the x and y chromosomes are referred to as

What will be an ideal response?


Sex Chromosomes

Biology & Microbiology

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Which of the following traits do ammonia and nitrite oxidizers share?

A) chemoorganotrophic B) autotrophic C) aerobic D) autotrophic and aerobic

Biology & Microbiology

Nitrogen is

A. an important constituent of carbohydrates. B. primarily fixed by fungi. C. turned into ammonia by microorganisms. D. ultimately used in making amino acids and nucleotides. E. turned into ammonia by microorganisms AND ultimately used in making amino acids and nucleotides.

Biology & Microbiology

B cells and T cells that react with self-antigens are destroyed by____

a. apoptosis b. phagocytosis c. cytokinesis d. diakinesis e. endocytosis

Biology & Microbiology

Sunlight is a type of ________ energy

A) electromagnetic B) chemical C) mechanical

Biology & Microbiology