Structure of Chromosomes Quiz

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Questions and Answers

What is the purpose of Selina Solutions Concise Biology for Class 10?

  • To entertain students with biology concepts
  • To provide a wide range of questions for exam preparation (correct)
  • To teach students mathematics
  • To offer solutions for chemistry problems

Why do students practice Selina Solutions?

  • To learn computer programming
  • To attain good marks in Biology (correct)
  • To improve their singing skills
  • To become better at history

What kind of material is Selina Solutions?

  • A collection of poetry
  • A cookbook for recipes
  • Essential study material for biology (correct)
  • A guide for learning music

Who has prepared the Selina Solutions Concise Biology Class 10 Chapter 2?

<p>Expert tutors at BYJU’S (D)</p> Signup and view all the answers

What do students gain by referring to Selina Solutions?

<p>More knowledge (B)</p> Signup and view all the answers

What is the structure of eukaryotic chromosomes?

<p>Linear and stored in the cell nucleus (B)</p> Signup and view all the answers

What is the role of histones in eukaryotic chromosome packaging?

<p>Wrapping of DNA to form condensed nucleosomes (C)</p> Signup and view all the answers

Who discovered the double helix structure of DNA?

<p>James Watson and Francis Crick (A)</p> Signup and view all the answers

What was determined by chemist Alexander Todd about the backbone of a DNA molecule?

<p>Contained repeating phosphate and deoxyribose sugar groups (A)</p> Signup and view all the answers

What did biochemist Erwin Chargaff find about nucleotide pairing in DNA?

<p>Adenine and thymine always paired while cytosine and guanine always paired (C)</p> Signup and view all the answers

Flashcards

Purpose of Selina Solutions Concise Biology for Class 10?

To provide a wide range of questions that help students prepare for their exams.

Why practice Selina Solutions?

To help them attain good marks in Biology.

What type of material is Selina Solutions?

Essential study material for biology.

Who prepares Selina Solutions Concise Biology Class 10 Chapter 2?

Expert tutors at BYJU’S.

Signup and view all the flashcards

Benefit of Selina Solutions?

Students gain more knowledge of the subject.

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Eukaryotic chromosome structure?

Linear and stored in the cell nucleus

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Role of histones?

Wrapping DNA to form condensed nucleosomes.

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DNA double helix discovery?

James Watson and Francis Crick.

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Alexander Todd's DNA backbone finding?

Contained repeating phosphate and deoxyribose sugar groups.

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Erwin Chargaff's nucleotide pairing?

Adenine and thymine paired; cytosine and guanine paired.

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Study Notes

Purpose and Features of Selina Solutions

  • Selina Solutions Concise Biology for Class 10 is a study material designed to help students understand and practice biology concepts.
  • Students practice Selina Solutions to clarify their doubts, improve their skills, and perform well in exams.

Selina Solutions Material

  • Selina Solutions provides concise and comprehensive study material for Class 10 biology students.

Authorship

  • Selina Solutions Concise Biology Class 10 Chapter 2 has been prepared by experienced teachers and subject experts.

Benefits of Referring to Selina Solutions

  • By referring to Selina Solutions, students gain a deeper understanding of biology concepts, improve their problem-solving skills, and develop confidence in tackling complex questions.

Eukaryotic Chromosomes

  • Eukaryotic chromosomes have a linear structure with a centromere, telomeres, and origins of replication.
  • Histones play a crucial role in eukaryotic chromosome packaging by providing a scaffold for DNA to coil around.

Discovery of DNA Structure

  • James Watson and Francis Crick discovered the double helix structure of DNA.

DNA Backbone

  • Chemist Alexander Todd determined that the backbone of a DNA molecule is composed of sugar and phosphate molecules.

Nucleotide Pairing

  • Biochemist Erwin Chargaff found that in DNA, adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C).

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