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marysya [2.9K]
3 years ago
9

please somebody help me with science Gel Electrophoresis what are the answer chioces for 1 through ten please whoever report is

unacceptable please help me I need help badly ​u can u do half I just need help

Biology
1 answer:
AleksAgata [21]3 years ago
6 0

1. A

2. C

3. D

4.B

5. A,B, and maybe C.

6. B

7. D

8. A and B

9. A,

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The element Ag has how many protons?
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The element has about 47 protons
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3 years ago
Match the following.
valkas [14]

Answer:

1 . The stage on the first meiotic division when the homologous chromosomes move to opposite poles but the sister chromatids remain together

: b. Anaphase I

2 . The stage in the second meiotic division where sister chromatids migrate to opposite poles

: c. Anaphase II

3 . A structure on the chromosome that holds a pair of chromatids together during replication

: f. centromere

4 . A double-stranded chromosome following replication attached by a centromere

: d. chromatid

5 . A condition where non-sister chromatid of homologous chromosomes exchange genes

: e. crossing over

6 . The stage in the first meiotic division where the homologous chromosomes line up as a pair

: a. Metaphase I

7 . The stage in the second meiotic division where the chromatid pair lines up at the equator of the cell: g. Metaphase II

Explanation:

DNA replication occurs during the S phase of the interphase of the cell cycle. The replicated DNA molecules are accommodated in two sister chromatids of a chromosome that are held together by a centromere.  

During prophase I, the chromatids of a homologous chromosome pair exchange a genetic segment. This process is called crossing over. It generates recombinant chromatids with new combinations of genes.

Metaphase I of meiosis I includes the alignment of homologous pairs of chromosomes at the cell's equator. This is followed by separation and movement of homologous chromosomes to the opposite poles of the cell during anaphase I.  

Metaphase II of meiosis II includes the alignment of individual chromosomes, each with two sister chromatids, on the cell's equator. During anaphase II, splitting centromere separates the sister chromatids which then move to the opposite poles of the cell.

3 0
3 years ago
Scientists use a dichotomous key to help them identify and classify living things. the word dichotomous means
stepladder [879]

Answer:

C

Explanation:

4 0
3 years ago
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The type of reproduction that is most often used by multicellular organisms is.
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Meiosis is involved in the formation of the gametes of multicellular organisms.

<h3>How do multicellular organisms reproduce?</h3>

Both plants and animals reproduce by developing new individuals, through gametes or reproductive cells.

<h3>Characteristics of multicellular organisms reproduction</h3>

  • Many multicellular organisms always arise from a single cell called a zygote, the result of the union of two gametes (female and male).

  • The zygote subdivides rapidly throughout gestation, forming the entire body of the creature that, from its birth, begins to grow.

Therefore, multicellular organisms reproduce by means of certain types of reproductive cells that are generated and take care of building a complete new individual.

Learn more about multicellular organisms reproduction here: brainly.com/question/220315

5 0
2 years ago
The image shows the Great Rift Valley in Africa, an example of a rift valley.
schepotkina [342]

Answer:

The rift valley formed when the crust pulled apart.

Explanation:

The statement that best describes how the Great Rift Valley in Africa formed is that they formed when the crust pulled apart.

  • This is geologically known as divergence.
  • The Arabian plate and the Nubian/Somali plate are divergent plates.
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  • Along such margins, earthquake activities are prominent.
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