What is the reservoir for Ca2+ in the body?
A. muscles
B. brain
C. blood
D. liver
E. bones
Answer: E
You might also like to view...
Which of the following are not part of the shoot system?
A. leaves B. stems C. flowers D. roots E. fruits
The cells of the anterior lobe of the pituitary gland secrete many hormones. From the following list select the hormone that is NOT secreted from the anterior lobe of the pituitary.
A. growth hormone B. prolactin C. follicle-stimulating hormone D. melanocyte-stimulating hormone E. antidiuretic hormone
From DNA x-ray diffraction data, it was determined that _____
a. the amount of adenine equaled the amount of thymine b. different species have different proportions of adenine and guanine c. nitrogen containing bases were arranged on the outside of the double helix structure d. the shape of the molecule could be a double helix e. the backbone of the double helix was held together by hydrogen bonds
Which of the following best describes the structure of how water molecules form and interact?
a. Hydrogen atoms bond with each other to create a stable outer shell of electrons. Then they form a hydrogen bond to an oxygen atom to create the water molecule. b. Oxygen atoms transfer one electron to each of the hydrogen atoms, forming an ionic bond that attracts other water molecules to it. c. The oxygen atom and hydrogen atoms form a covalent bond with one another to create stable outer shells of electrons. d. The electrons are shared unequally resulting in a polar molecule whose slight charges form weak hydrogen bond attractions with other water molecules. e. Hydrogen bonds are formed between the two hydrogen atoms and the oxygen atom. This water molecule then forms a covalent bond with adjacent water molecules. f. The oxygen atom is more electronegative than the two hydrogen atoms. Due to this, it removes the electron from each hydrogen atom. This satisfies the outer shell of oxygen. Then hydrogen bonds form between the two remaining hydrogen atoms to hold them near to the oxygen atom.