Eukaryotic flagella differ from prokaryotic flagella because only eukaryotic flagella
a. are used for cell motility.
b. facilitate chemotaxis.
c. facilitate phototaxis.
d. are long, whip-like structures.
e. contain microtubules.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

In which way are mercury and venus similar? they both rotate from east to west. they are both small and rocky. they both have thick atmospheres. they both are similar to earth in structure.