This topic contains a solution. Click here to go to the answer

Author Question: How did plants and algae acquire their ability to photosynthesize? What will be an ideal ... (Read 111 times)

nenivikky

  • Hero Member
  • *****
  • Posts: 516
How did plants and algae acquire their ability to photosynthesize?
 
  What will be an ideal response?

Question 2

Although the soils of Central Asia's steppes are generally rich, much like those of the prairie lands of the U.S. Great Plains, a steppe environment differs from a prairie environment in its generally lower and more variable:
 
  A) winds
  B) temperature
  C) precipitation
  D) tornadoes



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

adf223

  • Sr. Member
  • ****
  • Posts: 304
Answer to Question 1

At some point during their evolutionary history, a eukaryote enveloped an oxygenic cyanobacterium without killing the cyanobacterium. The result was a eukaryotic cell structure with a photosynthesizing organelle called a chloroplast. The process is termed endosymbiosis. The evidence for this endosybiotic event comes from the close genetic relationship between chloroplasts and cyanobacteria.

Answer to Question 2

C



nenivikky

  • Hero Member
  • *****
  • Posts: 516

adf223

  • Sr. Member
  • ****
  • Posts: 304

 

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

For a complete list of videos, visit our video library