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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

#SPJ4

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1. Nebula

2. Protostar

3. Low-mass star

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6. White Dwarf Stage

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7 0
3 years ago
Photosynthesis and Cellular Respiration
Nat2105 [25]

Answer:

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7 0
3 years ago
Suppose an assassin uses abrin, a translation inhibitor, to poison her victim. Place the events in chronological order, starting
mihalych1998 [28]

Answer:

The events in chronological order are:

  1. Abrin is absorbed into the blood and enters the body's cells
  2. Abrin binds to ribosomes in the cytoplasm
  3. Abrin inactivates the 28S rRNA in the large subunit of the ribosome.
  4. Ribosomes are unable to add new amino acids to polypeptides
  5. Protein synthesis halts in many tissues
  6. Multiple organ systems fail
  7. Victim dies

Explanation:

Abrin is a toxic protein obtained from the seeds of Abrus precatorius, it is highly toxic, with an estimated human fatal dose of 0.1-1 microgram/kg, and causes death after accidental and intentional poisoning.

When ingested the abrin would enter the victim's body and travel through the blood and eventually enter a cell's cytoplasm (abrin is absorbed into the blood and enters the body's cells). Once there it would interact with the ribosomes and reacts with them on a molecular level (peptide bond catalytic enzyme) (abrin binds to ribosomes in the cytoplasm), which results in the ribosome exhibiting its toxic response to abrin (abrin inactivates the 28S rRNA in the large subunit of the ribosome). As a result of the ribosome reacting to abrin (ribosomes are unable to add new amino acids to polypeptides), protein synthesis within that cell is affected (protein synthesis halts in many tissues). Once multiple cells are affected by abrin the organ will exhibit its toxic response (multiple organ systems fail), and the victim would die.

8 0
3 years ago
Which of these factors is associated most closely with biodiversity?
anygoal [31]

Answer:

B

Explanation:

5 0
2 years ago
Plz help me plz help
Irina-Kira [14]

Answer:

The picture is blank

Explanation:

___________

8 0
3 years ago
Read 2 more answers
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