In Your Textbook, There Is a Discussion of the Experiment

question 90

Multiple Choice

In your textbook, there is a discussion of the experiment by Wigglesworth, which demonstrated that PTTH (prothoracicotropic hormone) triggers molting and the release of ecdysone. In 1984, Nagasawa et al. published a paper titled: "Amino-terminal amino acid sequence of silkworm prothoracicotropic hormone: homology with insulin." The similar amino acid sequence between PTTH and insulin suggests that:

• A)a common ancestral peptide evolved into peptides with different functions in insects and vertebrates.
• B)PTTH must be involved with glucose metabolism in insects.
• C)insulin causes molting in vertebrates.
• D)if PTTH were given to vertebrates, it would likely trigger glucose uptake by cells.

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Definitions:

Unilateral Neglect

A neurological condition in which a person is unaware of one side of their body or environment.

Disturbed Sensory Perception

A condition where an individual has difficulty processing or interpreting sensory information, leading to confusion or disorientation.

Peripheral Vascular Dysfunction

Disorders affecting the blood vessels outside of the heart and brain, potentially leading to reduced blood flow and associated health issues.

Acute Confusion

A sudden onset of disorientation or impaired consciousness, often reflecting an underlying medical, neurological, or psychiatric condition.