1
BPK 105 MIDTERM EXAM LATEST VERSION -2025/2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
Organ Systems
-group of organs that is classified as a unit due to their similar function
-Muscular, Nervous, Endocrine, Cardiovascular, Lymphatic, Respiratory, Digestive,
and Urinary Systems
6 Characteristics of Life
1) Organization
2) Metabolism
3) Responsiveness
4) Growth
5) Development
6) Reproduction
Anatomy
-investigates the structure of the body
, 2
-relationship between the structure of a body part and it's function
-can be systemic or regional
Physiology
-deals with the process or functions of living things
Goals:
(1) to understand and foreshadow the body's natural responses to changes
(2) understand how the body controls and maintains their conditions
Homeostasis
Existence and maintenance of a relatively constant environment within the body
despite fluctuations in the external/internal environment; includes temperature,
volume and chemical content
Negative Feedback
Deviation from the set point is made smaller or is resisted; maintains variation
within a normal range without preventing it.
Maintains homeostasis
Three Components:
-Receptor
-Control Centre
, 3
-Effector
Ionic Bonds
Transfer of electrons between atoms; creates oppositely charged ions
Polar Covalent Bonds
Electrons are unequally shared between two atoms; results in a slightly positive
charge on one side of the molecule and a slightly negative charge on the other
side
Nonpolar Covalent Bonds
Equal sharing of electrons between two atoms; has an even distribution of
charges among the molecule
Hydrogen Bonds
Positive end of a polar molecule is attracted to the negative end of another polar
molecule, and vice versa; not a chemical bond and is weaker than ionic/covalent
bonds
Compound
Substance resulting from the chemical combination of 2+ different types of atoms
Dissociation
-Process of ionic compounds dissolving in water causing their ions to separate
from each other
-Positively charged ions are attracted to the negative ends of the water molecule
and vice versa
-Dissociated ions are called electrolytes
Synthesis
, 4
-Anabolism
-Two or more reactants combine to form a larger and more complex product
Decomposition
-Catabolism
-Reactants are broken down into smaller, and less complex products
Exchange reactions
-Reactants are decomposed then resynthesized with its counterparts
Factors That Affect the Rate of Chemical Rxn
1. Reactants
2. Concentration
3. Temperature
4. Catalysts
pH Scale
Indicates the H+ concentration of a solution
Acidity
Greater concentration of H+ greater than OH-, has a pH less than 7.0
Basic/Alkaline
Concentration of OH- greater than H+, has a pH greater than 7.0
Buffer
A chemical used to resist the changes in pH when an acid or a base is added to a
solution that has the buffer in it; binds to the H+/OH- preventing the ions from
causing a shift in the pH
BPK 105 MIDTERM EXAM LATEST VERSION -2025/2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
Organ Systems
-group of organs that is classified as a unit due to their similar function
-Muscular, Nervous, Endocrine, Cardiovascular, Lymphatic, Respiratory, Digestive,
and Urinary Systems
6 Characteristics of Life
1) Organization
2) Metabolism
3) Responsiveness
4) Growth
5) Development
6) Reproduction
Anatomy
-investigates the structure of the body
, 2
-relationship between the structure of a body part and it's function
-can be systemic or regional
Physiology
-deals with the process or functions of living things
Goals:
(1) to understand and foreshadow the body's natural responses to changes
(2) understand how the body controls and maintains their conditions
Homeostasis
Existence and maintenance of a relatively constant environment within the body
despite fluctuations in the external/internal environment; includes temperature,
volume and chemical content
Negative Feedback
Deviation from the set point is made smaller or is resisted; maintains variation
within a normal range without preventing it.
Maintains homeostasis
Three Components:
-Receptor
-Control Centre
, 3
-Effector
Ionic Bonds
Transfer of electrons between atoms; creates oppositely charged ions
Polar Covalent Bonds
Electrons are unequally shared between two atoms; results in a slightly positive
charge on one side of the molecule and a slightly negative charge on the other
side
Nonpolar Covalent Bonds
Equal sharing of electrons between two atoms; has an even distribution of
charges among the molecule
Hydrogen Bonds
Positive end of a polar molecule is attracted to the negative end of another polar
molecule, and vice versa; not a chemical bond and is weaker than ionic/covalent
bonds
Compound
Substance resulting from the chemical combination of 2+ different types of atoms
Dissociation
-Process of ionic compounds dissolving in water causing their ions to separate
from each other
-Positively charged ions are attracted to the negative ends of the water molecule
and vice versa
-Dissociated ions are called electrolytes
Synthesis
, 4
-Anabolism
-Two or more reactants combine to form a larger and more complex product
Decomposition
-Catabolism
-Reactants are broken down into smaller, and less complex products
Exchange reactions
-Reactants are decomposed then resynthesized with its counterparts
Factors That Affect the Rate of Chemical Rxn
1. Reactants
2. Concentration
3. Temperature
4. Catalysts
pH Scale
Indicates the H+ concentration of a solution
Acidity
Greater concentration of H+ greater than OH-, has a pH less than 7.0
Basic/Alkaline
Concentration of OH- greater than H+, has a pH greater than 7.0
Buffer
A chemical used to resist the changes in pH when an acid or a base is added to a
solution that has the buffer in it; binds to the H+/OH- preventing the ions from
causing a shift in the pH
