What can scientists study to gain a better understanding of prokaryotic life on Earth millions—if not billions—of years ago?
A. microfossils of bacteria
B. stromatolites and sediments
C. carbon isotopes in limestone
D. molecular (lipid) fossils
E. All of these answer options are correct.
E
Biology & Microbiology
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Transgenic mice carrying a mutant human SOD1 gene are used as models to study _____________________
Fill in the blank(s) with correct word
Biology & Microbiology
“Genetic fingerprinting” is based on unique
a. nucleotide base pairing b. types of nucleotides c. differences in tandem repeats. d. ratios of purines to pyrimidines e. bonding patterns between nucleotides
Biology & Microbiology
plant cells are joined by narrow, membrane-lined channels called
What will be an ideal response?
Biology & Microbiology
Mycoplasma and Ureaplasma differ from other bacteria because they naturally lack a ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology