ThatQuiz Test Library Take this test now
1ST_QUARTER_MARCIANO_SCI9
Contributed by: Marciano
  • 1. The dome-shaped muscle responsible for breathing is called:
A) Diaphragm
B) Trachea
C) Valve
D) Bronchi
  • 2. Blood vessels that carry blood away from the heart are called:
A) Arteries
B) Veins
C) Capillaries
D) Venules
  • 3. The smallest blood vessels where exchange of gases occurs are:
A) Veins
B) Venules
C) Capillaries
D) Arteries
  • 4. The voice box is scientifically called:
A) Trachea
B) Alveoli
C) Pharynx
D) Larynx
  • 5. The respiratory system supplies oxygen and removes:
A) Water
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
  • 6. The windpipe is also known as:
A) Bronchus
B) Trachea
C) Esophagus
D) Alveoli
  • 7. The fluid component of blood is:
A) Oxygen
B) Hemoglobin
C) Platelets
D) Plasma
  • 8. Which is the correct order of airflow during inhalation?
A) Nose → Pharynx → Esophagus → Alveoli
B) Nose → Bronchi → Trachea → Alveoli
C) Nose → Alveoli → Bronchi → Trachea
D) Nose → Trachea → Bronchi → Alveoli
  • 9. What is the main function of white blood cells?
A) Carry oxygen
B) Clot blood
C) Defend against infection
D) Transport nutrients
  • 10. Which organ pumps blood throughout the body?
A) Lungs
B) Kidney
C) Brain
D) Heart
  • 11. Which lifestyle factor MOST increases the risk of lung cancer?
A) Healthy diet
B) Exercise
C) Smoking
D) Sleeping early
  • 12. What happens to the heart rate during regular exercise?
A) Becomes more efficient
B) Stays the same
C) Decreases efficiency
D) Increases permanently
  • 13. Which factor lowers the risk of cardiovascular disease?
A) Smoking
B) Regular physical activity
C) Sedentary lifestyle
D) High-salt diet
  • 14. Which inheritance shows blending of traits?
A) Incomplete dominance
B) Multiple alleles
C) Sex-linked
D) Codominance
  • 15. In codominance, what happens to the traits of both parents?
A) One is hidden
B) Both are expressed
C) Only recessive is expressed
  • 16. A pink flower from red and white parents shows:
A) Incomplete dominance
B) Codominance
C) Polygenic
D) Multiple alleles
  • 17. Which alleles control human blood type?
A) H, h
B) T, t
C) A, B, O
D) X, Y
  • 18. Baldness in males is an example of:
A) Incomplete dominance
B) Codominance
C) Sex-influenced trait
D) Polygenic
  • 19. Which condition results from having an extra chromosome 21?
A) Down syndrome
B) Klinefelter’s syndrome
C) Hemophilia
D) Turner’s syndrome
  • 20. If a red cow and white cow produce a roan calf, the inheritance pattern is:
A) Codominance
B) Incomplete dominance
C) Multiple alleles
D) Polygenic
  • 21. Which is NOT an example of non-Mendelian inheritance?
A) Codominance
B) Incomplete dominance
C) Simple dominance
  • 22. Which inheritance pattern involves genes located on sex chromosomes?
A) Codominance
B) Sex-linked
C) Polygenic
D) Multiple alleles
  • 23. If a person has genotype IAi, his blood type is:
A) Type OA
B) Type AB
C) Type O
D) Type A
  • 24. What is the chronic respiratory condition that causes difficulty in breathing due
    to inflammation of the airways?
A) Emphysema
B) Pneumonia
C) Asthma
D) Bronchitis
  • 25. Which organ system delivers oxygen and nutrients to body tissues?
A) Excretory System
B) Digestive System
C) Nervous System
D) Circulatory system
  • 26. What separates the chest cavity from the abdominal cavity and aids breathing?
A) Larynx
B) Diaphragm
C) Epiglottis
D) Ribcage
  • 27. Which part of the respiratory system warms, moistens, and filters the air?
A) Trachea
B) Alveoli
C) Bronchi
D) Nose
  • 28. Lack of physical activity may lead to:
A) Stronger heart
B) Obesity and hypertension
C) Better lung function
D) Healthy arteries
  • 29. Which type of inheritance allows for more than two possible alleles for a trait?
