Scarlet fever is caused by strains of
A) Streptococcus agalactiae
B) Staphylococcus epidermidis
C) Staphylococcus aureus
D) Streptococcus pyogenes
E) Staphylococcus saprophyticus
D) Streptococcus pyogenes
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The thin flap of tissue that covers the opening of the vagina is called the hymen
Indicate whether the statement is true or false.
Photosynthetic organisms using the oxygenreleasing
pathway appeared on earth about ____ billion years ago.
a. 1.3 b. 1.8 c. 2.3 d. 2.7 e. 3.8
When is a test-cross used?
A. To determine the genes in a dominant organism B. To determine the genes in a codominant organism C. To determine the genes in a recessive organism
Refer to the accompanying figure. What is the process occurring in the cells labeled as 3 in the sequence?
a. mitosis
b. conjugation
c. the first meiotic division
d. exchange of micronucleus
e. the second meiotic division