Answer:
D, organisms that survive long enough to reproduce.
Explanation:
C and D are the best answers. Adaptations and skills other than speed and strength contribute to an organism's survival too, so that means it isn't C. Natural Selection is about how an organism must have useful traits to survive to reproductive stage and successfully reproduce, so it would definitely be D.
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Answer:
Explained below.
Explanation:
Each lumbar region of the spine is generally remembered as the lower back which contains 5 vertebrae. And the lumbar region is located between the chest or thoracic. And lumbar spine also typically holds a small internal curve as well.
From the following, the characteristics that belong to the lumbar region are as follows;
* Blunt spinous process
* Large size overall
* Bulky centrum
From the following, <u>the characteristic that does not belong to the lumbar region</u> are as follows;
* Elongated spinous process
... have made it illegal to kill endangered species (poaching)
<h2>Given statement is false</h2>
Explanation:
According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA
Meselson and Stahl did an experiment on DNA replication using E.coli bacteria
- E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
- It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
- Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
- They then measured the density of the DNA using density gradient centrifugation
- This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
- Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
- Each DNA strand act as a template for synthesis of new strand
- Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment
Staphylococcus aureus is a gram-positive bacteria that cause a wide variety of clinical diseases. Infections caused by this pathogen are common both in community-acquired and hospital-acquired settings. The treatment remains challenging due to the emergence of multi-drug resistant strains such as MRSA (Methicillin-Resistant Staphylococcus aureus). S. aureus does not normally cause infection on healthy skin, however, if it is allowed to enter the internal tissues or bloodstream, these bacteria may cause a variety of potentially serious infections. This activity describes the evaluation and treatment of Staphylococcus infections and reviews the role of the interprofessional team in managing patients with these diseases.
