Biology Levels of Organization Quiz

Chemicals, cells, tissues, organs, systems, and organism (CCTOSO).

It refers to the balance that is maintained by our physiological processes within a range given towards a set point.

The use of energy (ATP).

<p>Everything in our body works because all of our structures (including the most basic ones such as receptors in a cell) have a specific structure that determines how it will work or what it will activate/inhibit it.</p> Signup and view all the answers

<p>In order to maintain balance and in order to function we depend on how and what molecules will signal our structures to do something.</p> Signup and view all the answers

<p>It affects all other systems due to its structural proximity or due to the exchange that occurs between that system and all the other ones.</p> Signup and view all the answers

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

<p>The input signal (aka cytokine or ligand), the controller (aka integrating center), and the output signal.</p> Signup and view all the answers

<p>A reaction that causes a decrease in function as a response to a stimulus. It stabilizes the system by stopping or lessening the output created by the original stimulus so that we are kept in homeostasis or equilibrium.</p> Signup and view all the answers

<p>Any signal molecule that binds to a receptor.</p> Signup and view all the answers

<p>6.02 x10²³ particles.</p> Signup and view all the answers

<p>The concentration in moles of a substance in 1L of solution.</p> Signup and view all the answers

<p>The pressure that exists within/inside a vessel and is created by all the particles and fluid within it.</p> Signup and view all the answers

<p>Also a pressure that exists within a vessel but is created only by all the non-permeable solutes found inside it and it causes water to move back into the vessel.</p> Signup and view all the answers

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

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

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

<p>Phosphate hydrophilic (aka lipophobic) heads, and lipid hydrophobic (aka lipophilic) tails.</p> Signup and view all the answers

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

<p>Receptors only allow binding of some ligands based on their molecular shape. If the molecular shape of the ligand doesn't match the molecular shape of the binding site in the receptor then it won't bind.</p> Signup and view all the answers

<p>An increase in the reaction, meaning they will increase the speed at which ligand-receptor binding is happening or the amount of ligand-receptor binding.</p> Signup and view all the answers

<p>Epithelial, Connective, Neural, and Muscular.</p> Signup and view all the answers

<p>The neuron and the neuroglia.</p> Signup and view all the answers

<p>Dendrites and the Soma.</p> Signup and view all the answers

<p>The connection between the soma and the axon</p> Signup and view all the answers

Hierarchy of structures in the body: Chemicals, Cells, Tissues, Organs, Systems, Organism.

Balance maintained by physiological processes within a range around a set point.

Physiological processes require energy (ATP) obtained from glucose or aerobic respiration.

The specific structure of a body part determines its function.

Signals (chemical/electrical) direct body functions and maintain balance.

Components include input signals, the integrating center, and output signals to regulate responses.

A process that decreases function to stabilize a system in response to a stimulus.

A process that increases function by reinforcing changes until an external factor interrupts.

Signal molecules that bind to receptors to trigger cellular responses.

Proteins that receive signals (ligands) and initiate cellular responses, can be intracellular or membrane-bound.

Total concentration of solute particles in a solution, affecting water movement.

Effect of a solution on cell shape; related to the movement of water across cell membranes.

Pressure exerted within a vessel by particles and fluid, pushing substances outward.

Pressure that draws water into a vessel, caused by non-permeable solutes.

Organic molecules in the body include proteins, carbohydrates, lipids, and nucleic acids.

Ability of substances to cross the plasma membrane; varies by size and solubility.

Receptors have shapes that only fit specific ligands; ensures selective binding.

Strength of binding between a ligand and its receptor; determines the likelihood of binding.

Ligands with similar shapes that can bind to the same receptor, affecting response.

Physiological process that increases the number of receptors available for binding.

Process that decreases the number of receptors, reducing the cell’s sensitivity to signals.

Functional cells of neural tissue that transmit information throughout the body.

Branches of a neuron that receive signals from other neurons or receptors.

Part of a neuron that carries action potentials away from the soma to the next cell.

End of the neutron where neurotransmitters are stored and released.

Tissue that covers body surfaces and lines cavities and organs.

Supports and binds other tissues, includes fat, blood, and bone.

Tissue responsible for movement; includes skeletal, cardiac, and smooth muscles.

Tissue composed of neurons and glial cells, facilitating communication.