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.

Biology & Microbiology

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Lymphocytes are the cells primarily responsible for the adaptive immune responses

Indicate whether this statement is true or false.

Biology & Microbiology

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).

Biology & Microbiology

The female reproductive system includes all

EXCEPT which of the following? a. clitoris b. vagina c. oviduct d. ovary e. mammary gland

Biology & Microbiology

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.

Biology & Microbiology