Question

life science 2 thx a lot

1. Reservoirs of infection

A. refer to the normal host of the pathogen

B. include cats, birds, rodent, livestock, and insects

C. have spread diseases such as HIV, Ebola, Swine flu, and SARS

D. all of the above

2. Viral epidemics began around 12,000 years ago

A. when humans lived in isolation

B. when humans developed more densely populated agricultural communities

C. when human became hunter-gatherers

D. when antibiotics were discovered

3. The number of items retained in short-term memory can be increased through the process of chunking, or grouping several items together.

true

false

4. Reducing water levels, as a result of climate change, can compromise crop generation and grazing land

A. directly

B. indirectly

C. both directly and indirectly

5. The closest humans have come to building a functional model of the human brain are cortical simulations.

true

false

6. The ability of a virus to infect a cell relies on

A. temperature

B. pH

C. the interaction between surface proteins of the virus and host

D. enzyme-substrate interactions

7. Data specifying the information state of the neuronal network may be copied as a computer file from the brain and re-implanted into a different physical form.

true

false

8. In the respiratory system, aging

A. reduces the number and function of cilia in the lungs

B. lessens the ability of the lungs to transfer oxygen to the blood

C. blunts the cough reflex

D. diminishes the inhale/exhale volume of the lungs

E. all of the above

9. The nervous system is affected by aging due to

A. loss of white matter

B. increase lag time of firing neurons

C. increased susceptibility to illness

10. Rapid mutation rates allow for viruses to

A. overcome host-specific immunological response

B. more effective killing of the reservoir

C. live independent of cells

D. maintain homeostasis

11. Making Mars habitable for human life can be accomplished by

A. hydroponics

B. aquaponics

C. terraforming

D. gardening

12. Newer, deadlier viruses, such as HIV, Ebola, Zika, and SARS

A. all came from bats

B. all came from the rainforest

C. kills all new hosts

D. are transmitted by ticks

Answer 1