The vampire squid was placed in the order Vampyromorpha on account of:
a. it has ten arms, but looks like an octopus.
b. it appears to drift rather than actively swim.
c. it has tentacles that can be coiled up.
d. all the above
D
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Neural activity involves transmission of information through electrical events, in contrast endocrine
activity involves
a. transport of hormones in the circulation system to target tissues. b. transport of hormones in neurons to target tissues. c. release of hormones in body fluids for transport. d. changes in neural activity for transport of hormones to target tissues. e. transmission of information through chemical reactions.
Which of the following marks the transition from
glycolysis to the Krebs cycle? a. acetyl-CoA formation b. conversion of PGAL to PGA c. regeneration of reduced NAD+ d. oxidative phosphorylation e. substrate-level phosphorylation
Each antenna complex absorbs light energy and transfers it to its reaction center, which consists of chlorophyll
molecules and ____. a. P680 b. proteins c. carotenoids d. accessory pigments e. thylakoid membranes
Humans are unable to get metabolic energy from cellulose because
A. cellulose is present in large quantities in the gut. B. cellulose contains very little chemical energy. C. cellulose digesting enzymes are absent from the human gut. D. cellulose does not taste good. E. cellulose is not part of a normal diet.