In which of the following oceanic regions do gyres move in a clockwise pattern?
What will be an ideal response?
North Atlantic
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When do sister chromatids separate?
A) meiosis I and meiosis II B) meiosis I and mitosis C) mitosis and cytokinesis D) meiosis II and mitosis
Choose the best explanation as to why both consumers and producers perform cellular respiration
A) Although they may obtain their sugars in different ways, both consumers and producers rely on cellular respiration to make ATP. B) Both consumers and producers perform cellular respiration to produce the sugars that will be "burned" to fuel the energy of life. C) Both consumers and producers perform cellular respiration to produce the oxygen necessary to sustain life. D) Both consumers and producers perform cellular respiration to produce the heat necessary to sustain life.
RNA is a multifaceted molecule and key component to the success of life. Which of the following statements about RNA is most accurate?
a. RNA is incapable of storing information, but it is vital in converting the information embedded in DNA to useful proteins. b. The world was most likely filled with DNA-life first, which evolved to produce RNA-life. c. There is no link between RNA and the possibility of it being a precursor to cellular life. d. It is possible that this complex molecule could have been a self-replicating system. e. RNA is an enzyme.
A bird sanctuary sometimes takes over the care of eggs or chicks of an endangered duck species if the parents are killed. They are sometimes able to use mothers of farm ducks to cross-foster the chicks, but it doesn't always work. Looking at the following data table, what is the critical period for imprinting in this species? (Note: DAH stands for "days after hatching".)Number of chicksAge of chicks when paired with foster motherSuccessful imprinting?(assessed at 14 DAH)13eggs (0 DAH)yes71 DAHyes113 DAHyes58 DAHno911 DAHno
A. The critical period ends sometime between 1-3 DAH. We can not determine from this data when the critical period begins. B. The critical period ends sometime between 3-8 DAH. We can not determine from this data when the critical period begins. C. The critical period extends from 3-8 DAH. D. The critical period extends from 1-3 DAH.