What type of biological molecule is lactase? 

Which structure/s are only found in plant cells (Not in animal and/or bacterial cells) ? (select all that apply)

Surface tension is a direct result of: 

Read the lab description and answer questions 33-38 You are lactose intolerant.  You found an unlabeled container of milk in your fridge and you want to know if it is safe for you to use that milk on your cereal.  Unfortunately, you ran out of Lactaid tabs.   You happen to have a container of urinalysis strips in your medicine cabinet, but you’re not sure how old those strips are.  You decided to do an experiment on some known beverages in your fridge along with the unknown milk to see if it is safe for you to drink.  Your mom is a diabetic and there just happens to be a glucose solution in the refrigerator for emergencies.  Below is a table containing the results from your experiment. Sample Actual glucose content in mg/dL Water 0 Sprite 750 Diet Sprite 0 Bottled Starbucks Iced Coffee 1000 Gatorade 250 Glucose solution 750 Unknown Milk 750   What is your negative control?

_______________________ is the space occupied by an object or substance.

Read the lab description and answer questions 33-38 You are lactose intolerant.  You found an unlabeled container of milk in your fridge and you want to know if it is safe for you to use that milk on your cereal.  Unfortunately, you ran out of Lactaid tabs.   You happen to have a container of urinalysis strips in your medicine cabinet, but you’re not sure how old those strips are.  You decided to do an experiment on some known beverages in your fridge along with the unknown milk to see if it is safe for you to drink.  Your mom is a diabetic and there just happens to be a glucose solution in the refrigerator for emergencies.  Below is a table containing the results from your experiment. Sample Actual glucose content in mg/dL Water 0 Sprite 750 Diet Sprite 0 Bottled Starbucks Iced Coffee 1000 Gatorade 250 Glucose solution 750 Unknown Milk 750   Given these results, what can be concluded about the iced coffee?

Why does water becomes less dense as it reaches its freezing point (0oC)?

Shortly after you administer the medicine to your roommate, you discover that another student that went on the trip has come down with Malaria. They require different dosage, so the medicine you already made needs to be adjusted accordingly. How many mL of water would you need to make 60 mL of a of a 5 g/L solution using a 30 g/L stock solution? (Read carefully! Include the units in your answer)

Read the lab description and answer questions 1-7 Jill was tasked with determining which brand of pen is most likely to attract a termite. She selected 5 brands of black ink pen, Bic, Precision V5, Sharpie, Papermate, Pilot, plus a pencil. Jill knows from previous experience that the termites are attracted to ink from a black Bic pen and are not attracted to lead from a pencil. To complete the experiment Jill drew a 5 cm diameter circle with each pen and placed a termite 0.5 cm from each circle. She then gave the termite 30 seconds to find the circle and travel around the circle. Jill defined positive results as a termite finding the circle within 30 seconds and then following the circle at least half way around. A negative result would be a termite that was unable to find the circle within 30 seconds or a termite that found the circle but followed it for less than half the circle. Jill tested five termites on each brand of pen for a total of thirty termites. The results of Jill’s experiment are found in the table below. Table 1: Number of termites that found the black 5 cm diameter circle within 30 seconds and then followed the circle for at least half the total distance. Brand of pen Bic Precision V5 Sharpie Papermate Pilot Pencil # of termites 5 1 0 2 5 1   What is Jill’s hypothesis?

Match the following light microscope parts with their functions.