What are two ways to determine a fossil's age

Which of these parts of an animal would most likely fossilize? A.) skin B.) bones C.) muscles D.) internal organs

Which of the following Earth spheres does the process of weathering most affect?

Why is using antimicrobial drugs to kill large numbers of gram-negative bacteria in a short period of time a cause for medical concern?

True or false: animals perform respiration to create energy, however because plants perform photosynthesis, they do not have to perform respiration.

Describe systemic circulation.

Immune privileged sites, such as the brain, the eye, and the testis, are often the targets of autoimmune attack.

How does the size of lactobacillus compared with that of oscillatoria and gloeocapsa?

g A polypeptide has the following amino acid sequence: Met-Ala-Gln-Arg-Glu-Leu. This polypeptide was mutated to produce the following mutant sequence: Met-Ala - Gln-Gly-Glu-Leu.

Where is a trench formed

Which statement best describes an operon? a. several genes, next to each other in eukaryotic DNA, that are transcribed as a single piece of mRNA b. a single gene in prokaryotic DNA that is transcribed as a single piece of mRNA c.