Smallpox has been eradicated, but not malaria or cholera.
Which statements correctly explain this?
1 Cholera pathogens in the intestines are not destroyed by antibiotics.
2 Plasmodium antigens change during the life cycle.
3 Smallpox antigens remain stable.
4 Vaccines only work against viruses.
A. 1, 2 and 3
B. 1, 2 and 4
C. 1, 3 and 4
D. 2, 3 and 4
Select your answer:
Topics:
Muscle & Nerve Tissue Nutrition and Calorific Value Composition Of Human Blood Hematology Lab Values Cardiovascular Physiology - Function Biotechnology and Genetic Engineering Thyroid Gland Cell Cycle Problems Cardiovascular System Anatomy Child Growth and Development Digestive System and Nutrition Musculoskeletal Disorders Population Ecology Aseptic Technique & Sterile Comp Review Compact BoneOther quiz:
Biotechnology › ViewWhat happens in the Denature step of PCR?
A. The DNA nucleotides are broken apart.
B. The base-pairing rules for DNA are reversed.
C. The double-stranded DNA is separated into two single strands of DNA.
D. The DNA is returned to its natural setting.
Health Systems › View
Your health insurance has a $2000 deductible and a $100 per day co-payment for hospital stays. You get sick and are hospitalized for 2 days. The bill comes to $4000. How much of this bill do you have to pay?
A. $2,000
B. $4,000
C. $2,200
D. $1,800