An organism maintaining homeostasis with respect to sodium ion concentration in the blood would ______sodium excretion in the kidneys when sodium levels were low and ______ sodium excretion when sodium levels were high
a. maintain constant; maintain constant
b. increase; maintain constant
c. increase; decrease
d. decrease; maintain constant
e. decrease; increase
E; To maintain a steady state you need to retain sodium in the kidneys when the levels are low and remove sodium when the levels are high.
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Memories are associated with which of the following parts of the brain?
a. association areas of the cerebellum b. limbic lobe of cerebrum c. suprachiasmatic nucleus d. primary sensory areas of parietal lobes e. cerebral cortex
Which of the following is not a characteristic found among animal species?
A. All of the answer choices are correct. B. They have a developmental stage called a blastula. C. They are heterotrophs. D. They secrete and bind to a substance called the extracellular matrix. E. They are multicellular eukaryotes.
Approximately what percent of the water that
enters a plant is actually used by the plant for metabolism and other processes?
a. 2 b. 10 c. 25 d. 50 e. 90