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Bio 211- exam 1 Practice Questions and Answers (100% Pass)
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Bio 211- exam 1 Practice Questions and Answers (100% Pass)
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©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AMBio 211- exam 1 Practice Questions and
Answers (100% Pass)
Feedback mechanisms - ✔️✔️Negative feedback=Stimulus invoking a response and the
response inhibiting stimulus. Positive feedback=the stimulus invoking a response and the
response providing a stimulus. IE. platelets increase, cells dividing.
Kingdoms - ✔️✔️Bacteria, Archaea bacteria, (both have organisms that are unicellular-
comprised of prokaryotic cells-no nucleus).
Archaea bacteria - exist extreme (high pH, low pH-Dead Sea).
Protista (Eukaryotic cells-membrane bound nucleus), -looking to divide this by plant
unicellular to multi-cellular.
Fungi, (multi-cellular organisms inovlved in decomposing. distinguising in photosynthesis).
Plantae,
Animalia. - Rather than sun photosynthesis but by foods.
Emergent Properties - ✔️✔️Characteristics that we see from a higher level to a lower level in
bio organization.
Biological organization- increasing levels comes greater complexity. - ✔️✔️Chemical - lowest
level-atoms, molecules, proteins. organelles, cells.
Organelles
Tissue level- collection of similar cells associated with specific function.
Organ level-differentiation cells (different) associate with different organs.- digestive system-
cells break down gastric juices, also generate mucus.
Organisms- Individual living things.
Populations- individuals as one specifics within a general geographic locale.
Communities- all populations within a given geographic locale.
Eco Systems-Include community and the non-living components within the geographic
locale- "mercury levels."
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, ©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AM
Biosphere-the Earth's eco system, the largest ecosystem.
Characteristics that define life - ✔️✔️a. the presence of cells. b. growth c. metabolic processes
d. homeostasis- stimulus response. e. energy utilization. f. reproduction & transmit
information. g. evolution.
Define Biology - ✔️✔️The science of life. The science that helps us understand ourselves,
other living organisms, and the interrelationship between living organisms.
Domains - ✔️✔️Bacteria (same as kingdom)
Archae (same as Archae Bacteriaa)
Eukarya which includes Protista, Fungi, Plantae, Animalia, and Eukarya.
Discovery Science - ✔️✔️We observe the data and draw conclusions. There are specific
observations which lead to general conclusions.
Scientific Method - ✔️✔️1. observation, 2. question 3. hypothesis (needs to be falsifiable)-
note: we are not trying to prove true... we are looking for a strong correlation. There needs to
be an experimental group and control group. dependent variable, independent variable.
Quantitive and qualitative variables.
Element - ✔️✔️Is determined by the atomic number which is the proton number.
Four elements that make up 96% of substances in life? - ✔️✔️Carbon, Hydrogen, Oxygen, and
Nitrogen.
What are the constituents/subatomic particles of an atom? - ✔️✔️Protons, Neurons, Electrons.
Describe the difference between atomic number and atomic mass. - ✔️✔️The atomic number
is the amount of protons determined.
The atomic mass is the amount of protons and neutrons added together.
valence shell - ✔️✔️The outer shell of the atom. When its filled to make the octet. One way
that shells can be filled is through the formation of strong chemical bonds-covalent bond. (p.
21)
Covalent (polar and non-polar) Bonds - ✔️✔️Bonds-Electrons like to be shared or transfer-
nonpolar is equally strong.
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