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Vilka [71]
2 years ago
8

The concept presented to explain the origin of eukaryotic cells, namely that a bacterial cell parasitized another descendant cel

l of the last common ancestor and eventually became a permanent part of that cell as its mitochodrion or chloroplast, is called
Biology
1 answer:
son4ous [18]2 years ago
5 0

The concept presented to explain the origin of eukaryotic cells form a bacterial cell parasitized by another descendant cell is called endosymbiosis.

<h3>What is the endosymbiotic theory?</h3>

The endosymbiotic theory is a well-sustained theory in biology about the origin of eukaryotic cells.

According to this theory, eukaryotic cells emerged by endosymbiosis between primitive eukaryotic cells and bacteria that converted into mitochondria and chloroplast organelles.

The endosymbiotic theory is well sustained in several scientific observations such as the existence of DNA in mitochondria and chloroplasts that is independent of nuclear DNA, the size of ribosomal units, etc.

In conclusion, the concept presented to explain the origin of eukaryotic cells form a bacterial cell parasitized by another descendant cell is called endosymbiosis.

Learn more about endosymbiosis here:

brainly.com/question/1698852

#SPJ1

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Imagine that a toxin is introduced to the body and inhibits the establishment of the proton gradient in the intermembrane space.
jarptica [38.1K]

Answer:

ATP synthase would be unable to produce ATP

Explanation:

ATP synthase depends on the proton gradient in the intermembrane space to enable it to produce ATP. As a consequence of this, the toxin will make it inactive. Oxidative phosphorylation is now inhibited in this case, as opposed to substrate-level phosphorylation.

Pyruvate is a product of glycolysis, and it will not be affected by a toxin. NADH is very important in the establishing of a proton gradient, so it is expected that it would be unable to be oxidized due to the toxin. Protons produced in the conversion of NADH to NAD+ actually establish the proton gradient. If the gradient is absent, NADH is then not likely to be oxidized.

3 0
3 years ago
Define fossil include two types of preserved clues in your definition
vagabundo [1.1K]

Answer:

A fossil is remain or impression of dead plants or animals which have lived thousands of years ago it can also be described as  any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants

Types of Fossils. Fossilization can occur in many ways. Most fossils are preserved in one of five processes preserved remains, permineralization, molds and casts, replacement, and compression.

i hope this is helpful

if it is please mark me as brainliest :)

3 0
3 years ago
Imagine that a team of scientists test a certain hypothesis, and the experimental results show that it is false. How will
tekilochka [14]

Answer:

the results will likely be recording and could inspire a new hypothesis.

Explanation:

7 0
2 years ago
Learning Task 1: WORD UP
HACTEHA [7]

The words for the descriptions are food chain, trophic level, energy pyramid, high diversity, low diversity, etc. respectively.

<h3>Ecology</h3>
  • The feeding relationship that exists among organisms is termed the food chain.

  • Each step in the transfer of energy and matter in a community is termed the trophic level.

  • A community or group of living organisms that live in and interact with each other in a specific environment is termed an ecosystem.

  • A diagram that compares the energy used by producers, primary consumers, and other trophic levels is known as the energy pyramid.

  • An ecosystem with a high number of species is said to be of high diversity.

  • An ecosystem with a few prominent species and a low number of other species is said to be of low diversity.

  • Organisms that feed on and break down organic matter are said to be decomposers.

  • Organisms that can make their own food in the ecosystem are termed, producers.

  • Animals that feed on flesh are called carnivores.

  • A system of interlocking and interdependent food chains is called a food web.

More on ecology can be found here: brainly.com/question/13046612

#SPJ1

7 0
1 year ago
Dr. Naskrecki believes that scientists will eventually identify between 50,000 and 100,000 species in
Doss [256]

Answer:

The reason why Dr Naskrecki thinks he suspects there are so many more than the 2,829 species they have already identified living in the park is because there are many species that has been identified in the world because humans haven’t gotten to most parts of the earth which makes it a lot undiscoverable.

Another one is that the species multiply rapidly and easily.

8 0
3 years ago
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