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Feliz [49]
3 years ago
10

25 POINTS

Biology
1 answer:
Inga [223]3 years ago
6 0

Answer:

C. Joining of self-replication molecules into protocells.

Explanation:

For the origin of life, at least three conditions are needed.  

  • there must have been a supply of replicators, that is, self-replicating molecules.
  • copying of these replicators must have been subject to error through mutation.
  • the system of replicators must have required a continuous supply of free energy and partial isolation from the general environment.

The radiation received from the sun on the early earth must have fulfilled the requirement of mutation. The mutation is necessary for bringing variation in the genetic material thus driving evolution. To protect the self-replicating molecules from the external environment and to keep them together, the molecules must have been enclosed in a membrane barrier, which should be selectively semipermeable, to facilitate the exchange of molecules.

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An animal that eats only plants is called a herbivore because it comes from herbs
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Stem cells are important to multicellular organisms because of their
Lina20 [59]

Answer:

ability to differentiate into other cell types during cell division i.e. totipotent nature

Explanation:

Stem cells are undifferentiated cells with the unique ability to develop into specialized cell types in the body during early life and growth through the process of cellular differentiation. When a stem cell divides, each new cell has the potential to either to remain a stem cell or become another type of cell with a more specialized function e.g muscle cell, red blood cell or a brain cell.

Stem cells provide new cells for the body as it grows, and replace specialized cells that are damaged or lost. This ability of stem cells to differentiate into a variety of cell types in an organism including embryonic tissue, is an important distinguishing factor. They have two unique properties that enable them do so:

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2. As they divide, they can change into the other types of cell (cellular differentiation).

4 0
3 years ago
Help me with this I need it now please ​
IrinaVladis [17]

I am here to give the brainiest answer not to get points

Answer: yes

6 0
2 years ago
Part D-Relationship of allele behavior to meiosis During which part of meios s (mesoses Ⅰ or meiosis ll) do the two alleles of a
katen-ka-za [31]

Answer:

The correct answer will be- Meiosis I, anaphase I

Explanation:

Alleles are the variant alternative forms of a gene which determines the trait of an organism. The trait or phenotype is expressed only when the two alleles controlling a single trait on separate chromosomes are aligned in a complementary position.

During gamete formation, the alleles controlling a trait segregate independently of each other. This segregation of alleles takes place during Anaphase I of meiosis I. During anaphase, the sister chromatids are separated by the mitotic spindles so that the chromosomes can reach the opposite poles.

Thus, Meiosis I, anaphase I am the correct answer.

7 0
3 years ago
Ingredients on food labels should be listed in order of ____________.
scoundrel [369]
<span><span>C. descending order by weight. </span>The standard rule in food labeling guide is to list ingredients </span>in order of weight. The first ingredient being the one that weighs the most, and the last ingredient that weighs the least. Water should also be included in the list of ingredients unless it's less than 5 percent of the product.

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3 years ago
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