Cell Membrane Functions Quiz
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Questions and Answers

What is the main function of Leptin?

  • Inhibits bone maturation
  • Causes hunger
  • Causes you to feel full (correct)
  • Regulates blood sugar levels

Which hormone is responsible for upregulation of aquaporin channels within the collecting ducts?

  • ADH (correct)
  • Somatostatin
  • Ghrelin
  • Estradiol

What characteristic differentiates Steroid Hormones from Peptide Hormones?

  • Bind to extracellular receptors
  • Derived from cholesterol (correct)
  • Source from amino acids
  • Utilize second messengers

Which type of linkage is present in Cellulose?

<p>Beta-1,4 linkage (B)</p> Signup and view all the answers

What happens when TSH is suppressed?

<p>Increase in ACTH levels (B)</p> Signup and view all the answers

What is responsible for the specificity of receptors?

<p>G-protein linked receptors (A)</p> Signup and view all the answers

Which hormone types are involved in blood calcium regulation?

<p>Parathyroid Hormone (PTH) and Calcitonin (D)</p> Signup and view all the answers

What is the function of Vitamin D in the body?

<p>Increasing blood calcium levels (B)</p> Signup and view all the answers

Which stop codon is responsible for terminating translation?

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

Which enzyme is responsible for proofreading DNA sequences during replication?

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

What is the process called when a carbohydrate group is covalently attached to a protein?

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

Which structure is responsible for producing oocytes and secreting hormones?

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

What occurs in the process of DNA methylation?

<p>Repression of transcription through addition of methyl group to DNA (C)</p> Signup and view all the answers

Which tube is the location of fertilization?

<p>Uterine (fallopian) tube (D)</p> Signup and view all the answers

What is the process called when a phosphate group is covalently attached to a protein?

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

What type of receptors respond to mechanical forces, vibrations, and pressure changes?

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

Which type of scan reveals images of anatomy?

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

Which of the following is a Ca2+ dependent transmembrane glycoprotein that mediates cell-cell adhesion?

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

What is the function of Gap junctions?

<p>Allow for rapid exchange of ions and small molecules (A)</p> Signup and view all the answers

Which sensory receptors respond to light and are found in the retina of the eye?

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

What is the primary function of primase in DNA replication?

<p>Making an RNA primer to match a fragment of DNA (B)</p> Signup and view all the answers

Which reflex involves spreading and lifting of a baby's toes when the sole is stimulated?

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

What type of junction prevents the leakage of small molecules and ions between adjacent epithelial cells?

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

If a baby exhibits the Moro reflex, what physical response would you expect to see?

<p>Extension and drawing in of the arms and legs, throwing back of the head (B)</p> Signup and view all the answers

What is the main role of ligases in DNA replication?

<p>Binding two DNA fragments with phosphodiester bonds (B)</p> Signup and view all the answers

What is the role of Sulfolipids?

<p>Playing a role in photosynthesis (A)</p> Signup and view all the answers

Which process describes vertical diffusion in the cell membrane?

<p>Movement of molecules from one leaflet to another (C)</p> Signup and view all the answers

What is the energy requirement for scramblases to move phospholipids in the cell membrane?

<p>ATP-independent (C)</p> Signup and view all the answers

Where are gustatory chemoreceptors located?

<p>Taste buds on the tongue (A)</p> Signup and view all the answers

Which receptors detect stimuli from internal organs and blood vessels?

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

Which type of mutation involves flipping a chromosomal segment?

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

What is the function of Goblet cells in the respiratory tract?

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

Which type of epithelial cells produce surfactant in the lungs?

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

What is the main function of axons in neurons?

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

Which mutation results from the insertion or deletion of bases that shifts the reading frame?

<p>Frameshift Mutation (D)</p> Signup and view all the answers

What is the role of Myelin Sheath around axons?

<p>Insulates nerve signals (D)</p> Signup and view all the answers

Which type of mutation tends to accumulate in species during evolution by natural selection?

<p>Beneficial Mutation (D)</p> Signup and view all the answers

'Dendrites' in neurons function to:

<p>Receive action potentials (A)</p> Signup and view all the answers

'Translocation' in genetics refers to the movement of a chromosomal segment to:

<p>'Another chromosome' (B)</p> Signup and view all the answers

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