BIOLOGY MIDTERM REVIEW 2019

Your favorite plant is growing very slowly, and you would like to find some way to increase its growth rate. Which of the following should you try increasing first?

• NITROGEN

• OXYGEN

• SODIUM

• CALCIUM

One of the nutrient cycles moves from an atmospheric gaseous form to the soil through both abiotic and biotic processes, moves through the food web, then is returned to the soil or to the atmosphere. Which cycle fits this description?

• CARBON

• NITROGEN

• PHOSPHORUS

• WATER

A food web is represented in the diagram below. What does the X mostly likely represent?

• autotrophs

• decomposers

• heterotrophs

• parasites

Referring to the diagram below, suppose 10, 000 units of energy are available at the level of the grasses. What is the total number of energy units lost by the time energy reaches the coyote?

• 90 units

• 990 units

• 9900 units

• 9990 units

During photosynthesis, light energy is converted to the energy in chemical bonds. What also happens according to the predictions of the second law of thermodynamics?

• chemical energy is converted to light energy

• matter is lost in the process

• heat is released in the process

• the light and chemical energy are equal

In the experiment shown below, which process occurring in the peas causes the drop of liquid to move to the left?

• cellular respiration

• digestion

• photosynthesis

• protein synthesis

What change could a student measure to collect data about the rate of photosynthesis in a certain type of algae when it is exposed to different colors of light?

• the temperature of the water surrounding the algae

• the number of ribosomes in the green algae cells

• the color of algae

• the number of gas bubbles given off by the algae

In the material cycle shown below, which processes are represented by letters A and B?

• A-excretion, B-respiration

• A-transpiration, B-excretion

• A-photosynthesis, B-transpiration

• A-respiration, B-photosynthesis

Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthymol blue turns yellow. An aquatic green plant is placed in each tube, and the tubes are corked. One tube is placed in the dark, and the other tube is placed in direct sunlight. The yellow solution in the tube in sunlight turns blue, while the one in the dark remains yellow. Which statement best explains why the solution in the tube placed in sunlight returns to a blue color?

• Oxygen was produced by photosynthesis.

• Oxygen was removed by respiration.

• Carbon dioxide was removed by photosynthesis

• Carbon dioxide was produced by respiration.

What happens to a population at zero population growth?

• Birthrate equals the death rate.

• Births outpace deaths

• Carrying capacity is exceeded.

• Deaths outpace births