Which base in an anticodon will pair with the base adenine in a codon?
A. uracil
B. guanine
C. thymine
D. cytosine
Answer: A
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In meiosis, recombination occurs _______________
A. during prophase I and II and involves exchange of chromosome fragments between all four chromatids B. only during prophase I and involves exchange between chromatids of homologous chromosomes C. only during prophase I and involves exchange of chromosome fragments between sister chromatids D. during prophase I and II and involves exchange of chromosome fragments between sister chromatids
When the brain's normal electrical activity becomes chaotic, which condition may develop?
a. epilepsy b. Parkinson's disease c. Creuzfeldt-Jakob disease d. multiple sclerosis e. meningitis
Which of the following processes is used by plants to generate gametes from gametophytes?
a. conjunction b. mitosis c. meiosis d. transduction
A nursing infant is able to obtain disease-fighting antibodies, which are large protein molecules, from its mother's milk. These molecules probably enter the cells lining the baby's digestive tract via _____.
A. osmosis B. active transport C. endocytosis D. passive transport