An embryo at the 4-cell stage of development is almost twice the size of an embryo at the 2-cell stage of development.
Answer the following statement true (T) or false (F)
False
Cleavage results in an increase in the number of cells without an increase in size of the embryo.
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The herbicide 2,4-D affects the metabolism of dicots and kills most of them. What is a common feature of plants that are susceptible to 2,4-D?
A) branching leaf veins B) flower parts in threes C) one cotyledon in the seed D) vascular tissue scattered throughout the stem
What is the best way to describe our current understanding of the one-gene/one-polypeptide hypothesis?
A. It continues to be an accurate description of how genes work. B. It is oversimplified, especially in eukaryotes. C. It has been replaced by the more accurate “one-gene/one-enzyme” hypothesis. D. It was true for fungi like Neurospora, but not for other species.
The catabolism of glucose begins with one or more of the glycolytic pathways that yield pyruvate.
Answer the following statement true (T) or false (F)
Which statement is correct about all organisms that are eukaryotes?
A) They consist of many cells. B) They have organelles such as a nucleus. C) They consist of cells that are surrounded by a cell wall. D) They can be seen without a microscope.