On a global scale, energy _______ ecosystems whereas chemical elements __________ ecosystems.
a. is biologically magnified in... are recycled in
b. is dissipated in.... flow through
c. flows through... are recycled in
d. is continuously supplied through... are continuously removed through
e. is recycled in.... flow through
Ans: c. flows through... are recycled in
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Answer the following statements true (T) or false (F)
1. During hibernation, a bear would be expected to be in the postabsorptive state in terms of nutrient utilization. 2. Triglycerides do not need to be chemically altered or broken down to cross the intestinal epithelium. 3. Animals have the ability to generate glucose from proteins during prolonged postabsorptive states. 4. The term "glucose sparing" refers to the increase in fat utilization seen in most tissues and organs during periods of low glucose availability. 5. Insulin stimulates glycogenolysis and gluconeogenesis by the liver.
________ is the major storage polysaccharide for animals, while ________ is the major storage polysaccharide for plants
Fill in the blank with correct word.
When a blood vessel is cut, why does vasoconstriction take place?
a. to expose collagen fibers to which platelets can adhere b. to trigger the release of platelets from the surrounding tissues c. to initiate the activation of thrombin d. to entrap white blood cells e. to reduce the flow of blood
Asexual reproduction and sexual reproduction are different in that
A) individuals reproducing asexually transmit 100% of their genes to their progeny, whereas individuals reproducing sexually only transmit 50%. B) asexual reproduction produces offspring that are genetically identical to the parents, whereas sexual reproduction gives rise to genetically distinct offspring. C) asexual reproduction involves a single parent, whereas sexual reproduction involves two. D) asexual reproduction only requires mitosis, whereas sexual reproduction always involves meiosis. E) all of the above