What is the method of action of aldehydes?

A) They disrupt cytoplasmic membranes.
B) They inhibit enzymes.
C) They damage nucleic acids.
D) They disrupt membranes and enzyme function.
E) They damage proteins and DNA.


E

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. Phylogenetic analyses of some vertebrate mineralcorticoid and glucocorticoid receptors and their ligands has suggested that the hormones evolved prior to their receptors. 2. Vasotocin is present in non-mammalian vertebrates and shares structural and functional properties with mammalian antidiuretic hormone and oxytocin. Through these similarities it has been suggested that vasotocin could be the ancestral precursor to the posterior pituitary hormone in vertebrates. 3. Vitamin D is a hormone produced in part by exposure to sunlight. 4. If blood sodium levels rise sharply above normal limits the heart will release more atrial natriuretic peptide.

Biology & Microbiology

Red light and phytochrome are involved in which of the following plant growth responses? Check all that apply.  

_____  thigmotropic responses _____  inhibition of seed germination _____    elongation of etiolated shoots _____  detection of crowding by neighboring plants

Biology & Microbiology

If you are blood type A,

a. your immune system will recognize blood cells with type B markers as foreign. b. you carry markers for type B blood. c. you can donate blood to a person with type O blood. d. you can receive blood from a person with type AB blood. e. none of these are true.

Biology & Microbiology

DNA primase

A. creates a short RNA primer that is complementary to a DNA template. B. creates a short DNA template that is complementary to an RNA primer. C. creates a short RNA primer that is complementary to an RNA template. D. creates a short DNA primer that is complementary to a DNA template. E. creates a short DNA primer that is complementary to an RNA template.

Biology & Microbiology