If you see a red flower with very little odor, it is likely pollinated by ____
a. flies
b. birds
c. bats or moths
d. butterflies
e. bees
ANSWER: b
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The tertiary structure of proteins is the three dimensional shape comprised of two or more polypeptides
Indicate whether the statement is true or false.
A package of histones with DNA wrapped around them forms spherical structures called
a. nucleoli. b. chromatin. c. nucleosomes. d. ribosomes. e. lysosomes.
Engelmann concluded that chlorophyll in the chloroplasts is responsible for photosynthesis based on
the following results:a. Spirogyra cells each contain a long, spiral-shaped, emerald-green chloroplast embedded in the cytoplasm. b. The action spectrum of photosynthesis matched the maximum production of oxygen by Spirogyra, observed by the greatest accumulation of bacteria in the blue and red regions of the spectrum. c. Bacteria exposed to the action spectrum for photosynthesis showed no preference to any particular color of light. d. Accessory pigments transfer some of the energy of excitation produced by green light to chlorophyll molecules. e. Protons flow through the ATP synthase complex.
Which clinical feature in a newborn baby girl suggests the possibility of Turner syndrome?
A. Absence of Babinski reflex B. Presence of a webbed neck C. Presence of epicanthal folds D. Absence of irises of both eyes