Knowing the fact that around sixty percent of the human body is water, which consists of two hydrogen atoms and one oxygen atoms, and that other biomolecules like proteins also have oxygen atoms in their structure it's not a surprise that the percentage of oxygen in the human body mass is that high.
Even though there are two hydrogen atoms and only one oxygen atom in the water molecule, the oxygen atom has 16 times more mass than the hydrogen atom and therefore has a bigger contribution to the overall body mass.
Answer:
The correct answer is D: diploid phase
Explanation:
The essence of plant life is their characteristic property of alternation of generations. Each plant undergoes alternation of generations and produces haploid and diploid generations.
This property allows the plant to reproduce both sexually and asexually. Primitive plant species used to reproduce through spores and spent the majority of their life as haploid cells. These cells were called as spores and required only matter and energy to reproduce.
Modern plant species reproduce by using gametes and spent the majority of their life in diploid phase called diploid sporophytes.
Answer:
When you combine the science of recognizing deception with the art of looking, listening, you exempt yourself from collaborating in a lie.
Answer: ingestion of a cyanobacterium which remained intact and evolved into a chloroplast. Cyanobacteria evolved oxygenic photosynthesis.
Explanation: The eucaryote cell presents this picture.
An archaean cell ingested an aerobic bacterium which remained intact and the two co-evolved into cell plus mitochondria. A cell like this ingested a cyanobacterium which remained intact and evolved into a chloroplast. It is still unclear how the eucaryote nucleus, multiple chromosomes and membrane bound organelles, e.g. Golgi apparatus and endoplasmic reticulum evolved.