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Examen
Biology 190 Final Exam Study Guide Questions with Actual Complete Solutions 2025-2026 Updated.
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---15diciembre 20252025/2026A+
- Nucleotide structure - Answer monomers of nucleic acids 
every nucleotide consists of 3 parts: 5 carbon sugar, negatively charged phosphate group, nitrogenous base 
 
Nucleic acid - Answer includes DNA and RNA 
polymer consisting of many nucleotides’ monomers 
two strands held together by hydrogen bonds 
 
DNA - Answer double stranded helical nucleic acid molecule consisting of nucleotide monomers with deoxyribose sugar and nitrogenous bases A, T, C, G 
provides directions f...
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Examen
BIOL 190 LAB TMCC Study Guide Questions with Actual Answers 2025-2026 Edition.
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---3diciembre 20252025/2026A+
- How to carry a microscope - Answer place one hand under base while holding arm with other hand 
 
Cleaning the microscope - Answer Always clean the outsides of all lenses, objectives and eyepieces, before& after using the microscope. Only use kleenex 
 
First view of microscope - Answer Always view your slide first with the 4X objective. 
 
Oil and the microscope - Answer oil is only used with 100x objective lens 
 
Diffusion - Answer Movement of molecules from an a...
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Examen
BIOL 190: Chapter 12 Study Guide Questions with Solved Solutions 2025-2026 Updated.
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---9diciembre 20252025/2026A+
- Gene Regulation - Answer the ability of cells to control the expression of their genes 
 
Why is regulation good? - Answer - ensures proteins are produced at the correct time and in correct amount 
- conserves energy by producing only what is needed 
 
Constitutive genes - Answer relatively constant levels of expression 
- they make proteins that are constantly required 
 
Many proteins regulate gene expression through - Answer binding of DNA 
 
To utilize lactose, E.co...
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Examen
Bio 190 Exam 3 Test Questions with Complete Answers 2025-2026 Updated.
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---7diciembre 20252025/2026A+
- Translational - Answer Step of controlling gene expression by allowing mRNA access to a ribosome 
faster way to get proteins 
mRNA ready to go but blocked from ribosomes 
RNAi = RNA interference 
Small RNAs block mRNA from the ribosomes 
 
Hydrophobic - Answer Type of ligand that binds intracellular receptors 
 
Ligand - Answer Small molecule or protein used to send a cellular signal; binds a receptor 
 
Neuralation - Answer Developmental stage where the central nervou...
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Examen
Bio 190 a Chapter 11.1 Test Questions and Answers.
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---2diciembre 20252025/2026A+
- human genome - Answer 22,000 protein-encoding genes 
 
non-coding RNAs (ncRNAs) - Answer RNA molecules that do not encode polypeptides 
- more abundant than mRNA 
- 20% of transcription involves production of mRNA 
 
what does ncRNA binds to? - Answer DNA, another RNA, proteins/small molecules 
 
what allows ncRNA to bind? - Answer complimentary base pairing 
- allows ncRNA to affect processes of DNA replication/transcription/translation 
 
stem-loop structures - Answer ...
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