QUESTION 23 How do hypotheses differ from theories? Theories are well-tested and supported by data Theories are more specific than hypotheses. Hypotheses are educated guesses, while theories are based on observation. Predictions can be made based on theories, but not based on hypotheses..

1. Question 41 (2 points) What does it mean to say that HSV-1 is often latent? It undergoes periods
of inactivity when it resides in trigeminal nerve ganglia and does not cause symptoms. It
undergoes cycles of rapid growth and slower growth, affecting the symptoms that can be
observed. It is normally difficult to detect even when causing an active infection, unless
appropriate screening tests are conducted. It is always present in infected individuals, but lesions
may be small or hidden. Question 42 ( 2 points) Blood agar plates are selective for Gram positive
bacteria because of red cell hemolysis. are differential for Gram positive because of high salt. are
differential for Gram positive bacteria because of red cell hemolysis. are selective for Gram
negative bacteria because of red cell hemolysis. Question 43 (2 points) The cause of strep throat
is Streptococcus pneumoniae. Staphylococcus aureus-beta-hemolytic, group A. Streptococcus
pyogenes-beta-hemolytic, group A. Staphylococcus aureus. Staphylococcus pyogenes-alpha-
hemolytic, group B.