Biology, 30.04.2021 03:20 cathydaves
Two test tubes were filled with a solution of bromthymol blue. A student exhaled through a straw into each tube, and the bromthymol blue turned yellow. An aquatic green plant was placed into each tube, and the tubes were corked. One tube was placed in the dark, and one was placed in direct sunlight. The yellow solution in the tube in sunlight turned blue, while the one in the dark remained yellow. Which statement best explains why the solution in the tube placed in sunlight returned to a blue color? Explain answer?
A. Oxygen was produced by photosynthesis.
B. Carbon dioxide was removed by photosynthesis.
C. Carbon dioxide was produced by respiration.
D. Oxygen was removed by respiration.
Answers: 1
Biology, 21.06.2019 18:00
Which flexible structure that supports the nerve cord and led to the backbone
Answers: 3
Biology, 22.06.2019 00:20
6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?
Answers: 1
Biology, 22.06.2019 05:40
Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine
Answers: 1
Biology, 22.06.2019 12:10
What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?
Answers: 1
Two test tubes were filled with a solution of bromthymol blue. A student exhaled through a straw int...
Mathematics, 01.03.2020 05:41
Chemistry, 01.03.2020 05:41
Mathematics, 01.03.2020 05:41
Mathematics, 01.03.2020 05:41
English, 01.03.2020 05:41
Mathematics, 01.03.2020 05:41
Mathematics, 01.03.2020 05:41
English, 01.03.2020 05:41
Mathematics, 01.03.2020 05:42
Mathematics, 01.03.2020 05:42
English, 01.03.2020 05:43
English, 01.03.2020 05:43