MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
D. Structure, genetics, and ecology of bacteria
Explanation
Structure, genetics, and ecology of bacteria is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Aluminium Oxide
Explanation
Hydrated aluminium oxide is the chemical name of bauxite.
Correct answer
C. Bridge
Explanation
Bridge is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. 12-13%
Explanation
12-13% is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. NH3
Explanation
NH3 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Gregor Mendel
Explanation
Father of Genetics. Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.
Correct answer
A. Bone marrow
Explanation
Bone marrow is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. 639
Explanation
There are around 639 skeletal muscles. The three main types of muscle include skeletal, smooth and cardiac. The brain, nerves and skeletal muscles work together to cause movement – this is collectively known as the neuromuscular system.
Correct answer
B. Stratosphere
Explanation
Stratosphere is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Changes in the Earth’s Magnetic Field
Explanation
magnetometer, instrument for measuring the strength and sometimes the direction of magnetic fields, including those on or near the Earth and in space. Magnetometers are also used to calibrate electromagnets and permanent magnets and to determine the magnetization of materials.