Answer:
Carbon Dioxide / Gas
Explanation:
When carbon is in the atmosphere it is usually in the form of molecules of carbon dioxide that is released by living organisms such as humans, plants, animals etc and it is a gas.
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Answer:
enzymes are proteins that speed up chemical reactions that take place in the cell.
Botox blocks signals from the nerves to the muscles. The injected muscle can no longer contract, which causes the wrinkles to relax and soften. It is most often used on forehead lines, crow's feet (lines around the eye) and frown lines. Wrinkles caused by sun damage and gravity will not respond to Botox.
Answer:
The things that happen during meiosis I are:
- <em>Sister chromatids are condensed.</em>
- <em>Homologs come together.</em>
- <em>Homologs separates from each other.</em>
Explanation:
Meiosis is a process of cell division whose objective is to obtain gametes -cells related to reproduction- that possess half of the chromosome charge (haploids). Meiosis consists of two phases, named I and II.
A summary of the events that occur during meiosis I would be
- Prophase I
Homologous chromosomes pair up and form synapses - which can only happen in this process - forming bivalents, structures made up of two chromosomes and four chromatids. The formation of chiasms -the synaptonemic complex- allows the crossing over or recombination between sister chromatids.
- Metaphase I
Alignment of bivalents on the equatorial plate, with highly condensed chromosomes.
- Anaphase I
Each chromosome, formed by two chromatids, separates and moves to each pole of the cell, a process that implies the disappearance of the chiasms.
- Telophase I
There are two haploid daughter cells, not identical due to recombination, with chromosomes formed by two chromatids.