Answer:
sun-moon-earth
Explanation:
I need the answer to!!!
Answer: All chromosomes replicate once in a cell cycle
Explanation :
DNA replication is the action of DNA polymerases synthesizing a DNA strand that is complementary to the original strand or template strand.
In eukaryotes, it is during the S phase of the cell cycle that the vast majority of DNA synthesis occur and the entire genome uncoil and divide to form two daughter cells or copies while In Bacteria, replication begins at the origin of replication, supercoiled DNA is unwound by DNA gyrase, made single-stranded by helicase, and bound by single-stranded binding protein to maintain its single-stranded state.
In Eukaryotic DNA replication. all chromosomes replicate once in a cell cycle and Replication begins at many origins along each chromosome, this is why genome replication of eukaryotes occurs faster than those of bacteteria even thouge their DNA molecules are larger than the DNA molecules of Bacteria.
The right answer is Ribosomes
The ribosome is a complex composed of RNA and ribosomal proteins, associated with a membrane (in the granular endoplasmic reticulum) or free in the cytoplasm. Common to all cells (prokaryotes and eukaryotes), the ribosome (and especially its composition) varies according to the organisms, even if it is always composed of two distinct subunits.
The ribosome is a huge ribonucleoprotein complex that allows the translation of mRNAs into proteins.
The organelle responsible for protein assembly is the ribosome. It exists either freely in the cytoplasm or attached to the rough endoplasmic reticulum, which also plays a role in protein modification. The Golgi apparatus further modifies and packages proteins, while the nuclear envelope regulates flow of substances.
Out of the organelles you listed: ribosomes, the Golgi apparatus, the nuclear envelope and the endoplasmic reticulum, it is the ribosomes that are responsible for protein synthesis. Ribosomes can either be found freely in the cell cytoplasm or attached to the endoplasmic reticulum (ER), forming what is known as the rough endoplasmic reticulum (RER). The ER, specifically the RER, plays a role in further modification of proteins. Meanwhile, the Golgi apparatus is involved in further protein modification and packaging, and the nuclear envelope acts as a barrier between the nucleus and the cytoplasm, controlling the flow of substances in and out of the nucleus.
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Answer:
b
Explanation:
Answer:
Bacteria and other living cells have some universal features that are, they are present in all the living cells.
These features include:
Plasma membrane: The lipid bilayer which separates the cell from the external environment. It is present in all the living organism.
Cytoplasm: It is a gel-like substance present within the plasma membrane of the cell (excluding nucleus). It contains and supports all the cell organelles and cell parts.
Ribosome: It is a vesicular structure made up of protein and ribosomal RNA. It is the main site of protein synthesis in all the cells. Prokaryotes generally contain 70S ribosomes and eukaryotes generally contain 80S ribosomes.
Genetic material: All the living organisms contains genetic material (usually DNA) either confined in the nucleus or floating freely in the cytoplasm.