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yan [13]
3 years ago
13

Some patients with coronary artery disease require a heart transplantation. As an alternative, Daisy is working to produce healt

hy heart cells from embryonic cells. From which part of an embryo would Daisy derive cells that could eventually become heart cells?
Biology
1 answer:
garik1379 [7]3 years ago
7 0

The right answer is human embryonic stem cells (hESCs).

Emerging embryonic stem cells are endowed with two important capacities: that of multiplying to infinity, by simple division (self-renewal), and that of giving birth to all types. of cells of the body (pluripotency).  

These properties open up many perspectives, not only for regenerative medicine (including cardiology) but also for the study of genetic diseases and the development of treatments.

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A plant has an egg with 34 chromosomes how many chromosomes does a leaf cell of that plant have
Alina [70]

for instance in humans, the somatic cells include 46 chromosomes which is the diploid wide variety (2n) and each sperm and egg has 23 chromosomes wherein one of them is the sex chromosome.


7 0
3 years ago
Match the staining techniques with their purpose.
Dennis_Churaev [7]

A Negative stain such as India ink or Congo red-Look for the presence of a capsule.

This stain method is usually used to stain the area around the microorganism.

B The Gram stain-Divide bacteria into two groups based on cell wall structure (thick vs. thin).  

This is type of differential staining used to distinguish organisms based on their staining properties. Gram + and Gram- bacteria stain different because of different cell wall structure.

C The Ziehl-Neelsen Acid-fast stain- Identify bacteria with waxy cell walls such as: Mycobacterium tuberculosis (the cause of TB).  

This is also differential staining method which uses heat and phenol to derive dye into the cells with lipid-rich walls.

D Simple stain with a basic dye-Stain microbes a bright color to make it easier to see them in bright field microscopy.

One dye is used in simple staining in order to determinate the size, shape and arrangement of the cells.

E The Schaeffer-Fulton Endospore stain-Identify Bacillus or Clostridium species, such as the causative agents of anthrax, botulism, tetanus and gangrene.  

This is a special type of staining only used for the bacteria that can form endospores. Bacteria are first treated with heat and then with malachite green, which is very strong stain that can penetrate endospores.

5 0
4 years ago
Why do researchers need a lot of data to monitor a species population?
Yuliya22 [10]

Answer:

Researchers need a lot of data to monitor a species population because the environment is very diverse in types of species found at different places .

What happens to one part of it could affect the population of other animals, humans, and may also effect the ecosystem of that certain environmental region .

6 0
3 years ago
How does temperature affect crickets chirp
fomenos
The temp. affects on how quickly these chemical muscles reaction can occur
5 0
3 years ago
In Figure 12–5, what nucleotide is going to be added at point 2, opposite from guanine?
Luden [163]
Cytosine is the answer
3 0
3 years ago
Read 2 more answers
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