Paul was an orphan found wandering a city street when he was 2 years old. At age 52, he began to experience muscle spasms and was having difficulty walking. Which of the following genetic disorders is most probable?

A) PKU
B) CF
C) Huntington's disease
D) Marfan syndrome


C

Biology & Microbiology

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Neutrophils, eosinophils, and basophils are called ________ because they have prominent cytoplasmic inclusions that appear with identifying, characteristic colors in a stained blood smear.

A. granulocytes B. agranulocytes C. monocytes D. leukocytes

Biology & Microbiology

In an effort to clarify and standardize microbial taxonomy, the International Committee on Systematics of Prokaryotes (ICSP) recommends four criteria to meet a "gold standard" for species assignment. Which of the following is not part of the criteria?

A. Melting temperature of the DNA (reflection of the G+C content) within 58°C B. Bioinformatics ecotype analysis showing similar environmental niches C. Whole genome similarity (as determined by DDH) of at least 70% D. Phenotypic similarity to others microorganisms in the group E. Less than 3% divergence in rRNA gene sequence

Biology & Microbiology

What is the correct sequence of phases in mitosis?

a. anaphase ? telophase ? interphase ? prophase ? metaphase b. interphase ? prophase ? metaphase ? anaphase ? telophase c. metaphase ? anaphase ? telophase ? interphase ? prophase d. prophase ? metaphase ? anaphase ? telophase ? interphase

Biology & Microbiology

Which of the following is found only in some bacteria?

A. Cell membrane B. Slime layer C. Cytoskeleton D. Flagella

Biology & Microbiology