Am what animal sperm cells move on so that they can reach an egg surface hairs rigid walls muscle flagella

The correct answer is: flagella.

Animal sperm cells are motile meaning that they move via flagella and require a water medium in order to swim toward the egg for fertilization. This process requires energy which can be derived from sugar metabolism. Usually, sperm cells are uniflagellated (with one flagellum) and called spermatozoa.

not sure but try c two haploid cells

explanation:

homeostasis is the tendency towards a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. and this is how it applies to the integumentary system. back to top. skin functions in homeostasis include protection, regulation of body temperature, sensory reception, water balance, synthesis of vitamins and hormones, and absorption of materials. when body temperature falls, the sweat glands constrict and sweat production decreases.