Does red blood cells contain nuclei?
Red cells, at one time contained nuclei; however, when circulating in your blood stream, they do not.
What happens when you have 2 nuclei in one single cell?
The only time there can be 2 nuclei in a single cell is during mitosis, where one cell multiplies and becomes 2 cells.
Which part of the cell cycle is the period of nuclear division?
The M phase, or mitosis, is a brief period of time in nuclear division. This is the separation of the chromosomes into two matching nuclei.
How does cell division occur?
There are 4 steps 1. Prophase- when DNA in the nucleus form double stranded chromosomes 2. Metaphase- When the chromosomes line up vertically in the center of the nucleus 3. Anaphase- The chromosomes split apart and move to opposite sides of the nucleus 4. Telophase/cytokinesis- When 2 new nuclei form, and at the same time for animal cells, the cell membrane pinches, and pulls apart. For plants, a cell plate forms between the 2 nuclei.
What are cells that do have a nuclei?
Nucleus is an imp component of cell essential for survival . An organised nucleus appears in eukaryotes(except mammalian rbc and sieve tube cells of phloem) for the first time .Prokaryotes have an unorganised nucleus....
What process might have caused the first cells to spontaneouly generate over a very long period of time?
Chemical evolution is thought to have caused the first cells to spontaneously generate over a very long period of time.
What do you mean by Imperial Rome?
Imperial Rome is generally considered the time from Augustus froward. It is a time period which is referred to as the "empire" as opposed to the previous republican form of government. Imperial Rome is generally considered the time from Augustus froward. It is a time period which is referred to as the "empire" as opposed to the previous republican form of government. Imperial Rome is generally considered the time from Augustus froward. It is a… Read More
Why is embriotic stem cell research good?
It is very promising area of research. Embryonic stem cells have capacity of totipotency which means they can form into any tissues. The only problem with the research is that the cells division after certain period of time gets out of control and it develops into tumor.
Why can elements be produced in the sun but not in Earth's atmosphere?
Over time, the fusion reactions can form as the reactions that form nuclei of slightly heavier elements, such as carbon, nitrogen, and oxygen. Thank you = )
What happens to a radioactive material over time?
It disintegrates into its daughter nuclei that are much more stabler than the radioactive nuclei. If a sample of radioacictive material is left it will decay into another element over a period of time. Note that complete decay is not possible. A fraction of the original radioactive material will always remain in the sample.
What is the difference of a half life and radioactive decay?
Radioactive decay is the process where unstable nuclei release energy and particles in order to reach a lower energy state. Half-life, on the other hand, is the period of time where one half of the population of nuclei achieve radioactive decay.
What are the adaptations of the amoeba?
Over time amoebas have changed quite a bit. An amoeba often has two nuclei because of its size. Many protist cells like it are not the same size as amoebas are. They have two nuclei to regulate the cell activity inside the cell. The nuclei inside of it are actually two different types. There is the equilibrium nucleus which is the biggest of the two an the mitosis which contains no nucleolus
Cell membrabe of amoeba is rigid?
The Amoba cells after a period of time will wank with a partner
Why RBC does not have nucleus?
Human RBC's don't have nuclei, at least not the mature ones. This enables them to devote all of their time to move oxygen and carbon dioxide around the cells in human body..
Why was if difficult to find interphase cells in the whitefish blastula slide?
This is because the cells divide so rapidly that Interphase is such a short period of time; thus, few cells are in Interphase.
Does this statement support the theory of evolution all living cells come from previous cells?
Yes. The living cells come from previous cells. And after a long period of time, a mutation will occur, leading to evolution.
How many nuclei does an onion cell have?
An onion cell only contains one nuclei. The only time that this is not true would be when the nuclei is dividing.
Does mitosis occur in all cells all the time?
No. Mitosis does not occur in all cells all the time. Most of a cell's life is spent in interphase, which occurs before mitosis, and is the period in which the cell is carrying out its life functions. Some cells, such as nerve cells never undergo mitosis.
What happens in your muscle tissue and cells when the demand of oxygen is not met?
If the demand for oxygen is not met for a long period of time, the cells within the muscle tissue will die.
What does alchohol do to your brain?
Alchohol over a period of time kills brain cells causing your brain to die.
What is the half life of radioactive elements?
The half-life of a radioactive element is the time required for one-half of the nuclei of a radioisotope sample to decay to products. Half-life (t½) is the time required for a quantity to fall to half its value as measured at the beginning of the time period.
