogen bond.
What kind of noncovalent interaction is typified by interactions between two molecules that are so close together that they can experience weak attractive forces bonding them together? van der Waals forces.Van der Waals forces are very weak forces between two very close surfaces.
What level of structure in proteins is held together by intermolecular R group interactions? quaternary structure.
What do Primary structures describe? the specific order of amino acids in a polypeptide, written from N- to C- terminus.
What do Secondary structures describe? The three-dimensional arrangement of amino acids ("conformation") of a *portion* of a polypeptide
What do Tertiary structures describe? The three-dimensional arrangement of amino acids ("conformation") of an entire polypeptide.
What do Quaternary structures describe? The molecular interaction between two or more polypeptides.
Created by: avilj0
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