Exam (elaborations)
2024 BIO 101 EXAM 1 WITH CORRECT ANSWERS
- Course
- Institution
2024 BIO 101 EXAM 1 WITH CORRECT ANSWERS
[Show more]
Content preview
2024 BIO 101 EXAM 1 WITHCORRECT ANSWERS
What is Biology? - CORRECT ANSWERS-Study of life; encompasses everything
-biomolecular biology and technology have brought around a new era for
biology
What are the major characteristics of Life? - CORRECT ANSWERS-1)
reproduction (DNA (deoxyribose nucleic acid); double helix shape; stores
genetic info)
2) cellular repsiration (used to creat energy) (metabolism; need it to perform
basic functions of life; food (carbs, proteins, lipids/fats, vitamins/minerals)
3) adaptation/evolve (over large periods of times traits of organizations)
modified
4) growth and development (DNA lays out the "plan")
5) organization (very specific; organization of organs/structure)
6) cells (basic building blocks of life; need only one to be considered living)
7) respond (response to stimuli (light, touch, heat, etc.); need in order to
survive)
Structure of Proteins - CORRECT ANSWERS-- very complex structure
- different order of structure based on a hierarchy
1) primary structure: just amino acids connected in one strand (like a
ribbon)
2) secondary structure: folding/ coiling; strengthns a whole lot (ie spider silk)
3) tertiary structure: taking secondary "coil" and folding all over the place
4) quaternary structure: only 1 protein with more than one chain of amino
acids (ie hemoglobin)
Lab Time with Proteins - CORRECT ANSWERS-- indicator solution: biuret
reagent
- stains peptide bond
- positive test: blue to a darker purple
- good qualitative test
- protein: BSA
Graphind Data and Standard Curves - CORRECT ANSWERS-- independent and
dependent variables
- standard curve
1) have to know concentration to plot against unknown substance
, 2) read absorbence (how much light a substance can absorb)
- colorimeter: tool that shows absorbence of light (measures the
transmitance of light)
- pass light through substance
- darker the solution; greater absorbance
- lighter the solution; less absorbance
- test amount of absorbence in the amount of protein of a substance
(independent= protein; absorbance= dependent)
What is a cell? - CORRECT ANSWERS-- basic building blocks of life
- not always apparent; first seen with a microscope
- cells were discovered by Hook in 1655
- first cells discovered were from cork
- theory wasn't generally accepted due to the challenge of trying to convince
people of this drastic change
What is cell theory? - CORRECT ANSWERS-- proposed in 1800's
- lowest level of structure perfoms all chracteristics of life
- arise from previously existing cells
What is metabolism? - CORRECT ANSWERS-- energy breakdown; needed for
food
- glucose is the "best"
- C6H12O6 (formula for glucose)
- breaks (catabolic reaction) down to carbon dioxide and water [ CO2 + H2O]
Difference between anabolic and catabolic reactions? - CORRECT ANSWERS--
anabolic- building up of molcules, etc.
- ie: anabolic steroids (build up muscle)
- catabolic- breaking down of molecules
Bean Beetle Lab - CORRECT ANSWERS-- learn how to determine if alive or
dead
- if alive, beetles should be giving off carbon dioxide
- if dead, bean beetles may be giving off CO2 but only
because the decomposition process
- CO2 measured in ppm
- calculate amount per bean beetle
x (ppm)/ number of bb = ppm/bb
every 15 mins = [x / # of bb] / 15
every 1 hour = [x/ #of bb] x 4
every sec = [x / # of bb] / 60
- used loggerpro prgm; used CO2 probe
Are viruses alive? - CORRECT ANSWERS-- depends on what you argue
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 Elitaa. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now