Proteins are created with:
A. phosphodiester bonds.
B. peptide bonds.
C. triglycerides.
D. polysaccharides.
B. peptide bonds.
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Chemical bonds that are formed when one atom with a partial positive charge (created from unequal
sharing of electrons) is electrically attracted to another atom with a partial negative charge (also created from unequal sharing of electrons) are called ____.
a. polar covalent bonds b. van der Waals forces c. ionic bonds d. hydrogen bonds e. nonpolar covalent bonds
Biologists captured and marked 100 butterflies, and later captured 115, 5 of which were marked. The
population estimate is 2000 butterflies.
Indicate whether the statement is true or false.Spherocytosis is a human blood disorder associated with a defective cytoskeletal protein in the red blood cells (RBCs). What do you suspect is the consequence of such a defect?
A) abnormally shaped RBCs B) an insufficient supply of ATP in the RBCs C) an insufficient supply of oxygen-transporting proteins in the RBCs D) adherence of RBCs to blood vessel walls, causing plaque formation
Fossils of prokaryotic cells are dated as far back as approximately ________ billion years ago.
A. 2.8 B. 3.8 C. 1.5 D. 4.8