Topics: Microbiology Quiz
Base pairing in DNA involves which of the following pairs of nucleobases?
A. Adenine (A) and guanine (G)
B. Adenine (A) and cytosine (C)
C. Adenine (A) and thymine (T)
D. Cytosine (C) and thymine (T)
Select your answer:

Topics:
Medicine on the Western Front Skeletal System Vocabulary Immunity and Vaccines Dentistry World Health Day Respiratory and Circulatory Surgical Nutrition Muscle System Cell Diversity - Organization, Tissues, Plants and Animals Biotechnology Cell Theory and Cellular Structure Cell Vocabulary Life Processes Excretion Enzymes and Their Functions Upper LimbOther quiz:
Anatomy and Histology of Stomach › ViewThe stomach can be divided into how many major histological regions?
A. 1
B. 2
C. 3
D. 4
Gene Expression › View
What is methylation?
A. The addition of methyl groups to DNA so that it becomes more tightly wound to the histone proteins
B. The removal of methyl groups to inhibit transcription
C. The addition of methyl groups to the histone proteins so that the DNA becomes more loosely bound
D. The removal of methyl groups to enhance transcription