MCQs4All - Biology Collection

Biology MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed of past papers

Question. The contraction of which of the following muscle fibers, is controlled by hormones?
  1. A smooth muscle
  2. A cardiac muscle
  3. A skeletal muscle.
  4. All of these
Question. Rapid growth at exponential ration occurs in which phase of bacterial growth:
  1. Lag phase
  2. Log phase
  3. Stationary phase
  4. Death / decline phase
Question. Ribosomes are tiny Granules first studied in 1955 by__________?
  1. De-Duve
  2. Schwann
  3. August Weismann
  4. Palade
Question. Each turn of DNA contain ____________ nitrogenous base pairs?
  1. 5
  2. 10
  3. 20
  4. 25
Question. The characteristic which enable animals to tolerate dehydration is called__________?
  1. Osmoconformation
  2. Osmoregulaton
  3. Anhydrobiosis
  4. Anhydrosis
Question. The skeleton of sponges is made up of___________?
  1. Calcium
  2. Silica
  3. Both of these
  4. None of these
Question. Which of the following statement about osteoporosis is incorrect.
  1. It results from estrogen deficiency.
  2. Bone eating process takes over bone formation process.
  3. There is reduction of bone mass and change in chemical composition of the matrix
  4. It is common in old age.
Question. Which disease has been totally eradicated from the world because of effective vaccination?
  1. Measles
  2. Polio
  3. Small pox
  4. Hepatitis
Question. Which of the following openings have cilia?
  1. Nephrostome
  2. Nephridiopore
  3. Both of these
  4. None of these
Question. ___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules?
  1. Osmotic
  2. Pressure
  3. Both of these
  4. None of these
Question. The skeleton of the sponges is in the form of variously shaped needle like structures called___________?
  1. Stripules
  2. Spicules
  3. Brails
  4. Spines
Question. The greatest diversity of animals in the lake is found in which one of the following zones?
  1. Limmnetic zone
  2. Littoral zone
  3. Profundal zone
  4. None of these
Question. Which one is soluble in hot water_____________?
  1. Starch
  2. Glycogen
  3. Amylose
  4. Amylopectin.