1. DNA 2. RNA 3. Both RNA and DNA 4. Neither RNA nor DNA. Is transcription the same in prokaryotes and eukaryotes? Do bacteria have RNA or DNA? In eukaryotic cells, can many ribosomes make polypeptides from a single RNA? Is the RNA and DNA polymerase in prokaryotes and eukaryotes the...
Yes, all bacteria have plasmids. Plasmids are a small, circular, double-stranded DNA molecule that naturally exist in all bacterial cells. Every bacterial cell has its own plasmid which is separated from chromosomal DNA. These plasmids have the ability to replicate independently and are transferred...
Do bacteria have genes for genetic exchange? The idea that the bacterial processes that cause genetic exchange exist because of natural selection for this process is shared by almost all microbiologists and population geneticists. However, this assumption has been perpetuated by generations of biology,...
We could improve our understanding of the mechanisms of transcription by identifying all of the different regulatory proteins' targets. Bacteria are ideal model systems for such studies because of the way they rapidly adapt to, and survive, changes in their environment. 展开 关键词:...
Cell differentiation is a process where stem cells will transform into a specific cell type with a specific function, and will typically remain that cell type for the length of its life.Answer and Explanation: All cells contain the same DNA in their nuclei. However, the main factor that...
a By definition, bacteria do not have a true nucleus. Their DNA is not enclosed by a nuclear membrane but instead is aggregated in a central area of the cell called the nucleoid. 由定义,细菌没有一个真实的中坚力量。 他们的脱氧核糖核酸没有由一个核膜在称nucleoid的细胞的一个中心地区附寄,...
They are so common that there areabout as many bacterial cellsas human cells in your body. Their diversity is also stunning. Recent estimates found that there areover one billiondifferent types of bacterial species. Even though bacteria may seem wildly different than humans, we all do have at...
when you kiss your partner passionately, not only do you exchange bacteria and mucus, you also impart some of your genetic code. No matter how fleeting the encounter, the DNA will hang around in their mouth forat least an hour. How long does DNA last after death?
For bacteria, humans have found a more effective way to kill it, that is to apply antibiotics. The most typical case is the discovery of penicillin in the early history. Penicillin can destroy the polysaccharides on the bacterial cell wall, and cause the surface of bacteria to be exposed. ...
How many chromosomes do dogs have? How many chromosomes does the family Ursidae have? How many autosomal protein-coding genes does a human have? How many chromosomes do bacteria have? How many autosomal cells do humans have? How many autosomal genes are there?