Ag Biochem Final
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In general, grasses are less sensitive to iron limitation. What is the general name for these chelating compounds?
What eight essential amino acids do adult humans need to obtain in their diets?
Name and describe two things that are present in seeds that make them less nutritious.
- Lectins - bind sugars to make them hard to digest
- Protease inhibitors - inhibit enzymatic digestion of protein
List two vitamins not found in plants.
Deficiency: night blindness
What is the compound found in red wine?
Once a signal is perceived by a receptor, the signal must be relayed to other parts of the cell. What are two common ways plants accomplish this signal transduction for many different receptors?
- Increase in calcium ion concentration
- Protein phosphorylation to relay signals
Blue light is perceived by ( ) receptors. Red light is perceived by ( ) receptors. The chromophore of a phytochrome is a ( ) that undergoes a ( ) to ( ) isomerization.
- tetra pyrole
- trans to cys
Indole acetic acid is moved through the plant through what?
polar auxin transport
Indole acetic acid can be synthesized from what amino acid?
What chemical core is common to all cytokinins?
Adenine (think Adison!)
The last enzyme in ethylene biosynthesis is called what?
What two hormones protect agains herbivory?
- Jasmonic acid
- Salicylic acid
What was the first plant to have its genome completely sequenced?
Plugs mad of ( ) are regularly deposited in the structure as the pollen intracellular contents stream toward the ovule.
Phosphate is stored in many seed types in what chemical form?
Cavities and oil glands (orange peels) can form in living plant tissue through the combination of what two processes?
What hormone reverses senescence in a leaf even after a complete loss of chlorophyll?
What class of herbicides inhibits the first enzymatic step of lipid synthesis in grasses?
What class of herbicides inhibits the fist step in the synthesis of the branched-chain amino acids?
ALS inhibitors (think Tina!)
Glyphosate is a member of which herbicide class?
EPSP synthase inhibitors
DDT is a member of what class of insecticide?
The active ingredient in Raid is a member of which class of insecticides?
Organophosphate insecticides as well as many chemical warfare nerve agents inhibit what enzyme?
List four different biocide resistance mechanisms that can develop over prolonged periods of time:
- the target mutates
- exports the biocide
- behavior modifies (animals)
What are the 6 kinds of acute exposure?
- gas inhalation
- vapor inhalation
- dust inhalation
What are the three legs of the plant disease triangle?
- host susceptibility
- presence of pathogen
- favorable environment
How do plant viruses spread inside a plant?
Through plasmodesmata and phloem
Which term of the water potential expression is affected by the synthesis of these compounds?
solute potential (devil fork)
The primary response to heat stress is to synthesize what class of proteins? what do these proteins do?
Chaperones are synthesized to help keep proteins correctly folded under high temperatures
What two dehydrogenase enzymes are activated under oxygen stress?
Name three types of specialized plant structures in which secondary metabolites are stored.
- Glandular trichomes
- Secretory cavities
- Resin ducts
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