Answer:
<u>C</u> The correct sequence of the transfer of information in most organisms is <u>DNA to RNA to protein</u>.
Explanation:
Gene expression involves the flow of information from DNA molecules to the formation of proteins. Information first flows from DNA molecules to RNA through a process called transcription. Transcription is the first step of gene expression in which an RNA especially the mRNA is synthesized from a DNA molecule by RNA polymerase enzyme. Then the synthesized mRNA is taken to the cytoplasm where it undergoes the translation process to form proteins.
Answer:
See the explanation below
Explanation:
- Transcription/RNA processing: mRNA
- Translation: tRNA, rRNA
- During replication, a faithful copy of a DNA molecule is made.
- During transcription, the DNA "message" is copied onto a molecule of mRNA.
- During translation, the information carried in the mRNA is transferred to molecules of tRNA to build a protein on the ribosomes.
Answer:
Carotenes are less polar and would elute first.
Explanation:
Carotenes are organic compounds like chlorophyll, they are responsible for the orange color in carrot. So, while chlorophyll is green, carotene is orange in color.
In terms of structure, carotene is a hydrocarbon (made up of carbon and hydrogen chains), making it non-polar. On the other hand, chlorophyll (made up of carbon, hydrogen, oxygen, nitrogen, magnesium) is more polar.
Chromatography is a separation technique used to separate two or more mixtures. The working principle is based on how fast each solute travels. So in column chromatography, the components of the mixture travel through a column (e.g a burette) at different speed. The less polar component travels faster.
So far a mixture of carotene and chlorophyll, the less polar carotene will travel faster than the more polar chlorophyll. Therefore, carotene will elute first.
Osmosis: movement of water molecules from an area of higher concentration to an area of lower concentration through a semipermeable membrane.
Osmosis calculations: equation is π=iMRT
π is not equal to 3.14159 in this situation. π stands for the osmotic pressure and is usually expressed in the pressure unit of atmospheres.
Diffusion: the random movement of molecules from an area of higher concentration of those molecules to an area of lower concentration.
Prokaryotic cells: unicellular organisms that lack organelles or other internal membrane-bound structures.
Eukaryotic cells: organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotes.
Mitosis: cell division in which the nucleus divides into two nuclei containing the same number of chromosomes with an end result of two identical cells.
Stem cells: an undifferentiated cell that is capable of dividing and giving rise to one or more distinct types of specialized cells.
It is actually a different domain, which is a broader classification than kingdom
<span>anyway it is because archaea and bacteria are very different genetically </span>
also they have some very different structures
the phospholipids in cell membrane in archaea are branched, while they are smooth in bacteria
<span>bacteria and archea have different types of flagella </span>
<span>they have different ribosomes </span>
<span>thier cell walls are assembled differently </span>
<span>archaea have stuctures called hami which act like hooks </span>
<span>bacteria can share DNA via structures called pili</span>