A(n) exponential growth curve has a J shape. Indicate whether the statement is true or false
True
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One of your friends has several brothers and sisters, each quite different in appearance, interests, and abilities, even though all have the same parents. Explain in detail how these siblings reflect crossing over and independent assortment.
What will be an ideal response?
Vascular endothelial growth factor (abbreviated as VEGF and pronounced "Veg-F") is a peptide- signaling molecule related to platelet-derived growth factor
VEGF is important in the formation of the circulatory system because its signaling pathway causes the formation of new blood vessels in developing embryos during normal development. It also causes the formation of new blood vessels that supply tumors when the tumor produces and secretes VEGF. Given what you know about the different kinds of cell signaling and about VEGF, which of the following is true? A. VEGF is an endocrine-signaling molecule because it circulates in the bloodstream inside of platelets. B. VEGF is an endocrine-signaling molecule because it is released from platelets into the bloodstream where it is carried throughout the body, causing widespread activation of PDGF receptors on cells in a variety of tissues. C. VEGF is a paracrine signaling molecule because it binds to VEGF receptors on cells at the site where new blood vessels are needed.
The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing at an exponential rate, is the ________.
A. stationary phase B. lag phase C. exponential phase D. prophase E. death phase
You are practicing throwing baseballs long distances with the members of your baseball team. At the same time that your partner throws the ball to you, another player across from you throws his baseball off-target, and it heads straight toward you. You
hold your baseball glove up to catch your partner's ball, and you instinctively throw up your other arm to protect your face from the other incoming ball. The protective action of throwing up your arm is an example of a(n) A) reflex. B) synapse. C) sympathetic response. D) parasympathetic response.