Mcb exam 1 - Study guides, Class notes & Summaries
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MCB Exam 1 Review Questions and Answers Already Passed
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MCB Exam 1 Review Questions and 
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Question: What is the central dogma of molecular biology? 
Answer: The central dogma of molecular biology describes the flow of genetic information 
from DNA to RNA to protein. 
Question: What are the key differences between prokaryotic and eukaryotic cells? 
Answer: Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic 
cells have a nucleus and complex organelles such as mitochondria and the endoplasmic 
retic...
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MCB Exam 1 Questions & Answers 2023/2024
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MCB Exam 1 Questions & Answers 2023/2024 
 
 
A unifying principle - ANSWER-What does genetics provide biology with? 
 
Bacteria and Archaea - ANSWER-What are 2 prokaryotes? 
 
Neither - ANSWER-Are viruses are not prokaryotic or eukaryotic? 
 
1.) Interphase 
2.) Mitosis - ANSWER-What are the two main phases of the cell cycle? 
 
Cell growth - ANSWER-What happens G1 
 
Non-dividing phase - ANSWER-What is G0 
 
- Can DNA replicate 
- It corrects the proteins present - ANSWER-What is the point of ...
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MCB EXAM 1 QUESTIONS & ANSWERS 2023/2024
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MCB EXAM 1 QUESTIONS & ANSWERS 2023/2024 
 
 
How large is our genome? - ANSWER-3200 million bp 
 
How many base pairs does the genome contain? - ANSWER-3 × 10^9 base pairs. 
 
How long is the genome when fully extended? - ANSWER-20,000 phone books long 
 
What is Chromatin? - ANSWER-the fibrous complex of eukaryotic DNA and histone proteins. 
 
Which are the main Histones? - ANSWER-H1, H2A, H2B, H3, and H4. 
 
What's the charge (polarity) of Histones? - ANSWER-Positive 
 
What amino acid resi...
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MCB EXAM 1 STUDY GUIDE
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Define cell, microbe and list hallmarks of cell. What is the status of Prions, virions, and viruses? - Cell: fundamental unit of life. Cell membrane, genetic material, self replication, regulation, similar macromolecules, energy use. 
 
Microbe: organism that cannot be seen without a microscope. 
 
Prions, viruses, virions are acellular and nonliving. 
 
List effects of microbes on ecosystem. List extreme conditions at which microbes can thrive. - Earliest photosynthetic organisms, dramaticall...
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MCB Exam 1 Questions & Answers 2023/2024
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MCB Exam 1 Questions & Answers 2023/2024 
 
 
Microbiology - ANSWER--the branch of biology that studies microbes 
 
Microbiology distinguishing characteristics - ANSWER-1. The size of the organisms studied 
2. The techniques used to study them 
 
Cellular organisms - ANSWER--made up of cells 
-fungi, protists, bacteria, and archaea 
 
Acellular organisms - ANSWER--not made of cells 
-viruses, viroids, satellites, and prions 
 
Virus - ANSWER--protein and nucleic acids 
 
Viroid - ANSWER--RNA on...
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NBME Exam Bundle (Graded A)
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MCB Exam 1 Questions & Answers 2023/2024
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MCB Exam 1 Questions & Answers 2023/2024 
 
 
Cell Theory - ANSWER-1. All living creatures are made of one or more cells. 
2. The cell is the structural unit of life. 
3. On the earth today, cells only arise from division of pre-existing cells. 
4. Earlier versions of Cell Theory thought that living cells could arise from non-living material. 
 
Differences between prokaryotic and eukaryotic - ANSWER-a. Eukaryotes have membrane-bound organelles; prokaryotes do not. 
b. Prokaryotes have relativel...
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MCB Exam 1 Questions & Answers 2023/2024
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MCB Exam 1 Questions & Answers 2023/2024 
 
 
Sugar - ANSWER-Group of organic compounds containing C, H and O. Sugars are hydrophilic. Examples: Glucose, fructose are monosaccharides, Sucrose is a disaccharide. Cellulose and Starch are polymers of glucose 
 
Lipids - ANSWER-Hydrophobic, composed of C, H and some O. Example: triglyceride, 3 FA attached to a glycerol molecule. Can be saturated (have no double bonds), monounsaturated (1 double bond) or polyunsaturated (more than 1 double bond) 
 
P...
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MCB EXAM 1 QUESTIONS AND ANSWERS
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How large is our genome? - Answer-3200 million bp 
 
How many base pairs does the genome contain? - Answer-3 × 10^9 base pairs. 
 
How long is the genome when fully extended? - Answer-20,000 phone books long 
 
What is Chromatin? - Answer-the fibrous complex of eukaryotic DNA and histone proteins. 
 
Which are the main Histones? - Answer-H1, H2A, H2B, H3, and H4. 
 
What's the charge (polarity) of Histones? - Answer-Positive 
 
What amino acid residues are responsible for that net charge? - An...
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MCB Exam 1 Review Questions & Answers 2023/2024
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MCB Exam 1 Review Questions & Answers 2023/2024 
 
 
1. Highly condensed chromatin that is transcriptionally inactive is called - ANSWER-Heterochromatin 
 
1. If you were to make a synthetic form of DNA in which the phosphate group is substituted by a chemical group exhibiting a net positive charge, the resulting synthetic DNA" - ANSWER-Would likely not be packaged by histones 
 
The major structural proteins in human chromatin are known as - ANSWER-histones 
 
The main function of the centrome...
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