If an ecologist wants to determine the number of grass plants in a grassland, it is not realistic to actually count them all. Rather the researcher measures the number of individuals in several one-meter by one-meter square plots. What must they do next to estimate the total population size?
What will be an ideal response?
Scientists first determine the average number of individuals per sample plot. They then multiply that average by the number of plots that would fit in the population's range.
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The name given to the area of study that is involved with the determination of the entire DNA sequence of an organism is known as ________.
Fill in the blank(s) with the appropriate word(s).
Why do triglycerides yield more energy than carbohydrates?
a. they have fewer removable electrons b. they have double bonds c. they contain glycerol d. they have more removable electrons e. fatty acids
Which of the following is NOT true of proteins?
a. They determine the structure and function of cells and tissues. b. They function as receptors. c. They function in recognition. d. They are the code for molecules that are important for life processes. e. They enable cells to communicate.
Cells called ______________ release chemicals that kill bacteria and everything else in an area, including themselves.
A. monocytes B. macrophages C. basophils D. neutrophils