Where are Malpighian tubules found?
a. in mammals
b. in annelids
c. in flatworms
d. in insects
Ans: d. in insects
Biology & Microbiology
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Substances called ________ donate hydrogen ions as they dissolve in water, lowering the pH of the solution
a. acids b. bases c. solvents d. salts
Biology & Microbiology
The region of a chromosome where two sister chromatids are held together is called a
A.) Spindle B.) Centromere C.) Nucleosome D.) Centriole
Biology & Microbiology
Which of these classification categories contains the closest related organisms?
(a). domain (b). genus (c). family (d). phylum (e). kingdom
Biology & Microbiology
Anemia, a condition that results in individuals with a low red blood cell count, can be caused by a number of factors. Why do individuals with defects in the spectrin protein often have this condition?
What will be an ideal response?
Biology & Microbiology