Discuss why many scientists consider RNA to have been the basis for early forms of life
What will be an ideal response?
RNA can make exact copies of itself, and it has been shown to sometimes act as an enzyme for biochemical reactions. The ability to reproduce and the ability to enzymatically catalyze reactions are important characteristics of cells.
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________ molecules deliver amino acids to ribosomes during translation.
A. Ribosomal RNA (rRNA) B. Transfer RNA (tRNA) C. Messenger RNA (mRNA) D. Heterogeneous nuclear RNA (hnRNA)
The helix structure on the right of the above figure
represents a. DNA. b. RNA. c. lipid. d. protein. e. phospholipid.
Panting in mammals is the equivalent of which process in birds?
a. panting b. sweating c. estivation d. acclimatization e. torpor
________ is the first product of the Krebs cycle
Fill in the blank(s) with correct word