What primary structures package cellular secretions for export from the cell?
A. Golgi bodies
B. Ribosomes
C. Mitochondria
D. Lysosomes
E. Endoplasmic reticula
Answer: A
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RNA viruses require their own supply of certain enzymes because _____
A) host cells rapidly destroy the viruses B) host cells lack enzymes that can replicate the viral genome C) these enzymes translate viral mRNA into proteins D) these enzymes penetrate host cell membranes E) these enzymes cannot be made in host cells
Average human males are most likely to be attracted to women with a waist to hip ratio of 0.72. Women with this waist to hip ratio are also the most fertile. By being attracted to women with a waist to hip ratio, a male is increasing his chances of having children and thus improve his ____ .
A. longevity B. gene flow C. fitness D. allele frequency
Which plasma membrane component provides mechanical strength and maintains the correct amount for rigidity and flexibility?
A) cholesterol B) phospholipids C) protein D) triglycerides E) carbohydrates
Many fish have a ________ system with hair cells that sense pressure waves.
Fill in the blank(s) with the appropriate word(s).