I'm doing a lab report and am unsure which variables are independent, dependent, and controlled. my lab is due tomorrow i did a lab where i took four cups and filled them each with 1/2 cup of water. i left one cup of water untouched. with the rest, i added 1 tsp of salt into one, 2 tsp of salt into another, and 3 tsp of salt in the last one. i then put them in the freezer and checked every 15 minutes for four hours to see if salt affects how water freezes.

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

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.