About 1,500,000 bacteria are found in 1 milliliter of water of coastal ocean. How many bacteria will be there in 100 milliliters of water?
a-1.5*10^4
b-1.5*10^5
c-1.5*10^6
d--1.5*10^7
e-1.5*10^8
Answer: e-1.5*10^8
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One adaptation of insects that is specific to this group among all arthropods is:
A. cephalization. B. hard exoskeletons. C. segmentation. D. specialized mouthparts. E. wings.
What is the ratio of phenotypes in the offspring produced by the cross Aa × Aa? Assume complete dominance for the trait
A) 75% dominant:25% recessive B) 50% dominant:50% recessive C) 25% dominant:75% recessive D) 100% dominance E) 100% recessive
During the pre-embryonic period, a single sperm passes through the zona pellucida. In the vast majority of cases, where does this process occur?
A) in the oviduct (fallopian tube) B) in the placenta C) in the uterus D) in the ovary
Answer the following questions true (T) or false (F)
1. Cells harvest energy from nutrients by stripping electrons from them. In other words, the nutrients are oxidized. 2. By the end of the Krebs cycle, every carbon originally in glucose is converted into carbon dioxide. 3. The main energy benefit of the Krebs cycle is the mass production of both ATP and the reduced factors NADH and FADH2.