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BIO 101 EXAM #1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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BIO 101 EXAM #1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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BIO 101 EXAM #1 QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
What is Biology? - ANSWER Study of life; encompasses everything
-biomolecular biology and technology have brought around a new era for biology
What are the major characteristics of Life? - ANSWER 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)
What is a cell? - ANSWER - 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? - ANSWER - proposed in 1800's
- lowest level of structure perfoms all chracteristics of life
- arise from previously existing cells
What is metabolism? - ANSWER - 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? - ANSWER - anabolic- building up of molcules, etc.
- ie: anabolic steroids (build up muscle)
- catabolic- breaking down of molecules
Bean Beetle Lab - ANSWER - 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? - ANSWER - depends on what you argue
- relies on a host cell to reproduce
What is science? - ANSWER - latin "to know"
- asking questions about nature
- believe questions can be answered
Steps of the Scientific Method - ANSWER 1) Make an Observation
2) Ask a question
3) Form a Hypothesis ("if, then" statement)
- accept (agree with conclusions)
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