If Gastrulation Was Blocked by an Environmental Toxin, Then

question 32

Multiple Choice

If gastrulation was blocked by an environmental toxin, then

• A) cleavage would not occur in the zygote.
• B) embryonic germ layers would not form.
• C) fertilization would be blocked.
• D) the blastula would not be formed.
• E) the blastopore would form above the gray crescent in the animal pole.

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Definitions:

Oxygen

A chemical element (O) essential for aerobic respiration in living organisms and accounting for about 21% of Earth's atmosphere.

NADH Reductase

An enzyme involved in the electron transport chain that helps in the transfer of electrons from NADH to other molecules.

Hydrogen Ions

Positively charged ions (H+) that play a significant role in chemical reactions, pH balance, and cellular processes.

Electron

Negative subatomic particle, moving about in an energy level around the nucleus of an atom.