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stich3 [128]
3 years ago
6

Chromosomes are strands of dna wound around some proteins called

Biology
2 answers:
Taya2010 [7]3 years ago
7 0
<span>This DNA is tightly packed into structures called chromosomes, which consist of long chains of DNA and associated proteins. In eukaryotes, DNA molecules are tightly wound around proteins - called histone proteins - which provide structural support and play a role in controlling the activities of the genes.</span>
madam [21]3 years ago
6 0
The proteins are called Histone proteins. Chromosomal DNA is packaged such that the strands of DNA are wound around histone proteins and fold into complex ways to form chromosomes. The histone proteins are positively charged proteins that strongly adhere to negatively charged DNA and form complexes called nucleosomes. Each nucleosome is composed of double-helical DNA wrapped. 
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Evidence suggests that first, ____________ were acquired when an aerobic bacterium was engulfed by larger cells and became mutua
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Answer:

1. Mitochondria

2. Chloroplast

3. the formation of eukaryotic cells

4. DNA

Explanation:

The theory of endosymbiosis was proposed by the Lynn Margulis in 1967 which suggested that the eukaryotic organelles like the mitochondria and chloroplast evolved when another prokaryotic cell engulfed the prokaryotic bacteria.

The mitochondria were formed when the chemosynthetic bacteria were engulfed by the bacteria and the engulfed bacteria formed a symbiotic relationship. Similarly, the chloroplast was originated in the same way when the photosynthetic bacteria were engulfed by another prokaryote.

The evidence which supports their ar:

1. The same size of the organelles to the bacteria

2. The presence of the circular DNA of the organelles like bacteria  

3. The similarity in the 30s and 70s ribosomal subunits.

7 0
3 years ago
Read 2 more answers
examine the diagram below, explain the path a newly formed polypeptide leaving a ribosome may take as it is modified or packaged
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After translation of the polypeptide in the ribosome, the polypeptide enters the cisternae of the rough endoplasmic reticulum. Here, the folding of the polypeptide begins with the aid of chaperons proteins. At the end of the RER, vesicles with the completely folded protein bud off and enters the Golgi apparatus where the proteins are transported to its destination.






5 0
4 years ago
The land edge that is affected by marine processes is known generally as the?
konstantin123 [22]

The land edge that is affected by marine processes is known generally as the coast

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  • Despite making up only around 8% of the land on Earth, coastlines contain about 26% of all biological diversity.
  • This wonderful environment, which is home to many different species of natural communities, is home to seabirds, clams, crabs, starfish, anemones, fish, kelp, and marine mammals, among many other creatures.
  • Though it can also be a tough and challenging environment, since it is frequently altered by erosion and tides as well as pounded by waves and sea spray. Typically, there are three types of coasts: rocky, sandy, and muddy.

learn more about coast here: brainly.com/question/2487523

#SPJ4

5 0
2 years ago
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Naya [18.7K]
The answer to this question would be: antibody

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In mismatch transfusion, the receiver recognizes transfused blood cell as foreign material so it was making antibody to fight it.
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3 years ago
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