Author: Anonymous

Carbon-12, Carbon-13 and Carbon-14 are examples of _______________. A. radioactivity B. isotopes C. isomers D. molecules

Membrane-bounded vesicles that contain enzymes for oxidizing small organic molecules with the formation of hydrogen peroxide are A. vacuoles.B. vesicles.C. glyoxisomes.D. lysosomes.E. peroxisomes.

The phospholipids of a cellular membrane will have their ____ ends facing each other (inside) and their ____ ends facing away from each other (outside). A. hypotonic, hypertonicB. hypertonic, hypotonicC. hydrophilic, hydrophobicD. hydrophobic, hydrophilic  

Which of the following help in defending humans against disease? A. immunoglobulins (antibodies)B. lysosomesC. peroxisomesD. All of the choices help defend against disease.

Bonus question

Glycogen is to animal cells as ________ is to plant cells. A. lipid B. cellulose C. starch D. protein E. sugar

. The major functions of the plasma membrane do NOT include A. separation of the fluid environments inside and outside the cell.B. regulation of molecules and ions that pass into and out of the cell.C. recognition and communication between different cells and tissues.D. maintaining connections between adjacent cells.E. production of proteins used in construction of the cell wall.

Light bends when it

The changing shapes of constellations in the night sky is caused by

The background stars during a solar eclipse are those of constellations