Ethanol (CH3CH2OH) is the alcohol found in beverages. It is oxidized in the body to acetaldehyde by the enzyme alcohol dehydrogenase. Methanol (CH3OH), also known as wood alcohol, is converted to formaldehyde by the same enzyme. Acetaldehyde is toxic, but formaldehyde is far more toxic to humans, which is why the ingestion of relatively small amounts of methanol can cause blindness or death. One treatment for mild methanol poisoning is the administration of ethanol. Why might a doctor choose this treatment?

TLS Online TPP Program

#Question id: 12098

#Unit 10. Ecological Principles

The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in  height; alpine plants are only several centimeters tall  while  those in  the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.

The morphological variation shown by Achillea lanulosa illustrates

TLS Online TPP Program

#Question id: 27973

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is responsible to Blocks electron transfer with in complex III from cytochrome b to cytochrome c

TLS Online TPP Program

#Question id: 1886

#Unit 4. Cell Communication and Cell Signaling

Dead Wuchereria bancrofti can cause:

TLS Online TPP Program

#Question id: 23872

#Unit 13. Methods in Biology

Genetic engineering is being used by the pharmaceutical industry. Which of the following is not currently one of the uses?

TLS Online TPP Program

#Question id: 26871

#Unit 10. Ecological Principles

gradual and continuous change in species composition and community structure over time is referred to as