Particular receptor tyrosine kinases (RTKs) that promote excessive cell division are found at high levels on various cancer cells. A protein, Herceptin, has been found to bind to an RTK known as HER2. HER2 is sometimes excessive in cancer cells
This information can now be utilized in breast cancer treatment if which of the following is true? A) if HER2, administered by injection, causes cell division
B) if the patient's cancer cells have excessive levels of HER2
C) if the patient's genome codes for the HER2 receptor
D) if the patient has RTKs only in cancer cells
B
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What is not involved in a spinal reflex?
a. spinal cord b. brain c. sensory neuron d. motor neuron e. gray matter
In monocots, endosperm ____
a. consists mainly of glucose and water b. is consumed by the embryo as the seed develops c. is transferred to the cotyledons d. is largely unused as the seed develops e. matures into a fruit
Which antigen, expressed on the surface of all red blood cells, is modified by A- or B-transferases?
What will be an ideal response?
You are carrying out an experiment on several aquatic plants in your fish tank. You decide to expose two of the plants to green light and two to blue light
You want to determine which type of light is best for the light reactions, so to reach your conclusions, you decide to record the amount of oxygen bubbles produced. Which of the following results would be expected? A) There would be more bubbles from the plants in blue light than from those in green light. B) No bubbles would be produced in either green light or blue light. C) There would be more bubbles from the plants in green light than from those in blue light. D) There would be the same number of bubbles from plants in blue or green light.