Which characteristics allowed Hershey and Chase to determine?
What was the key factor that allowed Hershey and Chase to show that DNA alone carried the genetic information of a bacteriophage? DNA contains phosphorus, but protein does not. Protein contains sulfur, but DNA does not. This allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.
How did Hershey and Chase label viral DNA and viral protein so that they could be distinguished explain why they chose each radioactive tag in light of the chemical composition of DNA and protein?
How did Hershey and Chase label viral DNA and viral protein so that they could be distinguished? DNA was labeled with radioactive phosphorus. coli were infected by the phage, and there was more radioactive phosphorus that entered. They concluded that DNA carried the genetic information to produce DNA and proteins.
Who determined that DNA is the genetic material of the T2 phage?
The Hershey-Chase experiment
Who demonstrated that DNA is the genetic material?
Alfred Hershey
Which is the hereditary material of life?
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms.
Is DNA the genetic material for bacteria as well as humans?
The genetic material of bacteria and plasmids is DNA. Bacterial viruses (bacteriophages or phages) have DNA or RNA as genetic material. The two essential functions of genetic material are replication and expression.
What type of DNA is bacteria?
Like other organisms, bacteria use double-stranded DNA as their genetic material. However, bacteria organise their DNA differently to more complex organisms. Bacteria have a single circular chromosome that is located in the cytoplasm in a structure called the nucleoid.
Do bacteria have ER?
No, bacteria do not have endoplasmic reticulum because bacteria is a prokaryotic organism that lacks member bound organelles such as the nucleus, endoplasmic reticulum, mitochondria, lysosomes, Golgi apparatus, etc.
Do bacteria have smooth and rough ER?
many membrane bound organelles- lysosomes, mitochondria (with small ribosomes), golgi bodies, endoplasmic reticulum, nucleus. Large ribosomes in cytoplasm and on rough ER. Bacteria, of course, have no nucleus and therefore also nuclear membrane.
Is bacteria a plant or an animal?
Bacteria are neither animals nor plants.
What are the similarities between plant animal and bacterial cells?
| Similarities DESCRIPTION | Bacterial Cells | Plant Cells |
|---|---|---|
| 3. Structures to produce energy for cell- Cell Respiration | No-occurs near cell membrane | Yes- in organelle called mitochondrion |
| 4. Structures that make proteins and enzymes for the cell | Yes-poly- (many) ribosomes | Yes- endoplasmic reticulum (organelle) |
| 5. Cytoplasm | Yes | Yes |
What are the similarities between bacteria and plants?
bacteria and plants both have cell wall and this is the main similarity ! in accurate all bacteria, cell wall may not be present !
What are 3 differences between bacteria and plant and animal cells?
Bacteria cells are very different from animal, plant or fungal cells. They don’t have organelles such as nuclei, mitochondria or chloroplasts. Although they do have ribosomes and a cell wall, these are both different in structure to the ribosomes and cell walls in the cells above.
What do plant cells have that animal cells do not?
Plant cells have a cell wall, but animals cells do not. Plant cells have chloroplasts, but animal cells do not. Chloroplasts enable plants to perform photosynthesis to make food. Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles, if any are present.
What do bacteria and plant cells have in common?
Plant cells and bacteria alike have cell walls, strong flexible layers surrounding their cell membranes that help to counteract osmotic pressure so the cell does not burst as water diffuses into it.