According to the theory of _____________, mitochondria in cells today are the descendents of aerobic prokaryotes that used oxygen to generate energy.A) endosymbiosis
B) ingestion
C) mutualism
D) parasitism

Answers

Answer 1

Answer: Answer: A. endosymbiosis

The theory of endosymbiosis states that mitochondria in cells are once the descendants of aerobic prokaryotes. These prokaryotes used oxygen in order to generate energy. The mitochondria and the chloroplast are among the most important organelles that support endosymbiosis.

Answer 2

Answer:

Answer:

Explanation:

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All cells contain ion pumps that use the energy of atp hydrolysis to pump ions across the plasma membrane. These pumps create an electrochemical gradient across the plasma membrane that is used to power other processes at the plasma membrane

Answers

Answer:

Facilitated diffusion

Explanation:

Facilitated diffusion pumps polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, cross the plasma membrane.
As sodium ion concentrations build outside the plasma membrane because of the action of the primary active transport process, an electrochemical gradient is created

Although a liver cell and a muscle cell in ahuman developed from the same single cell,
their appearance and functions are different.
This is because the liver cell
(1) contains different genes than the muscle cell
(2) expresses different genes than the muscle
cell
(3) destroys the muscle cell genes it contains
(4) lacks the genes found in muscle cells

Answers

Answer: The correct answer is-

(2) expresses different genes than the muscle cell.

Liver cell and muscle cell in human are developed from the same single cell but perform different functions that is they are specialized to perform particular function.

It is because there is differential expression of genes in these cells. In other words, specific genes are turned on to perform specific functions and other genes are turned off.

Gene expression means transcription ( formation of mRNA from DNA) and translation ( formation of protein from mRNA) of gene ( a DNA segment, which codes for particular protein) so as to form a specific protein or polypeptide.

The protein thus produced, provides specific function to the cell.

Thus, different genes are expressed in specialized cells ( such as muscle and liver cell), which enables them to perform specific functions.

(2)
expresses different genes than the muscle cell

How is human impact on the tundra and the rainforests similar?

Answers

The human impact on the tundra and the rainforests have been negative to say the least. The destruction of wild habitat and increased pollution due to logging, mining etc have negatively affected the animals living in that region. Deforestation and habitat loss due to farming and oil exploration has increased the pollution level in these regions.

80 POINTS GIVING BRAINLIEST QUESTION ATTACHED BELOW

Answers

Answer:

How will the changes to the geosphere affect the atmosphere hydrosphere and biosphere?

Hydrosphere causes erosion of geosphere through running water and precipitation. … Atmosphere gets water vapor from hydrosphere. Geosphere creates, destroys and keeps various biosphere places safe

Explanation:

Hydrosphere causes erosion of geosphere through running water and precipitation. … Atmosphere gets water vapor from hydrosphere. Geosphere creates, destroys and keeps various biosphere places safe

8. A narrow region between two air masses of different densities is a A. ridge. B. system. C. gulley. D. front.

Answers

The answer is d. front. A front is the narrow region between two air masses of different densities. The interaction of the air masses cause the mass that is less dense to rise. Once air rises it cools and condenses to form clouds and eventually leads to precipitation. Using cold fronts as an example, the denser mass of cold air forces the lighter warm air to rise.

What is granite made out of need help for power point!!!!!