A system of two partial differential equations which, together with certain continuity and differentiability criteria, form a necessary and sufficient condition for a complex
Answer:
Image 3
Explanation:
Prokaryotic cells are single-celled organisms that lack membrane-bound organelles, including a defined nucleus.
The only cell without membrane-bound organelles is image 3
Image 1 is a single-celled eukaryotic organism, probably a paramecium.
Image 2 is a plant cell (has a cell wall)
Image 3 is a bacterium
Image 4 is an animal cell
Answer and Explanation:
In the DNA molecule, that is formed by two strands of nucleotides, makes sense that each nucleotide is strongly bond to one another while the strands have weaker bonds, for one particular reason.
The double-stranded nature of the DNA is a key element in its correct functioning. <u>When the DNA needs to be "unzipped" for certain processes such as replication and transcription, the weak hydrogen bonds that connect the two strands are broken</u>. If the bonds between the strands were stronger, much more energy would be needed to perform the processes mentioned before, and that wouldn't be beneficial for the cells.
They are in algebraic I think
