Your biology teacher asks you to do the impossible, you must measure the diameter of one algae cell. you are about to turn in a blank lab report when you friend comes and says it's an easy task. at 40x your field of view is .50mm or 500um, if you look carefully you can see 15 algae cells spanning the field of view. the diameter of one algae cell is approximately
a) 0.03um
b) 1.50 um
c)3.00um
d)33.3um

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction