4. Base your answers to the questions on the diagram and information below.
A student made a rocket balloon using an inflated balloon, a straw, a long piece of string, two poles,
and some tape. It looked similar to the diagram below.
String threaded
through straw
Straw
Tape
Start position
marked on string
String
attached
to pole
String
attached
to pole
Inflated balloon
How would taping a coin (adding mass) to the balloon affect the overall motion of the balloon?
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What is the importantence of the carbon and nitretan cycles in the environment

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.

What are some natural processes that represent physical and chemical changes?