Question

can you answer these
Consider this microscopic image of bacteria.

Rod-shaped bacteria is shown.

Based on its shape, what is most likely the form of this bacteria?
coccus
staphus
bacillus
spirillum

Which scientist developed the idea that microorganisms can cause diseases?
Paul Ehrlich
Anton van Leeuwenhoek
Louis Pasteur
Alexander Fleming

Which type of bacteria can be found in pairs, chains, squares of four, cubes of eight, or grapelike clusters?
coccus
bacillus
spirillum
pili

Which scientist devised tests that helped confirm that bacteria and other microorganisms cause a variety of diseases?
Robert Koch
Anton van Leeuwenhoek
Louis Pasteur
Alexander Fleming

Which mode of genetic recombination is matched correctly with its description?
transduction—virus transfers genes from one bacteria to another
conjugation—involves splitting of one cell and results in two identical cells
binary fission—requires direct cell-to-cell contact of bacteria
transformation—uses a pilus to transmit genetic information between bacteria

Answer 1

1) Rod-shaped = bacillus.

2) Idea that microorganisms cause disease = Louis Pasteur.

3) Pairs, chains, fours, eights or grapelike clusters = coccus.

4) Devised tests confirming microbes cause disease = Robert Koch.

5) Correct match = transduction — a virus (bacteriophage) transfers genes from one bacterium to another.