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castortr0y [4]
3 years ago
8

All living things are composed of cells. the work of cells is done by _____

Biology
1 answer:
EleoNora [17]3 years ago
8 0
Enzymes. It's what make all the chemical reactions in the cell possible.
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What are the phases of meiosis? ( full explanation and in order )
Alexandra [31]
Interphase: -the cell replicates its chromosomes -each chromosome has two sister chromatids held together by a centromere Prophase 1 chromosomes coil up and a spindle forms -homologous chromosomes come together matched gene by gene forming a tetrad -Crossing Over may occur when chromatids exchange genetic material -this occurs two or three times per pair of homologous chromosomes -Crossing Over results in new combinations of alleles on a chromosomes Metaphase 1: -the centromere of each chromosome becomes attached to a spindle fiber -the spindle fibers pull the tetrads to the equator of the spindle -homologous chromosomes are lined up side by side as tetrads Anaphase 1: -homologous chromosomes separate and move to opposite ends of the cell -centromeres do not split -this ensures that each new cell will receive only one chromosome from each homologous pair Telophase 1: -the spindle breaks down and the chromosomes uncoil -the cytoplasm divides to yield two new cells -each cell has half the genetic information of the original cell because it has only one homologous chromosome from each pair Prophase II- -a spindle forms in each of the two new cells and the fibers attach to the chromosomes Metaphase II- -the chromosomes are pulled to the center of the cell and line up randomly at the equator Anaphase II- -the centromere of each chromosome splits the sister chromatids separate and move to opposite poles Telophase II nuclei re form  the spindles break down  the cytoplasm divides identical to mitosis (Meiosis II) What Meiosis produces four haploid sex cells from one original diploid cell each haploid cell contains one chromosome from each homologous pair haploid cells will become gametes transmitting genes to offspring

I hope this helps

4 0
3 years ago
DNA if it is a sequence of only four letters
Nana76 [90]

Answer:

The possible letters are A, C, G, and T, representing the four nucleotide bases of a DNA strand — adenine, cytosine, guanine, thymine — covalently linked to a phosphodiester backbone.

Explanation:

7 0
3 years ago
Read 2 more answers
2. Reproduction is the function of both______<br> and organisms.
Tems11 [23]

Reproduction is the function of both living <u>plants</u> and organisms.

<h3>What is reproduction?</h3>

Reproduction can be defined as a biological process through which all living organisms (parents) produce their offspring, especially through mating.

<h3>The types of reproduction</h3>

Basically, there are two (2) main types of reproduction and these include;

  • Ase-xual reproduction
  • Se-xual reproduction

Generally, reproduction is one of the main characteristics of a living organism and plants.

In conclusion, reproduction is a function that is peculiar to both living <u>plants</u> and organisms.

Read more on reproduction here: brainly.com/question/2538465

4 0
2 years ago
HELP ASAP!!!
Bond [772]

Answer:

We are made of primitive cells

6 0
3 years ago
Read 2 more answers
Which one to choose ?(please tell me if u have trouble seeing)
Flura [38]
The best answer to choose would be — “Weak winds that blow for short periods of time with a short fetch.”

Few factors determinate size of surfing waves:

1The weaker the wind speed, the shorter the wave.

The shorter amount of time that the wind blows, the shorter the wave.


Concluding my statement, and in opposition to the answer, it is the stronger winds along with a long period of time those winds with a long fetch that will be able to make the biggest waves.
3 0
3 years ago
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