1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
forsale [732]
3 years ago
6

What genetic and other changes might have caused these cells to escape normal cell cycle regulation these cells are hela cancer

cells
Biology
1 answer:
elixir [45]3 years ago
4 0

Answer:

Cancer cells such as Hela cells escape to normal cell cycle by mutations that lead to the misexpression and/or overexpression of regulatory molecules (e.g., cyclins and cyclin-dependent kinases) and faulty checkpoint control of the cell cycle  

Explanation:

The term cell cycle refers to the mechanism of DNA replication and cell division, which involves a series of sequential steps. The control of the cell cycle depends on 1-cyclins and cyclin-dependent kinases (CDKs) that regulate the cell cycle by a cascade of protein phosphorylations and 2- a group of checkpoint controls that monitor the completion of critical cellular events. HeLa is an immortalized cell line derived from cervical cancer cells. These cells (HeLa) contain 76 to 80 total chromosomes (instead of the 46 chromosomes that contain normal-diploid body cells), some of which are heavily mutated. These mutations can affect CDKs that control the cell cycle as well as checkpoint-control mechanisms (for example, those resulting from DNA damage), thereby cells do not enter programmed cell death (apoptosis) and proliferate uncontrollably.

You might be interested in
Hacer un acrostico de fenomenos ambientales
expeople1 [14]
Lo siento, no sé cómo ... = (
4 0
3 years ago
If a post synaptic neuron is stimulated to threshold by spatial summation this implies that ________. the postsynaptic cells has
Valentin [98]

Answer: The postsynaptic cells has many synapses with many presynaptic neuron.

Synapse can be defined as a structure that allow neuron to send a chemical or electrical signal to another neuron. However, postsynaptic potential is a temporary change in the electrical polarization of the membrane of a nerve cell and they are known to be receiver of neurotransmitter message.





5 0
3 years ago
Which of these statements best describes a similarity between photosynthesis and dissolving in the sea?
Mama L [17]

The correct answer is D. Both absorb carbon dioxide from the atmosphere.

The process of photosynthesis is carried out using atmospheric carbon dioxide by green plants. Many gases including carbon dioxide are dissolved in seawater. Some of the carbon dioxide gas remains in dissolved state but most of the carbon dioxide is reacts with water to form carbonic acid. Dissolved gases in seawater make balance with atmosphere by mixing of the surface by wind and waves. Therefore, both photosynthesis and sea water take carbon dioxide from the atmosphere.  

8 0
3 years ago
Tall height is dominant to short height in pea plants. You have a tall pea plant that you cross with a short pea plant. What is
zheka24 [161]

Answer:

The tall parent was heterozygous

Explanation:

If tall height is dominant to short height the only genotype possible for short height is hh, while there are two possible genotypes for tall height, Hh and HH. When HH is crossed with hh all the offspring are Hh, but if Hh is crossed with hh, a quarter of the offspring is HH, a quarter is hh and half is Hh. If the tall pea plants were HH there would only be tall offspring, but because there are some short offspring we know that the tall pea plants must have a genotype of Hh.  

5 0
3 years ago
Explain the importance of independent and dependent variables in an experiment.
ddd [48]

Answer: Independent variable is what is being modified, it is important to compare it to your control group, (which is the original).

Dependent variable is what is being measured, to compare it to the control group to see if your hypothesis works or not.

Explanation: Here's a(n) example:

Bob wanted to take a mint with a mint drop, and he wanted to measure if it can make his breath fresher, but he also wanted to take it with a regular mint to see which is the freshest breath.

Independent variable: Mint drop.

Dependent Variable: Breath (To see if it is going to change with a mint drop.)

Control Group- Regular mint.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Prokaryotes that are round are called spirochetes. <br> a. True<br> b. False
    11·1 answer
  • The parts of Earth's atmosphere, ocean, land surface, and soil that contain all living organisms is called ___
    14·1 answer
  • Methane gas must be removed from landfills because _____.
    9·1 answer
  • The ____________ contains enzymes that penetrate the egg for fertilization.
    12·1 answer
  • What impact does the atmosphere have on the Earth’s cycles? Select four options. produces wind currents, transfers nitrogen from
    5·2 answers
  • . Which of the following is used to avoid bias in a clinical trial
    11·1 answer
  • Which statement is a scientific law?
    10·1 answer
  • Cellular respiration occurs in a sequential order. this allows the cell to
    15·1 answer
  • According to the theory of evolution by natural selection, which of these statements is correct?
    12·1 answer
  • A nurse is caring for a client with a cerebral aneurysm. which nursing interventions would be most useful to the nurse to avoid
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!