True or false: Humans have a negative impact on all species with which they interact

A. true B. false


Answer: B

Biology & Microbiology

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A class of mutations that results in multiple contiguous (side-by-side) amino acid changes in proteins is probably caused by which one of the following types of mutations?

A) base analog B) transversion C) recombinant D) frameshift E) transition

Biology & Microbiology

Which of the following would be secreted across the tubule?

a. sodium ions b. vitamins c. creatinine d. carbon dioxide e. glucose

Biology & Microbiology

The mitotic cell cycle results in the production of ________

A) four cells, each with the same amount of genetic material and the same genetic information B) two cells, each with the same amount of genetic material but with different genetic information C) two cells, each with the same amount of genetic material and the same genetic information D) four cells, each with the same amount of genetic material but with different genetic information

Biology & Microbiology

What is another term for an identifiable structure known as the microtubule organizing centre (MTOC) of an animal cell?

a. a cell plate b. a centrosome c. a kinetochore d. a centromere

Biology & Microbiology