Match the compound with the correct element contained within it.
iron
1. chlorophyll
carbon, hydrogen,
nitrogen, oxygen,
phosphorus, and calcium.
2. hemoglobin
3. 300 enzymes
cobalt
4. 30 enzymes
zinc
5. vitamin b12
magnesium
6. organic compounds such as
carbohydrates, lipids, proteins, and
nucleic acids.
copper

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Which of the following accurately describes the correct order of events in the process of transpiration within a plant? a. water enters the roots, passes through the leaves, and leaks through the stem pores. b. water enters the roots, gets transported through the stem, and evaporates through the leaves. c. water is absorbed through the leaves, is transported through the stem, and nourishes the roots. d. water is absorbed through the leaves, nourishes the roots, and leaks through the stem pores.

How many electrons can occupy any electron orbital?