A) Incomplete dominance
B) Codominance
C) Polygenic inheritance
D) Multiple alleles
  • 30. Which blood type shows codominance of A and B alleles?
A) Type O
B) Type A
C) Type AB
D) Type B
  • 31. Which chromosome pair determines the sex of humans?
A) Chromosome 21
B) Hemoglobin pair
C) 1–22 autosomes
D) X and Y chromosomes
  • 32. The main function of the respiratory system is:
A) Breaking down food
B) Pumping blood
C) Exchanging gases
D) Sending signals
  • 33. The circulatory system is also known as the:
A) Digestive system
B) Skeletal system
C) Cardiovascular system
D) Lymphatic system
  • 34. Which blood vessel carries blood back to the heart?
A) Arteries
B) Veins
C) Bronchi
D) Capillaries
  • 35. Which part of the blood fights infection?
A) Plasma
B) White blood cells
C) Platelets
D) Red blood cells
  • 36. A runner takes deep breaths after a sprint. Which system primarily helps restore balance?
A) Respiratory system
B) Endocrine System
C) Circulatory System
D) Nervous System
  • 37. A person with asthma attacks should avoid:
A) Drinking water
B) Fresh air
C) Exercise
D) Dust and smoke
  • 38. Which situation demonstrates codominance?
A) Brown-eyed and blue-eyed parents producing green-eyed children
B) A black chicken and white chicken produce speckled offspring
C) A white flower and red flower produce pink flowers
D) Tall and short parents producing medium offspring
  • 39. If a father is color-blind and the mother is a carrier, their son has what probability of being color-blind?
A) 100%
B) 75%
C) 50%
D) 25%
  • 40. Which lifestyle change will most improve circulatory health?
A) Increase salt intake
B) Quit smoking
C) Eat processed foods
D) Avoid fruits
  • 41. A student notes that his pulse rate increases after jogging. What explains this?
A) The nervous system shuts down
B) The body needs more oxygen
C) The lungs collapse
D) Blood volume decreases
  • 42. Which best explains why multiple alleles traits vary widely in a population?
A) They are sex-linked
B) They involve many genes
C) They skip generations
D) They are caused by environment alone
  • 43. Which situation best shows incomplete dominance?
A) A red cow and white cow produce a roan calf
B) A black chicken and white chicken produce only black offspring
C) A tall and short plant produce a tall plant
D) A red flower and white flower produce pink offspring
  • 44. Why does the body increase breathing rate during exercise?
A) To prevent sweating
B) To increase bone growth
C) To release more carbon dioxide
D) To store more oxygen in stomach
  • 45. A farmer crossbreeds a red flower (RR) and white flower (WW). The offspring are all pink (RW). Which inheritance is this?
A) Polygenic inheritance
B) Simple dominance
C) Codominance
D) Incomplete dominance
  • 46. Which school activity BEST integrates knowledge of non-Mendelian inheritance?
A) Painting random pictures
B) Ignoring genetics in biology class
C) Playing unrelated video games
D) Designing Punnett squares for codominance and incomplete dominance
  • 47. A city wants to lower rates of respiratory disease. Which program is BEST?
A) Encourage longer screen time for students
B) Increase the price of healthy food
C) Build more gyms and promote fitness
D) Reduce air pollution and enforce anti-smoking laws
  • 48. If tasked to evaluate the risks of poor diet, which statement is MOST accurate?
A) Poor diet has no effect if you are young
B) Poor diet only affects appearance, not health
C) Poor diet may lead to obesity, heart disease, and diabetes
D) Poor diet improves lung function
  • 49. Which conclusion is most accurate about lifestyle diseases?
A) They can be prevented by healthy habits
B) They cannot be prevented
C) They are caused only by pollution
D) They are always inherited
  • 50. A student is designing a campaign to prevent respiratory illnesses. Which slogan is most effective?
A) “Ignore Your Health”
B) “Say No to Smoking, Say Yes to Breathing Free!”
C) “Eat Fast Food Now!”
D) “Stay Awake All Night!”
Created with That Quiz — the site for test creation and grading in math and other subjects.