Answer:
A new study provides a key insight into a milestone event in the early evolution of life on Earth -- the origin of the cell nucleus and complex cells. Scientists peered deep inside current living cells, known as Archaea - the organisms that are believed to most closely resemble the ancient intermediates between bacteria and the more complex cells that we now know as eukaryotic cells.
Explanation:
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The answer is A. Sea levels rose over 300 feet
Answer:
D. Nucleus.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.
Proteins on the surface of vesicles determine where the vesicles go.
The nucleus is the cell organelle which provides the instructions for these proteins. It controls all the activities taking place in the cell and the synthesis of proteins.
A dichotomous key is a tool that helps the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish.
Answer:
The technique of X-ray crystallography is used for finding the <u>atomic</u> (gives energy to atoms and then to molecules) and <u>molecular structure</u> (The arrangement of chemical bonds between atoms in a molecule). The crystals will then cause the X-ray to <u>beam a pattern onto a film structure</u>. Then finally you're left with a <u>diffraction pattern</u> (passing through a narrow aperture (film) or across an edge, typically accompanied by interference between the wave forms produced).
