The best answer is B.
The endosymbiotic theory states that mitochondria and chloroplasts have striking similarities to bacterial cells:
1. they have their own DNA, which is separate from the DNA found in the nucleus of the cell.
2. Both organelles use their DNA for to produce many proteins and enzymes required for function.
3. They are both surrounded by a double membrane.
4. They reproduce just the way bacteria do, replicating their own DNA and directing their own division.
Answer:
high point of a wave = 5
low point of a wave = 4
time between the crest of one wave and the crest of the next wave = 2
vertical distance between a trough and a crest = 1
distance between two crests or two troughs = 3
Answer:
Producers!
Explanation:
Autotrophs are the foundation of every ecosystem on the planet. That may sound dramatic, but it's no exaggeration! Autotrophs form the base of food chains and food webs, and the energy they capture from light or chemicals sustains all the other organisms in the community. When we're talking about their role in food chains, we can call autotrophs producers.
Answer:
The DNA must be copied so there is a full set of DNA to pass on to each daughter cell.
Cells with half the original number of chromosomes. So the answer is C.
