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lianna [129]
3 years ago
11

Doctors ask patients with bacterial infections to take antibiotics for the entire prescribed course. It is important that patien

ts do this even if they start to feel better before the medication has run out. This helps to fully kill off the pathogenic bacteria and prevent bacterial resistance to antibiotics. A strain of bacteria becoming resistant to an antibiotic is an example of
A. adapting to change .
B. sexual reproduction.
C. cellular respiration.
D. a non-living thing.
Biology
1 answer:
AnnyKZ [126]3 years ago
3 0
A. adapting to change
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Define embryonic stem cells. Explain the pros and cons of Embryonic Stem Cells
just olya [345]

Answer:

Embryonic stem cells are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.

Explanation:

 

 Adult Stem Cells  

Embryonic Stem Cells      

Induced Pluripotent Stem Cells      

Pros

Trans differentiate and and reprogramming of these cells is possible but is not well studied

Thought to be less likely to be rejected if used in transplants

Success has already been demonstrated in various clinical applications  

Can maintain and grow for 1 year or more in culture

Established protocols for maintenance in culture

ESCs are pluripotent cells that can generate most cell types

By studying ESCs, more can be learned about the process of development

 

Abundant somatic cells of donor can be used

Issues of histocompatibility with donor/recipient transplants can be avoided

Very useful for drug development and developmental studies

Information learned from the “reprogramming” process may be transferable for in vivo therapies to reprogram damaged or diseased cells/tissues  

Cons

Limitations on ASC ability to differentiate are still uncertain; currently thought to be multi or unipotent.

Cannot be grown for long periods of time in culture

Usually a very small number in each tissue making them difficult to find and purify

Currently there is no technology available to generate large quantities of stem cells in culture

 

Process to generate ESC lines is inefficient

Unsure whether they would be rejected if used in transplants.

Therapies using ESC avenues are largely new and much more research and testing is needed

If used directly from the ESC undifferentiated culture prep for tissue transplants, they can cause tumors (teratomas) or cancer development    

Methods for ensured reproducibility and maintenance, as differentiated tissues are not certain.

Viruses are currently used to introduce embryonic genes and has been shown to cause cancers in mouse studies    

7 0
3 years ago
When wine matures in wood, color, bouquet, flavor, and tannins are extracted from the inside surface of the tank or barrel. also
Leona [35]
Oxygen dependent maturation of the wine

concentration of the wine when water evaporates is your answer .-.
6 0
3 years ago
Boilogy ;factors that affect enzymetic activites​
Yuri [45]
Several factors affect the rate at which enzymatic concentration, substrate concentration, and the presence of any inhibitors or activators
3 0
3 years ago
Which of the following statements is true about mutations?
Blababa [14]

Answer:

A. It is a source of genetic variation

7 0
3 years ago
Read 2 more answers
Hairpins often form at palindromic sequences in single strands of either rna or dna. however, several key features differentiate
AlekseyPX
Hairpin like structures are formed in both DNA and RNA but are common in RNA than in DNA. This is because DNA can be double stranded or single stranded while RNA is generally single stranded structure that can be double stranded only when it forms a hair pin like structure.
The features of hairpin structure in RNA are as follows:
1. This structure is a building block of many secondary structures of RNA.
2. The termination sequence during transcription also forms a hairpin loop like structure.
3. tRNA also forms a hairpin loop like structure and helps in the process of translation.   
4 0
3 years ago
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