Rats deprived of food and water that are placed in a novel environment may choose to eat and drink first. explore the environment first. be too confused to do anything. defecate first. show obvious signs of distress.

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.