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AP Biology Unit 8K: Human Organ Systems & Homeostasis — practice questions — page 3

Explore 92 free Unit 8K: Human Organ Systems & Homeostasis questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8K: Human Organ Systems & Homeostasis questions and exercises with answers

Showing questions 61–90 of 92.

Blood pressure of a healthy adult is typically aboutRead the answer and worked solution →Which blood vessel carries deoxygenated blood from the body back to the heart?Read the answer and worked solution →Which blood vessel carries oxygenated blood from the lungs back to the heart?Read the answer and worked solution →The hepatic portal system carries blood from theRead the answer and worked solution →Capillary walls are only one cell thick because theyRead the answer and worked solution →Which white blood cells engulf bacteria by phagocytosis?Read the answer and worked solution →Rh factor is named afterRead the answer and worked solution →Lymph differs from blood because lymphRead the answer and worked solution →Excretion is the process ofRead the answer and worked solution →The main nitrogenous waste in human urine isRead the answer and worked solution →Urea is produced in the human body in theRead the answer and worked solution →The main excretory organ in humans is theRead the answer and worked solution →The structural and functional unit of the kidney is theRead the answer and worked solution →The outer dark region of a kidney is called theRead the answer and worked solution →Inner lighter region of the kidney is called theRead the answer and worked solution →Urine from a kidney is carried to the urinary bladder by theRead the answer and worked solution →Urine from the urinary bladder leaves the body through theRead the answer and worked solution →Ultrafiltration in the kidney takes place in theRead the answer and worked solution →Glomerular filtrate is similar to plasma except that it has noRead the answer and worked solution →In selective reabsorption useful substances such as glucose, amino acids and water areRead the answer and worked solution →Tubular secretion is the active transfer of substances from blood into theRead the answer and worked solution →Which is the correct order of urine production?Read the answer and worked solution →Urine of a healthy person normally does NOT containRead the answer and worked solution →Approximate volume of urine produced by a healthy adult in 24 hours isRead the answer and worked solution →If a kidney fails, the body removes wastes using a process calledRead the answer and worked solution →Blood that enters the kidney through the renal artery isRead the answer and worked solution →The renal vein leaving the kidney carries blood that isRead the answer and worked solution →Skin excretesRead the answer and worked solution →Which organelle has its own DNA?Read the answer and worked solution →Endoplasmic reticulum is of how many types?Read the answer and worked solution →

Worked practice questions

Blood pressure of a healthy adult is typically about

  1. 120/80 mm Hg
  2. 60/40 mm Hg in adults
  3. 200/150 mm Hg in adults
  4. 20/10 mm Hg in adults
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Correct answer: A. 120/80 mm Hg

1. The chapter section on blood pressure gives the normal range. 2. Systolic about 120 mm Hg and diastolic about 80 mm Hg. 3. Hence 120/80 mm Hg is the normal adult reading. 4. So option A is correct. _Source: Selina Concise Biology Class 10, Ch 7 The Circulatory System (Mistral OCR'd PDF), section on blood pressure_

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Which blood vessel carries deoxygenated blood from the body back to the heart?

  1. Pulmonary vein from lungs
  2. Superior and inferior vena cava
  3. Aorta from the heart only
  4. Hepatic artery to liver only
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Correct answer: B. Superior and inferior vena cava

1. Deoxygenated blood from the body returns through the venae cavae. 2. Superior vena cava drains the head and upper body. 3. Inferior vena cava drains the lower body. 4. Both empty into the right atrium. _Source: Selina Concise Biology Class 10, Ch 7 The Circulatory System (Mistral OCR'd PDF), section on main vessels_

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Which blood vessel carries oxygenated blood from the lungs back to the heart?

  1. Aorta from the left ventricle only
  2. Pulmonary artery from the right ventricle
  3. Pulmonary vein into the left atrium
  4. Vena cava into the right atrium only
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Correct answer: C. Pulmonary vein into the left atrium

1. Lungs oxygenate the blood. 2. Oxygenated blood travels via the pulmonary vein. 3. It enters the left atrium of the heart. 4. So option A is correct. _Source: Selina Concise Biology Class 10, Ch 7 The Circulatory System (Mistral OCR'd PDF), section on main vessels_

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