Stayin Alive
Balance of the human bodily functions to ensure survival of human genes
Any internal or external change in the environment that produces a response
What is a stimulus?
Anything that takes up space and has mass
What is matter?
Used to measure a compound's acidity or alkalinity
What is a pH scale?
needed in large amounts in the body; includes carbs, proteins, and fats.
What are macronutrients?
Oxygen, nutrients, ideal temperature, and proper atmospheric pressure
What are requirements the for human life?
Sensory organs that are sensitive to specific types of stimuli
What are receptors?
Color, solid, liquid, gas, smell, and weight are examples of this
What are the physical properties of matter?
Important for the survival of living organisms, these are chemical compounds found in organisms.
Carbs, fats, proteins, and nucleic acids are examples of this
What are biomolecules?
needed in small amounts in the body; vitamins and minerals are examples of these
What are micronutrients?
Movement, growth, responsiveness, reproduction, digestion, absorption, assimilation, and excretion
What are the characteristics of human life?
Least common homeostatic control mechanism; Response to stimuli that is sustained until it is no longer needed
What is positive feedback?
Smallest particle (unit) of an element that has all the properties of the element; composed of electrons (-), neutrons, and protons (+) and make up molecules
What are atoms?
Universal solvent
What is water?
Forms to make atoms more stable. Atoms can share, donate, or borrow electrons.
Molecular/Chemical Bonds
a system used to control the level of a variable in which there is an identifiable receptor (sensor), control center (integrator or comparator), effectors, and methods of communication
What is a feedback loop?
Most common homeostatic control mechanism in which the effector response counteracts the original stimulus; method by which hormone levels are regulated
What is positive feedback?
Particle formed by the bonding of two or more atoms
What are molecules?
Dissolves solutes to create a solution
What is a solvent?
a form of chemical connection in which one atom loses valence electrons (furthest from the nucleus) and gains them from another.
(One atom "donates" an electron and becomes "positive" in overall charge. The other atom "receives" or "borrows" an electron and becomes "negative" in overall charge)
What is an ionic bond?
When your body temperature rises, you may sweat to release heat; if too much heat escapes, you may end up feeling too cold, which will cause your muscles to shiver in an effort to make you warmer
What is an example of a feedback loop?
The responding cell, tissue, or organ to a stimulus
(ex. when you drink a lot of water, kidneys are engaged to flush water out of the body increasing urine production. Response to the stimulus is using the restroom.)
What is an effector?
Substance consisting of atoms or ions of different elements bound together
What is a compound?
a substance that is dissolved in a solvent to create a solution.
salt is an example of this.
What is a solute?
A chemical bond formed when electrons are shared between two atoms
What is a covalent bond?