Which of the following animals displays radial symmetry?
A) an earthworm
B) a sea anemone
C) a fish
D) a lobster
Answer: B
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Match the feature of protein synthesis that best matches.
A) neither prokaryotic nor eukaryotic protein synthesis B) prokaryotic protein synthesis C) eukaryotic protein synthesis D) both prokaryotic and eukaryotic protein synthesis 1) AUG is the start codon 2) the initial amino acid is N-formylated 3) requires the presence of eIFs for translational initiation 4) peptide bond formation catalyzed by an RNA molecule 5) presence of Shine–Delgarno sequence 6) mRNA is translated 3' ? 5'
The macroalgae are commonly known as:
a. seagrasses. b. seaweeds. c. kelps. d. higher plants. e. phytoplankton.
Which kingdom in the Domain Eukarya contains multicellular photosynthesizers?
A) Plantae B) Bacteria C) Fungi D) Archaea E) Animalia
What is the difference between ATP and ADP?
a. ATP can only be used once and cannot be recycled, whereas ADP is the recyclable form of ATP. b. ADP is an enzyme required to convert ATP into energy. c. ADP contains only two phosphates (adenosine diphosphate), whereas ATP contains three. d. By using ADP and a free-floating phosphate, an organism can rebuild its supply of ATP, but ATP never leads to ADP. e. There is no difference