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Irish study guide for midterms
Please add anything else we need to know!!! Sometimes i miss things...
Terms in this set (33)
Describe how to experimentally determine the amount of stored energy in food
Firstly, you measure the mass of the food. Than you burn the food and measure how much energy is released, by burning the food under a can of water. To make sure that no energy escapes, you can use a screen around the experiment, or a calorimetry. Afterwards you measure the mass of the food again and use the formula (change in temp/change in mass).
first law of conservation of energy
energy can be transferred or transformed into different forms of energy
Second law of conservation of energy
Energy is always conserved in any transfer process
Third law of conservation of energy
Energy cannot be created nor destroyed
first law of thermodynamics
heat entering a system adds that amount of energy to the system
second law of thermodynamics
heat always flows from an area of higher temperature to an area of lower temperature.
Fermentation chemical equation
(SUCROSE) (WATER) (ETHANOL) ~TYPE OF ALCHOL
can be replenished in one human life time
cannot be replenished in one human life time
Organisms that obtain energy by consuming "eating" other organisms
An organism that feeds on dead or decaying matter
capable of producing their own food by photosynthesis. It is done by green plants and protozoa
consumers that only eat plants
consumers that eat both plants and other animals
consumers that eat other animals
Are more "plant like". They are capable of photosynthesis, which means that they can make their own food
are more "animal like". They feed on phytoplankton and other organisms.
"tiny wanderer". They are microscopic organisms which live in both fresh and salt water.
O6*. Is food for the plant. It is the primary energy source for virtually all other living organisms. It is an example of a simple carbohydrate/ Carbohydrates have 4 cal/gram. An example of a complex carbohydrate is starch.
(Feeding levels) Chemical energy is transferred to higher levels. From one to another 80% is "lost" - not consumed, turned into different forms (most commonly heat), or is left as undigested food.
Used to make bear, and wine. It is also used to rais bread. It is a single celled fungi, and it is most commonly found in your intestines, water, and on your skin. It does fermentation.
Has 4 cal/gram. It is required for survival, repair, and growth of cells. If protein loses its shape, it can no longer function properly. It is found in meat/muscles, dairy, and beans. Albumin and Enzymes (which speed up reactions) are two types of protein. Protein is also a nutrient.
Must remember about stored energy:
Better fuel burns less in a given amount of time
the chemical reaction which releases energy from food
Aerobic cellular respiration
requires oxygen gas (O(lil)2). It is the most common form of cellular respiration, which means that it is done by most organisms including plants and animals. It is the most effective form of cellular respiration because it gets the most energy out of each glucose molecule.
Anaerobic cellular respiration
Does not require oxygen gas (O(lil)2). Fermentation is one type of it.
Which form of cellular respiration do human and yeast do?
the chemical break down of a substance by yeas or bacteria.
Includes reptiles and fish. Fish migrate to maintain internal temperature. Some hibernate during the peak of winter in order to maintain internal temperature. poikilos - "changeable," "thermo" - heat
classified as "cold blooded" but some can maintain higher internal temperatures than some "warm blooded" animals.
are considered "warm blooded". This classification included birds and mammals. They maintain fairly constant body temperatures despite changes in the environment temp.
"homos" - same
eat more food to create heat to maintain internal temperature.
number of captured otters/x = total number of tagged otters
cross thingy then divide by coefficient
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