If you transfer bacterial growth from a broth to an agar plate but nothing grows after incubation, what may have occurred?
A. Contaminants may have been introduced into the broth culture.
B. The lid may have been left off the Petri dish for too long during the transfer.
C. The mouth of the broth tube may not have been passed through the Bunsen burner flame.
D. The loop may have been too hot when making the transfer.
Ans: D. The loop may have been too hot when making the transfer.
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Plants grow toward the light because:
A. auxin concentration on the shaded side increases. B. stem elongation is greater on the side exposed to the light. C. gibberellin concentration is greater on the side exposed to light. D. cells on the shaded side divide more rapidly due to the presence of ethylene. E. photoreceptive statoliths settle to the bottom of the cells on the shaded side.
Choose the true statement about the morphological data in the chart shown below. The "1" in the box means the trait is present and the "0" indicates that the trait is absent.(Note: All of the characteristics across the top of the columns are considered "TRAITS" for purposes of reading the chart.).
A. All organisms in this chart share all of the derived characteristics.
B. Only the gorilla and humans share all of the derived characteristics.
C. The lamprey is the only outgroup since it has none of the derived characteristics.
D. The salamander and the tiger together are the outgroup because they only share two of the derived characteristics (jaws and lungs).
E. The shark is the outgroup since it only has one of the derived characteristics (jaws).
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about outgroups and derived characters?
Consider Possibilities
· Consider the different answer options. Which can you rule out?
Choose Answer
· Given what you now know, what information and/or problem solving approach 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?
Large proteoglycan aggregates may contain a hyaluronin molecule bound to the core protein of multiple proteoglycan molecules.
a. true b. false
There are phalanges in both the lower limbs and upper limbs.
Answer the following statement true (T) or false (F)