These are the choices for this question:
<span>(1) Endosymbiosis most likely began with a heterotrophic endosymbiont entering the cell as undigested prey or as an internal parasite.
(2) Most likely began with the endosymbiont entering the host cell through the endomembrane system
(3) Describes the engulfing of a photosynthetic bacterium that ultimately gave rise to mitochondria.
(4) Is thought to explain the origin of the nucleus.
The correct answer is "e</span>ndosymbiosis most likely began with a heterotrophic endosymbiont entering the cell as undigested prey or as an internal parasite". Endosymbiosis is described to be the origin of eukaryotic cell by a cell engulfing two prokaryotic organisms, one capable of cellular respiration and one capable of photosynthesis. The endosymbiont did not enter the cell through the endomembrane system as lysosomal/peroxisomal enzymes may kill these organisms instantly.
Choice (3) is wrong as the photosynthetic bacterium gave rise to the chloroplast, not the mitochondria.
Explanation:
A new calculation reveals just how intensive that process is. According to biologists Ron Sender and Ron Milo of the Weizmann Institute of Science in Israel, your body replaces around 330 billion cells per day. At that rate, your body is making over 3.8 million new cells every second.
an alpine glacier is ice on the move in a river
Answer:
Cultivate prime grain and with timely care
