SCIE1020 Human Biology Mock Exam Practice Questions and
Answers
Section 1/3 50 Marks total
Section 1: Multiple Choice Questions
Select the most appropriate answer for each of the following questions.
Question 1 2 marks
Which protein is the primary component of the thick filaments found within muscle fibers?
⃝ A Actin
⃝ B Troponin
√
C Myosin
⃝ D Tropomyosin
Model answer:
Myosin is the specific protein that composes the thick filaments of the sarcomere, characterized by its head
and tail regions that interact with actin.
Question 2 2 marks
Which autosomal dominant disorder is clinically characterized by the presence of short arms and legs?
⃝ A Marfan syndrome
√
B Achondroplasia
⃝ C Phenylketonuria
⃝ D Cystic fibrosis
Model answer:
Achondroplasia is an autosomal dominant condition that affects bone growth, resulting in significantly shorter
limbs.
,Question 3 2 marks
Which sexually transmitted infection (STI) is known to have at least 14 oncogenic strains associated with cervical
cancer?
⃝ A Syphilis
⃝ B Trichomoniasis
⃝ C Gonorrhea
√
D Human papillomavirus (HPV)
Model answer:
Human papillomavirus (HPV) is the primary viral cause of cervical cancer through its oncogenic strains.
Question 4 2 marks
In the context of Central Nervous System health, which of the following is considered a common symptom of
schizophrenia?
⃝ A Seizures
√
B Auditory hallucinations
⃝ C Loss of sensation
⃝ D Repetitive motor behaviors
Model answer:
Auditory hallucinations are a hallmark psychological symptom associated with schizophrenia.
, Question 5 2 marks
What type of tumor is characterized by remaining within the boundary of the original tissue without invading
surrounding tissues?
⃝ A Malignant tumor
⃝ B Metastatic tumor
√
C Benign tumor
⃝ D Invasive tumor
Model answer:
Benign tumors do not spread or invade adjacent tissues, unlike malignant or metastatic tumors.
Question 6 2 marks
What physiological event leads to the development of motion sickness?
⃝ A Viral infection of the inner ear
⃝ B Blockages in the eustachian tubes
√
C Overstimulation of hair cells in the ear
⃝ D Genetic predisposition to balance loss
Model answer:
Motion sickness occurs when the hair cells in the vestibular system are overstimulated, disrupting the brain’s
sense of balance.
Answers
Section 1/3 50 Marks total
Section 1: Multiple Choice Questions
Select the most appropriate answer for each of the following questions.
Question 1 2 marks
Which protein is the primary component of the thick filaments found within muscle fibers?
⃝ A Actin
⃝ B Troponin
√
C Myosin
⃝ D Tropomyosin
Model answer:
Myosin is the specific protein that composes the thick filaments of the sarcomere, characterized by its head
and tail regions that interact with actin.
Question 2 2 marks
Which autosomal dominant disorder is clinically characterized by the presence of short arms and legs?
⃝ A Marfan syndrome
√
B Achondroplasia
⃝ C Phenylketonuria
⃝ D Cystic fibrosis
Model answer:
Achondroplasia is an autosomal dominant condition that affects bone growth, resulting in significantly shorter
limbs.
,Question 3 2 marks
Which sexually transmitted infection (STI) is known to have at least 14 oncogenic strains associated with cervical
cancer?
⃝ A Syphilis
⃝ B Trichomoniasis
⃝ C Gonorrhea
√
D Human papillomavirus (HPV)
Model answer:
Human papillomavirus (HPV) is the primary viral cause of cervical cancer through its oncogenic strains.
Question 4 2 marks
In the context of Central Nervous System health, which of the following is considered a common symptom of
schizophrenia?
⃝ A Seizures
√
B Auditory hallucinations
⃝ C Loss of sensation
⃝ D Repetitive motor behaviors
Model answer:
Auditory hallucinations are a hallmark psychological symptom associated with schizophrenia.
, Question 5 2 marks
What type of tumor is characterized by remaining within the boundary of the original tissue without invading
surrounding tissues?
⃝ A Malignant tumor
⃝ B Metastatic tumor
√
C Benign tumor
⃝ D Invasive tumor
Model answer:
Benign tumors do not spread or invade adjacent tissues, unlike malignant or metastatic tumors.
Question 6 2 marks
What physiological event leads to the development of motion sickness?
⃝ A Viral infection of the inner ear
⃝ B Blockages in the eustachian tubes
√
C Overstimulation of hair cells in the ear
⃝ D Genetic predisposition to balance loss
Model answer:
Motion sickness occurs when the hair cells in the vestibular system are overstimulated, disrupting the brain’s
sense of balance.
