Answers: 1
Biology, 21.06.2019 21:50
What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron
Answers: 3
Biology, 21.06.2019 22:20
Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?
Answers: 2
Biology, 22.06.2019 00:00
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.
Answers: 3
Biology, 22.06.2019 03:00
What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.
Answers: 2
How the parts of a plant cell might help a cactus survive long dry periods in the desert. (2 points)...
Social Studies, 24.07.2019 05:50
Business, 24.07.2019 05:50
Social Studies, 24.07.2019 05:50
Social Studies, 24.07.2019 05:50
Biology, 24.07.2019 05:50
Biology, 24.07.2019 05:50