If A is coded as -, B is coded as +, C is coded as × , and D is coded as /, then evaluate 8 A 1 B 11 C 12 D 4 C 5.
Correct answer: D. 172
- A. 173
- B. 174
- C. 182
- D. 172
Explanation
Substituting the operators gives the expression 8 - 1 + 11 × 12 / 4 × 5. Following the order of operations (BODMAS), this evaluates to 8 - 1 + 165 = 172.
Last updated
About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
Practise Homeostasis
698 free Homeostasis MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A biological defense of our body with greater speed and effectiveness is called:
A capillary tuft from which fluid leaves the circulatory system:
A cell is placed in a solution and it swells. This solution is _
A cell is placed in a solution and swells. This solution is:
A cell whose internal salt concentration is 0.3 /liter is placed in a solution having salt concentration 0.5/liter. The solution is _