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BIO 243 Exam 3 Questions with Correct Answers Latest Update 2025/2026 ventral most neurons in gray matter - Answers Somatic Motor Neurons dorsal most neurons in gray matter - Answers Somatic Sensory Neurons second most ventral neuron in gray matter - Answers visceral motor neurons second most dorsal neuron in gray matter - Answers visceral sensory neurons Norepinephrine class - Answers both Dopamine class - Answers both Serotonin class - Answers Inhibitory Histamine class - Answers bot...

BIO 243 Midterm Exam Questions with Correct Answers Latest Update 2025/2026 genetics - Answers the study of genes gene - Answers functional unit of heredity and variation molecular genetics - Answers the study and function of genes at the molecular level allele - Answers variant forms of a gene (eye colour) genotype - Answers genes inherited by an organsm phenotype - Answers visible traits ( behavior, eye colour) genome - Answers entire DNA sequence of an organsim gene expression - Answe...

BIO 243 EXAM 1 QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026 Human Blood p.H - Answers 7.35-7.45 Buffers - Answers Chemicals that combine with excess acids or bases to help minimize pH changes in body fluids positive feedback - Answers Feedback that tends to cause the level of a variable to change in the same direction as an initial change Ex: Labor Contractions, Blood Clotting Negative Feedback - Answers The most common homeostatic control mechanism. The net effect is that the out...

BIO 243 Exam 2 Questions with Correct Answers Latest Update 2025/2026 major functions of skeletal system - Answers encasement and protection of organs, support, movement, hematopoiesis, calcium and phosphate homeostasis structure of skeletal system - Answers Made up of osseous tissue + bone marrow Very vascular and innervated by sensory neurons Periosteum layer - Answers outermost layer, dense irregular tissue compact bone - Answers dense, hard bone that provides resistance to compression ...

BIO 243 Final Exam Questions with Correct Answers Latest Update 2025/2026 What did Darwin think about natural selection ? - Answers he reasoned that if a PERSON can select different characteristics when breeding organisms the so can NATURE Analogous features... - Answers share a similar function, but NOT common ancestry Homologous features... - Answers have simimilar internal bone structure inherited from common ancestor -ex. wings of birds and bats what was darwin missing when he formul...

BIO 243 Lab Final Exam Questions with Correct Answers Latest Update 2025/2026 What is the DNA chain made of? What are the parts? - Answers The DNA chain is made of deoxyribonucleotides. The three parts are N-bases, sugar, and phosphate group(s). Name the pyrimidines. How many ring structures do they have? - Answers Thymine and Cytosine. They are single ring structures. Name the purines. How many ring structures do they have? - Answers Adenine and Guanine. They are double ring structures. How...

This document provides 30 multiple-choice practice questions with verified A+ answers for the Bio 243 Practice Lab Exam (2025/2026 academic year). It is tailored to help students revise and test their understanding of laboratory-based biological concepts, methodologies, and statistical analysis in a university-level biology course. The content covers a wide range of foundational topics including: Cell division, such as chromosome behavior through multiple rounds of mitosis and identifying ...