A sperm cell from an organism is represented in the diagram below.
Head
Acrosome
Nucleus
- Middle piece
Mitochondria
Flagellum
Which statement regarding this sperm cell is not
correct?
(1) The acrosome contains half the normal num-
ber of chromosomes.
(2) Energy to move the flagellum originates in
the middle piece.
(3) The head may contain a mutation.
(4) This cell can unite with another cell result-
ing in the produetion of a new organism.

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen