Which of the following bacteria play a role in infertility in cattle?

A. Campylobacter fetus subsp. venerealis
B. Campylobacter fetus subsp. fetus
C. Campylobacter rectus
D. Campylobacter concisus


Ans: A. Campylobacter fetus subsp. venerealis

Biology & Microbiology

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The ? helix contains ______________ amino acids residues per turn. One full turn of the ? helix is ______________ long

A. 5.4, 3.6 Å B. 36, 54 Å C. 3.6, 5.4 Å D. 5.4, 1.5 Å E. 3.6, 1.5 Å

Biology & Microbiology

Which of the following terms refers to the change in

relative day length? a. phytoerythrin b. phototropism c. photorhythmic d. photochrome e. photoperiodism

Biology & Microbiology

In recombinant DNA techniques, the gaps in the paired DNA fragments are closed by ____

a. restriction enzymes b. DNA ligase c. DNA polymerase d. DNA replicase e. reverse transcriptase

Biology & Microbiology

What type of tissue is bone and cartilage?

A. connective tissue B. muscle tissue C. nervous tissue D. epithelial tissue

Biology & Microbiology