Written by Merel Dagher (PEACE Advisor) Press “Read More” to see the answers. The correct answer is a. hCG is a hormone secreted by the placenta in order to maintain the activity of the corpus luteum. The corpus luteum is needed for the secretion of estrogen and progesterone, which bind to receptors in the...
Written by Merel Dagher (PEACE Advisor) Press “Read More” to see the answer. The correct answer is e. There is one of two pathways that can be taken, depending on the levels of glucose in the body. If glucose levels are high, the beta-islet cells of the pancreas will secrete insulin which will bind...
Written by Merel Dagher (PEACE Advisor) Click “Read More” to see the answers. The correct answer is d. Voluntary muscles must be moved consciously, whereas involuntary muscles perform their function continuously without conscious effort. Both skeletal and cardiac muscles are striated because they have multiple cell layers that make up the muscles; smooth muscles...
Written by Merel Dagher (PEACE Adivsor) Click “Read More” to see the answer. The correct answer is a. Both systems involve the hypothalamus, which produces GnRH, which then binds to the anterior pituitary and causes the production of FSH and LH. LH, in spermatozoa production, binds to the Leydig cells and causes the conversion...
Written by Merel Dagher (PEACE Advisor) Press “Read More” to see the answer. The correct answer is a. White blood cells are involved in both responses. In the hormone response, platelet cells form a platelet plug, which temporarily plugs the injury until prothrombin is converted to thrombin, which then triggers the conversion of Fibrinogen...
Written by Merel Dagher (PEACE Advisor) Press “Read More” to see the answers. The correct answer is d. ACTH controls cortisol levels in response to long-term stress. ADH increases water levels in the blood; Erythropoietin increases oxygen levels in the tissues; renin increases blood pressure; oxytocin increases uterine contractions caused by the pressure of...
Written by Merel Dagher (PEACE Advisor) Click “read more” to see the answer. The correct answer is d. Tamoxifen is an antagonist because it prevents the binding of estrogen to the estrogen receptor by binding their first. It’s binding produces no response and therefore limits the amount of cells produced, which limits the overall...
Written by Merel Dagher Click “Read More” to see the answers. The correct answer is e. Steroid response is controlled by three different variables – the ability of the steroid to bind to the receptor, the ability of the receptor to bind to the DNA, and the ability of the receptor to bind to...
Written by Merel Dagher (PEACE Advisor) Click “Read More” to see the answers. The correct answer is e. Stem cells are awesome!
Written by Merel Dagher (PEACE Advisor) Click “Read More” to see the answer. The correct answer is a. DNA grows in the 5’ → 3’ direction because the hydroxide group on the 3’ carbon will attack the phosphate group on the 5’ carbon, thus resulting in a phosphodiester bond formation between the 5’ carbon...