QUESTION 13 Compared to a hydrophilic messenger, a hydrophobic messenger is more lik O bind to a receptor on the surface of its target cell O produce its effects more quickly be carried in the blood by carrier proteins none of the other choices QUESTION 14 Sodium ions are found: O only inside cells both inside and outside cells, but they are more concentrated inside cells both inside and outside cells, but they are more concentrated outside cells O only outside cells QUESTION 15 Compared to a neurotransmitter, the effects of a hormone are usually: slower acting and shorter lasting faster acting and shorter lasting faster acting and longer lasting slower acting and longer lasting

QUESTION 2 In this phase, ALL voltage-gated Na+ channels are in the process of re-setting and cannot be opened rising phase falling phase absolute refractory period relative refractory period

QUESTION 10 Which of the following is an example of positive feedback regulation in the body? A Blood clotting mechanism OB. Regulation of temperature OC. Regulation of heart rate OD Regulation of blood pressure

Question 66 When a cell membrane potential shifts from -70mV to -90mV we say the membrane has: O depolarized O repolarized O hyperpolarized O polarized A Moving to another question will save this response. 17 stv MacBook Air DII F2 F3 F4 F5 F6 F7 F8 @ %23 2$ へ 7 8 W R T Y D F C ンU) つ B LE # 3

QUESTION 19 Receptor-mediated signaling might affect which of the following cellular processes? OA. Cell growth OB. Cell cycle OC. Transcription OD. Apoptosis O E. All of the above QUESTION 20 Which of the following does NOT function as a second messenger in cell signaling pathways? OA cholesterol OB. CAMP O C. IP3 O D. Calcium ions (Ca2+) QUESTION 21 In the insulin-signaling cascade, PTEN removes a phosphate group from the membrane lipid PIP3 to form PIP2. What type of enzyme is PTEN? OA. Polymerase OB. Phosphatase OC. Kinase OD. Lipase O E. Ligase

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 38 Plant cells carry out photosynthesis to produce all of their ATP whereas animal cells carry out cellular respiration to produce all of their ATP. O True O False MacBook Pro esc 吕口 DII F1 F2 F3 F 4 F5 F6 F7 F8 1 3 4 Q W Y А F J ck Z C V 00 T %24

Question 25 Honey bees have a special type of communication to indicate to the other worker bee members of the hive that there is a presence of nearby food by doing what? performing a special dance vibrating their wings at varying frequencies flashing their wings sending visual cues producing high-frequency tones

Question 4 Temoporfin (Foscan) is a photosensitizer used in photodynamic therapy for the treatment of squamous cell carcinoma of the head and neck. The prodrug is not being activated by internal enzymes but activated by light as an external stimulus. What is the benefit of this design? O To achieve spatiotemporal control of the killing of cancer cells. O More bioorthogonal as it does not introduce addition chemicals into the body. O To only target superficial cancer cells within the penetration depth of light. O More convenient for patients as they can activate foscan by staying in the sun.

QUESTION 10 Remdesivir is     converted in vivo to CMP analog and then phosphorylated to CTP analog.     a successful treatment for Ebola.     There are more than 1 correct answers in the other choices.     a potential chain terminator for the replication of RNA viral genome