Basic Structure of Eukaryotic Cells Quiz: Nucleus

1. All organisms are made of cells. 2. A cell is the basic structural and functional unit of life. 3. Cells arise from pre-existing cells.

Approximately 30 trillion cells.

Unicellular organisms are made up of a single cell, while multicellular organisms are made up of multiple cells.

<p>The cell contains hereditary information (DNA) which is passed on from cell to cell during cell division.</p> Signup and view all the answers

<p>Cells vary in size and structure as they are specialized to perform different functions.</p> Signup and view all the answers

<p>All cells are basically the same in chemical composition.</p> Signup and view all the answers

<p>Sorts and packages the proteins</p> Signup and view all the answers

<p>Produces the energy molecule ATP</p> Signup and view all the answers

<p>Nuclear envelope</p> Signup and view all the answers

<p>Contains the genetic material DNA and is the control center of the cell</p> Signup and view all the answers

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

<p>Largest structure that is involved in ribosome production</p> Signup and view all the answers

<p>High surface area to volume ratio</p> Signup and view all the answers

<p>Roughly 5 micrometres</p> Signup and view all the answers

<p>Ovum or egg cell</p> Signup and view all the answers

<p>To enable them to squeeze through tiny capillaries</p> Signup and view all the answers

<p>Long extensions (axons and dendrites); help pass signals quickly</p> Signup and view all the answers

<p>Internal structures that perform specific functions</p> Signup and view all the answers

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

<p>Cholesterol spaces out the phospholipid molecules and affects membrane fluidity.</p> Signup and view all the answers

<p>Carbohydrates maintain the stability of the cell membrane and facilitate cellular recognition.</p> Signup and view all the answers

<p>Regulates exchange of substances between inside and outside of cell, involved in communication.</p> Signup and view all the answers

<p>Polar hydrophilic head and non-polar hydrophobic tails.</p> Signup and view all the answers

<p>Carbohydrates are crucial for cellular recognition as they allow cells to connect to form tissues and are part of the immune response.</p> Signup and view all the answers

<p>Integral proteins serve as channels, carriers, and receptors in the cell membrane.</p> Signup and view all the answers

<p>Peripheral proteins can act as cell adhesion molecules anchoring neighboring cells and contribute to the cytoskeleton.</p> Signup and view all the answers

<p>The cytoplasm is the area between the cell membrane and the nucleus, containing cytosol, organelles, and the cytoskeleton.</p> Signup and view all the answers

<p>Cytosol contains soluble proteins, salt, water, fatty acids, amino acids, carbohydrates, and enzymes.</p> Signup and view all the answers

<p>Chemical reactions in prokaryotes occur in the cytosol.</p> Signup and view all the answers

<p>Receptors bind to specific molecules and generate chemical signals that initiate intracellular reactions.</p> Signup and view all the answers