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

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  

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.

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

One organelle, called the _______________, contains enzymes that digest worn out parts of cells.A) ribosomeB) lysosomeC) vacuolesD) endoplasmic reticulumE) centriole

. 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.

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

Bonus question

On the H-R diagram our Sun is a

Cosmic Inflation refers to