Is both a body of knowledge that describes order in nature and a to discover that knowledge through experimentation. a scientific is an observation agreed upon by competent observers. a is an educated guess as to the cause and effect of a phenomenon. for this to be a validscientific _(same as last one must be able to prove it false. a scientific applies to a synthesis of a large body of information that has been tested, validated and accepted by a large number of scientists. a scientific on the other hand has also been tested and accepted, but usually involves only 1 principle or concept. a scientific model is useful for designing and making predictions to determine whether or not a particular concept or relationship is true. the process of finding new scientific knowledge is called the scientific

Which would be an adaptation in a rainforest, but not in a tundra? a. ability to store water for a long time b. fur that blends in with snow c. strong claws for killing prey d. a beak that can dig into thick trees

Which sequence correctly shows the path of carbon dioxide during repiration?

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.