A. A smooth muscle
B. A cardiac muscle
C. A skeletal muscle.
D. All of these
Related Mcqs:
- Which of the following statements is incorrect about skeletal muscle fibers?
A. They are multinucleated.
B. They are 10 – 100 ?m in diameter & surrounded by sarcolemma
C. They contain O2 storing molecules called hemoglobin.
D. Their cytoplasm contains high concentration of carbohydrates - Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.
A. Binding sites of actin get attached to the myosin head.
B. Troponin uncovers the actin binding sites.
C. Tropomyosin gets removed from the binding sites of actin filaments.
D. Ca2+ goes back inside sarcoplasmic reticulum. - A smallest contractile unit of muscle contraction called sarcomere is the area between two:
A. H- zone
B. M- Line
C. Z- Line
D. A band - In an annelids, the contraction of circular muscle results in___________?
A. Lengthening of the body.
B. Shortening of the body.
C. Widening of body
D. Thinning of body - What happens during muscle contraction to the length of each myosin and action filament?
A. Z- lines get closer
B. A band becomes short
C. 1 band elongates
D. There is no change in sarcomere - Fibers of the extracellular matrix is the characteristics of_______________?
A. Plant cell wall
B. Bacterial cell wall
C. Cell membrane of bacteria
D. Fluid mosaic model of cell membrane - Collagen fibers of bone are hardened by deposition of_____________?
A. Ca & PO4
B. CaCO3
C. CaSO4
D. SiO2 - The only promoter of leaf senescence in the following plant hormones is________________?
A. Gibberellins
B. Cytokinins
C. Auxins
D. Abscisic Acid - The one which causes contraction of wall of the uterus during and after birth?
A. ADH
B. MSH
C. Oxytocin
D. Progesterone - Stress indicating hormones are____________?
A. Cortisol
B. Adrenaline
C. ACTH
D. All of theseSubmitted by: Muhammad Jamlish Roy
