Antiparallel Study guides, Class notes & Summaries

Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - Answer isointense in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called A) precession B) resonance C) frequency D) angular momentum - Answer precession magnetic resonance imaging is derived from the process known as: A) ma...

7Q1-Describe the double helix nature of DNA. Why is it that DNA is always found as a double stranded, antiparallel and complementary molecule? Correct Answer-The two strands of DNA run in anti-parallel directions and attached to each sugar is one of four types of nitrogenous bases, which make hydrogen bonds. It is antiparallel and complementary so that it has two copies as a safety measure. 7Q2-What are histones and the structural components(DNA/proteins)of a nucleosome? Correct Answer-Histon...

messenger RNA (mRNA) is synthesized in what direction and is complementary and antiparallel to which DNA strand (coding or template)? correct answers synthesized in the 5'-->3' direction and is complementary and antiparallel to the DNA template strand. It is identical to the DNA coding strand. How are the basal layer of the epidermis and the innermost lining of the small intestine similar? A. both are nondividing tissues B. both are derived from ectoderm C. both are composed of squamo...

MCAT Biology Central Dogma - correct answer DNA → RNA → Protein Purines - which bases? - how many rings? - correct answer Pyrimidines - which bases? - how many rings? - correct answer Remember: "Pyrimidine" has a "y" in it; so does "cytosine" and "thymine." Phosphodiester Bond - correct answer Joins one nucleotide to the next; between the 3rd C of one ribose and the 5th C of the other to create the sugar-phosphate backbone Directionality of DNA (convention) - correc...

List the major steps of the "central dogma" of molecular biology. What are the products of each step? Correct Answer-Replication --> DNA Transcription --> RNA Translation --> protein Once the DNA strands unwind and separate, DNA polymerases copy the DNA. What are they copying? What characteristics of DNA necessitates the need for leading and lagging strands to copy the DNA? Correct Answer-They are copying ____. DNA is antiparallel so the mode of synthesis occurs in 2 different ...

MRI ASRT Test Questions and Correct Answers on All 12 Modules The most common type of magnet used in today's MR systems is the _______________. A. resistive magnet B. permanent magnet C. superconducting magnet D. open MR scanner - Correct Answer C. superconducting magnet The positively charged part of an atom is the _____________. A. electron B. neutron C. proton D. nucleus - Correct Answer C. proton When a hydrogen nucleus is positively charged and spins, it generates a sma...

MCAT BiologyCentral Dogma - correct answer DNA → RNA → Protein Purines - which bases? - how many rings? - correct answer Pyrimidines - which bases? - how many rings? - correct answer Remember: "Pyrimidine" has a "y" in it; so does "cytosine" and "thymine." Phosphodiester Bond - correct answer Joins one nucleotide to the next; between the 3rd C of one ribose and the 5th C of the other to create the sugar-phosphate backbone Directionality of DNA (convention) - correct ...

Bio Exam 3 Questions and Answers 100% Pass What did Griffith discover in his experiment involving bacteria with capsule (S) and non-capsule (R) strains, and what molecule did Avery, MacLeod, and McCarty identify as responsible for this phenomenon? Griffith observed that DNA could transform bacteria, demonstrating for the first time that genetic material can be transferred through a process called transformation. The S-strain, with a polysaccharide capsule, is protected from the immune...

BIO 181 - Ch. 5,6,7Difference between Monomers and Polymers - correct answer Polymer is a chain of smaller molecules - Monomers Deoxyribonucleic Acid (DNA) - correct answer stores genetic information, replicated using proteins. Stays in the nucleus. Very Stable - Lacks one Oxygen atom in 2'C position Structure of DNA - Primary Structure - correct answer Sequence: -stabilized by phosphodiester bonds Structure of DNA - Secondary Structure - correct answer Double Helix: -has 2 strands...

Purines and examples of them Purines contain two carbon-nitrogen rings and four nitrogen atoms. Adenine and guanine Pyrimidines and examples of them pyrimidines contain one carbon-nitrogen ring and two nitrogen atoms. Thymine and cytosine Structure of DNA DNA is a double helix (two helical strands.) The two strands are held together by the 'rungs', which are made of complementary pairs. The pairs are held together by weak hydrogen bonds. Arrangement of DNA antiparallel arrangement, ...

WGU C785 OA Biochem Final Exam (New assessment style Q&A) 1. What is the complementary sequence to 3’ ATG CGA ATA 5’? * 1/1 3’ TAT TCG CAT 5’ 3’ TAC GCT TAT 5’ 3’ GAT AGC ATA 5’ 5’ ATA AGC GTA 3’ 2. Which amino acid sequence would result from this Coding DNA strand? 3’ ATG CAG ATA 5’? * 1/1 Tyr Val Tyr Ile Gln Ile Ile Asp Val Feedback The correct answer is 3' TAT TCG CAT 5'. Remember complementary means “Matching or Pairing” You have to remember to pay...