polar covalent bond
What will be an ideal response?
a type of covalent bond in which electrons are pulled toward one atom and away from another,
resulting in slightly positive and slightly negative charged regions of the molecule
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Answer the question using the accompanying figure. In the internal leaf structure, the structure labeled "2" is ____
a. a vascular bundle b. spongy mesophyll c. epidermis d. a stoma e. palisade mesophyll
Phage T4 protects its DNA from cleavage by host restriction enzymes by ________.
A. substituting glucosylated hydroxymethylcytosine for cytosine B. replicating very rapidly C. inactivating restriction enzymes D. methylating bases
Which of the following could result in hemolytic disease of the newborn?
A. Rh-negative mother and Rh-negative father B. Rh-positive mother and Rh-positive father C. Rh-positive mother and Rh-negative father D. Rh-negative mother and Rh-positive father E. either Rh-positive mother and Rh-negative father or Rh-negative mother and Rh-positive father
A ligament connects
A. a cartilaginous joint. B. muscle to muscle. C. cartilage to bone. D. bone to bone. E. muscle to bone.