Explain the times, periods, and events that refer to life's evolution leading to human life on Earth
What will be an ideal response?
Around 4.6 billion years ago, Earth was formed. There is evidence of single-celled ocean-dwelling organisms around 3.4 billion years ago. Eventually, the process of evolution gave rise to complex multi-cellular life-forms. Around 540 million years ago, almost 3 billion years after the earliest sighs of life, fossils indicate that life suddenly developed into a wide variety of complex forms. This sudden increase in complexity is known as the Cambrian explosion. Humanoid creatures have walked on Earth for about 4 million years.
You might also like to view...
When Louis Kunkel discovered the gene associated with Duchenne's Muscular Dystrophy in the 1980s, he then needed to determine _____
a. the MIM number of the gene b. whether the gene was linked to blood type c. how the mutant gene produces the disease phenotype d. whether to use positional cloning to clone the gene e. how many copy number variants were present in the gene
Where are sugars formed in the chloroplasts?
a. on the outer membrane b. on the inner membrane c. in the thylakoid compartment d. in the stroma e. within the thylakoid membrane
An organic nutrient that cannot be synthesized by the organism and must be provided is called a/an
What will be an ideal response?
Caulobacter produce free-swimming ________ cells for dispersal that must differentiate into _______ cells for reproduction
a. stalked / swarmer b. peritrichous / planktonic c. swarmer / stalked d. persister / dormant