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m_a_m_a [10]
3 years ago
12

What is a stem cell?

Biology
1 answer:
AleksAgata [21]3 years ago
4 0

Explanation:

A stem cell is a cell with the unique ability to develop into specialised cell types in the body. In the future they may be used to replace cells and tissues that have been damaged or lost due to disease.

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What are the three components of cell theory
Bezzdna [24]
1. All known living things are made up of one or more cells.
2. All living cells arise from pre-existing cells by division.
3. The cell is the fundamental unit of structure and function in all living organisms.

I hope that this helps you !
5 0
3 years ago
Read 2 more answers
The process by which isogamous organisms exchange genetic information during fertilization is called _____.
natali 33 [55]
Conjugation
The process by which isogamous organisms exchange genetic information during fertilization is called conjugation.


In process of meiosis. The hypothalamus or the master gland in most animals, including humans send signals to the ovaries and testes of the reproductive system. In response to these signals, these ovaries and testes undergoes thesex cells division which is called meiosis<span>. </span>Spermatogenesis <span>in male gametes, is the process of sex cell division among sperm cells. On the other hand, </span>oogenesis<span> is for the female gametes. These cell divisions among respective gametes produces haploid cell which only contain one pair of chromosomes, in number -23.<span> </span></span>


3 0
3 years ago
Which of the following is a demonstration of the polarity of water?
ozzi

Answer:

All of the above

Explanation:

In letter A, B, and C; in different physical situation the molecule of water behave and put in charge with its peculiar polarity. Remember that is part its quite simple and molecular structure.

Water is "dipolar", because there is an uneven distribution of electron density. Water has a partial negative charge (Delta-) near the oxygen atom due the unshared pairs of electrons, and partial positive charges (Delta-) near the hydrogen atoms.

8 0
3 years ago
Which of the following describes a properly controlled experiment?
netineya [11]

Answer:

Option D, Five radish plants are grown in sunlight, while another five radish plants are kept in the dark.

Explanation:

In a controlled experiment, impact of one independent variable is studied on the dependent variable.  

Here in this study sunlight is the independent variable while the radish plant is dependent variable.  

The researcher wants to study the effect of sunlight on radish plants when they are exposed to it   and compare it to the effect created on radish plants  that are kept in dark.  

Hence option D is correct.

3 0
2 years ago
Read 2 more answers
drawing upon the results of this exercise, why is pseudomonas aeruginosa of such concern in burn patients chegg
Agata [3.3K]

Pseudomonas aeruginosa is of concern in burn patients beacuse it can cause infections like AIDS,diabetes mellitus , etc.

Pseudomonas aeruginosa is a common bacteria that can be found in soil, water, and other environmental niches. Burn wounds are intricate microenvironments where bacterial pathogens like P. aeruginosa can cause infections. Typical virulence factors like pyocyanin and pyoverdine expressed at higher levels than they would have under conventional laboratory conditions.

Elastase is secreted as well, is primarily responsible for the host tissues'  degradation. P. aeruginosa infections cause severe consequences mostly in organisms with weakened natural defences. Examples of these circumstances include burn wound patients.

Learn more about Pseudomonas aeruginosa here:

brainly.com/question/15139053

#SPJ4

7 0
2 years ago
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