M1 Module Review

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Portage Learning *

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Biology

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Jan 9, 2024

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M1: Module 1 Review Due No due date Points 5 Questions 17 Time Limit None Attempt History Attempt Time Score LATEST Attempt 1 106 minutes 5outof 5 Score for this quiz: 9 out of 5 Submitted Sep 4 at 3:08pm This attempt took 106 minutes. Question 1 0/0 pts Microbiology is the study of what? Your Answer: Microbiology is the study of microbes (microorganisms and viruses) and their biological processes. Microbiology is the study of microbes (microorganisms and viruses) and their biological processes. Question 2 0/0 pts What is the smallest biological unit of life?

ou Answered cell orrect Answers A cell Question 3 0/0 pts What is a macromolecule? Your Answer: Complex molecules that are composed of smaller subunits. A macromolecule is classified as a complex molecule that is composed from smaller subunits. Question 4 0/0 pts What are the four main types of macromolecules? ou Answered . . proteins, nucleic acids, lipids and sugars orrect Answers Proteins, nucleic acids, lipids and carbohydrates Question 5 0/0 pts What various functions do proteins have in a cell?

Your Answer: Facilitate movement, act as enzymes that speed up biochemical processes, play a structural role. Proteins may facilitate the movement of materials in or out of a cell. Some can act as enzymes that catalyze, or speed up, biochemical processes. Others play a structural role while other proteins, such as filaments, enable movement. Question 6 0/0 pts What are the two major types of nucleic acids and their roles? Your Answer: DNA and RNA DNA contains hereditary info and responsible for the inheritable characteristics of living organisms. RNA is responsible for deciphering the hereditary info in DNA and using it to synthesize proteins. There are two major types of nucleic acids: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). Nucleic acids are chemical molecules that carry genetic information within the cell. DNA contains a vast amount of hereditary information and is responsible for the inheritable characteristics of living organisms. RNA is responsible for deciphering the hereditary information in DNA and using it fo synthesize proteins. Question 7 0/0 pts

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What is the plasma membrane, and what is it made up of? Your Answer: The plasma membrane serves the cell as a surrounding barrier that separates the inside of the cell from the outside surrounding environment. The plasma membrane also restricts the movement of materials either in or out of the cell, allowing it to absorb and keep what is needed (influx) while also preventing the escape (out flux) of essential nutrients. The plasma membrane is composed of lipids (hydrophobic hydrocarbons). The plasma membrane serves the cell as a surrounding barrier that separates the inside of the cell from the outside surrounding environment. The plasma membrane also restricts the movement of materials (water, nutrients, etc) either in or out of the cell, thus allowing a cells to absorb and keep what is needed (influx) while also preventing the escape (out flux) of essential nutrients. The plasma membrane is composed of lipids (hydrophobic l hydrocarbons). Question 8 0/0 pts What are the three main components of carbohydrates? Your Answer: Carbon Hydrogen Oxygen

Carbohydrates are composed of carbon, hydrogen and oxygen atoms. Examples would include, C6H1206 (glucose) C12H22011 (sucrose) and C6H1005 (cellulose). Question 9 0/0 pts What is the primary difference between prokaryotic and eukaryotic cells? Your Answer: Eukaryotic cells have a membrane-bound nucleus, while prokaryotes do not. Eukaryotic cells contain a nucleus, a membrane enclosed region within the cell that contains the genetic material. Prokaryotic cells do not have a nucleus and can be further classified as either Bacteria or Archaea. Question 10 0/0pts What are the main morphologies of bacteria? Your Answer: Bacteria can be described as coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum (spiral/corkscrew).

Bacteria can be described as coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum (spiral/corkscrew). Question 11 0/0pts Which group (classification) of microbes is noted for its ability to survive under harsh conditions? Your Answer: Archaea. They are able to survive in extremely harsh environmental conditions such as high salt levels, acid conditions, high temperatures and oxygen-poor conditions. Archaea. They are able to survive in extremely harsh environmental conditions such as high salt levels, acid conditions, high temperatures and oxygen-poor conditions. Question 12 0/0 pts What are the four main classifications of Eukarya? Your Answer: Eukaryotic microorganisms are classified as either belonging to Animalia, Plantae, Fungi or Protista.

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Eukaryotic microorganisms are classified as either belonging to Animalia, Plantae, Fungi or Protista. Question 13 0/0pts Can viruses be classified as either prokaryotic or eukaryotic? Your Answer: No. Viruses are considered neither prokaryotic nor eukaryotic. Viruses are not considered living and do not replicate on their own, meaning they must replicate within a host. No. Viruses are considered neither prokaryotic nor eukaryotic. Viruses are not considered living and do not replicate on their own, meaning they must replicate within a host. Question 14 0/0 pts The lipid bilayer of the plasma membrane is composed of what? Your Answer: The cell membrane is a bilayer composed primarily of amphipathic phospholipids.

The cell membrane is a bilayer composed primarily of amphipathic phospholipids, meaning they contain a polar hydrophilic (water loving) head group and a non-polar hydrophobic (water fearing) tail region. The lipid bilayer is situated in such a way where the non- polar tail groups face inward thus orienting the polar head groups to interact with water both outside and inside of the cell. Question 15 0/0 pts What are the primary cellular organelles described in this module? Be sure to know the roles of each. Your Answer: Ribosomes (protein synthesis), ER (site of protein synthesis), Golgi (protein modification and distribution), lysosomes (waste disposal), mitochondria (ATP generation) and chloroplasts (plants only; site of photosynthesis). Ribosomes (protein synthesis), ER (site of protein synthesis), Golgi (protein modification and distribution), lysosomes (waste disposal), mitochondria (ATP generation) and chloroplasts (plants only; site of photosynthesis). Question 16 0/0pts Be able to identify the primary organelles within a cell as shown in Figures 1.1 (https://portagelearning.instructure.com/courses/1801/pages/1-dot-3- parts-of-a-cell#fig1)_, 1.2 (https://portagelearning.instructure.com/courses/1801/pages/1-dot-3-parts- of-a-cell#fig2) and 1.3

(https://portagelearning.instructure.com/courses/1801/pages/1-dot-3-parts- of-a-cell#fig3).. Your Answer: OK Question 17 515 pts As a reminder, the questions in this review quiz are a requirement of the course and the best way to prepare for the module exam. Did you complete all questions in their entirety? Your Answer: Yes Quiz Score: 5 out of 5

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