During sperm penetration, human eggs are still surrounded by follicular cells.
Therefore, the correct answer is Option D.
<h3>What changes does egg undergo for fertilization?</h3>
- An egg goes through a few changes at the hour of sperm penetration during fertilization.
- These progressions happen at the cell surface, in development, physiology and gene expression.
- For fertilization, a sperm should combine with the cell membrane and afterward infiltrate the egg cells.
- Infiltration through the egg cell or extracellular matrix (ECM) is a troublesome task.
- The acrosome of the egg goes through acrosomal reaction to get through the hard shell of cell.
- To go through the follicle cells encompassing the egg or oocyte, the sperm discharges hyaluronidase enzyme.
- This chemical isn't delivered until the sperm comes into contact with the egg cell's zona pellucida.
Learn more about fertilization here:
brainly.com/question/18117670
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<h3><em>The oxygen can then be released by the plant through its stroma, or sent to the mitochondria for use in cellular respiration. c. Describe the journey of a carbon dioxide molecule in photosynthesis. molecule to another, via electron carriers, is used to synthesize ATP</em>.</h3>
Answer:
it was exactly 3.5 billion years ago
Explanation:
3 days<span>In a harsh environment — it's snowing, say — you have 3 hours to survive without shelter. After 3 days, you need water or you'll perish. You can make it 3 weeks without food, though we promise you that won't be fun. Despite this possibly helpful rule, some people have survived 8 to 10 days without water.</span>
