What are lysosomes, and how do they work in the cell?
What will be an ideal response?
Lysosomes are membrane-bound organelles containing about 40 different digestive enzymes. The lysosomes digest bacteria as well as dispose of useless or worn-out parts of the cell.
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All fungi are __________ that secrete digestive
enzymes on organic matter and absorb released nutrients. Fill in the blank(s) with the appropriate word(s).
You are trying to examine the external structures of a bacteria that you isolated from Mars' surface. Which of the following instruments will give you the best information?
a. scanning electron microscope b. transmission electron microscope c. fluorescence microscope d. phase-contrast microscope e. dark-field microscope
Animals that maintain internal body temperature using heat generated by their own metabolism are called
A) endotherms. B) ectotherms. C) reptiles. D) amphibians.
You have homologous pairs of chromosomes in each of your cells. In what way are these pairs of chromosomes identical?
A) They have exactly the same genes. B) They will stay together during meiosis. C) They have genes for the same traits. D) They both come from the same parent.