Which of the following is not used to treat malaria?
A. Quinine
B. Chloroquine
C. Meflaquine
D. Metronidazole
E. Primaquine
Answer: D
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What endogenous process helps plants to keep their movements and other responses synchronized with the environment?
A. purine monitoring B. solar tracking C. a circadian clock D. auxin cycling E. gravitropism
What are leaf veins?
a. vascular bundles of leaves b. photosynthetic cells of leaves c. sclerenchyma cells of leaves d. palisade mesophyll of leaves e. spongy mesophyll of leaves
Cells lining parts of the respiratory tract have numerous short filamentous structures known as ________ on their surfaces, which beat in unison and move materials through the airways
Fill in the blank(s) with correct word
In which of the following processes do the chromosome and its homologous partner exchange corresponding pieces of DNA?
A. Crossing over B. Gametes C. Alleles D. Haploid E. Germ cell