What is the theory of endosymbiosis?
What will be an ideal response?
The theory of endosymbiosis suggests that eukaryotes arose from a bacterial cell hosting several bacterial endosymbionts. Evidence is clear for this theory-mitochondria and chloroplasts still retain some of their own genetic information left over from their early days as new endosymbionts.
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Which is true of carbohydrates?
A. They may be part of the structure of bacteria. B. They may serve as a source of food. C. They contain carbon, hydrogen, and oxygen in a 1:2:1 ratio. D. They may be bonded to proteins to form glycoproteins. E. All of the choices are correct.
Lymphocytes are the cells primarily responsible for the adaptive immune responses
Indicate whether this statement is true or false.
the --- of life arises from the adaptations of species to different habitats over long spans of time
Fill in the blank(s) with the appropriate word(s).
The female reproductive system includes all
EXCEPT which of the following? a. clitoris b. vagina c. oviduct d. ovary e. mammary gland