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aliina [53]
2 years ago
8

The mass of an element is the sum of the atomic number and the number of

Biology
1 answer:
MariettaO [177]2 years ago
5 0

Answer:

a. electrons

Explanation:

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Which group would be found on the lowest branch of a phylogenetic tree of all life?
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I think the correct answer would be the second option. The group of archaebacteria would be found on the lowest branch of a phylogenetic tree of all life. Phylogenic trees are illustrations of a hypothetical evolution of the organisms and its relationship with the other organisms. From the listed options, the archaebacteria is most likely to be the most basic and simplest life form. It should be placed before the other options so at the lowest branch. This illustration is being used by scientists to describe how evolution and the connection of the organisms came about. It sometimes called as the tree of life.
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Which type of glandular cells in the stomach secrete hydrogen and chloride that form hydrochloric acid?
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The correct option is D.
Parietal cells are the epithelial cells which secrete hydrochloric acid and intrinsic factors. The cells are located in the gastric glands which are found in the linings of the walls of the stomach. The hydrochloric acid produced by the parietal cells helps in the conversion of the enzyme pepsinogen to pepsin during the digestion process.
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Answer:

what organelle specifically?

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A tumor cell with a mutation in Rb can divide in the absence of extracellular signals. A. If the Rb mutation is responsible for
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The Rb will always stay active

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The Rb mutation is considered an irreversible process, which will generate an unlimited and excessive growth that is abnormal when compared to the other non-mutated cells.

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