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Klio2033 [76]
3 years ago
14

Which statement describes the ability of the cell membrane to allow various substance to move through it?

Biology
1 answer:
Sveta_85 [38]3 years ago
3 0
The cell membrane is selectively permeable.
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Why do plant cells need a cell wall and chloroplasts but animal cells do not?
mylen [45]

Answer:

Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . ... So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.

Explanation:

Thats because Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . ... So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.

3 0
3 years ago
In garden peas, tall plants (T) are dominant to short plants (t), and round pods (R) are dominant to constricted pods (r). A tru
Nataliya [291]

Answer:

Based on the given information, the study of different varieties of the garden pea was done, that is, tall plants with round pods having homozygous genotype TTRR, and the short plants with constricted pods having homozygous genotype ttrr. Post crossing the mentioned varieties of garden pea, the F1 generation comprises tall plants with round pods having the genotype TtRr. While when the crossing of F1 generation plants was done, the plants obtained in the F2 generation demonstrated the phenotype, that is, tall plants with round pods, which is 75 in number and short plants with constricted pods, which is 24 in number.  

This shows that the genes would have been the linked genes, as they would have been situated very close together on the homologous chromosomes, and because of this linkage, the expression of the genes would have taken together.  

In case, if there was no linkage, then the genes would have assorted independently, and the offspring produced in the F2 generation would have shown the phenotypic ratio with the features of tall plants with round pods (9), short plants with round pods (3), tall plants with constricted pods (3), and short plants with constricted pods (1).  

Though the above-mentioned situation did not occur and the plants obtained in the F2 generation demonstrated the phenotype, that is, tall plants with round pods, which is 75 in number and short plants with constricted pods, which is 24 in number. This further puts more emphasis on the fact that the genes for both the phenotypes were linked due to which expression of only the mentioned two varieties took place and the other two failed to do so.  

5 0
3 years ago
What are some medicinal items from plants?
Thepotemich [5.8K]
Ginger, Garlic, Peppermint, Lavender, Thyme, Chamomile, and Dandelion are some of many medicinal item from plants.

hope this helps!
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6 0
3 years ago
If RNA strand reads AUG CGU AAU UAU, what did its source DNA read?
borishaifa [10]

Answer:

TAC GCA TTA ATA

and apparently my answer needs to be 20 charcters long

6 0
3 years ago
The ileum has an acidic environment due to the presence of hydrochloric acid.<br> true or false​
Agata [3.3K]

Answer:

true

Explanation:

6 0
2 years ago
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