Which of the following subatomic particle/charge pairing is correct?

A vitamin tablet has a mass of 1.2 g. What is the total mass of 15 tablets?

A chemical change always results in:

Round 0.07492 to one significant figure

Which state of matter has a definite volume but no definite shape?

Water (H2O) is classified as a:

Which of the following contains only exact values?

Please pick one of these to answer. Number it with #1 or #2 whichever you are answering. Do not skip this it is worth a lot of points1. Exobiology is the study of life on other planets. In recent years scientists have sent various spacecraft out into the galaxy in search of extraterresterial life. Assuming that all life shares common properties, what should exobiologists be looking for as they explore other worlds?2. Comparing a bacterium a salt crystal (NaCl) and a pine tree explain which of these is considered alive or not and state the specific reasons why it is considered alive or not. Address all 3.

PLEASE PICK ONE OF THESE TO ANSWER MAKE IT CLEAR WHICH YOU ARE ANSWERING. DO NOT LEAVE THIS BLANK PARTIAL CREDIT WILL BE AWARDED1. The protist Giardia intestinalis is the organism associated with water borne diarrheal diseases. Giardia is an unusual eukaryote because it seems to lack mitochondria. Provide two possible evolutionary scenarios or this in the context of endosymbiotic theory. 2. Trace the typical route for a secreted glycoprotein from DNA to secretion from the cell name ALL the organelles in the path and their functions.

By signing your name, date, and PSU ID # on the exam scratch paper, I acknowledge I am aware of the Penn State University policy concerning academic integrity and I attest that I have not violated the policy during this exam. Please complete this on a blank sheet of scratch paper to practice the Part 2 Scan and Upload for this exam.