0
So cell cycle is independent of nutritional state. Compare and contrast to the virus Lambda, which makes a molecular decision whether to be in the lytic or lysogenic cycle based on the number of proteases - linked to nutritional state (and hence nutritional state of the infected cell).
What else can I help you with?
Are there cells with no nucleus?
Yes, there are certain types of cells called prokaryotic cells that do not have a nucleus. These cells, found in bacteria and archaea, have their genetic material floating freely in the cytoplasm rather than enclosed within a membrane-bound nucleus.
How many mitochondria are in each cell?
The number of mitochondria varies depending on the type of cell. They are most abundant in liver cells with about 1000 to 2000 mitochondria per cell.There are about 50 -100 per cell
Is an atom a cell?
Nuclei is plural for nucleus. Most cells each have one nucleus, but some have many nuclei and certain cells, such as red blood cells, do not have a nucleus. The term for a cell with more than one nucleus is coenocytic. This can be because DNA replication has not been followed by cytokenesis, but there are some specialised cells that are multinucleated, such as some fungi and skeletal muscle in mammals. one nucleus but inside that nucleus is a nucleolus.
How are cells in sodium chloride different from distilled water?
Cells in sodium chloride will experience shrinkage (crenation) due to the higher concentration of salt outside the cell than inside. In distilled water, cells will swell and potentially burst (lyse) due to water entering the cell to equalize the concentration of solutes.
Shrunken cells in a solution are?
The cell lose water in the hypertonic solution, which has higher osmotic pressure.
Do animals have a cell wall or no cell wall?
Animal cells have cell membranes (which plants have too) rather than cell walls. Only plant cells have cell walls.
What organelle would be indicative of a plant cell rather than an animal cell?
A chloroplast would be indicative of a plant cell rather than an animal cell. Chloroplasts are responsible for photosynthesis, converting sunlight into glucose, and are found in plant cells but not in animal cells.
What is the difference between paracrine signaling and synaptic signaling?
Paracrine means it is does not involve the bloodstream. It does however involve cellular secretion of signaling molecules to local cells. Synaptic signaling is a paracrine type signaling but rather than being secreted to several local cells in the vicinity of the signaling cell, the signaling molecules are just secreted to a receptor cell only a narrow space away. Imagine working in an office of cubicals. Toss wadded up notes up over your wall and into the 10 closest cubicals and compare that too just tossing it to the one next to you.
Why is chemical signaling between cells better than nervous signaling?
Chemical signaling between cells is advantageous because it allows for communication between distant cells and tissues. This form of signaling is also slower and more sustained than nervous signaling, making it suitable for coordinating long-term processes such as growth and development. Additionally, chemical signals can be released systemically throughout the body to affect multiple cell types simultaneously.
What impact did animal cells have on cell research?
They helped for testing. scientists could test on the animals cells rather than human cells.
Why is the cell wall not present in animals?
Animals cells use a cell membrane rather than a cell wall. Animals have more active metabolisms than plants do, and therefore they need faster diffusion from cells to circulatory systems, than they would get with cell walls.
What cell does not have a cell wall and a chloroplasts?
It is the animal cell which doesn't have cell wall and chloroplast as these structure are the distinguishing characteristics of plant and algal cells.
Why are plant cells selected to demonstrate plasmolysis rather than animal cells?
Plant cells are selected to demonstrate plasmolysis because they have a cell wall that maintains the structure of the cell even when the cell membrane shrinks due to water loss. Animal cells do not have a cell wall, so they would burst instead of undergoing plasmolysis in a hypertonic solution.
Are cell addresses used to develop formulas-not values themselves?
Yes, cell addresses are used rather than values in formulas. The values are put into the cells. This makes the spreadsheet more flexible, as you can change values in the cells rather than having to change formulas. It also means formulas can be copied and made to use other cells. So there are good reasons for using cell addresses in formulas.
What is the Presence of cholesterol molecules in plasma membranes for?
Cholesterol is found in every cell of your body. It is especially abundant in the membranes of these cells, where it helps maintain the integrity of these membranes, and plays a role in facilitating cell signaling-- meaning the ability of your cells to communicate with each other so you function as a human, rather than a pile of cells.
Does splitting cells involves creating a single by combining two or more selected cells?
Splitting cells involves dividing a single cell into two or more cells. This means that you are separating a single cell into multiple cells, rather than combining cells together.
Which is the largest a plant cell an animal cell or a bacterial cell?
Plant cells are generally larger than animal cells, and both are significantly larger than bacterial cells. Plant cells have a rigid cell wall that provides structural support and allows them to grow larger than animal cells, which do not have cell walls. Bacterial cells are much smaller than both plant and animal cells.
