Your undergraduate colleague accidentally mislabels tissue samples taken from different parts of a rat. in order to correct his mistake, you make slides from each sample and stain all tissue red and all nuclei blue. upon analyzing one slide under a compound light microscope, you see many small reddish pink dots but no blue. this slide must be a sample of tissue from the rat's select one: a. lungs b. thymus c. liver d. blood e. striated muscle

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

Do plant cells perform cellular respiration?