Which of the following statements are correct? i) hormones often regulate homeostasis through antagonistic functions. ii) hormones of the same chemical class usually have the same function. iii) hormones are secreted by specialized cells usually located in exocrine glands. iv) hormones are often regulated through feedback loops.

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino