{"id":186740,"date":"2025-01-26T06:49:34","date_gmt":"2025-01-26T06:49:34","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=186740"},"modified":"2025-01-26T06:49:36","modified_gmt":"2025-01-26T06:49:36","slug":"bacterial-cell-wall-membrane-includes-all-except","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/26\/bacterial-cell-wall-membrane-includes-all-except\/","title":{"rendered":"Bacterial cell wall membrane includes all EXCEPT"},"content":{"rendered":"\n<p>Bacterial cell wall membrane includes all EXCEPT ( Mark both answers )<\/p>\n\n\n\n<p>Group of answer choices O- polysaccharides porins lipoproteins asymmetric phospholipids membrane lipid A teichoic acids \u00c3\u201a\u00c2 \u00c3\u201a\u00c2 18.\u00c3\u201a\u00c2<br>F plasmid is best desribed as a \u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u2026 plasmid\u00c3\u201a\u00c2<\/p>\n\n\n\n<p>Group of answer choices non self transmissible self transmissible virulence plasmid becos it codes for toxin promiscuous high copy number \u00c3\u201a\u00c2 19.\u00c3\u201a\u00c2<br>Identify the FALSE statement from the following,<\/p>\n\n\n\n<p>Group of answer choices self transmissible plasmids have origin of transfer as well as mobilisation genes inclusions are non functional, storage granules accumulated inside bacterial cells plasmid DNA are in nucleoid area in Bacillus anthracis R plasmid codes for the sex pili host range refers to ability of plasmid to multiply in cell types \u00c3\u201a\u00c2 \u00c3\u201a\u00c2 21.\u00c3\u201a\u00c2<br>Which one of the following statement regarding plasmid is FALSE,<\/p>\n\n\n\n<p>Group of answer choices they are small, extrachromosomal DNA molecules they are necessary for metabolism and survival under normal conditions they may encode genes that provide antibiotic resistance few\u00c3\u201a\u00c2 plasmid encode genes for toxin production plasmids can jump species barrier\u00c3\u201a\u00c2 \u00c3\u201a\u00c2 24.\u00c3\u201a\u00c2<br>Identify the CORRECT statement regarding bacterial ribosomes,<\/p>\n\n\n\n<p>Group of answer choices are of the 70 S type made of RNA and proteins have small and large subunits plays role in translation can be the target site for antibiotics all of the above are correct statements\u00c3\u201a\u00c2 \u00c3\u201a\u00c2 \u00c3\u201a\u00c2 26.\u00c3\u201a\u00c2<br>Which of the following is NOT\u00c3\u201a\u00c2 a type of flagella arrangement?\u00c3\u201a\u00c2<\/p>\n\n\n\n<p>Group of answer choices monotrichous diplotrichous peritrichous amphitrichous . lophotrichous\u00c3\u201a\u00c2 \u00c3\u201a\u00c2 \u00c3\u201a\u00c2 \u00c3\u201a\u00c2<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Question 1: <strong>Bacterial cell wall membrane includes all EXCEPT:<\/strong><\/h3>\n\n\n\n<p>Answer choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O-polysaccharides<\/li>\n\n\n\n<li>Porins<\/li>\n\n\n\n<li>Lipoproteins<\/li>\n\n\n\n<li>Asymmetric phospholipids<\/li>\n\n\n\n<li>Membrane lipid A<\/li>\n\n\n\n<li>Teichoic acids<\/li>\n<\/ul>\n\n\n\n<p><strong>Answer:<\/strong> The correct answers are <strong>Teichoic acids<\/strong> and <strong>O-polysaccharides<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>bacterial cell wall membrane<\/strong> typically includes <strong>porins<\/strong>, <strong>lipoproteins<\/strong>, <strong>asymmetric phospholipids<\/strong>, and <strong>lipid A<\/strong>, which are integral components of the membrane and contribute to the structural integrity and functions like transport and protection.<\/li>\n\n\n\n<li><strong>Teichoic acids<\/strong> are found in the cell walls of Gram-positive bacteria, but not in the membrane.<\/li>\n\n\n\n<li><strong>O-polysaccharides<\/strong> are part of the outer membrane in Gram-negative bacteria, but they are not a direct part of the membrane structure itself\u2014they are more specifically a component of lipopolysaccharides (LPS).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Question 2: <strong>F plasmid is best described as a \u2026 plasmid:<\/strong><\/h3>\n\n\n\n<p>Answer choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Non-self transmissible<\/li>\n\n\n\n<li>Self-transmissible<\/li>\n\n\n\n<li>Virulence plasmid because it codes for toxin<\/li>\n\n\n\n<li>Promiscuous<\/li>\n\n\n\n<li>High copy number<\/li>\n<\/ul>\n\n\n\n<p><strong>Answer:<\/strong> The correct answer is <strong>Self-transmissible<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>F plasmid<\/strong> (Fertility plasmid) is <strong>self-transmissible<\/strong>, meaning it can transfer copies of itself to other bacteria through conjugation, often allowing the transfer of genes such as those for antibiotic resistance.<\/li>\n\n\n\n<li>It is not necessarily <strong>virulence<\/strong> related (it does not typically code for toxins).<\/li>\n\n\n\n<li><strong>Promiscuous<\/strong> plasmids can transfer between various species, but F plasmid is specifically involved in mating (conjugation).<\/li>\n\n\n\n<li>It is not usually described as having a <strong>high copy number<\/strong> compared to some other plasmids.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Question 3: <strong>Identify the FALSE statement from the following:<\/strong><\/h3>\n\n\n\n<p>Answer choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Self-transmissible plasmids have origin of transfer as well as mobilisation genes<\/li>\n\n\n\n<li>Inclusions are non-functional, storage granules accumulated inside bacterial cells<\/li>\n\n\n\n<li>Plasmid DNA is in the nucleoid area in Bacillus anthracis<\/li>\n\n\n\n<li>R plasmid codes for the sex pili<\/li>\n\n\n\n<li>Host range refers to ability of plasmid to multiply in cell types<\/li>\n<\/ul>\n\n\n\n<p><strong>Answer:<\/strong> The FALSE statement is <strong>Plasmid DNA is in the nucleoid area in Bacillus anthracis<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plasmid DNA is typically located in the <strong>cytoplasm<\/strong> of bacterial cells, not in the nucleoid area. The <strong>nucleoid<\/strong> region contains the chromosomal DNA.<\/li>\n\n\n\n<li><strong>R plasmids<\/strong> (resistance plasmids) code for <strong>sex pili<\/strong> that help in conjugation, and <strong>host range<\/strong> refers to the ability of plasmids to be replicated in different host cells (not just cell types).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Question 4: <strong>Which one of the following statements regarding plasmids is FALSE:<\/strong><\/h3>\n\n\n\n<p>Answer choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>They are small, extrachromosomal DNA molecules<\/li>\n\n\n\n<li>They are necessary for metabolism and survival under normal conditions<\/li>\n\n\n\n<li>They may encode genes that provide antibiotic resistance<\/li>\n\n\n\n<li>Few plasmids encode genes for toxin production<\/li>\n\n\n\n<li>Plasmids can jump species barrier<\/li>\n<\/ul>\n\n\n\n<p><strong>Answer:<\/strong> The FALSE statement is <strong>They are necessary for metabolism and survival under normal conditions<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Plasmids<\/strong> are <strong>extrachromosomal DNA<\/strong> and are not essential for basic metabolism or survival under normal conditions. However, they often carry genes that can give bacteria advantages, such as antibiotic resistance or virulence factors (e.g., toxin production).<\/li>\n\n\n\n<li><strong>Some plasmids<\/strong> encode genes for <strong>antibiotic resistance<\/strong> or <strong>toxin production<\/strong>, and they can even transfer between different species, allowing them to &#8220;jump species barriers.&#8221;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Question 5: <strong>Identify the CORRECT statement regarding bacterial ribosomes:<\/strong><\/h3>\n\n\n\n<p>Answer choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Are of the 70 S type<\/li>\n\n\n\n<li>Made of RNA and proteins<\/li>\n\n\n\n<li>Have small and large subunits<\/li>\n\n\n\n<li>Play a role in translation<\/li>\n\n\n\n<li>Can be the target site for antibiotics<\/li>\n\n\n\n<li>All of the above are correct statements<\/li>\n<\/ul>\n\n\n\n<p><strong>Answer:<\/strong> The correct answer is <strong>All of the above are correct statements<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bacterial ribosomes are <strong>70S ribosomes<\/strong>, made up of <strong>rRNA and proteins<\/strong>.<\/li>\n\n\n\n<li>They consist of a <strong>small subunit<\/strong> (30S) and a <strong>large subunit<\/strong> (50S).<\/li>\n\n\n\n<li><strong>Ribosomes<\/strong> play a crucial role in <strong>translation<\/strong>, the process of protein synthesis.<\/li>\n\n\n\n<li>Many <strong>antibiotics<\/strong> (such as tetracyclines, macrolides, and aminoglycosides) target bacterial ribosomes, inhibiting protein synthesis, and therefore preventing bacterial growth.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Question 6: <strong>Which of the following is NOT a type of flagella arrangement?<\/strong><\/h3>\n\n\n\n<p>Answer choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Monotrichous<\/li>\n\n\n\n<li>Diplotrichous<\/li>\n\n\n\n<li>Peritrichous<\/li>\n\n\n\n<li>Amphitrichous<\/li>\n\n\n\n<li>Lophotrichous<\/li>\n<\/ul>\n\n\n\n<p><strong>Answer:<\/strong> The correct answer is <strong>Diplotrichous<\/strong>.<\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Monotrichous<\/strong>: A single flagellum at one end of the cell.<\/li>\n\n\n\n<li><strong>Peritrichous<\/strong>: Flagella distributed around the entire surface of the bacterium.<\/li>\n\n\n\n<li><strong>Amphitrichous<\/strong>: Flagella at both ends of the bacterium.<\/li>\n\n\n\n<li><strong>Lophotrichous<\/strong>: A tuft or cluster of flagella at one end of the bacterium.<\/li>\n\n\n\n<li><strong>Diplotrichous<\/strong> is not a valid type of flagellar arrangement. The correct term would be <strong>lophotrichous<\/strong> for flagella at one end or a similar cluster.<\/li>\n<\/ul>\n\n\n\n<p>I hope this helps clarify the concepts! Let me know if you need further explanation on any of the topics.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bacterial cell wall membrane includes all EXCEPT ( Mark both answers ) Group of answer choices O- polysaccharides porins lipoproteins asymmetric phospholipids membrane lipid A teichoic acids \u00c3\u201a\u00c2 \u00c3\u201a\u00c2 18.\u00c3\u201a\u00c2F plasmid is best desribed as a \u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u00c3\u00a2\u00e2\u201a\u00ac\u00c2\u00a6\u2026 plasmid\u00c3\u201a\u00c2 Group of answer choices non self transmissible self transmissible virulence plasmid becos it codes for toxin promiscuous [&hellip;]<\/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-186740","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/186740","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=186740"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/186740\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=186740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=186740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=186740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}