A protist has a surface area-to-volume ratio of 5:1. A human intestinal cell has a surface area-to-volume ratio of 2:1. Which of the following statements is true?

What is the difference between a reflex and other actions in the body

Explain how hemoglobin works at the gills of a fish

Molecular data suggests that the lophotrochozoa is a new clade of bilaterally symmetric animals that originally included phyla separated by differences in body plan (those lacking a coelom, possessing a pseudocoelom, or possessing a true coelom).

Which of the following is a true statement? Fats contain half the amount of energy than carbohydrates because they have less bonds. Carbohydrates contain more energy than lipids because their bonds release more energy when broken.

All rodents are mammals and all canines are mammals. no canines are rodents and no rodents are canines. what hierarchy best captures this information?

Suppose a population of rabbits is introduced to an environment that has hot summers and extremely cold winters. Every winter, many rabbits die because of the cold and the lack of food. The rabbits have a range of ear sizes.

True or false: when individuals of a parent species are separated geographically, one population of separated individuals is more likely to acquire neutral mutations than the other.

What society needs were addressed by science in the ancient world?

Should the FDA should give Aquabounty permission to grow and sell transgenic salmon? Why or why not?

How do the number of chromosomes in a female scorpion's egg cells (gametes) compare with the number in her body (somatic) cells?