From the 1500s-1800s, European temperatures dropped dramatically on average for many decades, creating a "little ice age." Say that average temperatures then were 5 degree C lower than before. Which biome was most likely to replace habitat previously in northern coniferous forest?
A) tropical forest
B) temperate broadleaf forest
C) northern coniferous forest
D) tundra
E) desert
Ans: D) tundra
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The perceived flavor of food depends on both sense of taste and smell. The sensory receptors of olfaction are _________________ and those of taste buds are ______________
A. chemoreceptors; thermoreceptors B. mechanoreceptors; chemoreceptors C. nociceptors; thermoreceptors D. chemoreceptors; also chemoreceptors
Answer the following statements true (T) or false (F)
1. Most oncogenes encode proteins that function in cell growth signaling pathways. 2. Myc genes tend to be overexpressed in only a few forms of cancer. 3. p53 is a tumor suppressor gene that acts as a sensor of DNA damage. 4. Certain types of cancer are caused by viruses.
Why are viruses not considered to be living organisms?
What will be an ideal response?
Which STD is caused by a parasite?
a. HPV b. trichomoniasis c. gonorrhea d. syphilis e. chlamydia