Angela1

Question states: Oxygen and carbon dioxide crossing between blood and air in the lungs must pass through cells of which of the following types: CHOICE A: type I pneumocyte only CHOICE B: type I pneumocyte and endothelial cells So, it's a matter of if endothelial cells are included or not? I am very lost..

Greetings to all, Question states: The cytochrome P450 system of liver in normal individuals has a capacity (Vm) to oxidize approximately 10 nmol of drug X per minute per gram of liver. When the concentration of drug X in the liver is 2um oxidation products are formed at the rate of 4 nmol/min/g of liver. What is the Km of cytochrome P450 for this drug? Two answer choices were 5 nM or 3 uM. The correct answer is 3 uM. I am totally lost on how to do this problem. Can someone please help?

Thank you for replying! Hmm, you made good points...This was the question. I am wondering if to go with the only selection that had myeoblasts.

Greetings, I am having a lot of trouble finding the correct answer to this question after reading about them in my book still. The question asks: A patient with acute myeloblastic leukemia might have a very high bone marrow concentration of: neutrophilic myelocytes basophilic myelocytes eosinophilic myeloblasts colony-forming unit erythrocytes--THIS WAS MARKED WRONG neutrophilic stab cells I am very lost at which one would increase? Help would be appreciated.

Ohh, I did not factor that in! Thank you so much for alerting me.

True, but my teacher wants us to focus only on the tissues.

Hello everyone, I am working on a project where I need to write about what tissues (not bones) that form the knee and help it function. After my research, I have come up with meniscus tissue, cruciate ligaments, articular cartilage, and tendon. I have not written enough content yet and was wondering if there are any other structures or something I missed? Thanks.

The original question asked:Which of the following is (are) often absent in thick skin but typically present in thin skin? Arrector pili muscles Meissner’s corpuscles Stratum basale Stratum corneum--I know it is not this one for sure I think it is the Meissner's corpuscles since they have to do with pain/touch, but am unsure. Can someone help me confirm?

Thanks to both of you who responded. Very appreciated!

Hello everyone, Can I post histology based questions on this forum? I would think it could fall under here, but wanted to confirm first. Thanks!

I see what you mean now. Wow, thank you so much for taking the time out to write this full explanation!! I appreciate it so much.

Thank you soo much for helping to clear this up. I am thinking it may be a typo.. If you do not mind, would you care to expand a little more on what you meant by the possible coupling mechanism being why it is called 'reduced?'

Hello everyone~ I have a burning question. I was studying and came across this reduction/oxidation example under gluconeogenesis topic. The book stated that: NADH----> NAD+ is reduction and NAD+ ------> NADH is oxidation. I am very confused because I thought opposite. I thought that is the H is lost in NADH, that is oxidation, as oxidation is loss of electrons (or oxygen). Can someone please clear this concept up of oxidation/reduction. Thank you.