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-BARSIC- [3]
3 years ago
7

_______ are the proteins that DNA is wound around to form chromosomes.

Biology
1 answer:
Romashka [77]3 years ago
4 0
B. Histones is the correct answer.
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Glycolysis results in a net gain of ____ atp molecules.
il63 [147K]

Answer:

As glycolysis proceeds, energy is released, and the energy is used to make four molecules of ATP. As a result, there is a net gain of two ATP molecules during glycolysis.

Explanation:

two atp molecules

5 0
2 years ago
A glucose molecule is completely broken down to carbon dioxide and water in glycolysis and the citric acid cycle. True or False
lutik1710 [3]

Answer:

True

Explanation:

A glucose molecule enters glycolysis in the cytoplasm of the cell. The glycolytic reactions break down one molecule of glucose into two molecules of pyruvate. Each of the pyruvate molecules is then decarboxylated and is oxidized into acetyl CoA. Acetyl CoA enters Kreb's cycle. Acetyl CoA is completely broken down into CO2 and H2O in Kreb's cycle. In this way, glycolysis and Kreb's cycle break down the glucose molecule into CO2 and H2O in a stepwise manner.

3 0
3 years ago
Evidence suggests that first, ____________ were acquired when an aerobic bacterium was engulfed by larger cells and became mutua
leonid [27]

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
The bottleneck event that decimated the bison was caused by _______.
Whitepunk [10]
The answer is an overhunting.

<span>The bottleneck event means drastic reduction of the population size because of environment changes. The consequence of this is the reduction of genetic variation. The bison population is a good example of the population bottleneck. The bison population drastically reduced its size due to overhunting which culminated at the end of the 19th century, when bisons almost extinct. </span>
7 0
3 years ago
DNA and RNA are composed of units that are made up of
STatiana [176]
DNA<span> and </span>RNA,<span> are </span>made<span> from monomers known as nucleotides.</span>
4 0
3 years ago
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