HCR 240 FINAL EXAM AND STUDY GUIDE NEWEST 2026
TEST BANK| COMPLETE 650 REAL EXAM QUESTIONS AND
CORRECT VERIFIED ANSWERS/ ALREADY GRADED A+|
HCR 240 FINAL EXAM PREP (MOST RECENT!!)
What happens during hypoxic injury? ......ANSWER......Low oxygen
prevents mitochondria from making enough ATP, leading to cell swelling
and potential cell death.
What is free radical injury? ......ANSWER......Damage caused by reactive
oxygen species to cell membranes, proteins, and DNA, often due to
inflammation or toxic exposure.
What types of substances can cause chemical injury to cells?
......ANSWER......Drugs, alcohol, poisons, and toxins can directly damage
cells or be metabolized into toxic byproducts.
How can infectious injury affect cells? ......ANSWER......Viruses, bacteria,
fungi, and parasites can damage cells directly or trigger immune
inflammation.
What is immunologic injury? ......ANSWER......Damage to host tissue
caused by the immune system, as seen in autoimmune diseases or
hypersensitivity reactions.
pg. 1
,What is necrosis? ......ANSWER......Uncontrolled cell death that causes
inflammation.
What characterizes coagulative necrosis? ......ANSWER......Tissue
architecture remains firm for a time, commonly seen in heart and
kidney infarcts.
What is liquefactive necrosis? ......ANSWER......Dead tissue becomes
liquid, often seen in brain infarcts and bacterial infections with pus.
What is caseous necrosis? ......ANSWER......Soft, cheese-like necrosis,
typically associated with tuberculosis.
What causes fat necrosis? ......ANSWER......Destruction of fat tissue,
often due to pancreatitis or trauma.
What is gangrenous necrosis? ......ANSWER......Necrosis that usually
affects extremities, with dry gangrene due to ischemia and wet
gangrene involving infection.
What is hyponatremia? ......ANSWER......Low sodium levels often caused
by excess water or sodium loss, leading to cerebral edema.
pg. 2
,What are the symptoms of hypernatremia? ......ANSWER......Symptoms
include thirst, dry mucous membranes, confusion, seizures, and coma
due to cellular dehydration.
What is hypokalemia? ......ANSWER......Low potassium levels that can
cause muscle weakness, cramps, ileus, and cardiac dysrhythmias.
What can cause hyperkalemia? ......ANSWER......High potassium levels
often due to kidney failure, acidosis, tissue damage, or potassium-
sparing drugs.
What is the normal pH range for blood? ......ANSWER......The normal pH
range is about 7.35 to 7.45.
What causes respiratory acidosis? ......ANSWER......Hypoventilation
leads to CO2 retention, causing a drop in pH.
What is metabolic acidosis? ......ANSWER......A condition where
bicarbonate is low or acid is high, often caused by DKA, renal failure, or
diarrhea.
What is the difference between transcription and translation?
......ANSWER......Transcription is the process of copying DNA into mRNA,
while translation is the process of reading mRNA to build proteins.
pg. 3
, What is a Punnett square used for? ......ANSWER......To predict the
probability of offspring genotypes.
What is Turner syndrome? ......ANSWER......A condition usually
characterized by a missing X chromosome in females, leading to short
stature and infertility.
What are the clinical manifestations of Klinefelter syndrome?
......ANSWER......Small testes, infertility, reduced testosterone,
gynecomastia, and tall stature in males.
What are the benefits of inflammation? ......ANSWER......Inflammation
protects the body by bringing immune cells to the injured area,
destroying pathogens, and starting repair.
What are the phases of wound healing? ......ANSWER......Hemostasis,
inflammation, proliferation, and remodeling.
What is active immunity? ......ANSWER......Immunity where the body
produces its own antibodies, providing long-term memory.
