What do all members of a biological species have in common?

a.

they can interbreed and produce fertile offspring.

b.
they are members of the same population.

c.
they have identical physical characteristics.

d.
they live in the same geographical location.

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

What are the four basic classes of organic molecules how do they differ structurally and functionally

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.