Which of these passes through the glomerulus without being filtered out of the blood?

a. potassium
b. sodium
c. hemoglobin
d. chlorine


c. hemoglobin

Biology & Microbiology

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When a characteristic is shared by species that do not share a common ancestor this is caused by which of the following?

a. the evolution of homologous characteristics b. the evolution of vestigial characteristics c. the change in allele frequency in the gene pool of the species d. the convergence of form of organisms that share similar environments

Biology & Microbiology

Salivary amylase begins the breakdown of what substance?

a. amino acids b. lipids c. starch d. protein

Biology & Microbiology

What do rod and cone cells do in the eye?

What will be an ideal response?

Biology & Microbiology

Choose the correct sequence of events involving allopolyploidy that gave rise to modern tobacco.

A. duplicate gene loss, hybridization, chromosome doubling B. hybridization, duplicate gene loss, chromosome doubling C. hybridization, chromosome doubling, duplicate gene loss D. chromosome doubling, hybridization, duplicate gene loss

Biology & Microbiology