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Animal cells are Eukaryota, so they are not the first examples of cells.
Archaebacteria, though they are possibly more closely related to eukaryote than bacteria are, do possess more of the hypothesis ancient methods of energy production (like thermoautotrophism and chemotherapeutic) which were prevalent before photosynthesis and aerobic respiration.
Mitochondria are related to bacteria (specifically purple photosynthetic bacteria), and they perform aerobic respiration. Aerobic respiration cannot have been the original method for deriving energy, as it required oxygen - which was not abundant in the atmosphere until photosynthesis evolved.
Chloroplasts are also related to bacteria (cyanobacteria) and they perform photosynthesis. It is currently believed that photosynthesis was not one of the original methods for deriving energy.
So my answer would be archaebacteria.
What else can I help you with?
What modern organisms do scientists think the first cells resembled?
Bacteria were the first cells.
What scientist who first observed cells?
Scientists first thought of them as small animals. They first observed cells using the microscope and the work of many scientists led to the development of the cell theory.
Where do scientists believe where cells first formed?
prokataryotic and autotrophic
What slime-covered structures are thought by some scientists to be where the first cells might have?
snotites
Who was the 1st scientist to observe cells?
The first scientist to observe cells was Robert Hooke. In 1665, he used a simple microscope to examine thin slices of cork and described the cells he saw as small box-like compartments, which he called "cells." This discovery was documented in his book "Micrographia."
What modern organisms do scientists think the first cells resembled?
Bacteria were the first cells.
What scientist who first observed cells?
Scientists first thought of them as small animals. They first observed cells using the microscope and the work of many scientists led to the development of the cell theory.
Where do scientists believe where cells first formed?
prokataryotic and autotrophic
How were cells first discovered and who were the first scientists involved?
Cells were first discovered by Robert Hooke in 1665 while examining a slice of cork through his self designed microscope.
Who was one of the first scientists to use a micrscope to look at cells?
antonie van leeuwenhoek
What slime-covered structures are thought by some scientists to be where the first cells might have?
snotites
What invention made it possible for scientists to discover and learn about cells?
The microscope was the invention that made it possible for scientists to discover and learn about cells. Its ability to magnify small objects allowed scientists to observe cells for the first time, leading to the development of the cell theory in the 19th century.
Who discover the stem cells first?
Canadian scientists Ernest A. McCulloch and James E. Till
What slime-covered structured are thought by some scientists to be where the first cells might have formed?
Snotites
What slime-covered structured are thought by some scientists to be where the first cells might formed?
Snotites
What caused scientist to discover the existence of cells?
The development of quality optical lenses allowed the making of microscopes, which permitted scientists to see things as small as typical cells for the first time in human history.
What modern cells do scientists believe to be close relatives of the Earth's first cells?
Scientists believe that modern cells called archaea are close relatives of Earth's first cells. Archaea are single-celled organisms that share similarities with the ancient cells that existed billions of years ago. Their ability to thrive in extreme environments suggests they may have characteristics similar to those of early life forms on Earth.
