During DNA replication, deoxyribonucleosides are added to the 5' end of Okazaki fragments and to the 3' end of the leading strand.
Answer the following statement true (T) or false (F)
False
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Which of the following statements about insect hormones is false?
A. High levels of circulating juvenile hormone inhibit molting. B. Ecdysone is released from the prothoracic gland and stimulates molting. C. PTTH stimulates the release of ecdysone to trigger molting and metamorphosis. D. In the absence of juvenile hormone, an insect will metamorphose into the adult form. E. None of the answer options is false.
Every year the common flu vaccine is designed to protect against three different strains of the influenza virus. Why do scientists typically have to make a new vaccine every year?
A. Our bodies develop resistance to the vaccine and it becomes less effective. B. The virus develops resistance to the vaccine. C. The virus can mutate into new strains. D. People change their habits each year and become susceptible to different strains of the virus. E. The common influenza virus can come from many species of animals including cats and dogs.
Which of the following are synonymous codons?
A) UUC and UUG B) UCC and UAC C) CGA and AGA D) AGG and AGC E) AAG and AAC
Animals directly evolved from
A) plants. B) protists. C) fungi. D) bacteria.