Ques: Q: Are zeroes that show only where the decimal point fall significant or not significant? Read this paragraph and choose the correct option from the provided answers: Zeros that show only where the decimal point falls are not significant. For example, the number 470,000 has just two significant figures (4 and 7). The zeros just show that the 4 represents hundreds of thousands and the 7 represents tens of thousands. Therefore, these zeros are not significant. Choices: - neither - sometimes significant - significant - not significant A:
Ans: not significant

Ques: Q: What determines your hair color trait? Read this paragraph and choose the correct option from the provided answers: There are variations in the traits of a population. For example, there are lots of variations in the color of human hair. Hair can be blonde, brown, black, or even red. Hair color is a trait determined by genes. Choices: - chromosomes - Heredity - cells - genes A:
Ans: genes

Ques: Q: Which inducer turns on the expression of the lac genes? Read this paragraph and choose the correct option from the provided answers: When lactose is available, a lactose metabolite called allolactose binds to the allosteric site on the repressor. This interaction causes a conformational change in the repressor shape and the repressor falls off the operator, allowing RNA polymerase to bind to the promoter and initiate transcription. Allolactose is called an inducer because it turns on, or induces the expression of the lac genes. Choices: - xerophyte - glucose - galactose - allolactose A:
Ans: allolactose

Ques: Q: What are a class of tetrapod vertebrates that produce amniotic eggs called? Read this paragraph and choose the correct option from the provided answers: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs. They include crocodiles, alligators, lizards, snakes, and turtles. The reptile class is one of the largest classes of vertebrates. It consists of all amniotes except birds and mammals. Choices: - mammals - amphibians - insects - reptiles A:
Ans:
reptiles