A couple conceives at the beginning of January. During which month will their child be undergoing organogenesis?
A. January
B. February
C. March
D. April
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about organogenesis? What other information is related to the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
B. February
Clarify Question
What is the key concept addressed by the question?
· This question is asking you to identify the period of organogenesis.
What type of thinking is required?
· Apply level:
o You are being asked to take what you already know and use, or apply, it to the identification of the time period in which organogenesis occurs.
Gather Content
What do you already know about organogenesis? What other information is related to the question?
· Organogenesis is the formation of organs in their specified locations.
· Organogenesis begins before gastrulation ends, which in humans also marks the initiation of the process of neurulation.
· In humans, organogenesis begins the 4th week after fertilization.
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
· Since organogenesis begins the 4th week after fertilization, and fertilization occurred in early January, organogenesis in this example would occur in February.
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
· Apply level:
o Answering this question correctly depended on your ability to use organogenesis in a new situation. If you got an incorrect answer, did you remember that organogenesis starts in the 4th week after fertilization, or that fertilization took place in early January?
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A) solute moves from a high concentration in the source to a lower concentration in the sink B) water is actively transported into the source region of the phloem to create the turgor pressure needed C) the combination of a high turgor pressure in the source and transpiration water loss from the sink moves solutes through phloem conduits D) the formation of starch from sugar in the sink increases the osmotic concentration E) the pressure in the phloem of a root is normally greater than the pressure in the phloem of a leaf
A point mutation that causes a premature stop codon is called a:
A. missense mutation. B. nonsense mutation. C. silent mutation. D. frameshift mutation.
If prokaryotic cells do not have mitochondria, where do they produce their cellular energy?
What will be an ideal response?
Exercise 28 covered the most probable number procedure and exercise 29 covered the membrane filtration method. Imagine you were given a water sample with a large amount of debris. Which method would you choose to test this water sample?
A) The most probable number procedure B) The membrane filtration method