The most common causative agent of otitis media is ________.

A. Aspergillus fumigatus
B. Streptococcus pneumoniae
C. Candida albicans
D. Haemophilus influenzae
E. Corynebacterium diphtheriae


Answer: B

Biology & Microbiology

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Which statement correctly describes the inheritance of sex chromosomes?

a. A woman will pass on a specific X chromosome to all of her daughters. b. A woman will pass on an X chromosome to half of her children. c. A woman will pass on an X chromosome to all of her children. d. A woman’s genetic contribution determines the sex of her children. e. A man will pass on an X chromosome to all of his children.

Biology & Microbiology

The function of synovial fluid is to:

a. store calcium b. reduce friction c. produce marrow d. carry nutrients e. resorb bone

Biology & Microbiology

The secretion of which hormone decreases when calcium blood levels increase?

a. calcitonin b. parathyroid hormone c. thyroid hormone d. epinephrine e. norepinephrine

Biology & Microbiology

What types of genes are transcribed by RNA polymerase I? What is the structure of the promoter of such genes?

What will be an ideal response?

Biology & Microbiology