Biology Semester 1

independent variable – condition or factor that is manipulated by a scientist during an experiment
Carbohydrates that are sugars (monosaccharides and disaccharides) often end in the suffix. – -ose
substrate – Reactant to which an enzyme binds.
ecological species concept – A definition of species in terms of ecological roles (niches).
atrium – a heart chamber that receives blood
Nuclesomes – when the DNA is coiled around several histones
Photosynthesis – Chemical process by which plants use light energy to make sugar from water and carbon dioxide.
Density _____________ limiting factors are a limiting factor that limits the growth of a population regardless of its size – Independent
Which pathway in aerobic respiration will produce ATP, NADH2, and carbon dioxide among other compounds?
facilitated diffusion – A process in which substances are transported across a plasma membrane with the concentration gradient with the aid of carrier (transport) proteins; does not require the use of energy.
2.3.4 Compare prokaryote and eukaryote cells – Similarities:
◾Both have a cell membrane
◾Both contain ribosomes
◾Both have DNA and cytoplasm
Secondary succession – Succession following a disturbance that destroys a community without destroying the soil
Why do pathogens enter through the gas-exchange system and digestive system? (3 reasons) – These places have:
1. A large surface area.
2. They are thin (short diffusion pathway).
3. Have a rich blood supply.
Which pаthwаy in аerоbic respiratiоn will prоduce ATP, NADH2, and carbon dioxide among other compounds?
double circulation – Circulation with separate pulmonary and systemic circuits, in which blood passes through the heart after completing each circuit; ensures vigorous blood flow to all organs.
sensory transduction – The conversion of a stimulus signal to an electrical signal by a sensory receptor.
water displacement – used to measure the volume of an irregular object

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