Antelope live and flourish on the grasslands of africa. lions live in prides and hunt on the same grasslands. these two animals belong to the same ecosystem. which one would be considered a predator and which wone would be prey. A) Both of the animals are prey

B) Both of these animals are predators

C) the lion is the predator and the antelope is its prey.

D) the antelope is the predator and the lion is the prey

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Why do you think the puppy litter was all dark-haired?

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.