What's the difference between null and obligate?

Null


Definition:

  • (a.) Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
  • (n.) Something that has no force or meaning.
  • (n.) That which has no value; a cipher; zero.
  • (v. t.) To annul.
  • (n.) One of the beads in nulled work.

Example Sentences:

  • (1) Measurements of acetylcholine-induced single-channel conductance and null potentials at the amphibian motor end-plate in solutions containing Na, K, Li and Cs ions (Gage & Van Helden, 1979; J. Physiol.
  • (2) DR(+) cells, however, showed no change in percentage and a lesser drop in absolute numbers, suggesting an increase with advancing disease of DR(+), Ig(-) null cells, which may represent immature B cell precursors.
  • (3) In this report we describe an improvement upon the design by Stanton and Lightfoot for a simple photographic null method to determine the kVp of a diagnostic region x-ray source.
  • (4) At least two (Rh null and the McLeod type) are responsible for congenital hemolytic disorders.
  • (5) (2) Sequences of brightness steps of like polarity (either increments or decrements) elicit positive and negative motion-dependent response components when mimicking motion in the cell's preferred and null direction, respectively.
  • (6) The analysis also involved statistical tests of a modified null hypothesis, the generation of confidence intervals (CIs) and a meta-analysis.
  • (7) The null potential of both responses became more and less negative with a decrease and an increase, respectively, in the extracellular potassium concentration.
  • (8) The null mutation of algR was generated in a mucoid derivative of the standard genetic strain PAO responsive to different environmental factors.
  • (9) Endoneurial fluid pressure (EFP) was recorded by an active, servo-null pressure system after a glass micropipette was inserted into rat sciatic nerve undergoing wallerian degeneration.
  • (10) In thymo-deprived mice (nude mice and B mice) the percentage of null cells increases during the stage of regeneration, and B mice develop a large number of Ig +-bearing cells.
  • (11) Alkaline phosphatase activity was elevated in the lymphocytes from T-CLL, cord blood and tonsils and the blast cells from Null-ALL.
  • (12) Analysis of ldlA cells has identified three classes of mutant alleles at the ldlA locus: null alleles, alleles that code for normally processed receptors that cannot bind LDL, and alleles that code for abnormally processed receptors.
  • (13) Putative null sup-38 mutations cause maternal-effect lethality which is rescued by a wild-type copy of the locus in the zygote.
  • (14) Null cells of patients with hypoplastic anemia did not produce erythroid colonies under any culture conditions.
  • (15) Comparison of simulated versus actual inheritance data demonstrates that the so-called null structural alleles actually produce functional globins.--The genetic controls in Peromyscus may be analogous to those in primates.
  • (16) A null zone and associated sudden phase-reversal of RSA were observed in stratum lucidum of CA3.
  • (17) When the stimulus is placed at a position approximately 80 degrees dorsal to the eye axis, there is no response; this area is called the null region.
  • (18) Northern blot analysis showed that Adh-1 mRNA was synthesized at wild-type levels in immature seeds of the null mutant, but dropped to 25% in mature seeds.
  • (19) Two tumours were null cell adenomas with PIs less than 0.1 and 0.2%.
  • (20) Thus this methodology offers the potential to study naturally occurring ADH electromorphs and null alleles independent of enzymatic activity assays.

Obligate


Definition:

  • (v. t.) To bring or place under obligation, moral or legal; to hold by a constraining motive.
  • (v. t.) To bind or firmly hold to an act; to compel; to constrain; to bind to any act of duty or courtesy by a formal pledge.

Example Sentences:

  • (1) However, he has also insisted that North Korea live up to its own commitments, adhere to its international obligations and deal peacefully with its neighbours.
  • (2) Shorten said any arrangement needed to be consistent with international obligations, with asylum seekers afforded due process and their claims properly assessed.
  • (3) And this has opened up a loophole for businesses to be morally bankrupt, ignoring the obligations to its workforce because no legal conduct has been established.” Whatever the outcome of the pending lawsuits, it’s unlikely that just one model will work for everybody.
  • (4) If we’re waiting around for the Democratic version to sail through here, or the Republican version to sail through here, all those victims who are waiting for us to do something will wait for days, months, years, forever and we won’t get anything done.” Senator Bill Nelson, whose home state of Florida is still reeling from the Orlando shooting, said he felt morally obligated to return to his constituents with results.
  • (5) 45Calcium has been used to compare the kinetics for the transport and bioaccumulation of this regulatory cation in keratinocyte cultures of a kindred with HPS (i.e., one HPS homozygote, one HPS obligate heterozygote, one normal family member, and healthy adult controls).
  • (6) The department will consider the judgment to see whether it is obliged to rerun the consultation process.
  • (7) Physicians have an obligation to ensure that parents make a well-considered decision, and to provide them with counsel and support.
  • (8) As he told us: 'Individual faults and frailties are no excuse to give in and no exemption from the common obligation to give of ourselves.'
  • (9) Organisms of the genus Bacteroides represent the major group of obligate anaerobes involved in human infections.
  • (10) Considerations of different ways of obtaining informed consent, determining ways of minimizing harm, and justifications for violating the therapeutic obligation are discussed but found unsatisfactory in many respects.
  • (11) As commander in chief, I believe that taking care of our veterans and their families is a sacred obligation.
  • (12) A 20% discount will save the average first-time buyer £43,000 on a £218,000 home (the average cost paid by such buyers), which would leave a revenue shortfall of £8bn from income if current regulatory obligations had been retained on the 200,000 homes.
  • (13) Justice Hiley later suggested the conduct required by a doctor outside of his profession, as Chapman was describing it, was perhaps a “broad generality” and not specific enough “to create an ethical obligation.” “It’s no broader than the Hippocratic oath,” Chapman said in her reply.
  • (14) Asked by Marr if he knew if Ashcroft paid tax in this country, Hague said:" I'm sure he fulfils the obligations that were imposed on him at the time he became …" Marr: "Have you asked him?"
  • (15) These species are all obligately anaerobic, asaccharolytic, and generally nonreactive, and they grow poorly and slowly on media commonly used to isolate anaerobic bacteria.
  • (16) According to Swedish law, couples who are planning to marry are obliged to publish their address.
  • (17) In the present report we summarize our data on 144 obligate female carriers.
  • (18) But whether it arose from religious belief, from a noblesse oblige or from a sense of solidarity, duty in Britain has been, to most people, the foundation of rights rather than their consequence.
  • (19) No serious side effects were reported and none of the patients was obliged to terminate treatment because of side effects.
  • (20) This paper argues that although this is true of some types of obligation, including the ones discussed by Professor Kluge, it is by no means true of all.