Glucose is an important biomolecule. which of these statements is true regarding the movement of glucose into and out of cells?

a) v and vi
b) iv and vi
c) ii and iv
d) iii and iv

i. moves molecules from high to low concentration
ii. moves molecules with the concentration gradient
iii. does not require energy
iv. requires the use of a membrane protein
v. used to move small and/or nonpolar molecules
vi. used to move large and/or polar molecules

The offspring of a black cat and a white cat is a gray cat, it has the genotype bw if a black cat mates with a gray cat the chance that the offspring is white will be what percent?

Lumps of iron and manganese ore called can be harvested from the seafloor near underwater volcanoes.

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the correspondingbones in whales have very different shapes and proportions. however, genetic data suggest that all three kindsof organisms diverged from a common ancestor at about the same time. which of the following is the mostlikely explanation for these data? a) humans and bats evolved by natural selection, and whales evolved by lamarckian mechanisms.b) forelimb evolution was adaptive in people and bats, but not in whales.c) natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.d) genes mutate faster in whales than in humans or bats.e) whales are not properly classified as mammals.