Biology

1. Identify the phases of the eukaryotic cell cycle. 2. What happens during interphase? 3. Cells go through a series of events that include growth, DNA synthesis and cell division. Why are these events best represented by a cycle diagram? 4. Explain how the cell cycle is regulated. 5. Why is DNA replication essential to the cell cycle? What would happen if DNA was NOT replicated?

Homologous genes within a single species are said to be Multiple Choice orthologs. paralogs. metalogs. xenologs. homologs.

The microbiota are considered a physical innate defense mechanism are located on any parts of the body that open to the environment compete for resources with pathogens all of the above

The "backbone" of the DNA molecule consists of what molecule(s)? SELECT ALL THAT APPLY a phosphate b nitrogen bases C ribose d deoxyribose

Only about __ elements found in living organisms. 10 20 30 40

In a DNA molecule the complementary strands are joined at the nucleotides by hydrogen bonds between what? a nitrogen-containing bases b phosphates C sugars

The pulmonary circuit carries blood to and from the __ Body Surface of the heart Lungs Abdominal organs

What triggers tropomyosin to move? square What allows the myosin head to "cock" forward? square

Multiple Choice Question Tetanic stimulation at a synapse Is due to accumulation of which of the following in the synaptic terminal? Sodium Enzymes Neurotransmitter Calcium

Glaucoma is a leading cause of blindness Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci Which best describes glaucoma? a recessive trait that requires multiple recessive alleles to be expressed a polygenic trait that is influenced by the alleles of several genes a codominant trait that is expressed more often when more dominant alleles are present a dominant trait that depends on the presence of only one of many dominant alleles