Exam 1: Biology

The molecule ATP is composed of elements commonly found in organic molecules. Which of the following is one of these elements?

Which of the following environmental conditions makes water less available to plants for growth?

Which of the following statements best summarizes a change that is represented by the arrows labeled "3" in the diagrams?

The atmosphere contains about 80% nitrogen gas, but nitrogen in this form cannot be used by plants. Which of the following processes converts atmospheric nitrogen to a useful form for plants?

Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule?

Mallory has four aquatic plants of the same size and species. She submerges each plant in a separate beaker filled with 200 mL of water. She then sets each beaker under a different intensity of light. Mallory observes that, of the four plants, the plant in the beaker under the most intense light gives off the most gas bubbles in a 20 min period.Which of the following statements best explains Mallory's observations?

In tomato plants, the tall vine allele (T) is dominant to the short vine allele (t). Two tomato plants are crossed. Among the offspring plants grown from seed, 45% have tall vines and 55% have short vines.What are the most likely genotypes of the parent plants?

The amount of water a plant has in its tissues is determined primarily by the balance of which of the following processes?

An invasive species of green algae has become established along the coasts of the Mediterranean Sea. Which of the following statements best explains why this species of algae has been so successful in the Mediterranean Sea?

Which of the following organisms is a secondary consumer in this food web?

Which of the following relationships is an example of mutualism?

Individuals with one form of lactose intolerance do not produce the enzyme lactase because the gene coding for the production of lactase is shut off in their cells. This means that which of the following processes does not occur for the gene?

A caterpillar eats an oak leaf. Which of the following best describes the energy transfer in this situation?

Capillaries are part of which body system?

Lemur body types can vary widely. In addition to fossils and comparative anatomy, which of the following types of evidence can scientists reliably use to study the evolution of the variety of lemur body types?

When lactose is digested by the human body, each lactose molecule is broken down into smaller molecules. To which of the following categories of molecules do these smaller molecules belong?

The outermost tail feather of the male barn swallow is longer than that of the female barn swallow. The long tail feather helps the males attract females, but it also requires the males to use extra energy to fly.The long tail feather trait is maintained in the barn swallow populations because, compared to males with a shorter tail feather, males with a longer tail feather are more likely to

Which of the following releases oxygen into this food web ecosystem?

Baby food manufacturers sometimes use proteases in their products. Proteases catalyze the breakdown of the proteins in these foods, making digestion easier for infants. Proteases are which of the following types of molecules?

In pigeons, the allele B produces ashred feathers. The allele b produces blue feathers. The B allele is dominant to the b allele. A pigeon with genotype Bb is crossed with a pigeon with genotype bb. What percent of the offspring are expected to have ash-red feathers?