The smallest unit that has all of the characteristics of life is the
(a). cell.
(b). tissue.
(c). organ.
(d). organ system.
(e). organism.
Answer: (a). cell.
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Environmental factors that might cause or contribute to schizophrenia include
A) infection by smallpox virus. B) maternal malnutrition. C) excess oxygen to a fetus. D) maternal use of anti-depressants.
Which of the following statements accurately describes Gregor Mendel?
A. He conducted many preliminary studies with various animals and plants. B. He kept very detailed records of his research. C. He had a strong background in mathematics. D. He was very deliberate and followed the scientific method closely while doing his research. E. All of the statements accurately describe Gregor Mendel.
The ABO blood types have how many different genotypes?
a. 4 b. 6 c. 8 d. 12 e. 16
Which of the following is involved in translation?
A) rRNA only B) tRNA only C) mRNA only D) both mRNA and tRNA E) mRNA, rRNA, and tRNA are all involved.