Hormones are chemicals that

Patients with type 2 diabetes

removal of an ovary: ____________________

Secreted by the anterior pituitary gland to promote ovulation:

ovarian hormone that sustains pregnancy: ____________________

A __________ keeps the covers from pushing down on a patient’s feet.

You visit your grandmother, a skilled gardener, to discuss acidity issues in your garden. (7 pts) She mentions that she buys large chunks of limestone to raise the pH in her garden. You decide to throw large chunks of limestone in your garden too but very little changes in the following year. When you mention this to her, she asks why you didn’t do anything to your limestone chunks before applying them to your garden. Explain 1) what she is implying you do with your limestone chunks to increase the effectiveness of liming, 2) why this would help improve liming efficiency, and 3) another property of the limestone that influences the effectiveness of liming. (6 pts) Shortly after this, your neighbor suggests substituting your limestone for shrimp shells that contain nitrogen, phosphorus, and some calcium carbonate. Describe if you will see the same effect on soil pH after you apply a similar quantity of shrimp shells vs. limestone for both direction (e.g., decrease vs. increase in soil pH) and magnitude of change, and why (or why not). (7 pts) After a few years, you over-lime your soil and need to decrease the soil pH. Describe 1) two reasons why you would want to decrease soil pH when pH gets too high and 2) one strategy/input you could use to decrease the soil pH to a more adequate level.

Many nutrient cycling processes acidify the soil. Describe how two of these processes from at least two cycles acidify the soil (i.e., they can’t be both from the N cycle).

You are managing S inputs in a legume crop. (7 pts) You add elemental sulfur to this well-aerated soil to match crop demand. By which process does elemental S gets transformed, and what is the S-containing end product (hint: it’s an ion) of this transformation? This process has a strong effect on either soil pH or soil salinity – which property is most affected by inputs of elemental S, and how? (6 pts) Growing a legume requires “high” levels of a particular micronutrient for the nitrogenase enzyme, a key enzyme involved in N-fixation. What is this micronutrient (hint: it’s not iron, which is also contained in nitrogenase, and it’s not sulfur, which is a macronutrient)? Describe how the availability of this micronutrient will be affected by changes in the other soil property (i.e., pH or salinity) described in A. (7 pts) Given the effects you described in A and B, how would you expect biological N-fixation to respond to your addition of elemental S? Also, describe one management practice you could implement to mitigate these effects.

Which of the following types of wound drainage is normal when an open wound first occurs?