Hydrogen bonds are very important in the functional shape of:
A) proteins and nucleic acids.
B) nucleic acids.
C) sugars.
D) proteins.
E) fats.
Answer: A
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Why do vascular plants need phloem?
A. because they grow very tall B. because not all parts of the plant are photosynthetic
Match the infectious agent on the left with the appropriate cancer type on the right.
A) Burkitt's lymphoma B) cervical cancer C) bladder cancer D) liver cancer E) stomach cancer 1) Epstein-Barr virus 2) hepatitis B virus 3) human papilloma virus 4) Helicobacter pylori 5) parasitic flatworms
Which of the following is (are) an example(s) of
prokaryotes? a. all protists b. some fungi c. all algae d. all bacteria e. all of these
The DNA in a prokaryotic cell is in the ________ region of the cytoplasm
Fill in the blank(s) with correct word