Which of the following statements helps support the endosymbiotic theory?Choose 1 answer:
A
All cells contain ribosomes that conduct protein synthesis.
B
Cells contain genetic information in the form of DNA.
If isolated from a eukaryotic cell, mitochondria can no longer survive and reproduce on their
own.
If isolated from a plant cell, a chloroplast can survive and reproduce on its own.
Answers
Answer:
C. If isolated from a eukaryotic cell, mitochondria can no longer survive and reproduce on their own.
Explanation:
The endosymbiotic theory proposes that early eukaryotic cells evolved from endosymbiotic interactions among prokaryotic cells. This theory states that mitochondria and chloroplasts were once primitive bacterial cells that were ingested by large anaerobic prokaryotic cells, and then these cells benefited from living and working together. The most important lines of evidence that support this theory are that mitochondria and chloroplasts contain their own genetic material (circular DNA) and their own protein biosynthesis machinery (ribosomes).
Final answer:
The statement supporting the endosymbiotic theory claims chloroplasts can survive and reproduce on their own when isolated from a plant cell. This suggests these organelles, once independent prokaryotic cells, retain certain autonomous features despite integration into the eukaryotic cells.
Explanation:
The endosymbiotic theory proposes that certain organelles in eukaryotic cells, such as mitochondria and chloroplasts, originated as independent prokaryotic cells that were engulfed by a host cell. This event allowed a symbiotic relationship to develop, which subsequently led to the development of eukaryotic cells. The option that best supports this theory is: 'If isolated from a plant cell, a chloroplast can survive and reproduce on its own.'
This statement suggests that chloroplasts, like the bacteria from which they evolved, maintain some ability to live independently. Yet, although they contain their own DNA and ribosomes (symbols of their independent past), they are no longer 'free-living'. Similarly, mitochondria are also likely to have been independent entities because they too contain their own DNA and ribosomes. However, having been integrated into the host cell, they can no longer survive on their own, contrary to what might be inferred from the third option. The first and second options simply represent characteristics of all cells and provide no specific support for the endosymbiotic theory.
Learn more about Endosymbiotic Theory here:
#SPJ3
Related Questions
Someone give answers to these they are both wrong
What happens to an enzyme after it catalyzes a chemical reaction?
Which line from Chaucer’s “General Prologue" to The Canterbury Tales is a reference to the feudal social structure of medieval England?A. Full worthy was he in his liege-lord's war, B. And therein had he ridden (none more far) C. As well in Christendom as heathenesse, D. And honoured everywhere for worthiness. E. At Alexandria, he, when it was won;
What about Earth allows it to maintain bodies of water? a)moderate tempatures b)comet crashes c)tides d)mountains
geotropism
seismonasty
phototropism
Answers
B) Acne
C) Urticaria
D) A fungal infection
Answers
Final answer:
The raised red spots are most likely urticaria, a skin condition characterized by itchy red welts caused by an allergic reaction.
Explanation:
The raised red spots on the hands, arms, and face of the 8-year-old student who was stung by a wasp are most likely urticaria.
Urticaria, also known as hives, is a skin condition characterized by itchy red welts or patches that can appear and disappear quickly. It is usually caused by an allergic reaction to certain substances, such as insect bites or stings.
In this case, the red spots are a result of the release of histamine and other mediators in response to the wasp sting, leading to the dilation of blood vessels and fluid leakage.
Learn more about Urticaria here:
#SPJ2
Answers
Final answer:
Carrying capacity in biology refers to the maximum population size that an environment can sustain indefinitely without the environment becoming degraded. It's the number of individuals that the available resources within a particular environment can support. If the population exceeds this number, the environment may become degraded.
Explanation:
The carrying capacity of a population in biology refers to A) Its maximum population size that an environment can sustain indefinitely without significant degradation of that environment. In other words, carrying capacity is the number of individuals that a specific environment's resources can support without causing negative impacts on the environment. For instance, if there are too many deer in a forest and food resources become scarce, the forest has reached its carrying capacity for deer. If the population continues to increase, the environment will become degraded, and the health of the deer population will decrease. Therefore, the accurate answer is A) Its maximum population size to remain stable.
Learn more about Carrying Capacity here:
#SPJ11
Answers
Answer:
Islam was the dominant religion in West Africa in 1500.
Explanation:
- From 639-708 C.E, Arab Muslims captured North-Africa.
- Arab Muslims want to bring Islam to west Africa too, but they knew it would be quite hard to cross the Sahara desert.
- Islam soon reached Ghana through Muslim missionaries and traders.
- Ghana's king did not convert to Islam but he allowed Muslims to build homes and mosques within his kingdom.
- Muslim merchants and traders colonized in "Kumbi" which were the huge market place of the time.
- soon the Muslim community grew and they had 12 mosques.
O Foraging
O Nomadism
O Sedentarism
Answers
Answer:
Sedentarism
Explanation:
Final answer:
The result of agriculture is the transition from a nomadic lifestyle to a settled lifestyle.
Explanation:
Agriculture is the practice of cultivating plants and rearing animals for food, fiber, medicinal plants, and other products used to sustain and enhance human life. It had a significant impact on human societies, resulting in various changes.
One of the major results of agriculture was the transition from a nomadic lifestyle to a settled lifestyle. Before the development of agriculture, early humans relied on foraging and hunting for their sustenance. However, with the discovery of agriculture, people started cultivating crops and domesticating animals, which allowed them to establish permanent settlements.
This transition from nomadism to sedentarism was a crucial turning point in human history. It led to the development of permanent settlements, the growth of population, and the establishment of complex societies. With the ability to produce surplus food, people no longer needed to constantly move in search of resources. This stability allowed for the development of trade, specialization of labor, and the rise of social hierarchies.
Learn more about result of agriculture here:
#SPJ14