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GaryK [48]
2 years ago
12

Strawberry DNA Extraction lab What was the purpose of the Sodium Chloride? Include a discussion of polarity and charged particle

s.
Biology
1 answer:
lys-0071 [83]2 years ago
5 0

Answer:

Sodium chloride removes proteins from DNA and helps in DNA precipitation.

Explanation:

The Deoxyribonucleic acid (DNA) is negatively charged due to the highly polar phosphate groups that make up the phosphate backbone. The molecules of water are also highly polar and they have positive charge, thereby water molecules interact with the negative charges of the DNA. The sodium chloride generates temporary attraction forces between sodium (positive) ions and the DNA backbone (negative), thereby DNA can be disassociated from the aqueous layer. Moreover, sodium chloride helps to remove proteins (histones) that bound to DNA and also helps to maintain proteins in the aqueous layer.

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Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the
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Complete question:

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit.

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1. deciduous trees lose their leaves seasonally and include trees such as ----- and ----.

2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include ---- and -----.

3. evergreens are plants that maintain their leaves in all seasons and include trees such as ---, ---, and ---.

4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as ---, ---, and ---.

Answer:

1. deciduous trees lose their leaves seasonally and include trees such as <u><em>elm</em></u> and <u><em>maple</em></u>.

2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include pine and cedar.

3. evergreens are plants that maintain their leaves in all seasons and include trees such as Pine, Cedar, and Mango.

Explanation:    

  • Deciduous trees:  These plant species lose their leaves every year during the cold and dry autumns and winters, as it is the most limiting period over the year. Foliage resprout again during the warmer wet season when it rains more often, during spring and summer. Template forest biome characterizes for having deciduous trees such as oaks, maple, or elm, among other phanerophyte species.

1. deciduous trees lose their leaves seasonally and include trees such as <u><em>elm</em></u> and <u><em>maple</em></u>.

  • Conifer: Correspond to the gymnosperm group. They are perennial, vascular, evergreen, woody plants. They characterize for having a straight trunk with secondary growth and no vessels in the xylem tissue. Their branches usually develop horizontally, with needle-like leaves growing on them, unisexual flowers, and seeds included in a cone.

 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include pine and cedar.

  • Evergreens: Perennial plants that keep their green leaves the whole year.  These are the opposite of the deciduous trees. Tropical forests characterized for having these broadleaf plant species, such as mango, that are favored by the environmental conditions as precipitations are abundant and the average temperature is elevated most of the year. Also, many evergreen plants are typical of the boreal forest.  Pines, cypress, cedar, and sequoia are examples of these last ones.

3. evergreens are plants that maintain their leaves in all seasons and include trees such as <u>Pine, Cedar,</u> and <u>Mango</u>.

  • Hardwoods: Angiosperms. Xylem with vessels. These species present a high diversity in shape, textures, and sizes. They might reproduce asexually or sexually by producing flowers, fruits, and seeds. Also, they might be either evergreen or deciduous.

4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as <u><em>Elm, Maple</em></u>, and <em><u>Mango</u></em>.    

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Since the adult mouse obtains 40 chromosomes, the mouse zygote would have the same, 40 chromosomes. 
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