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stiv31 [10]
4 years ago
11

Normal leukocytes use several protective mechanisms in combating disease-causing microbes such as bacteria. Which of the followi

ng is NOT a method related to substance uptake by a white blood cell? a. phagocytosis b. exocytosis c. receptor-mediated d. endocytosis e. pinocytosis
Biology
1 answer:
Anna11 [10]4 years ago
7 0

Answer:b; exocytosis

Explanation: leukocytes are amoeboid white blood cells, which are involved in immune response .such response included combating foreign bodies like micro organisms which invade the body.they do this by engulfing the micro organisms and digesting them.

Phagocytosis, pinocytosis, receptor mediated endocytosis are the ways in which the cells engulfs the Invaders.

In endocytosis,the membrane of the cell traps the organism by forming an invagination.it then encloses the micro organism and digests it.

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Damage to sensory receptor cells would most likely result in ________. I. confusion of visual and auditory input II. inaccurate
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Answer:

The correct answer is: None of the above. The accurate answer is: Problem or inability in detecting the sensory information.

Explanation:

  • Sensory receptor cells form the part of the sensory epithelial layer that are present in the form of a lining in all sensory organs.
  • These sensory cells possess some specialised receptor molecules, usually on the surface of the cells, that can sense different types of sensory signals like light, in case of eyes, smell is case of nose, taste in case of tongue and sound in case of ears.
  • Any damage caused to these cells will adversely affect their capability to perceive or receive or detect the sensory signals.
  • Option I is incorrect because sensory cells are not only present in the eyes and ears but also in nose, tongue, skin. The activity of the sensory cells of one organ is independent of the activity of sensory cells of other organs hence, damage to the sensory cells of one organ will not create any confusion in different sensory inputs.
  • Option II is incorrect because integration of all the sensory impulses occur in the brain after the impulse has been received and detected by multiple sensory receptor cells and send to the brain through the sensory neurons.
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List the features of gas exchange surfaces in animals.

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