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matrenka [14]
3 years ago
11

Which features helps a cactus plant prevent water loss in a hot, dry desert environment?

Biology
2 answers:
Anastaziya [24]3 years ago
6 0
The correct answer is:  [C]:  "waxy surface" .
________________________________________________________
skelet666 [1.2K]3 years ago
5 0
The answer is C (a waxy surface)
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Las bacterias son capaces de transferir plasmido De una celula ah otra Mediante la estructura bacteriaNa Cual es esa estructura
krok68 [10]

Answer:

Pilus.

Explicación:

Pilus es la estructura que se encarga de transferir el plásmido entre las células bacterianas. Un pilus es un apéndice con forma de cabello que se encuentra en la superficie de muchas bacterias y arqueas. Esta estructura de pilus es responsable de la transferencia de plásmido de una célula a otra. Esta transferencia de plásmido de una célula bacteriana a otra se llama conjugación bacteriana, por lo que podemos concluir que el pilus es la estructura o apéndices que causa la transferencia de plásmido.

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3 years ago
After eating a salty snack like potato chips, the cells in your mouth become saturated with salt. What happens to the cells in y
Minchanka [31]
I believe the answer is B
8 0
3 years ago
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Which of the following is an important function of selenium
mylen [45]

Answer: Selenium is important for reproduction, thyroid gland function, DNA production, and protecting the body from damage caused by free radicals and from infection

Explanation:

Selenium is important for reproduction, thyroid gland function, DNA production, and protecting the body from damage caused by free radicals and from infection.

7 0
2 years ago
Environmental science please help
goldfiish [28.3K]

Answer:

1. ecology: e)the study of the relationship among organisms and the relationship between organisms and their environment.

2. Aristotle: g)an ecologist who developed classification system fro plants and animals.

3. environment: i) physical and biological surroundings of an organism.

4. cell: j) the basic unit of life.

5. Schleiden and Schwann: l) proved that cells are formed from the division of cells that already exist.

6.

7: ecosystem: i) physical and biological surrounding of an organism.

8: organism: k) any unicellular or multicellular organism.

9: biomes: c) land proportions of the ecosystem. e.g desert and tundra.

10: species: f) group or population of organisms that interbreed.

11: biosphere: h) the variety of species in different habitats on earth.

12: population: d) group of the same species living together in a certain location or region.

13: mutation:

14: Charles Darwin: b) proposed theory of natural selection.

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8 0
3 years ago
Researchers noted that when a lysine residue on a histone is acetylated, its side chain becomes neutral in charge. Combined with
lesantik [10]

Answer:

The correct answer is A) Histone deacetylation generally decreases gene expression.

Explanation:

Histones are the proteins that are responsible for the condensation of chromatin, which is directly linked to the capacity that a gene has to be expressed. The more condensed a gene is, the less expressible it becomes.

In order to regulate the gene expression, histones can suffer from many modifications that can change their conformation and the expressiveness of specific genes.

<u>Histone acetylation is linked with an increase of gene expression; while deacetylation and methylation decrease gene expression.</u>

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