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Write down the two main mechanisms for making sure an adequate amount of neurotransmitter in the synaptic cleft? Comprise three enzymes in the first mechanism.
Write down the basic units of enzymes and explain how are these units arranged and under what conditions do enzymes work best?
Explain the energetic of catalysis in simplest terms? How do enzymes influence forward and reverse reaction rate and what does this signifies?
Compare and contrast the competitive and noncompetitive in terms of: A) How Km is affected in the presence of inhibitor. B) How Vmax is affected in presence of inhibitor.
A new enzyme you are studying has a Km of 7.0mM and a kcat of 126 per second. Determine the initial rate of reaction in units mM/min when 9.3 nanometer enzyme is reacted with the 2.7 mM substrate.
Find out which of the given explains the type of the reaction(s) catalyzed: condensation (carbon-carbon bond formation); dehydration (loss of water); hydration (addition of water); decarboxylation (
An enzyme and its substrate are joined in a test tube however no product is formed. The other molecule is added to the tube, and now the product is formed at the normal rate. Give two reasons.
An enzyme catalyzes a reaction at a velocity of 20 umol/min when the concentration of substrate (S) is 0.01 M. The Km for this substrate is 1 x 10-5 M. supposing that Michaelis-Menten kinetics is fo
Define the words anabolic steroid, synthetic steroid and human growth hormone. Describe how they are similar and how they are dissimilar.
Explain how pancreatic hormones example: insulin and glucagon affect blood glucose levels following a meal and when example fasted in the morning.
Fumarase deficiency is an extremely uncommon disease in humans. People with this disease can survive though they are significantly influenced.
What is the most serious threat to amphibians.
Describe the full "loop" from activation of a mechanoreceptor in the arm to the voluntary movement of the arm as a consequence (i.e. explain how somatosensory and motor information are conveyed with
When a male lion successfully challenges another and takes over his pride, one of the first things the new lion does is to kill all of the cubs in the pride. Why would this behavior have evolved? Ho
Some species of lungfish breathe only air; they have no gills, and will drown if forced underwater. Why might it be an advantage for lungfish to breathe air even though they live in water.
Long term food choice exists in a continuum between pure specialists on one end and complete generalists on the other end. Where does your diet fall on this continuum?Explain your answer.
Individuals are often specialized in their diets in the short term than they are in the long term. What is a search image? How does it facilitate short-term specialization.
Suppose a tree squirrel living in the conifer forests near La Grande eats seeds that it extracts from pine cones and fungi that it finds on the forest floor.
Why individuals remain in subordinate situations (for example peripheral males at a lek or lowest tanking individual in a social group lie a wolf pack or lion pride) where they had limited access to
Metabolism uses various ways to ensure that 2 opposing pathways do not occur at the same time. For the following pair of pathways list 2 ways (different cell location, allosteric effector, covalent
Should this right extend to plants and microorganisms? What about the Anopheles mosquito, which transmits malaria? Tigers that sometimes kill people in India? Bacteria that cause typhoid fever? Defe
Cite six ways in which fungi are (a) beneficial to humans, and (b) harmful to humans.
Although amphibians were the first animals to move onto dry land, they were still dependent on water for reproduction and lor respiration. What evolutionary adaptations allowed reptiles to become th
A marine biologist has dredged up an unknown animal from the seafloor. Describe some of the characteristics she should look at to determine the phylum to which the animal should be assigned.
One group has more species than all the other groups, give the name of the Phylum and examples of species found in this group.