Answers: 2
Biology, 21.06.2019 14:00
The image shows ekgs of a person with normal heart waves and of a person having tachycardia. based on this image, what kind of condition is tachycardia? a. the heart beats abnormally fast. b. the heart beats abnormally slow. c. the right atrium of the heart stops working. d. the left ventricle pumps less blood to the aorta.
Answers: 1
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 02:30
What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.
Answers: 1
What do the “nodes” in a cladogram represent?...
Mathematics, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
Biology, 09.01.2021 21:50
English, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
English, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50
Mathematics, 09.01.2021 21:50