Which form of energy is the primary one used by living things to store potential energy? Нeat Light Kinetic Chemical

Metabolism is a collective term for thousands of: Organic compounds in a cell Cells in an organism O Molecular reactions in a cell O Enzymatic reactions necessary for life

What type of molecule absorbs light energy and gets "excited"? pigment ADP electron carrier chromosome

Which of the following cellular processes or reactions could decrease the entropy of an organism?     Glycolysis     Hydrolysis of ATP     Calvin cycle     Citric acid cycle     Metabolism of starch to produce glucose

Why do some chemical reactions need to have a catalyst

Which of the following is NOT true about enzymes?   Enzymes are proteins   Enzymes raise the activation energy of a chemical reaction   Enzymes help a chemical reaction to occur more quickly   Enzymes have an active site   Enzymes may be controlled by feedback inhibition

indicate whether the following reactions are endergonic, requiring energy input, or exergonic, releasing energy:   endergonic, exergonic     Definition Word Photons from the Sun reach planet Earth   Plants use sun energy to convert carbon dioxide into sugars   Living organisms break down sugars into carbon dioxide and water   Living organisms make ATP from ADP and phosphate   Living organisms break down ATP into ADP and phosphate   Living organisms use ATP to power metabolic function and other things such as muscle movement

ATP is a compound that is formed when O O O digestive enzymes break amino acids into smaller parts. energy stored in chemical bonds is released during cellular respiration. chemical bonds between carbon atoms are formed during photosynthesis. energy stored in nitrogen is released, forming amino acids.

Which statement does not describe an enzyme? enzymes are used up (consumed) by a reaction in biological systems, enzymes are typically proteins enzymes catalyze reactions enzymes help make and break bonds between molecules all of the statements are true

How does energy enter an ecosystem, and get into a form organisms can use directly? O mitosis cellular respiration the water cycle O photosynthesis