How does a cell rid itself of defective or malfunctioning organelles?
A) Ribosomes remove malfunctioning organelles by degrading the parts.
B) The organelles are engulfed by plastids and stored.
C) Defective organelles accumulate until the cell itself dies.
D) Lysosomes assist in the removal of defective organelles by digesting them.
E) The organelles are exported by phagocytosis.
D
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Archaeal sulfate reducers use elemental sulfur as an electron acceptor.
Answer the following statement true (T) or false (F)
An oil spill occurs, and Greg (a member of the clean up team) suggests adding fertilizer. Why is he making this suggestion?
A. The fertilizer encourages the growth of microbes that can break down the oil. B. The chemicals in the fertilizer digest the oil residues. C. The fertilizer interacts with the oil droplets and renders them harmless. D. The fertilizer volitizes the oil.
You learned that the phenotypic ratio of the F2 generation of a typical test cross was 3:1. The genotypic ratio was 1:2:1. Why is a different ratio seen in a dihybrid cross? What conditions must be met for these parameters to be true?
What will be an ideal response?
The __________ gland produces hormones and is the site where __________ (a kind of white blood cell) mature.
Fill in the blank(s) with the appropriate word(s).