Question 6 In membranes, one of the most common targets of reactive oxygen species are saturated fatty acids polyunsaturated fatty acids cholesterol

Question 5 Which of the following subunits of ATP synthase is correctly described? a: site of ATP synthesis y: protons are transferred to this subunit, determines the number of protons transferred per ATP formed a: contains two half channels for transferring protons across the membrane

QUESTION 5 Many bioactive compounds are derived from amino acids. This compound, illegal in most countries, is used as a hallucinogen used both for ritualistic purposes in some cultures and as a recreational drug. It is derived from an amino acid through removal of the backbone carboxylic acid group and dimethylation of the amino group. The amino acid from which it is derived must be: (Write out the entire name; Spelling matters, but case does not; Do not include L- or D- in the name; For acidic amino acids write the full name, e.g. "so-and-so acid") N ZI

QUESTION 20 Some of the stem cells in bone become osteoclasts during differentiation. Researchers have shown that chemical signals called cytokines are released into the extracellular fluid by bone stem cells in response to environmental stimuli. The researchers also have shown that the cytokines induce these same bone stem cells to differentiate into osteoclasts. This example illustrates how a(n). signal functions in the human body. O a. autocrine b. hormone O c. paracrine O d. juxtacrine e. intracellular

Question 11 The breakdown of large molecules by the enzymatic addition of water is an example of what kind of reaction? O 1. oxidation O 2. reduction O 3. condensation O 4. hydrolysis O 5. decarboxylation A Moving to another question will save this response. W AR SONY ASSIST BUtton, Onetouch

QUESTION 1 The Wnt signaling pathway component, Dsh, effects the action of B catenin by: O A. inhibiting the function of axin in the destruction complex O B. blocking GSK-3B from joining the destruction complex O C. stimulating ubiquitination of B catenin O D. causing its release into the cytosol from the plasma membrane complex O E. causing an increase in phophorylation of B catenin QUESTION 2 PCR can be used to identify the breakage points of mtDNA that are joined to form a mitochondrial genome with a deletion. This techni que uses: O A. two primers outside the deleted region; a long PCR extension segment. O B. one primer within the deleted region and one primer outside the deleted region; a long PCR extension segment O C. one primer within the deleted region and one primer outside the deleted region; a short PCR extension segment O D. two primers outside the deleted region; a short PCR extension segment O E. two primers within the deleted region; a short PCR extension segment

QUESTION 10 In the deoxy state of HB, which of the following does not occur? O An intra-chain salt bridge between Val 98 and Tyr 145. O An intra-chain salt bridge between Histidine 146 and Aspartate 94 side chains O A peptide bond between Tyr 145 and His 146. O An inter-chain salt bridge between Histidine 146 and Lys 40

QUESTION 5 In RNA, adenine pairs with bonds. with bonds and guanine pairs with with uracil, triple, thymine, double uracil, double, thymine, triple uracil, triple, cytosine, double O uracil, double, cytosine, triple

Question 9 The product of the oxidation of glyceraldehyde 3-phosphate is: O 2-phosphoglycerate O 1,3-biphosphoglycerate O phosphoenolpyruvate O fructose 1,6-biphosphate oxaloacetate Previc

Question 2 of 17 Fill in the blanks: is the total number of rings present in cholesterol is the total number of carbons present in cholesterol is the sphingolipid that is a major component of biological membranes is a term that refers to substances that contain hydrophobic and hydrophilic parts is the trivial name of a saturated fatty acid containing 18 carbons