As ice melts
A) hydrogen bonds are broken.
B) water molecules become less tightly packed.
C) the water becomes less dense.
D) heat is released.
Answer: A
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Seth purchased five pounds of live crayfish and realized that the outer shells were made of a tough carbohydrate similar to that used to make the carapace of a cockroach. What do you think the outer shells of the crawfish are made of?
A. Glycogen B. Chitin C. Amylopectin D. Cellulose E. Fibrin
According to the latest data, the global human population is predicted to
A) continue to increase exponentially for the next 50 years. B) peak at 10 billion. C) decline precipitously to 1 billion. D) increase at a steady rate for the next 50 years.
Which of the following molecules is NOT DIRECTLY involved in translation?
a. DNA b. mRNA c. ribosomes d. tRNA e. All of the above molecules are directly involved in translation.
The hormone ________ promotes both mammary gland development and milk production
Fill in the blank(s) with correct word