Which organelle is found in eukaryotic cells and is responsible for controlled enzymatic degradation of intracellular substances?

a. Mitochondria
b. Lysosomes
c. Endoplasmic reticulum
d. Golgi body


B
Lysosomes in the cell are responsible for controlled degradation of intracellular substances.

Biology & Microbiology

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When a mixture of debris from killed virulent bacteria and living non-virulent bacteria are injected into mice:

A. the mice are killed because the virulent bacteria are revived. B. the mice survive because none of the living bacteria are virulent. C. the mice survive for a period of a few weeks and then die from an unrelated illness. D. half the mice are killed and the other half survive. E. the mice are killed because the non- virulent bacteria are transformed into virulent bacteria.

Biology & Microbiology

Melatonin is secreted by

a. pancreatic islet cells. b. the thyroid gland. c. the pituitary gland. d. the pineal gland. e. the kidneys.

Biology & Microbiology

Parathyroid hormone causes the blood calcium level to rise, but calcitonin causes those levels to fall. The relationship between the two hormones is described as ________

A) expressive B) antagonistic C) synergistic D) permissive

Biology & Microbiology

A (bacteriocidial/bacteriostatic/minimum) concentration of a drug is one at which microbes survive but are not able to grow and reproduce

What will be an ideal response?

Biology & Microbiology