1. Introduction to Biology

Which of the following does NOT lead to an increase in phytoplankton reproduction?

Which of the following diseases is NOT influenced by diet?

How many elements are present in the human body at levels higher than trace amounts?

On day 4 of the experiment, what event most likely caused the observed decrease in the number of light red kidney beans?

Which type of reproduction does the paramecium use, and which type does the sea urchin use?

Which of the following best explains the presence of prolactin in various vertebrate species?

Why may you be asked whether you are allergic to eggs before receiving a vaccination?

Which of the following is a primary cause of El Niño climate variations?

Which of the following correctly lists a step in the nitrogen cycle?

What is the primary function of melanin in humans?

Which of the following best describes the primary function of enzymes in biological systems?

Which of the following describes a possible symptom of fetal alcohol syndrome?

Which of the following does NOT put women at risk for hypocalcemia?

Which of the following is a well-established outcome of breastfeeding for children?

Which of the following best describes the central dogma of molecular biology?