A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).

#Question id: 11426

#10. Ecological Principles

Which of the following biomes is associated with a mediterranean climate?

#Question id: 11442

#10. Ecological Principles

Forests dominated primarily by evergreen trees with abundant lianas and epiphytes are found in which of the following biomes?

#Question id: 11443

#10. Ecological Principles

To qualify as a Biodiversity Hotspot, an area must contain__:

A .At least 1,500 species of endemic vascular plants

B .At least 70 percent land covered by vascular plants

C .At least 25 threatened species of mammals

D .At least one protected area such as national park

 Choose the correct option from the codes given below:

#Question id: 11444

#10. Ecological Principles

Ecologist have proposed following explanation to lead maximize biodiversity at tropic.

A. Higher productivity in the tropics allows for more species present

 B. Old communities have greater species than younger community

 C. Natural enemies such as predators and parasite limit competition in the tropics, which allows more species to coexist

D. Very less intensity of disturbances in the tropics promote high succession diversity

#Question id: 11445

#7. System Physiology – Animal

When the mammalian brain compares the actual temperature of the body to the preferred temperature of the body, which general component is being used?

#Question id: 11446

#7. System Physiology – Animal

A physiologist is studying the homeostatic control of blood pH. What type of receptor might be responsible for detecting changes in blood pH?