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galina1969 [7]
3 years ago
15

Need help on this a l s o g i v i n g p e o p le f r e e p o i nts

Biology
2 answers:
Aleksandr [31]3 years ago
8 0
The answer for this is Density
Dominik [7]3 years ago
3 0

Differences in temperature and salinity change the <em>density</em> of seawater.

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In a tissue-culture lab, a scientist prepared somatic embryos of a banana. He wants to induce root development. Which hormone ty
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the answer is A (cytokinins)

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3 years ago
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It is a small RNA molecules that interfere with gene expression.
Semmy [17]

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miRNA ( micro RNA )

Explanation:

The small RNA molecule that interfere with gene expression are miRNA. The miRNA is micro RNA that are non-coding molecules of RNA. These small RNA regulate gene expression after transcription (post transcription).

The miRNA binds to 3' UTR region (untranslated region ) and halt the process of protein production and thereby silencing mRNA.

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7) Which of the following are part of the hindbrain? Check all that
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Answer:

The answer is None of the above

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The reason why is because there are three main parts of the hindbrain, which are ... Pons, Cerebellum, and last but not least the Medulla oblongata.

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2 years ago
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If the integument of an angiosperm seed contains cells with 20 chromosomes, how many chromosomes would you expect to find in the
OleMash [197]

Answer:

30

Explanation:

The seed of an angiosperm is formed as a result of fertilization (fusion of sperm in pollens and the ova from ovary). According to the question, the cells of the seed which will grow into the plant contains 20 chromosomes. Seeds of angiosperms contain a tissue called ENDOSPERM that forms as a result of the unique DOUBLE FERTILIZATION in angiosperms. It occurs when one haploid sperm cell fuses with two haploid polar nuclei to form a triploid endospermic structure that serves as food for the growing embryo in the seed.

Now based on the above explanation, the diploid plant cell with 20 chromosomes will have 10 chromosomes (half as much) in its gametes as a result of meiosis. This 10 chromosomes in each gamete (sperm and ovum) fuses to form a diploid zygote with 20 chromosomes, while one haploid sperm cell (10 chromosomes) also fuses with two haploid polar nuclei (10 chromosomes each) to form a triploid endosperm with 30 chromosomes i.e. 10+10+10.

8 0
3 years ago
What is the term for a fruit that develops from tissues other than the ovary?
bekas [8.4K]

The correct answer is D. Accessory fruit

Explanation.

Fruits are structures that develop from the fertilized ovary of plants and that contain the seed of it, this includes simple, aggregate and multiple fruits. However, there is one type of fruits that do not develop from ovary but from other tissues that are usually near the ovary, these fruits are called accessory or pseudo fruits as they do not fit completely the definition of regular fruits, this includes fruits such as strawberries or pineapples that develop from tissues different to the ovary.

6 0
3 years ago
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