Bio 211- Exam 1 Questions With
Correct Answers.
Feedback mechanisms - answerNegative 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.
Kin...
EXAM STUDY MATERIALS July 26, 2024 9:30 AM Bio 211 - Exam 1 Questions With Correct Answers. Feedback mechanisms - answer✔✔Negative feedback=Stimu lus 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 - answer✔✔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 t o 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 - answer✔✔Characteristi cs that we see from a higher level to a lower level in bio organization. Biological organization - increasing levels comes greater complexity. - answer✔✔Chemical - lowest level -atoms, molecules, proteins. organelles, cells. Organelles Tissue level - collect ion 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." Biosphere -the Ear th's eco system, the largest ecosystem. EXAM STUDY MATERIALS July 26, 2024 9:30 AM Characteristics that define life - answer✔✔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 - answer✔✔The science of life. The science that helps us understand ourselves, other living organisms, and the interrelationship between living organisms. Domains - answer✔✔Bacteria (same as kingdom) Archae (same as Archae Bacteriaa) Eukarya w hich includes Protista, Fungi, Plantae, Animalia, and Eukarya. Discovery Science - answer✔✔We observe the data and draw conclusions. There are specific observations which lead to general conclusions. Scientific Method - answer✔✔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 varia bles. Element - answer✔✔Is determined by the atomic number which is the proton number. Four elements that make up 96% of substances in life? - answer✔✔Carbon, Hydrogen, Oxygen, and Nitrogen. What are the constituents/subatomic particles of an atom? - answe r✔✔Protons, Neurons, Electrons. Describe the difference between atomic number and atomic mass. - answer✔✔The atomic number is the amount of protons determined. The atomic mass is the amount of protons and neutrons added together. valence shell - answer✔✔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 - answer✔✔Bonds -Electrons like to be shared or transfer -
nonpolar is equally strong. Polar covalent Bonds - answer✔✔Unequal sharing. When one element is more electronegative than the other. Water or H2O: Electrons are no t shared equally Oxygen is more electronegative than Hydrogen so partial charges exist on the O and H atoms. p.21 Non-polar covalent bond - answer✔✔The electrons in a C -H bond are shared equally. Hydrogen molecule: H -H.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Thebright. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
