{"id":215957,"date":"2025-05-18T08:31:14","date_gmt":"2025-05-18T08:31:14","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=215957"},"modified":"2025-05-18T08:31:15","modified_gmt":"2025-05-18T08:31:15","slug":"select-the-most-correct-statement-regarding-nucleic-acids-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/18\/select-the-most-correct-statement-regarding-nucleic-acids-2\/","title":{"rendered":"Select the most correct statement regarding nucleic acids."},"content":{"rendered":"\n

Select the most correct statement regarding nucleic acids.<\/p>\n\n\n\n

A) Three forms exist: DNA, RNA, and tDNA.
B) DNA is a long, double-stranded molecule made up of A, T, G, and C bases.
C) RNA is a long, single-stranded molecule made up of the bases A, T, G, and C.
D) tDNA is considered a “molecular slave” of DNA during protein synthesis.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The correct answer is:
B) DNA is a long, double-stranded molecule made up of A, T, G, and C bases.<\/strong><\/p>\n\n\n\n

\n\n\n\n

Explanation (300+ words):<\/h3>\n\n\n\n

Nucleic acids are vital biomolecules that store and transmit genetic information in all living organisms. There are two primary types of nucleic acids: deoxyribonucleic acid (DNA)<\/strong> and ribonucleic acid (RNA)<\/strong>. Each of these plays a specific role in the storage and expression of genetic information.<\/p>\n\n\n\n

DNA (Deoxyribonucleic Acid)<\/strong> is a long, double-stranded molecule composed of two complementary chains that form a double helix. Each strand consists of a sequence of nucleotides, which include a phosphate group, a deoxyribose sugar, and one of four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G)<\/strong>. In DNA, adenine pairs with thymine (A-T), and cytosine pairs with guanine (C-G) through hydrogen bonds. The double-helix structure provides stability and the means for accurate replication during cell division. Therefore, option B<\/strong> correctly describes DNA as a double-stranded molecule made of A, T, G, and C bases.<\/p>\n\n\n\n

Now, examining the other options:<\/p>\n\n\n\n

    \n
  • Option A<\/strong> is incorrect because there is no such recognized form of nucleic acid called tDNA<\/strong>. The two known types of nucleic acids are DNA and RNA. Some subtypes of RNA (e.g., tRNA, mRNA, rRNA) exist, but tDNA<\/strong> is not a standard classification.<\/li>\n\n\n\n
  • Option C<\/strong> is incorrect because RNA does not<\/strong> contain thymine (T). Instead, uracil (U)<\/strong> replaces thymine in RNA. Thus, the bases in RNA are adenine (A), uracil (U), cytosine (C), and guanine (G)<\/strong>. RNA is typically single-stranded.<\/li>\n\n\n\n
  • Option D<\/strong> is incorrect and misleading. While the term “molecular slave” might loosely refer to molecules like transfer RNA (tRNA)<\/strong> that help translate genetic code during protein synthesis, there is no nucleic acid known as tDNA<\/strong>, making the option scientifically invalid.<\/li>\n<\/ul>\n\n\n\n

    In conclusion, option B<\/strong> is the most accurate and scientifically correct description regarding nucleic acids.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Select the most correct statement regarding nucleic acids. A) Three forms exist: DNA, RNA, and tDNA.B) DNA is a long, double-stranded molecule made up of A, T, G, and C bases.C) RNA is a long, single-stranded molecule made up of the bases A, T, G, and C.D) tDNA is considered a “molecular slave” of DNA […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-215957","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/215957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=215957"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/215957\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=215957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=215957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=215957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}