*This question has been updated and has only one correct response. Which ONE of the following statements are true?

The replacement of hydrogen with a halogen would create which type of functional  group?

Why do we always see the same face of the Moon?

The view is looking down on the orbit of the Moon around the Earth. The Moon travels in its orbit and the Earth rotates in a counter-clockwise direction. The diagram is not to scale. Which position of the Moon (A-E) will show a waxing crescent phase?

For the picture here, what lunar phase is shown? Assume you are an observer in the northern hemisphere.

Suppose a star glows most brightly at wavelength [lam] nm. What is its temperature? Express your answer in Kelvins and round to the nearest whole number.

Choose the number that correctly completes the following sentence. Approximately ______% of feline mammary tumors are malignant.

A 12-year-old spayed female beagle was presented for evaluation of a movable 4 cm mass on her ventral neck. Cytology reveals a cell population consistent with thyroid carcinoma. The owners are willing to consider referral to an oncologist, but only if the prognosis is good. Which of the following should be told to the owners?

What is the recommended surgical “dose” for feline mammary carcinoma?

Under what circumstances might you recommend post-operative chemotherapy for a dog with mammary carcinoma?