John and Alexandria are married and they have two children,…

John and Alexandria are married and they have two children, aged 2 and 5. They pay Alexandria’s 22 year old sister $150 per week or $7,200 for the year to take care of their children for 48 weeks each year. John works full time and earns an annual salary of $90,000. Alexandria works part time, earning an annual salary of $28,000. She also goes to college part time during the fall semester, for a total of 17 weeks, or 4 months, each year. Which of the following is correct with respect to John and Alexandria’s ability to claim child care expenses? Show your work for full marks

What is the purpose of oxygen in aerobic respiration? A) Oxy…

What is the purpose of oxygen in aerobic respiration? A) Oxygen accepts electrons at the end of the electron transport chain B) Oxygen is necessary to carry away the waste carbon dioxide C) Oxygen is used in the formation of sugar molecules D) The oxygen molecule becomes part of the ATP molecule

Which of the following statements regarding enzymes is true?…

Which of the following statements regarding enzymes is true?   A) Enzymes increase the rate of a reaction by making the reaction more exergonic.   B) Enzymes increase the rate of a reaction by lowering the activation energy barrier.   C) Enzymes increase the rate of a reaction by reducing the rate of reverse reactions.   D) Enzymes change the equilibrium point of the reactions they catalyze.

Which of the following statements about cellular respiration…

Which of the following statements about cellular respiration is correct?   A) Most CO2 produced during cellular respiration is released from glycolysis  B) Protons are pumped through ATP synthase by active transport   C) The final electron acceptor of the electron transport chain is NAD+   D) The final electron acceptor in the electron transport chain is oxygen

All of the following are true statements about meiosis in ma…

All of the following are true statements about meiosis in mammals EXCEPT: A) It serves as a factor in bringing about variation among offspring. B) It follows DNA replication. C) It occurs only in reproductive structures. D) It produces cells with the haploid number of chromosomes. E) It produces four genetically identical gametes.