Scientists unearth a Wooly Mammoth from the Siberian Ice Sheath and discover that a eukaryotic "amoeba"-like cell is still alive. Which component of the cell membrane might contribute to maintaining the fluidity of plasma membranes under freezing conditions?
A. peripheral proteins
B. high levels of long fatty acyl tails within the lipid bilayer
C. high levels of unsaturated fatty acyl tails within the lipid bilayer
D. absence of cholesterol
E. high levels of saturated fatty acyl tails within the lipid bilayer
C. high levels of unsaturated fatty acyl tails within the lipid bilayer
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Which biochemical is generally not found in samples of animal tissue?
a. Protein b. Starch c. Amino acids d. Lipid
A hydrogen atom that has become an ion is
a. a negatively charged ion. b. an isotope. c. unstable. d. a proton. e. an electron
Describe the problems associated with a terrestrial existence and some of the adaptations of some animals for dealing
with these problems. What will be an ideal response?
The structure of C3 plants allows RuBP carboxylase to bind with ____ during photorespiration.
What will be an ideal response?