Chemistry of Life
This type of covalent bond leads to charged ends.
What is a polar covalent bond?
The variety and relatedness of species of these birds led Darwin to his theory of evolution by natural selection.
What are Galapagos finches?
The processs that explains how mitochondria and chloroplasts came to exist as organelles.
What is endosymbiosis or the endosymbiotic theory?
The amphipathic molecule at the heart of membranes
What are phospholipids?
This class of organic compounds always has 2 hydrogen for every 1 oxygen atom.
What are carbohydrates?
This element's tetravalence makes it essential for organic chemistry
What is carbon?
Resources are often described as this to explain why competition must exist.
What is limited?
The length of DNA that is packed into a single human nucleus (± 1 unit of measurement)
What is 6 feet?
What is hydrophobicity?
This level of protein structure involves the amine and carboxyl groups in the polypeptide.
What is secondary level?
The state of matter in which water forms the most average hydrogen bonds at one time
What is solid?
The similarities between forelimb bone structure of all land vertebrate is this type of example of evolutionary relatedness.
What is homology or homologous structures?
The principal site of lipid synthesis and toxin breakdown.
What is the smooth endoplasmic reticulum?
What is facilitated diffusion?
Chemical reactions need to get over this "hill" to begin
What is energy of activation or activation energy?
A process for taking a polymer apart
What is hydrolysis?
All polar animals might be white, which is called this and is not evidence for common ancestry.
What is analogous or an analogy?
The component of cytoskeleton that resists compression and is hollow.
What is a microtubule?
This component of animal membranes reduces and increases fluidity, depending upon the temperature.
What is cholesterol?
This part of an enzyme can bind to an earlier intermediary in a process and alter the shape of the protein.
What is the allosteric site?
When in a hypotonic environment, then this quantity, symbolized with the Greek symbol psi, is more negative within the cell
What is water potential?
This individual is credited with explaining evolution but by a discredited method of acquired traits as well as use and disuse.
Who is Jean Baptiste Lamarck?
Openings that cross the barriers of plant cell walls so that cells can communicate with each other... the endoplasmic reticulum also spans the cells through these openings
What are plasmodesmata?
Gated ion channels enable this event to occur in a neuron, sending the signal onwards.
What is an action potential?
This feature fortifies the tertiary structure of proteins through a covalent bond.
What is a disulfide bridge?