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While studying transpiration, a scientist used a dentrometer to record the small daily changes in the diameter of a tree trunk at two differnet heights( 2 meters and 3 meters) above the ground at the same time. The diameter decreased in the daytime. This decrease happened first at a higher location. Dicuss the following in relation to water movement in plants.
A) Identify how 2 different environmental factors could be envoled in the daily fluctuations?
B) Discuss the mechanisms involved in the uptake and transport of water by vascular plants?
C) Discuss the role of water in the normal functioning of plants?
What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?
3rd-base wobble allows some tRNAs to recognize more than one mRNA codon. Determine the minimal number of tRNA molecules necessary to recognize the following amino acids?
A recipe calls for 10 ml of a 25mM stock of EDTA. However, all you have on hand is a five hundred mM stock. How much more concentrated is what you have relative to what the recipe calls for?
In a gene expression experiment for determining biochemical pathways in Serratia marcescens, are the mutant strains utilized in this experiment true auxotrophs? Why or why not?
In what way does the fertilization and development of the conifer seed differ from that of the angiosperm?
Explain the subdivisions and the sub-subdivisions of the ventral cavity and name an organ found in each.
Which cytoskeletal proteins are important constituents of the contractile structures that form the cleavage furrows involved in animal cell cytokinesis?
What is an example of energy coupling starting with Glucose as the reactant? And what is an example of energy coupling starting with ATP as well?
Select a neurotransmitter and explain how you would know whether a particular neuron releases this neurotransmitter. Also discuss at least 4 drugs that are used to alter the effects of the neurotransmitter and what they do.
Which of the following is not found in a eukaryotic promoter?
During sleep, relay neurons in the thalamus reduce information reaching the cerebrum by altering their membrane potential. Are these neurons more likely to have depolarized or hyperpolarized?
When performing the Kirby-Bauer disk diffusion technique what do the microcolonies in the zone of inhibition represent?
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