What is the main difference between binary fission and mitosis?
A.) There is no DNA replication in binary fission.
B.) Two parents are required for mitotic reproduction
C.) Binary Fission occurs in single-celled organisms only.
D.) Mitosis takes place only in sexual reproduction.
Ans: C.) Binary Fission occurs in single-celled organisms only.
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Which part of the seed produces hydrolytic enzymes that break down the starchy endosperm during seed germination?
A. scutellum B. amyloplasts C. aleurone layer D. plumule E. coleorhiza
Prior to the S phase of the cell cycle, a cell passes through a regulatory checkpoint. If
mutations are detected in the cell, the __________ will initiate cell death.
a. tumor suppressor genes b. oncogenes c. DNA repair genes d. metastatic cells
The ampullae of Lorenzini are jelly-filled pores that allow fish to sense electromagnetic currents. What is an important property of the jelly in these organs?
A. It secretes pheromones for conspecifics. B. It is a good electrical conductor. C. It contains gustatory receptors. D. It is an electrical insulator. 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 electroreception? 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?
Place the following in developmental order beginning with the earliest event
1) limb buds appear 2) face begins to look human 3) muscles differentiate 4) downy hair covers the fetus 5) sex can be determined by external inspection a. 3, 1, 2, 4, 5 b. 1, 3, 4, 2, 5 c. 1, 3, 2, 5, 4 d. 1, 2, 3, 4, 5 e. 1, 3, 5, 2, 4