Biology, 30.01.2020 11:42 jasminevargasolea
What contributes the most to the mass of a plant? i. soil ii. oxygen iii. carbon dioxide iv. water
a. i only
b. ii only
c. i and iii only eliminate
d. iii and iv only
Answers: 1
Biology, 21.06.2019 20:00
What are two reasons for why a species might disappear from the fossil record?
Answers: 1
Biology, 22.06.2019 04:00
The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons
Answers: 1
Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Biology, 22.06.2019 14:30
Explain why scientists use the word dominant for certain traits.
Answers: 1
What contributes the most to the mass of a plant? i. soil ii. oxygen iii. carbon dioxide iv. water...
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