All MCAT Biology Resources
Example Questions
Example Question #261 : Organic Chemistry, Biochemistry, And Metabolism
How many hydrogen bonds does it take to hold adenine and thymine together? Cytosine and guanine?
Possible Answers:
2; 3
2; 4
1; 3
1; 2
2; 2
Correct answer:
2; 3
Explanation:
In order to hold a base pair together, the hydrogen bond(s) between the bases must be stable. This stability depends on many factors, such as the size and shape of the bases. The adenine-thymine base pair is most stable when held together by 2 hydrogen bonds, while the cytosine-guanine base pair is most stable when held together by 3 hydrogen bonds.
Christy
Certified Tutor
Certified Tutor
Northern Michigan University, Bachelor in Arts, Graphic Design. Northern Michigan University, Bachelor of Science, Premedicine.
Nora
Certified Tutor
Certified Tutor
University of Cincinnati-Main Campus, Bachelor of Technology, Biomedical Sciences.
All MCAT Biology Resources
Popular Subjects
Spanish Tutors in San Diego, SSAT Tutors in Los Angeles, English Tutors in Dallas Fort Worth, Calculus Tutors in Dallas Fort Worth, SAT Tutors in New York City, SSAT Tutors in Dallas Fort Worth, SAT Tutors in Denver, Chemistry Tutors in Atlanta, Biology Tutors in Phoenix, GRE Tutors in New York City
Popular Courses & Classes
SAT Courses & Classes in Atlanta, Spanish Courses & Classes in Chicago, ISEE Courses & Classes in New York City, SAT Courses & Classes in Dallas Fort Worth, GRE Courses & Classes in Denver, GMAT Courses & Classes in Los Angeles, Spanish Courses & Classes in San Diego, ISEE Courses & Classes in Los Angeles, GMAT Courses & Classes in Dallas Fort Worth, LSAT Courses & Classes in Denver
Popular Test Prep
MCAT Test Prep in Los Angeles, LSAT Test Prep in Houston, GMAT Test Prep in Los Angeles, MCAT Test Prep in Denver, SSAT Test Prep in Denver, MCAT Test Prep in Chicago, SAT Test Prep in Philadelphia, ISEE Test Prep in Los Angeles, GMAT Test Prep in Dallas Fort Worth, MCAT Test Prep in Seattle
![Learning Tools by Varsity Tutors](https://vt-vtwa-app-assets.varsitytutors.com/assets/problems/og_image_practice_problems-9cd7cd1b01009043c4576617bc620d0d5f9d58294f59b6d6556fd8365f7440cf.jpg)