Answer:
a 5-carbon sugar, a phosphate group and a nitrogenous base.
Chemical weathering is decomposition of rock caused by chemical reactions resulting in formation of new compound. Weathering breaks down and loosens the surface minerals of rock. Hence, the broken rocks are transported to another place where it decomposes and forms soil. Therefore weathering is important for soil formation. Chemical weathering is decomposition of rock caused by chemical reactions resulting in formation of new compound.
Answer:
Explanation:
C, it has yet to split apart so the spindle fibers are yet to exist and they haven’t split apart yet
The answer is (d.) Some scientists believe that prions, tiny proteins much smaller than a cell, that can replicate themselves maybe living organisms.
Prions are like viruses, they are not alive making statement B to be true. Prions lack the ability to grow and reproduce. they are dependent to the living cells to replicate. Statement A is absolutely correct while Statement C is somehow wrong. According to scientists, the accurate count of cells in a human is 37.2 Trillion.
(A) Cells make proteins
Proteins are composed of amino acids. Proteins are made in a process called translation, in which the cell commands.
(B) RNA molecules copied before mitosis begins
DNA molecules are copied before mitosis, not RNA.
(C) mRNA molecules are transcribed to form tRNA
DNA is used as template to form both mRNA and tRNA in a process called transcription.
(D) polypeptides are made into mRNA
mRNA is the template used to make polypeptides in a process called translation.
Therefore, A is the right answer.
