Bio 168 Exam 1 Study Questions with
Elaborate Answers Already Graded A+
1. What is the difference between anatomy and physiology? - ANSWER
Anatomy is the study of the structure of body parts, while physiology is the
study of the functions of those parts.
2. What are the different levels of organization in the body? - ANSWER The
levels of organization are: chemical, cellular, tissue, organ, organ system,
and organism.
3. What are the body regions, different planes, and body cavities? - ANSWER
Body regions include the head, neck, trunk, upper limbs, and lower limbs.
Planes include sagittal, frontal, and transverse. Body cavities include the
cranial cavity, thoracic cavity, abdominal cavity, and pelvic cavity.
4. What is homeostasis? - ANSWER Homeostasis is the maintenance of a
stable internal environment within the body despite external changes.
5. What is positive feedback? - ANSWER Positive feedback is a control
mechanism that amplifies a response or process, such as during childbirth
when contractions increase until delivery.
6. What is negative feedback? - ANSWER Negative feedback is a control
mechanism that counteracts a change to return the body to its set point, such
as regulating body temperature.
7. What are subatomic particles? - ANSWER Subatomic particles are the
particles that make up an atom, including protons, neutrons, and electrons.
,8. Levels of organization - ANSWER The hierarchical structure of biological
organization, ranging from chemical to organism.
9. Characteristics of life - ANSWER The essential features that define living
organisms: organization, metabolism, responsiveness, growth/development,
reproduction, and waste disposal.
10.Homeostasis - ANSWER The maintenance of stable internal conditions in
an organism despite external changes.
11.Negative feedback - ANSWER A control mechanism that counteracts
deviation from a set point, involving three components: sensor, control
center, and effector.
12.What is happening during the LAG phase of the growth cycle? - ANSWER
retooling for new environment change in gene expression and the number of
cells don't change
13.What is happening during the LOG (exponential) phase of the growth cycle?
- ANSWER maximum growth rate and increase in number
14.What is happening during the stationary phase of the growth cycle? -
ANSWER max population because there are a lot of cells and a decrease in
nutrients, where cell death and cell divisions are equal
15.What is happening during the death phase of the growth cycle? - ANSWER
there is a decrease in population because there are more cells death than cell
divisions because there is no nutrients
, 16.When do endospores happen? - ANSWER between the lag and log phase
because formation, conjugation and mxyospres form
17.When would an antibiotic be most effective? - ANSWER between the
LAG/LOG phase becuase cell walls are being formed
18.Electrolytes - ANSWER Ionic compounds that dissociate into ions in
solution, conducting electricity.
19.Dissociation - ANSWER The process by which ionic compounds separate
into their constituent ions in solution.
20.What is an antiseptic? - ANSWER chemical or agent that kills or inhibits
growth of microorganisms on living skin or tissue (external- mouth, skin)
21.What is an antimicrobial (chemotherapeutic)? - ANSWER chemical used to
treat microbial disease, kills or inhibits growth of pathogens but it may
disrupt normal flora,
applied to living skin or tissue but is generally taken internally, specific target
site on microbial cell so it has selective toxicity
22.What are the basic characteristics of life? - ANSWER The basic
characteristics of life include organization, metabolism, responsiveness,
movement, development, reproduction, and adaptation.
23.Positive feedback - ANSWER A process that amplifies a deviation from the
norm, not involved in homeostasis.
Elaborate Answers Already Graded A+
1. What is the difference between anatomy and physiology? - ANSWER
Anatomy is the study of the structure of body parts, while physiology is the
study of the functions of those parts.
2. What are the different levels of organization in the body? - ANSWER The
levels of organization are: chemical, cellular, tissue, organ, organ system,
and organism.
3. What are the body regions, different planes, and body cavities? - ANSWER
Body regions include the head, neck, trunk, upper limbs, and lower limbs.
Planes include sagittal, frontal, and transverse. Body cavities include the
cranial cavity, thoracic cavity, abdominal cavity, and pelvic cavity.
4. What is homeostasis? - ANSWER Homeostasis is the maintenance of a
stable internal environment within the body despite external changes.
5. What is positive feedback? - ANSWER Positive feedback is a control
mechanism that amplifies a response or process, such as during childbirth
when contractions increase until delivery.
6. What is negative feedback? - ANSWER Negative feedback is a control
mechanism that counteracts a change to return the body to its set point, such
as regulating body temperature.
7. What are subatomic particles? - ANSWER Subatomic particles are the
particles that make up an atom, including protons, neutrons, and electrons.
,8. Levels of organization - ANSWER The hierarchical structure of biological
organization, ranging from chemical to organism.
9. Characteristics of life - ANSWER The essential features that define living
organisms: organization, metabolism, responsiveness, growth/development,
reproduction, and waste disposal.
10.Homeostasis - ANSWER The maintenance of stable internal conditions in
an organism despite external changes.
11.Negative feedback - ANSWER A control mechanism that counteracts
deviation from a set point, involving three components: sensor, control
center, and effector.
12.What is happening during the LAG phase of the growth cycle? - ANSWER
retooling for new environment change in gene expression and the number of
cells don't change
13.What is happening during the LOG (exponential) phase of the growth cycle?
- ANSWER maximum growth rate and increase in number
14.What is happening during the stationary phase of the growth cycle? -
ANSWER max population because there are a lot of cells and a decrease in
nutrients, where cell death and cell divisions are equal
15.What is happening during the death phase of the growth cycle? - ANSWER
there is a decrease in population because there are more cells death than cell
divisions because there is no nutrients
, 16.When do endospores happen? - ANSWER between the lag and log phase
because formation, conjugation and mxyospres form
17.When would an antibiotic be most effective? - ANSWER between the
LAG/LOG phase becuase cell walls are being formed
18.Electrolytes - ANSWER Ionic compounds that dissociate into ions in
solution, conducting electricity.
19.Dissociation - ANSWER The process by which ionic compounds separate
into their constituent ions in solution.
20.What is an antiseptic? - ANSWER chemical or agent that kills or inhibits
growth of microorganisms on living skin or tissue (external- mouth, skin)
21.What is an antimicrobial (chemotherapeutic)? - ANSWER chemical used to
treat microbial disease, kills or inhibits growth of pathogens but it may
disrupt normal flora,
applied to living skin or tissue but is generally taken internally, specific target
site on microbial cell so it has selective toxicity
22.What are the basic characteristics of life? - ANSWER The basic
characteristics of life include organization, metabolism, responsiveness,
movement, development, reproduction, and adaptation.
23.Positive feedback - ANSWER A process that amplifies a deviation from the
norm, not involved in homeostasis.
