The breakdown of proteins in animals results in what type of waste product(s)?
What will be an ideal response?
Proteins are broken down to the nitrogen containing molecules of ammonia, urea or uric acid and
excreted. The particular molecule or combination of molecules depends on a balance among toxicity,
water conservation, and energy requirements.
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GCCCAAAG is a molecule of
A. RNA. B. DNA. C. protein. D. cannot tell as written.
Which of the following choices CORRECTLY ranks by the routes of water loss from largest source of water loss to smallest source of water loss, by their average volume?
A. urine, skin, feces, lungs B. urine, skin, lungs, feces, C. urine, feces, skin, lungs D. skin, urine, lungs, feces
The earliest discovered fossils are of ________ dating back to ________ years ago
A) single-celled eukaryotes; 4.5 billion B) prokaryotes; 3.5 billion C) algae; 1 billion D) fish; 600 million
____________ is a thick fluid inside the chloroplast membrane. Suspended within it are disk-like membranous sacs known as _____________.
A) The stroma; thylakoids B) The stroma; grana C) Cytoplasm; mitochondria D) Cytoplasm; organelles E) Cytoplasm; stroma