What are protocells and why are they considered important?
What will be an ideal response?
Protocells are the hypothesized precursors of cells billions of years ago. Protocells would have been
organic molecules assembled into aggregates that became bounded by lipid bilayer membranes.
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Answer the following statements true (T) or false (F)
1. Unmethylated CpG islands are correlated with inactive genes. 2. Loosely packed chromatin is said to be in an open conformation. 3. Alternative versions of proteins often have similar functions. 4. MicroRNAs increase the rate of mRNA translation.
In most species, all mRNA transcripts begin with _____
a. methionine b. a ribosome c. AUG d. the P site e. an anticodon
With absolutely no exception, all organisms use the same genetic code for the production of proteins
Indicate whether the statement is true or false
Molluscs share a three-part body plan consisting of
A. eyespots, a digestive system, and a nervous system. B. a corona, stomach, and intestines. C. a scolex, proglottids, and an anus. D. a visceral mass, mantle, and foot.