Morningerudite

This is the most superficial layer of the brain meninges. - Answer Dura mater (menix) The ______ fissure separates the cerebrum from the cerebellum - Answer Transverse What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level. - Answer The blood-brain barrier is a diffusion barrier which prevents most particles from entering the central nervous system tissue, keeping the brain and spinal cord separate from general blood circulation. The blood-brai...

Define the concept of universal precautions. - Answer Universal precautions means any and all samples, whether known or unknown, are to be treated as potentially hazardous (or pathogenic) materials While observing an unknown sample of limited amounts, a researcher must determine the following observations: (1) the presence of any motility and (2) its Gram status using the same sample—the liquid sample cannot be divided. Which would you determine first and why? - Answer You must determin...

What is cellular metabolism? - Answer Metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life. What is the primary function of enzymes, and how are they regulated? - Answer Enzymes speed up chemical reactions. Most notably, the enzyme is not consumed during the reaction and can be used repeatedly by the cell. Enzymes can also be regulated by a cofactor such that in the absence of the proper cofactor, enzymes are inactive while in it...

What is cellular metabolism? - Answer Metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life What is the primary function of enzymes, and how are they regulated? - Answer Enzymes speed up chemical reactions. Most notably, the enzyme is not consumed during the reaction and can be used repeatedly by the cell. Enzymes can also be regulated by a cofactor such that in the absence of the proper cofactor, enzymes are inactive while in its...

Which of the following microorganisms are considered to be Eukarya? Select all that apply. Animalia Plantae Fungi Protista - Answer All of them Microorganisms classified as _________ obtain most of their energy by converting light energy into chemical energy. - Answer Plantae

Mendelian inheritance is characterized by three general rules: 1. Except in the case of rare _________, genes are passed unaltered from generation to generation; 2. Each gene obeys Mendel's law of __________; and 3. During crosses, two or more genes obey Mendel's law of independent __________ - Answer mutations, segregation, assortment

Who speculated that cells are living entities and plants are aggregates of cells? - Answer Schleiden Who proposed that all cells originate from other cells? - Answer Virchow Which of these statements is not a part of the cell theory? All cells are replaced

If the simple classification of an organism as a plant or animal is no longer sufficient, why are newly discovered organisms still assigned genus and species names? - Answer Genus and species names designate how organisms are related to each other by determining what group that organism falls into. Even though the means of classification is different than it once was, the genus and species system has been adapted to the modern system of classification and is still a useful way to organize livi...

Structure of Microtubules - Answer rigid, hollow tubes made of tubulin What is tubulin - Answer a dimer of alpha-tubulin (GTP) and beta-tubulin (GDP) How do tubulin dimers form MTS? - Answer they polymerize, assemble mt head to tail so mt has polarity

What are the six levels of organization in the body? - Answer atom, molecule, macromolecule, organelle, cell, tissue, organ, system of organs, and organism. anatomical position - Answer To stand erect with arms at the sides and palms of the hands turned forward