Chromatin Composition Quiz

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Questions and Answers

What is a critical aspect during organ implantation according to the text?

  • Recognition of cell types (correct)
  • Blood circulation
  • Formation of muscle tissue
  • Development of nerves

Which structure shares in the formation of basal lamina and basement membrane?

  • Nerve cells
  • Epithelial cells (correct)
  • Muscle cells
  • Bone cells

Why is it important for cells to share in the formation of basal lamina and basement membrane?

  • To provide structural integrity (correct)
  • To conduct nerve impulses
  • To regulate hormone production
  • To support the immune system

Which of the following statements is true about cell recognition during organ implantation?

<p>It enhances the chances of a successful implantation. (B)</p> Signup and view all the answers

What role do cells play in forming the basement membrane?

<p>Providing structural support (D)</p> Signup and view all the answers

What is the primary component of chromatin?

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

Which proteins are bound to DNA in chromatin?

<p>Histones (C)</p> Signup and view all the answers

What is the structure of DNA in chromatin?

<p>Linear double helix (C)</p> Signup and view all the answers

What role do histones play in chromatin structure?

<p>Coiling DNA (A)</p> Signup and view all the answers

Which of the following is NOT a component of chromatin?

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

What is the fundamental principle that states all living things are formed from one or more cells?

<p>Cell is the structural and functional unit of living organisms (A)</p> Signup and view all the answers

How many different cell types are found in the human organism, according to the provided text?

<p>200 different cell types (D)</p> Signup and view all the answers

What process gives rise to cellular differentiation in organisms?

<p>Zygote formation (C)</p> Signup and view all the answers

Which type of cell division is responsible for generating new cells in multicellular organisms?

<p>Mitosis (C)</p> Signup and view all the answers

Which end of the tubulin subunits causes the elongation of microtubules?

<p>Plus end (D)</p> Signup and view all the answers

What concept emphasizes that all cells come from preexisting cells?

<p>Cell theory (D)</p> Signup and view all the answers

What is the term for the fast-growing end at which tubulin subunits polymerize?

<p>Dynamic end (C)</p> Signup and view all the answers

In which direction do tubulin subunits polymerize to elongate microtubules?

<p>From the plus end (C)</p> Signup and view all the answers

What is the consequence of polymerization at the minus end of microtubules?

<p>Microtubule destabilization (A)</p> Signup and view all the answers

Which process occurs at the plus end of microtubules?

<p>Capping protein attachment (C)</p> Signup and view all the answers

What is the primary function of melanin pigments in the body?

<p>Protecting against harmful UV radiation (B)</p> Signup and view all the answers

In which cells are melanin pigments synthesized?

<p>Melanocytes (A)</p> Signup and view all the answers

Where are melanin pigments stored in the body?

<p>Melanophores (C)</p> Signup and view all the answers

Which of the following is NOT a location where melanin pigments are commonly found?

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

What is the color range of melanin pigments?

<p>Dark brown to black (C)</p> Signup and view all the answers

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