What is passive immunity? ......ANSWER......Immunity where antibodies
are given from another source, providing immediate but short-term
protection.
pg. 4
TEST BANK| COMPLETE 650 REAL EXAM QUESTIONS AND
CORRECT VERIFIED ANSWERS/ ALREADY GRADED A+|
HCR 240 FINAL EXAM PREP (MOST RECENT!!)
What happens during hypoxic injury? ......ANSWER......Low oxygen
prevents mitochondria from making enough ATP, leading to cell swelling
and potential cell death.
What is free radical injury? ......ANSWER......Damage caused by reactive
oxygen species to cell membranes, proteins, and DNA, often due to
inflammation or toxic exposure.
What types of substances can cause chemical injury to cells?
......ANSWER......Drugs, alcohol, poisons, and toxins can directly damage
cells or be metabolized into toxic byproducts.
How can infectious injury affect cells? ......ANSWER......Viruses, bacteria,
fungi, and parasites can damage cells directly or trigger immune
inflammation.
What is immunologic injury? ......ANSWER......Damage to host tissue
caused by the immune system, as seen in autoimmune diseases or
hypersensitivity reactions.
pg. 1
,What is necrosis? ......ANSWER......Uncontrolled cell death that causes
inflammation.
What characterizes coagulative necrosis? ......ANSWER......Tissue
architecture remains firm for a time, commonly seen in heart and
kidney infarcts.
What is liquefactive necrosis? ......ANSWER......Dead tissue becomes
liquid, often seen in brain infarcts and bacterial infections with pus.
What is caseous necrosis? ......ANSWER......Soft, cheese-like necrosis,
typically associated with tuberculosis.
What causes fat necrosis? ......ANSWER......Destruction of fat tissue,
often due to pancreatitis or trauma.
What is gangrenous necrosis? ......ANSWER......Necrosis that usually
affects extremities, with dry gangrene due to ischemia and wet
gangrene involving infection.
What is hyponatremia? ......ANSWER......Low sodium levels often caused
by excess water or sodium loss, leading to cerebral edema.
pg. 2
,What are the symptoms of hypernatremia? ......ANSWER......Symptoms
include thirst, dry mucous membranes, confusion, seizures, and coma
due to cellular dehydration.
What is hypokalemia? ......ANSWER......Low potassium levels that can
cause muscle weakness, cramps, ileus, and cardiac dysrhythmias.
What can cause hyperkalemia? ......ANSWER......High potassium levels
often due to kidney failure, acidosis, tissue damage, or potassium-
sparing drugs.
What is the normal pH range for blood? ......ANSWER......The normal pH
range is about 7.35 to 7.45.
What causes respiratory acidosis? ......ANSWER......Hypoventilation
leads to CO2 retention, causing a drop in pH.
What is metabolic acidosis? ......ANSWER......A condition where
bicarbonate is low or acid is high, often caused by DKA, renal failure, or
diarrhea.
What is the difference between transcription and translation?
......ANSWER......Transcription is the process of copying DNA into mRNA,
while translation is the process of reading mRNA to build proteins.
pg. 3
, What is a Punnett square used for? ......ANSWER......To predict the
probability of offspring genotypes.
What is Turner syndrome? ......ANSWER......A condition usually
characterized by a missing X chromosome in females, leading to short
stature and infertility.
What are the clinical manifestations of Klinefelter syndrome?
......ANSWER......Small testes, infertility, reduced testosterone,
gynecomastia, and tall stature in males.
What are the benefits of inflammation? ......ANSWER......Inflammation
protects the body by bringing immune cells to the injured area,
destroying pathogens, and starting repair.
What are the phases of wound healing? ......ANSWER......Hemostasis,
inflammation, proliferation, and remodeling.
What is active immunity? ......ANSWER......Immunity where the body
produces its own antibodies, providing long-term memory.
What is passive immunity? ......ANSWER......Immunity where antibodies
are given from another source, providing immediate but short-term
protection.
pg. 4
