Which of the following statements about collagen is false?

a. It is the most abundant protein in animal tissues.
b. It forms a double helix, with two collagen molecules wrapped around each other in a ropelike structure.
c. It contains an amino acid called hydroxyproline.
d. It is a secreted protein.


Ans: b. It forms a double helix, with two collagen molecules wrapped around each other in a ropelike structure.

Biology & Microbiology

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When the chromosomes line up in mitosis this is known as which phase?

A. Telophase B. Anaphase C. Metaphase D. Prophase

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A pregnant woman goes to her obstetrician for her first ultrasound. After the exam is over, the doctor remarks, "It looks like the ribs are still developing, and I might even have seen some tiny fingers and toes." How many weeks pregnant is this woman?

A) less than 5 weeks B) between 5 and 8 weeks C) between 8 and 14 weeks D) more than 14 weeks

Biology & Microbiology

Which of the following is not an autotroph?

a. yeast b. oak tree c. cyanobacterium d. algae e. grass

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Experimentation is only one part of the process of scientific inquiry, but it is a very important step because it _________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology