In medicine, the BUN-to-creatinine ratio is the ratio of two serum laboratory values, the blood urea nitrogen (BUN) (mg/dL) and serum creatinine (mg/dL) (Cr).he normal range of urea nitrogen in blood or serum is 5 to 20 mg/dl, or 1.8 to 7.1 mmol urea per liter. The range is wide because of normal variations due to protein intake, endogenous protein catabolism, state of hydration, hepatic urea synthesis, and renal urea excretion.
The two most common types of asexual reproductive spores produced by molds are conidiospores and sporangiospores. Conidiospores are borne externally in chains on an aerial hypha called a conidiophore (see Fig.he two most common types of asexual reproductive spores produced by molds are conidiospores and sporangiospores. Conidiospores are borne externally in chains on an aerial hypha called a conidiophore (see Fig.
Which of the following statements is false?A) Fungi produce sexual spores.B) Fungi produce asexual spores.C) Fungal spores are used in identification of fungi.D) Fungal spores are resting spores to protect the fungus from adverse environmental conditions.E) Fungal spores are for reproduction.hich of the following statements about fungi is false?A) All fungi are unicellular.B) All fungi have eukaryotic cells.C) Fungi are heterotrophic.D) Most fungi are aerobic.E) Few fungi are pathogenic to humans.