What do the letters D-N-A stand for?
A) Dioxyribonucleic acid
B) Dioxyribonuclear acid
C) Deoxyribonucleic acid
D) Deoxyrobonuclear acid
C
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Why is the biological species concept useful for Eukarya but not meaningful for Archaea and Bacteria? How are prokaryotic species defined?
What will be an ideal response?
Which of the following lack a nucleus and are
structurally simple? a. eukaryotes b. prokaryotes c. fungi d. algae e. all of these
Gregor Mendel ____
A. cross-bred pea plants with contrasting traits B. claimed that each individual carries a pair of "factors" for a given trait C. discovered that genes are on chromosomes D. did all of these things E. did most, but not all of these things
The tendency of molecules of the same kind to stick together is called ________
A) bonding B) cohesion C) polarity D) adhesion