BIO 109 Exam 1 2025/2026 Exam
Questions and Answers | A+ Score
Assured
Demonstrate the steps of the scientific process using a real-world example:
- 🧠ANSWER ✔✔Question, hypotheis, experiment, data analysis, and
conclusion
-starbucks example
Describe stage 1 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-the synthesis of small organic molecules, meaning the
production of smaller molecules like amino acids and nucleotide
monomers.
Describe stage 2 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-those smaller molecules join together to form even bigger
molecules known as macromolecules. This is how we get our proteins and
nucleic acids.
1
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,Describe stage 3 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-those macromolecules then get packaged into what is
known as pre-cells. These are essentially parts of membranes that
maintained an internal chemistry different from the surroundings.
Describe stage 4 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-you have the origin of self-replicating molecules that
eventually made inheritance of genetic material possible.
What is a biofilm? - 🧠ANSWER ✔✔a surface-coating cooperative colony of
prokaryotes.
Name three places you might find a biofilm. - 🧠ANSWER ✔✔can form
pretty much anywhere but three places for example would be
-rocks
-metal
-plastic
How do prokaryotes reproduce? - 🧠ANSWER ✔✔Binary Fission
2
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STATEMENT. ALL RIGHTS RESERVED
, What is Binary Fission? - 🧠ANSWER ✔✔-a means of asexual reproduction
in which a parent organism, often a single cell, divides into two individuals
of about equal size.
-this happens when cells copy their DNA almost continuously and divide
again and again.
What's an endospore? - 🧠ANSWER ✔✔a thick-coated, protective cell
produced within the prokaryotic cell
How are endospores beneficial to reproduction? - 🧠ANSWER ✔✔- they
essentially protect prokaryotes from harsh conditions.
-essentially helps protect the cell as well as help it survive and reproduce.
What are the 4 main modes of nutrition in prokaryotes? - 🧠ANSWER ✔✔-
Photoautotrophs
-Chemoautotrophs
-Photoheterotrophs
-Chemoheterotrophs
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Questions and Answers | A+ Score
Assured
Demonstrate the steps of the scientific process using a real-world example:
- 🧠ANSWER ✔✔Question, hypotheis, experiment, data analysis, and
conclusion
-starbucks example
Describe stage 1 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-the synthesis of small organic molecules, meaning the
production of smaller molecules like amino acids and nucleotide
monomers.
Describe stage 2 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-those smaller molecules join together to form even bigger
molecules known as macromolecules. This is how we get our proteins and
nucleic acids.
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
,Describe stage 3 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-those macromolecules then get packaged into what is
known as pre-cells. These are essentially parts of membranes that
maintained an internal chemistry different from the surroundings.
Describe stage 4 of the four-stage hypothesis for the origin of life. -
🧠ANSWER ✔✔-you have the origin of self-replicating molecules that
eventually made inheritance of genetic material possible.
What is a biofilm? - 🧠ANSWER ✔✔a surface-coating cooperative colony of
prokaryotes.
Name three places you might find a biofilm. - 🧠ANSWER ✔✔can form
pretty much anywhere but three places for example would be
-rocks
-metal
-plastic
How do prokaryotes reproduce? - 🧠ANSWER ✔✔Binary Fission
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, What is Binary Fission? - 🧠ANSWER ✔✔-a means of asexual reproduction
in which a parent organism, often a single cell, divides into two individuals
of about equal size.
-this happens when cells copy their DNA almost continuously and divide
again and again.
What's an endospore? - 🧠ANSWER ✔✔a thick-coated, protective cell
produced within the prokaryotic cell
How are endospores beneficial to reproduction? - 🧠ANSWER ✔✔- they
essentially protect prokaryotes from harsh conditions.
-essentially helps protect the cell as well as help it survive and reproduce.
What are the 4 main modes of nutrition in prokaryotes? - 🧠ANSWER ✔✔-
Photoautotrophs
-Chemoautotrophs
-Photoheterotrophs
-Chemoheterotrophs
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
