Midterm Biology exam Flashcards
Photosynthetic organisms that provide food for others
Producers
Eat plants or animals that profit from plants
Consumers
Bacteria and fungi that decompose wastes and remains of plants and animals
Decomposers
Domain that has prokaryotic, unicellular, microscopic organisms
Bacteria
Domain that has prokaryotic, unicellular, microscopic organisms that live in extreme environments
Archaea
Domain that has eukaryotic organisms whose cells have a nucleus and several organelles
Eukarya
Starting at the cellular level, what is the order from cell to biosphere.
Cell, Tissue, Organ, Organ System, Organism, Population, Community, Ecosystem, Biome, Biosphere.
Compare and Contrast prokaryotic and eukaryotic cells
Eukaryotic cells have nucleus-bound DNA, are larger and more complex.
The tendency of molecules to stick together
Cohesion
The clinging of one substance to another
Adhesion
A dissolving agent
Solvent
A measure of the difficulty to stretch or break the surface of a liquid
Surface tension
A liquid mixture of two or more substances
Solution
A substance that is dissolved
Solute
The foods that we eat and the nutrition that they contain
nutrition
Nutrients that that are needed in large amounts
Macronutrients
Nutrients that are needed in very small amounts
Micro nutrients
Carbs that must be broken down into simpler forms prior to absorption.
Polysaccharides
Sugars that still need to be broken down prior to absorption
Disaccharides
The absorbable form of sugar
Monosaccharides
When blood sugar is lower than 70
Hypoglycemia
When blood sugar is greater than 140
Hyperglycemia
When nutrient molecules enter the cells and undergo chemical changes
Assimilation
Bad cholesterol
LDL
Good cholesterol
HDL
Carbohydrates, fats and proteins are macronutrients
true
All minerals are micronutrients
false
Vitamins may serve as catalysts or coenzymes
true
In general, a person has to burn fewer calories than they consume in order to lose weight
false
The energy found in ATP is burned by breaking a bond between the 2nd and 3rd phosphate groups
true
Theoretically, with a weekly surplus of 500 calories, it should take a person 5 weeks to synthesize one pound of fat
false
A person with a BMI of >40 would be considered moderately obese
false
Muscle tissue makes up the greatest percentage of body weight
true
Contrast the terms catabolism and anabolism
Catabolic processes are considered to be consumption and breakdown of energy where anabolic processes are considered to be used for construction and repair
Choose the correct statement on the use of vitamins by athletes
Avitaminosis could be prevented with proper diet and nutrition
Which of the following sets of symptoms best describes a person who suffers from bulimia?
College-aged females that over consume and voluntarily vomit, leading to aspiration pneumonia and erosion of tooth enamel.
The study of the form of an organisms structures
Anatomy
The study of the function of an organisms structures
Physiology
the functional cellular unit of the nervous system
neuron
maintenance of internal conditions for survival regardless of the external environment
Homeostasis
An animals form should suggest its function
true
The size of an organism does not affect the way it moves
false
Muscle tissue is the most abundant tissue in animals
true
The surface area of internal exchange surfaces is far greater than the external surfaces
true
Lungs resemble a balloon more closely than a sponge
false
Organisms that eat only plants
Herbivore
Organisms that eat only other animals
Carnivore
Organisms that eat plants and other animals
Omnivore
Alternation of muscular contraction and relaxation of smooth muscles that line the alimentary canal forcing food through
Peristalsis
ringlike valves that regulate the passage of food into and out of the stomach
Sphincter
A hormone produced by adipose cells that suppresses appetite
Leptin
In general and on average, 12-24 hours are required from ingestion to elimination
true
Because the stomach is not expandable, most animals must eat constantly
false
The small intestine is longer than the large intestine
true
E. coli in the colon are not beneficial in any way.
false
Low-carb diets are perfect
false
The location of exchange
Respiratory surface
The flow of water air over the respiratory surface
Ventilation
Respiratory tubes in invertebrates that open to the outside air
Tracheae
The joint passage for food and air
Pharynx
Voice box
Larynx
Wind pipe
Trachea
Tubes branching off the trachea and leading to the lungs
Bronchi
Finer tubes that branch off of the structure in Bronchi
Bronchioles
Millions of tiny air sacs that are the terminal ends of the structure in Bronchioles
Alveoli
The alternation of inhalation and exhalation
Breathing
Heart structure that receives blood from the veins
Atrium
Heart structure pumps blood out the heart
Ventricle
Smaller arteries that branch off into capillaries
Arterioles
Smaller veins that begin the return path to the heart.
Venules
Term for the volume of blood that each ventricle pumps each minute
Cardiac Output
A hissing sound generated by the backflow of blood from a defective valve
Murmur
Pacemaker of the heart rhythms that may be detected by ECG
Arrythmia
The rhythmic stretching of the arteries
Pulse
The medical term for a blood pressure cuff
Sphygmomanometer
Surfaces for gas exchange must be moist
true
Skin breathers typically live in dry environments
false
Although they have to work harder, gills are more efficient at extracting air than lungs
true
Lung breathing was not a required adaption in the evolutionary move from water to land.
false
Smoking causes more deaths per year in the U.S than accidents, alcohol, drug abuse, HIV and murder combined
true
Your face is going to look like this after you keep dipping
true
The movement of aquatic organisms is crucial to sustaining blood flow.
true
The wall of the left ventricle is thicker because it pumps to the systemic circuit
true
In general, an athlete will have a higher heart rate than a non-athlete while performing the same activity
false
The lub-dup sound is created by the recoil of blood against the valves of the heart
true
Smoking does not increase the risk of cardiovascular disease
false
Capillaries have the thinnest walls of all blood vessels
true
Blood is mostly plasma
true
Red blood cells are the least common cellular element in the blood
false
Injured blood vessels do not heal themselves
false