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BIO 203 MIDTERM EXAM QUESTIONS AND ANSWERS. VERIFIED 2025/2026.

BIO 203 MIDTERM EXAM QUESTIONS AND 100% CORRECT ANSWERS LATEST UPDATE!!...

Which of the following is NOT TRUE of animals that have open circulatory systems? They are not vertebrates. They have a mechanism to pump circulatory fluid. They have lower pressure in their circulatory compartments compared to animals with closed circulatory compartments. Almost all of them have specialized gas transporting blood cells - answerAlmost all of them have specialized gas transporting blood cells At the point in the cardiac cycle when the volume of blood in the right ventric...

Nutrition - ANSWERProcess by which chemical substances (nutrients) are acquired from the environment and used in cellular activities. Macronutrients - ANSWERRequired in large quantities; play principal roles in cell structure and metabolism (proteins, carbohydrates) Doorway in the Kreb's Cycle (TCA) - ANSWERA preparation / linking step. Glycolysis produces pyruvate but the Kreb's Cycle will only accept Acetyl CoA so the doorway step further metabolizes 2 pyruvate to 2 Acetyl CoA. ...

The best experimental design ______. A) includes a large sample size for each condition B) includes a control C) alters only one condition between the controls and the experimental conditions D) includes a large sample size and a control and alters only one condition between the controls and the experimental condition - ANSWERD A solution with a pH of 5 has how many more protons in it than a solution with a pH of 7? A) 5 times B) 10 times C) 100 times D) 1000 times - ANSWERC Con...

Approximately how many microbes inhabit our bodies? - ANSWERTrillions Which of the follow best describes normal microbiota? - ANSWERmicrobes that are associated with the body naturally If you start with 3 bacterial cells how many would you have after 40 minutes if the generation time is 10 minutes? (assume optimal conditions) - ANSWER30 Which of the following is not a barrier as described under Standard/Universal Precautions? - ANSWERbodily fluids Standard/Universal precautions were ...

About 25 of the 95 natural elements are known to be essential to life. Which 4 of these 25 elemts make up approximately 96% - ANSWERE-Carbon, hydrogen, nitrogen,oxygen The slight negative charge at on need of the water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called? - ANSWERE-hydrogon bond The following structure not found in prokaryotic cells is unique to eukaryotic cells A) flagella B) mitochondria C) plasma membrane D)...

Anatomy - ANSWERStructure of the body parts and how they relate to one another Physiology - ANSWERFunction of the body's structural machinery. (Events happening in the body on a cellular or molecular level) Control Center - ANSWER"Brain" determines the set point/level of variation at which the variable is to be maintained. It then analyzes the information it receives and then determines the appropriate response or course of action Efferent Pathway - ANSWEROutput of information ...

Which of the following is true for catabolic pathways? A) they are usually non-spontaneous chemical reactions B) they consume energy to build up polymers from monomers C) they release energy as they degrade polymers to monomers D) they represent endergonic reactions E) none of the above - ANSWERC) they release energy as they degrade polymers to monomers Enzymes speed up metabolic reactions by A) increasing the activation energy barrier B) being consumed during the reaction C) creati...

Golgi apparatus - ANSWERWhat is the structure that packages materials for secretion? Nuclear envelope - ANSWERWhat is the porous double-membrane surrounding the nucleus? Secrete sebum to condition skin. - ANSWERWhat is the function of sebaceous glands? Sweat + blood vessels. - ANSWERWhat 2 effector organs are discussed in thermoregulation? Epidermis ONLY. - ANSWERA first degree burn damages the... Stratum corneum - ANSWERDandruff occurs in which layer of skin? Golgi apparatus -...