What is the main reason that duck-billed platypuses are classified as mammals rather than birds? Consider that they possess a bill, as do birds, and lay eggs rather than give birth to live young like other mammals
What will be an ideal response?
Platypuses are classified as monotremes, a group of mammals that lay eggs. Once the young hatch from their eggs, they cling to the belly of the mother and take in milk that oozes from openings in the mother's skin. Platypuses also are covered with fur rather than feathers.
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As electrons move along the electron transport chain, they lose potential energy. How is the energy that is released used by the cell?
A. The energy is used to transport protons against their concentration gradient B. The energy is used to pump electrons along the electron transport chain C. The energy is converted directly into ATP D. The energy is used to pump NAD+ into the cytoplasm so it can be used in glycolysis
Which of the following did Nam-Hai Chua and his colleagues demonstrate to be part of the abscisic
acid response pathway?
a. cyclic ADP-ribose b. Ca2+ c. protein kinases d. cyclic ADP-ribose and protein kinases e. cyclic ADP-ribose, Ca2+ and protein kinases
Pigments, specifically, function for
photosynthesis by which of the following?
a. electron excitation and energy emission b. reflection of light energy c. splitting water into hydrogen and oxygen d. capturing light e. none of these
An enzyme and its substrate interact at a surface crevice on the enzyme called a(n)
a. receptor site. b. active site. c. transition point. d. target site. e. contact point.