A population of wild turkeys lives in a forest ecosystem. The population’s size is near the carrying capacity of its environment. Which of the following best describes the forest ecosystem’s carrying capacity for the wild turkey population?
Choose 1

A. The carrying capacity is the limit to the number of wild turkeys the forest ecosystem can support.

B. The carrying capacity is the wild turkey population density at which competition for resources is lowest.

C. The carrying capacity is the minimum number of nesting sites needed to support the wild turkey population.

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Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i. e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.

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