Tag: muscles

Quizzes (1) Questions (39)

Questions Related to muscles

Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

Muscles contain a red coloured oxygen storing pigment called _______________.

  1. Haemoglobin

  2. Myoglobin

  3. Erythrocruorin

  4. Haemolymph
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Myoglobin is an iron- and oxygen-binding protein found in the muscle tissue of vertebrates in general and in almost all mammals. 
  • It is distantly related to haemoglobin which is the iron- and oxygen-binding protein in blood, specifically in the red blood cells. Hence, Muscles contain a red coloured oxygen-storing pigment called myoglobin.
So, the correct answer is 'myoglobin'.

Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

Muscle contains a red coloured oxygen containing pigment called

  1. Rhodopsin

  2. Myoglobin

  3. Hemocyanin

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Muscle contains a red coloured oxygen-containing pigment called myoglobin. It is similar to hemoglobin pigment that stores oxygen in the blood cells. Myoglobin binds oxygen with its heme group.

Thus, the correct answer is 'Myoglobin.'

Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

Match the following and find correct combination.

$(a)$ Abrin $(i)$ Lectin
$(b)$ GLUT-4 $(ii)$ Intercellular growth substance
$(c)$ Collagen $(iii)$ Hormone
$(d)$ Concanavalin $(iv)$ Enables glucose transport into cells
$(v)$ Toxin
  1. $a - iii, b - iv, c - ii, d - i$
  2. $a - v, b - iv, c - ii, d - i$
  3. $a - iii, b - iv, c - ii, d - v$
  4. $a - iii, b - v, c - ii, d - i$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Abrin is a highly toxalbumin found in the seeds of rosary pea.
Concanavalin A is a lectin extracted from jack bean,  and used to purify glycosylated molecules in lectin. 
Collagenis a intracellular growth substance. 
GLUT 4 is the insulin regulated glucose transporter found in the adipose tissues. 
So the correct answer is B.
Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

In muscle fibres, the endoplasmic reticulum.

  1. Is known as sarcoplasmic reticulum

  2. Is poorly developed

  3. Is irregularly shaped

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  1. sarcoplasmic reticulum is a specialized type of smooth ER that regulates the calcium ion concentration in the cytoplasm of striated muscle cells. 
  3. sarcoplasmic reticulum  is a membrane-bound structure found within muscle is also known as endoplasmic reticulum of muscle. so option A is correct answer .
Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

Sarcomere is the functional unit of

  1. Contraction

  2. Relaxation

  3. Contraction and relaxation

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The ‘A’ and ‘I’ bands are arranged alternately throughout the length of the myofibrils.
  • In the centre of each ‘I’ band, there is an elastic fibre called ‘Z’ line which bisects it. The thin filaments are firmly attached to the ‘Z’ line. 
  • The portion of the myofibril between two successive ‘Z’ lines is considered as the functional unit of contraction and is called sarcomere.
  • Hence Sarcomere is the unit of contraction.
Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

Total number of muscles in human body comes in the range of

  1. 440-550

  2. 640-850

  3. 1150-1500

  4. More than 2000
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Muscle is a  bundle of fibrous tissue in a body that has the ability to contract, producing movement in or maintaining the position of parts of the body.
  • The total number of muscles in the human body comes in the range of 640-850.
  • So,the correct answer is '640-850'
Multiple choice biology movement in animals types of muscles muscles muscles and their structure muscle contraction

Condition of having a number of nuclei in a muscle fibre is

  1. Polykaryon

  2. Coenocytic

  3. Syncytial

  4. Endoduplication
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  •  Syncytial or syncytium is a multinucleated cell that can result from multiple cell fusions of uninuclear cells (i.e., cells with a single nucleus), which can result from multiple nuclear divisions without accompanying cytokinesis. 
  • Syncytial is also referring to cells interconnected by the specialized membrane with gap junctions, as seen in the heart muscle cells and certain smooth muscle cells, which are synchronized electrically in an action potential. Hence, Condition of having a number of nuclei in a muscle fibre is syncytial.
So, the correct answer is 'syncytial'.

Multiple choice zoology skeleton - movement and locomotion types of muscles muscles muscles and their structure

Which of the following is the property of cardiac muscle?

  1. It is involuntary muscles.

  2. It is resistant to fatigue.

  3. It is striated muscle.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Cardiac muscle is specialized tissue that is found only in the heart.
  •  It has characteristics similar to both smooth and skeletal muscle tissue, as well as specialized properties, that allow it to function with fast but sustained contractions, rapid conduction and coordinated movement. Hence,  the property of cardiac muscle is involuntary muscles, resistant to fatigue and striated muscle.
So, the correct answer is 'all the above'.

Multiple choice zoology skeleton - movement and locomotion types of muscles muscles muscles and their structure

Cardiac muscles are resistant to fatigue.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Normal muscles like the skeletal muscles get fatigued (strenuous activities like exercise, sports etc.) due to the formation of lactic acid as a result of anaerobic glycolysis. But cardiac muscles do not form lactic acid due to the presence of rich capillary network which provides enough oxygen to the muscles. Anaerobic processes never occur in cardiac muscles, hence lactic acid is never formed enabling heart muscles to perform their function without fatigue.
Therefore, the statement that cardiac muscles are fatigue resistant is true.