Which of the following scientist-discoveries is mismatched?

A. Griffith-chromosomes.
B. Watson, Crick, Wilkins, and Franklin-DNA structure.
C. Meselson and Stahl-mechanism of DNA replication.
D. Avery, MacLeod, and McCarty-DNA is the genetic material.


Answer: A

Biology & Microbiology

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The eye generally has a large percentage of normal biota present.

Answer the following statement true (T) or false (F)

Biology & Microbiology

A spider and an insect are both arthropods, but they have some different characteristics. Choose the descriptions that are true for BOTH a spider and an insect. Check all that apply.  

_____  They have a head, a thorax, and an abdomen. _____  They have an open circulatory system. _____  Some species are carnivorous and some are herbivorous. _____  They have a chitinous exoskeleton. _____  They have spinnerets. _____  They molt. _____  They are members of Ecdysozoa. _____  They have sensory antennae. _____  They have metamorphosis. 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 arthropods?   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?

Biology & Microbiology

What is the proton-motive force?

a. the force needed to move protons into the inner mitochondrial space b. the amount of energy required to protonate a glucose molecule c. the free energy associated with the removal of hydrogen from NADH d. the combination of a proton and voltage gradient across the inner mitochondrial membrane e. the synthesis of ATP from a proton gradient

Biology & Microbiology

Which of the following is NOT an action of interleukins released by phagocytic cells?

A) stimulation of the release of neutrophils from bone marrow B) increasing endothelial cell synthesis of adhesion molecules C) stimulating the production of acute phase proteins from the liver D) acting as opsonins to facilitate phagocytosis E) acting as endogenous pyrogens to increase body temperature

Biology & Microbiology