What Does Light Absorption Trigger During Phototaxis

question 24

Multiple Choice

What does light absorption trigger during phototaxis?

• A) rapid changes in the concentrations of ions, including potassium and oxygen
• B) rapid changes in the concentrations of ions, including sodium and oxygen
• C) rapid changes in the concentrations of ions, including sodium and calcium
• D) rapid changes in the concentrations of ions, including potassium and calcium

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Definitions:

Duodenum

First division of the small intestine; connects to the stomach.

Anterior Pituitary

The front portion of the pituitary gland that secretes hormones affecting growth, metabolism, and reproductive functions.

Adrenal Glands

Endocrine glands located above the kidneys that produce hormones such as adrenaline and cortisol, involved in stress responses.

Pancreas

A glandular organ in the digestive system and endocrine system which secretes digestive enzymes and hormones such as insulin.