Which Statement About Frog Eggs Is True

question 17

Multiple Choice

Which statement about frog eggs is true?

• A) Sperm-binding sites occur uniformly over the surface of the egg.
• B) Microtubules organized by the sperm's centriole guide movements of cortical cytoplasm.
• C) The gray crescent is a band of the most darkly pigmented cytoplasm in a fertilized frog egg.
• D) Inner cytoplasm rotates, relative to cortical cytoplasm, toward the site of sperm entry.
• E) The gray crescent marks the location of sperm entry.

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Definitions:

Archaea

A domain of single-celled microorganisms that are genetically distinct from bacteria and eukaryotes, often found in extreme environments.

Bacteria

Single-celled microorganisms with a wide range of functions, from causing disease to aiding in digestion and nutrient cycling.

Eukarya

One of the three domains of life, comprised of organisms with cells that contain a nucleus, including animals, plants, fungi, and protists.

Chemoautotrophs

Organisms that obtain their energy through the oxidation of inorganic molecules rather than from sunlight.