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BIO 168 midterm Exam with complete
solutions latest version
Chemical and cellular levels from least to most complex - CORRECT ANSWER-
Chemical, cellular, tissue, organ, organ system, organism
homeo- - CORRECT ANSWER-Unchanging
-stasis - CORRECT ANSWER-standing
Homeostasis - CORRECT ANSWER-presence of stable internal environment
What would happen if one fails to maintain homeostasis? - CORRECT ANSWER-Illness
of death
What are the components of a homeostatic regulatory mechanism? - CORRECT
ANSWER-Receptor (sensor), control center (integration center), and effector
Receptor - CORRECT ANSWER-sensor, sensitive to environmental change
control center - CORRECT ANSWER-integration center, processes information from the
receptor and sends out commands
effector - CORRECT ANSWER-responds to commands opposing stimulus
anatomical position - CORRECT ANSWER-position in which the body is erect, with
arms at the sides, palms and toes directed forward, feet together, and eyes looking
forward
What are the nine abdominopelvic regions from top left to bottom right? - CORRECT
ANSWER-Right hypochondriac, right lumbar, right inguinal, epigastric, umbilical,
hypogastric, left hypochondriac, left lumbar, left inguinal
What are the two pleural cavities in the throracic cavity? - CORRECT ANSWER-Lined
by pleura, contains the lungs
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What is the mediastinum in the thoracic cavity? - CORRECT ANSWER-contains
connective tissue and the pericardial cavity containing the heart
What may the nucleus contain in an atom? - CORRECT ANSWER-One or more
protons, may also contain neutrons
What are isotopes? - CORRECT ANSWER-atoms with the same number of protons but
different number of neutrons
What is the valence shell and what does it determine about an atom? - CORRECT
ANSWER-the outermost energy level, determines the behavior
What are ionic bonds? - CORRECT ANSWER-transfer of one or more electrons from
one atom to another to achieve stability
What are covalent bonds? - CORRECT ANSWER-sharing of one or more electrons
between atoms to complete their outer shell
What is dehydration synthesis? - CORRECT ANSWER-formation of a complex
molecule by removing a water molecule, condensation
What is a metabolic pathway? - CORRECT ANSWER-a series of interlocking steps,
each controlled by a specific enzyme
What happens first in the metabolic pathway? - CORRECT ANSWER-substrate binds to
active site on enzyme forming enzyme-substrate complex
What happens second in the metabolic pathway? - CORRECT ANSWER-substrate
binding results in a temporary shape of enzyme
What happens third in the metabolic pathway? - CORRECT ANSWER-Completed
product detaches from the active site
What happens last in the metabolic pathway? - CORRECT ANSWER-enzyme is able to
repeat process and is not consumed
What are carbohydrates? - CORRECT ANSWER-organic molecules containing carbon,
hydrogen, and oxygen in a ratio of 1:2:1
What are prostaglandins? - CORRECT ANSWER-Short chain FA that in which five of
the C atoms are joined in a ring
What sugar is in DNA? RNA? - CORRECT ANSWER-deoxyribose and ribose
What nitrogenous bases are in DNA? RNA? - CORRECT ANSWER-adenine, guanine,
thymine, cytosine (AGTC) and adenine, guanine, cytosine, uracil (AGCU)
BRAINSCAPE1
BIO 168 midterm Exam with complete
solutions latest version
Chemical and cellular levels from least to most complex - CORRECT ANSWER-
Chemical, cellular, tissue, organ, organ system, organism
homeo- - CORRECT ANSWER-Unchanging
-stasis - CORRECT ANSWER-standing
Homeostasis - CORRECT ANSWER-presence of stable internal environment
What would happen if one fails to maintain homeostasis? - CORRECT ANSWER-Illness
of death
What are the components of a homeostatic regulatory mechanism? - CORRECT
ANSWER-Receptor (sensor), control center (integration center), and effector
Receptor - CORRECT ANSWER-sensor, sensitive to environmental change
control center - CORRECT ANSWER-integration center, processes information from the
receptor and sends out commands
effector - CORRECT ANSWER-responds to commands opposing stimulus
anatomical position - CORRECT ANSWER-position in which the body is erect, with
arms at the sides, palms and toes directed forward, feet together, and eyes looking
forward
What are the nine abdominopelvic regions from top left to bottom right? - CORRECT
ANSWER-Right hypochondriac, right lumbar, right inguinal, epigastric, umbilical,
hypogastric, left hypochondriac, left lumbar, left inguinal
What are the two pleural cavities in the throracic cavity? - CORRECT ANSWER-Lined
by pleura, contains the lungs
BRAINSCAPE1
, BRAINSCAPE1
What is the mediastinum in the thoracic cavity? - CORRECT ANSWER-contains
connective tissue and the pericardial cavity containing the heart
What may the nucleus contain in an atom? - CORRECT ANSWER-One or more
protons, may also contain neutrons
What are isotopes? - CORRECT ANSWER-atoms with the same number of protons but
different number of neutrons
What is the valence shell and what does it determine about an atom? - CORRECT
ANSWER-the outermost energy level, determines the behavior
What are ionic bonds? - CORRECT ANSWER-transfer of one or more electrons from
one atom to another to achieve stability
What are covalent bonds? - CORRECT ANSWER-sharing of one or more electrons
between atoms to complete their outer shell
What is dehydration synthesis? - CORRECT ANSWER-formation of a complex
molecule by removing a water molecule, condensation
What is a metabolic pathway? - CORRECT ANSWER-a series of interlocking steps,
each controlled by a specific enzyme
What happens first in the metabolic pathway? - CORRECT ANSWER-substrate binds to
active site on enzyme forming enzyme-substrate complex
What happens second in the metabolic pathway? - CORRECT ANSWER-substrate
binding results in a temporary shape of enzyme
What happens third in the metabolic pathway? - CORRECT ANSWER-Completed
product detaches from the active site
What happens last in the metabolic pathway? - CORRECT ANSWER-enzyme is able to
repeat process and is not consumed
What are carbohydrates? - CORRECT ANSWER-organic molecules containing carbon,
hydrogen, and oxygen in a ratio of 1:2:1
What are prostaglandins? - CORRECT ANSWER-Short chain FA that in which five of
the C atoms are joined in a ring
What sugar is in DNA? RNA? - CORRECT ANSWER-deoxyribose and ribose
What nitrogenous bases are in DNA? RNA? - CORRECT ANSWER-adenine, guanine,
thymine, cytosine (AGTC) and adenine, guanine, cytosine, uracil (AGCU)
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