Fossils of prokaryotic cells are dated as far back as approximately ________ billion years ago.
A. 2.8
B. 3.8
C. 1.5
D. 4.8
Answer: B
Biology & Microbiology
You might also like to view...
The protostomes are divided into two monophyletic groups, the
A. Lophotrochozoa and Ecdysozoa B. Protostomia and Deuterostomia C. Chordata and Hemichordata D. Eumetazoa and Protozoa
Biology & Microbiology
Which of the following is not an activated monomer?
A) adenosine triphosphate B) glucose-6-phosphate C) aminoacyl tRNA D) amino acid E) uracil triphosphate
Biology & Microbiology
Understanding why normal cells commit suicide (apoptosis) may be the key to treating some forms of cancer
Indicate whether the statement is true or false
Biology & Microbiology
Which phrase best describes the process of meiosis?
A.) occurs in body cells B.) results in genetically identical cells C.) happens only in haploid cells D.) produces haploid gametes
Biology & Microbiology