Tag: muscle contraction

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Multiple choice biology locomotion and movement locomotion in animals bones and movements muscle contraction types of muscles muscles

Organ of Golgi is the sensing structure formed at the junction of

  1. Two nerves

  2. Two bones

  3. Nerve and muscle

  4. Muscle and tendon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Organ of Golgi. also known as Golgi tendon organ is a kind of proprioreceptor that sense stimulus within the body. It receives information from the tendons and sense tension in muscles. These kind of receptors get activated when the muscles stretch or contract due to any activity. These receptor are made up of collagen strands and formed at the junction of muscle and tendon.
So, the correct answer is 'Muscle and tendon'.
Multiple choice biology locomotion and movement locomotion in animals bones and movements muscle contraction types of muscles muscles

During strenuous muscular activity, hydrogens removed from sugar molecules are accepted temporarily by .......... to form..........        

  1. oxygen; water

  2. pyruvate; lactic acid

  3. myoglobin; carbaminohaemoglobin

  4. oxygen; carbon dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During the strenuous muscular activity, hydrogens removed from sugar molecules are accepted temporarily by pyruvate to form lactic acid.

So, the correct option is 'pyruvate; lactic acid'.

Multiple choice biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

The term "innominate" is used for?

  1. A bone and an artery

  2. A bone and a vein

  3. A bone and a nerve

  4. A vein and a nerve
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The term innominate means unnamed or anonymous. It is often used to refer to certain anatomical structures that have a descriptive name rather than precise ones. In humans this termed is used to refer to the hip bone and brachiocephalic artery.
Hence, the correct answer is 'A bone and an artery'.

Multiple choice biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

An example of chitinous exoskeleton is

  1. Oriole

  2. Sea stars

  3. Clam

  4. Honeybee

  5. Earthworm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • A tough, semitransparent substance that is the main component of the exoskeletons of arthropods, such as the shells of crustaceans and the outer coverings of insects(honey bee). 
  • Chitin is also found in the cell walls of certain fungi and algae. Chemically, it is a nitrogenous polysaccharide (a carbohydrate). Hence, An example of a chitinous exoskeleton is Honeybee.
So, the correct answer is 'Honeybee'.

Multiple choice biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

Cockroaches have an outer skeleton.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
An exoskeleton is the external skeleton that supports and protects an animal's body. Examples of animals with exoskeletons include insects such as grasshoppers and cockroaches, and crustaceans such as crabs and lobsters.
Cockroaches are winged insects found in nearly every part of the world. Like most other insects, cockroaches have an exoskeleton, meaning their skeleton is located on the outside of their bodies. They have three simple body parts: the head, thorax, and abdomen.
Hence, the answer is true.