The double-stranded DNA molecule can be described as a twisted rope ladder. What component of DNA would be like the steps of the ladder?
A) DNA polymerase
B) nitrogenous bases
C) phosphate groups
D) sugar (deoxyribose) molecules
Ans: B) nitrogenous bases
Biology & Microbiology
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Which one of the following is not part of the endomembrane system?
A. nuclear envelope B. endoplasmic reticulum C. messenger RNA D. Golgi apparatus
Biology & Microbiology
What is the only known eusocial mammal?
A. humans B. naked mole rats C. beavers D. prairie dogs E. honeybees
Biology & Microbiology
The "missing link" between birds and dinosaurs was found when fossils of ________ were unearthed in a German quarry
a. Archaeopteryx b. Phascolarctos cinereus c. Sphenodon d. Saurophaganax
Biology & Microbiology
Once an organism is placed in a specific species, the designation cannot be changed
Indicate whether the statement is true or false
Biology & Microbiology