The major diversification of fishes occurred in the Devonian period; since that time fish have changed little.
Answer the following statement true (T) or false (F)
False
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Which of the following are characteristics of biomes? Check all that apply.
_____ A biome is a large geographical area with distinctive plant and animal groups. _____ Biomes are only located at certain longitudes and latitudes. _____ The climate and geography of a region determines what type of biome can exist in that region. _____ Each biome consists of only one type of ecosystem. _____ Temperate evergreen forest is one of the major biomes.
What is the difference between a first messenger and a second messenger? Give an example of each. What will be an ideal response?
The wobble hypothesis states that:a
more than one ribosome can bind to an mRNA molecule. b. some amino acids are coded for by more than one codon. c. there is more than one stop codon in the genetic code. d. a particular amino acid may be linked to more than one type of tRNA molecule. e. certain tRNA anticodons can pair with more than one codon sequence.
A population with an abundance of resources and no limiting factors will experience
A. a lag phase. B. exponential growth. C. death. D. a stable population.