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IgorLugansk [536]
3 years ago
15

Scientific ____ must be supported by observations and results from many investigations and are not absolute.

Biology
1 answer:
azamat3 years ago
3 0
Scientific methods must be supported by observations and results from many investigations and are not absolute.
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Differentiate between active natural immunity and passive natural immunity?​
Bingel [31]

Explanation:

A prominent difference between active and passive immunity is that active immunity is developed due to the production of antibodies in one's own body, while passive immunity is developed by antibodies that are produced outside and then introduced into the body.

4 0
2 years ago
These statements describe three different reactions.
Arte-miy333 [17]

Answer: 2 - The nucleus of an atom is split apart

Explanation: Any reaction involving the nucleus of an atom is called a nuclear reaction. It is different from ordinary chemical reactions that involve electrons because it involves the release of large amount of energy. Nuclear reactions can be classified as nuclear fission and nuclear fusion.

A nuclear reaction in which a nucleus of an atom is split into two smaller atoms with a release of large amount of energy is called nuclear fission. A nuclear reaction that involves the combination of lighter nuclei of elements to form heavier atoms that are more stable with the release of a large quantity of energy is called nuclear fusion.

5 0
3 years ago
Which three of the following best describe what would happen if mitosis did not take place?
vaieri [72.5K]

Mitosis refers to the procedure of cell division, in which a cell goes through a carefully mediated nuclear division, which results in the production of two genetically similar daughter cells. The mitosis comprises five active stages, that is, prophase, premetaphase, metaphase, anaphase, and telophase.  

In a single-celled species like an amoeba, it is the process of mitosis by which the cells reproduce. After undergoing through the five stages of mitosis, it is via the procedure called cytokinesis, the single cell dissociates into two similar cells, thus, completing the reproduction.  

During injury, the process of mitosis takes place to substitute the damaged cells. This repair is mainly essential for the blood vessels and skin that safeguards the organs and muscles in the body. Mitosis also assists to substitute the lost blood via a wound.  

Thus, if the process of mitosis would not take place, then the organism would remain a single-cell, asexual reproduction would not take place, and the tissues of the body would not be able to repair themselves.  


4 0
2 years ago
PLEASE HELP WOTH BIOLOGY!! WILL GIVE BRAIN!!
fenix001 [56]

Answer:

D/4

Explanation:

Hom-zygous recessive is both genes are recessive/tt

Hom-zygous dominate is both genes are dominate/TT

Heterozygous is 1 gene is dominate the other is recessive/Tt

6 0
2 years ago
Read 2 more answers
Carrot slices placed in a 0.2 M salt solution for several hours become flaccid (limp). Carrot slices placed in fresh water for s
SpyIntel [72]
<h2>Carrot in 0.2M salt solution</h2>

Explanation:

  • Carrot cuts put in 0.2M salt answer for a few hours gets flabby (limp).
  • Carrot cuts set in freshwater for a few hours gets <em>turgid  (firm).</em> From this, we can conclude that such as.  
  1. Freshwater is hypertonic and the salt arrangement is hypotonic to the cells of the carrot cuts.
  2. <em>Freshwater and salt arrangement are both hypotonic</em> to the cells of the carrot cuts.  
  3. Freshwater is isotonic and the salt arrangement is hypertonic to the cells of the carrot cuts.  
  4. <em>Freshwater is hypotonic</em> and the salt arrangement is hypertonic to the cells of the carrot cuts.  
  5. Freshwater and the salt arrangement are <em>both hypertonic to the cells of the carrot cuts.</em>
5 0
3 years ago
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