Rhodobacter and Roseobacter are two genera with a common ancestor in Alphaproteobacteria
Indicate whether the statement is true or false.
Answer: TRUE
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Eukaryotic cells
A. are more obviously compartmentalized than prokaryotes. B. usually have a single circular supercoiled piece of DNA. C. contain peptidoglycan in the cell wall. D. have the same size ribosomes as prokaryotes. E. usually have a single circular supercoiled piece of DNA AND contain peptidoglycan in the cell wall.
Which of the following statements is NOT
true?
a. All isotopes of an element have the same number of electrons. b. All isotopes of an element have the same number of protons. c. All isotopes of an element have the same number of neutrons. d. All radioisotopes are unstable. e. All isotopes of an element have the same atomic number.
In rivers and streams, the invertebrates that scrape algae off rocks are referred to as shredders
Indicate whether the statement is true or false
What are the classified as antioxidants
What will be an ideal response?