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aleksandrvk [35]
1 year ago
12

The last common ancestor of all animals was probably a ________. A. unicellular chytrid B. multicellular algae C. multicellular

fungus D. flagellated protist
Biology
1 answer:
Sati [7]1 year ago
4 0

Option (D) flagellated protist is correct.

The last common ancestor of all animals was probably a flagellated protist.

<h3>What is a Protist?</h3>
  • Any eukaryotic organism that is not an animal, plant, or fungus is referred to as a protist.
  • The absence of other eukaryotes means that protists do not constitute a natural group, or clade, even though it seems likely that they all descended from a common ancestor.
  • Protozoa is another name for protists that resemble animals. Some are parasites as well.
  • The four phyla that make up the Protozoa are flagellates, ciliates, spore-forming protists, and protists that resemble amoebas.
  • Nuclear membranes surround the DNA of protists.
  • Most protists are motile, or able to move, and many of them inhabit aquatic settings.
  • Protists can reproduce sexually and/or asexually, and their life cycles are intricate.
  • Protists consume, absorb, or produce food through photosynthesis.

Learn more about protist here:

brainly.com/question/1626285

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* Carrier proteins- these are proteins which allow larger or polar molecules through the membrane. They are trans membrane proteins.

Carrier proteins essentially “carry" signals that are not soluble in aqueous solution through the blood stream to their target cells. Carrier proteins for hydrophilic signals prevent degradation of the signal. Channel proteins are embedded in cell membranes. They often are receptors (though not always), and when activated, allow specific ions to pass through the membrane.

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<h3>What happen when ventricles contract ?</h3>

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