Cell Physiology Chapter 1 Quiz

Consists of two layers of phospholipids with embedded proteins and sugars

Control passage of substances into and out of the cell, regulating the intracellular environment

Phospholipids, proteins, sugars, and cholesterol

<p>Arranged like a sandwich with the hydrophilic heads on the outer surfaces and the hydrophobic tails forming a central water-repelling layer</p> Signup and view all the answers

<p>Provide channels for the passage of substances and electrolytes</p> Signup and view all the answers

<p>Present in the membrane</p> Signup and view all the answers

<p>They give the cell its immunological identity - 'self' markers.</p> Signup and view all the answers

<p>Act as receptors for hormones and other chemical messengers, and some are enzymes.</p> Signup and view all the answers

<p>Selective permeability.</p> Signup and view all the answers

<p>By dissolving in the lipid part of the membrane.</p> Signup and view all the answers

<p>Facilitated diffusion.</p> Signup and view all the answers

<p>Passive movement of water down its concentration gradient towards equilibrium across a semipermeable membrane.</p> Signup and view all the answers

<p>The transport of substances up their concentration gradient using chemical energy in the form of ATP.</p> Signup and view all the answers

<p>It maintains the unequal concentrations of sodium and potassium ions on either side of the plasma membrane.</p> Signup and view all the answers

<p>By pinocytosis ('cell-drinking') or phagocytosis ('cell-eating').</p> Signup and view all the answers

<p>Exocytosis.</p> Signup and view all the answers

<p>Individual and highly specialised structures enclosed by their own membrane within the cytosol.</p> Signup and view all the answers

<p>Skeletal muscle fibres and some other cells.</p> Signup and view all the answers

<p>Chromatin</p> Signup and view all the answers

<p>Directs all metabolic activities and contains genetic material in the form of DNA.</p> Signup and view all the answers

<p>Involved in synthesis and assembly of the components of ribosomes.</p> Signup and view all the answers

<p>Central to aerobic respiration and the production of ATP.</p> Signup and view all the answers

<p>RNA and protein</p> Signup and view all the answers

<p>Synthesises lipids and steroid hormones, and is associated with the detoxification of some drugs.</p> Signup and view all the answers

<p>Rough endoplasmic reticulum and ribosomes</p> Signup and view all the answers

<p>Golgi apparatus</p> Signup and view all the answers

<p>Contain enzymes involved in breaking down fragments of organelles and large molecules inside the cell into smaller particles.</p> Signup and view all the answers

<p>It contains the nucleus and has tiny pores through which some substances can pass between it and the cytoplasm.</p> Signup and view all the answers

<p>ATP</p> Signup and view all the answers

<p>To 'package' proteins into membrane-bound vesicles and move them to the plasma membrane for exocytosis.</p> Signup and view all the answers