Currently, two extant elephant species (X and Y) are classified in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?
A) Species X and Y are not related to species Z.
B) Species X and Y share a greater number of homologies with each other than either does with species Z.
C) Species X and Y share a common ancestor that is alive today.
D) Species X and Y are the result of artificial selection.
B
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A. H2O B. carbon dioxide C. ATP D. NADPH E. oxygen
Describe how the amphipathic nature of phospholipids leads to the formation of the phospholipid bilayer organization observed in membrane structure. Based upon this information, how would you design a drug delivery system to cross the cell membrane?
What will be an ideal response?
Why are C4 plants able to photosynthesize with no apparent photorespiration?
A) They do not participate in the Calvin cycle. B) They use PEP carboxylase to initially fix CO2. C) They conserve water more efficiently. D) They exclude oxygen from their tissues.
Prolactin stimulates the breasts to produce milk, which is released in response to oxytocin.
Answer the following statement true (T) or false (F)