What is a list of the three identifying characteristics of stem cells?
The three identifying characteristics of stems include the ability to develop into a wide variety of specific cell types, remain undifferentiated in form, and both divide and renew over a lengthy period of time.
Red blood cells?
A cubic millimeter of blood has more than 5 million red blood cells. In these disk-shaped blood cells is hemoglobin, a chemical that can carry oxygen and carbon dioxide. Hemoglobin carries oxygen from your lungs to your body cells. Red blood cells also carry carbon dioxide from body cells to your lungs. Red blood cells have a life span of about 120 days. They are formed in the marrow of longs bones such as the… Read More
What is the difference between a ingdom and a republic?
A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time. A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of… Read More
Some fuels are classified as nonrenewable because they?
require a long period of time to form
How does a volcano form into a mountain?
When a volcano erupts the magma hardens over a period of time causing the magma to form into an igneous rock
How often are cells made and do the old ones die?
Cells die every second in the body. Over a million cells are made every minute in your body. This is how you heal and grow. The cells naturally renew themselves after a certain period of time and are expelled out of the body.
Venous blood is collected anticoagulant added and the distance cells fall in a period of time is determined?
Erythrocyte sedimentation rate
What period is granite from?
Granite does not come from any particular time period. Nor does any kind of rock. Most granites, though, are quite old, though, as it takes time for them to form and then be exposed.
Which period came after triassic?
jurassic, then cretaceous. together, the triassic, jurassic, and cretaceous form the mesozoic era, the primary time period in which dinosaurs lived.
Compare nuclear fisson and nuclear fusion?
Nuclear fission is what is used for nuclear power today, it is the splitting of a large atom's nucleus to form two smaller electrons by firing a beta radiation particle at it (an electron). Nuclear fusion is what happens in stars and the sun but is not yet possible to sustain for any period of time on Earth. It is the joining of the nuclei of two smaller atoms to from a larger atom, releasing… Read More
What do cells specialize to form during embryonic development?
During embryonic development cells specialize to form tissues. Mitotic cell division is very important during body growth. After this time muscle tissue becomes amniotic.
Why is it hard to find interphase cells in a whitefish blastula slide?
This is because the cells divide so rapidly that Interphase is such a short period of time; thus, few cells are in Interphase. Read more: http://wiki.answers.com/Q/Why_was_if_difficult_to_find_interphase_cells_in_the_whitefish_blastula_slide#ixzz1bA8qev4n
What makes something medieval?
Something Is Considered Medival When It Came Form The Medival Time Period.
Is moment an adjective?
No, it is not. It is a noun usually meaning a short period of time (with the adjective form momentary).
Why did classical Greece form?
Classical Greece form because after the Archaic period, Greek art, architecture, literature and philosophy boomed. The Classical Period lasted from 480 to 323 BCE and was a time of great cultural development.
The amount of time it takes for half the nuclei in a sample of a radioactive isotope to decay is called its?
The amount of time required by half the nuclei in a sample of radioactive isotope to decay is called its Half life.
What period did the continents move together to form Pangaea?
Pangaea came together over a period of time spanning the Carboniferous and Permian periods. It broke up mostly during the Jurassic period.
Which cells lose their ability to replicate and divide?
There are many cells that loose their capability to divide after certain period of time ( a phenomenon known as replicative senescence in molecular biology). These cells are differentiated and are accustomed to the functions to which they are destined. Most of the cells in the animals are not able to divide, the best examples being neurons and cardiac cells.
Does lack of oxygen kill cells?
Not necessarily. for anaerobic cells it actually increases their growth rate, as oxygen is toxic to them for aerobic cells they can usually fallback on anaerobic fermentation for a short period of time, but yes sustained lack of oxygen will eventually kill them
When is the best time to have a pap test?
The Pap test is usually not done during the menstrual period because of the presence of blood cells. The best time is in the middle of the menstrual cycle.
What is differences between time period and simple pendulum?
A time period is a measure of a basic phenomenon : the passage of time. Time periods are independent of human beings or even of life of any form. A simple pendulum is a man-made device to make approximate measurements of time periods.
What is fixation in microbiology?
Fixation is performed to preserve cells in a sample and to and to make the cells permeable to reagents and probes, then samples can be stored for a certain period of time, while the cells remain intact. Generally the amount of time they can remain intact is unknown. Paraformaldehyde fixative is the chemical that you use, along with NaOH and phosphate buffered saline.