Multiple Choice
Which of the following cell types is classified as a leukocyte involved in the immune response?
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10. Cell Signaling
Introduction to Cell Signaling
Multiple Choice
The cells of multicellular organisms use a variety of molecules as signals which are
A
Amino acids and proteins.
B
Nucleotides and lipids.
C
Dissolved gases like nitric oxide.
D
Only a and b.
E
a, b, and c.
Verified step by step guidance1
Understand that cells in multicellular organisms communicate using signaling molecules, which can be diverse in nature.
Recognize that amino acids and proteins are common signaling molecules. Proteins can act as hormones or receptors, while amino acids can be neurotransmitters.
Acknowledge that nucleotides and lipids also serve as signaling molecules. Nucleotides like ATP can act as signaling molecules, and lipids can be involved in signaling pathways such as those involving phospholipids.
Consider that dissolved gases like nitric oxide (NO) are also used as signaling molecules. NO can diffuse across membranes and affect cellular functions, such as vasodilation in blood vessels.
Conclude that all the options (a, b, and c) are correct, as they all represent different types of signaling molecules used by cells in multicellular organisms.
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