Realgrades

community - correct answer All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction. interspecific competition - correct answer Competition for resources between individuals of two or more species when resources are in short supply. competitive exclusion - correct answer The concept that when populations of two...

soil texture - correct answer Relative amounts of the different types and sizes of mineral particles in a sample of soil. humus - correct answer Rich, dark organic material formed by decay of vegetable matter, essential to soil's fertility topsoil - correct answer Mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil. soil horizons - correct answer ...

Levels of biological organization - correct answer 1. biosphere 2. ecosystems 3. communities 4. populations 5. organisms 6. organs and organ systems 7. tissue 8. cells 9. organelles 10. molecules biosphere - correct answer all life on earth and all the places where life exists ecosystem - correct answer all the living things in a particular area, along with all the nonliving components of the envir...

Seed - correct answer An adaption of some terresttrial plants consisting of an embryo packaged along with a store of food within a protective coat Alteration of Generations - correct answer A life cycle in which there is both a multicellular diploid form, the sporophtye, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae Lycophyte - correct answer included club mosses...

Evolution - correct answer Changes overtime in a species due to environmental changes Biosphere - correct answer The planet Ecosystem - correct answer Interacting, functioning units (biomes) must be self sustaining Community - correct answer The plants and animals that make up 1 area Population - correct answer All of 1 species living in an area ...

Metabolism - correct answer The totality (all) of the chemical reactions that occur within an organism; Manages the material and energy resources of the cell. Metabolic Pathway - correct answer Begins with a specific molecule(s), which is then altered in a series of defined steps, resulting in a certain product(s). Each step in the pathway is catalyzed by a specific enzyme. Catabolic Pathways - correct answer ...

Eras - correct answer The boundaries of the geological time . Cambrian Radiation - correct answer 544 million years ago; Abrupt origin of most animal phyla. Permian Crisis - correct answer 245 million years ago; 52% of Families were lost: infer that 88% of Genera, 96% of Species were lost. Cretaceous Extinction - correct answer 65 million years ago; 11% of marine families...

Chapter 11 - correct answer Chapter 11 What are the 3 different types of cell signaling? - correct answer Paracrine signaling (nextdoor neighbor) Synaptic signaling -Neurotransmitter (medium distance) Endocrine (hormonal) (long distance) Receptors for signal molecules _____ . -all act via protein kinases -are never found in the nuclues of a cell -may be found embedded in the plasma membrane - correct answer ...

Assume that you are trying to insert a gene into a plasmid. Someone gives you a preparation of genomic DNA that has been cut with restriction enzyme X. The gene you wish to insert has sites on both ends for cutting by restriction enzyme Y. You have a plasmid with a single site for Y, but not for X. Your strategy should be to A) insert the fragments cut with restriction enzyme X directly into the plasmid without cutting the plasmid. B) cut the plasmid with restriction enzyme X and insert the ...

Gregor Mendel - correct answer Augustinian monk and botanist whose experiments in breeding garden peas led to his eventual recognition as founder of the science of genetics () Omnis cellula e cellula - correct answer "Every Cell from a Cell." -- Rudolf Virchow all cells arise from pre-existing cells. character - correct answer a heritable feature that varies among individuals (color) trait - corre...

1) When air temperature exceeds their body temperature, jackrabbits living in hot, arid lands will A) dilate the blood vessels in their large ears. B) constrict the blood vessels in their large ears. C) increase movements to find a sunny area. D) bask in a sunny, exposed area. E) begin involuntary shivering of their skeletal muscles. - correct answer B Topic: Overview Knowledge/Comprehension 2) Which choice best describes a reasonable evolutionary mechanism for ani...

Autotrophs - correct answer Are producers of the biosphere Autotrophs - correct answer Produce their own food Autotrophs - correct answer Supply food for global ecosystem Photoautotrophs - correct answer use light energy to produce organic molecules Photoautotrophs - correct answer Plants, algae, and photosynthetic bacteria. Chloroplast - corr...

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? - correct answer Catabolism Which of the following is (are) true for anabolic pathways? - correct answer They consume energy to build up polymers from monomers Which of the following is a statement of the 1st law of thermodynamics? - correct answer Energy cannot be created or destroyed For living ...

1) The 11 pairs of appendages projecting from the rostral area of star-nosed moles are A) chemosensory structures. B) tactile structures. C) olfactory structures. D) highly sensitive photoreceptors. E) gustatory structures. - correct answer B 2) The correct sequence of sensory processing is A) sensory adaptation → stimulus reception → sensory transduction → sensory perception. B) stimulus reception → sensory transduction → sensory perception...

Why does carbon make four separate bonds, but not more or less? - correct answer Carbon atoms have 4 electrons in their valence shell, which can pair with 4 others to make 8 electrons in 4 bonds. A carbon skeleton will NOT show which type of atom, even if it is part of the molecule? - correct answer Hydrogen Which of the following functional groups could NOT be created in Miller's experiment? - correct answer ...

When biologists wish to study the internal ultrastructure of cells, they can achieve the finest resolution by using - correct answer Answer: C A: a phase-contrast light microscope. B: a scanning electron microscope. C: a transmission electronic microscope. D: a confocal fluorescence microscope. E: a super-resolution fluorescence microscope. Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells? - correct ...

Biology is _____. - correct answer Biological organization (list in order) - correct answer molecules, organelles, cells, tissues, organs/organ systems, organisms, populations, communities, ecosystems In chromosomes, there is genetic material in the form of ______. - correct answer DNA Genes are expressed through ____. - correct answer Central Dogma ______ are properties t...

You are working on a team that is designing a new drug. In order for this drug to work, it must enter the cytoplasm of specific targeted cells. Which of the following would be a factor that determines whether the molecule selectively enters the target cells? - correct answer similarity of the drug molecule to other molecules transported by the target cell In a normal cellular protein, where would you expect to find a hydrophobic amino acid such as valine? - correct...

reductionism - correct answer zooming in at ever-finer resolution. reduces complex systems to simpler components that are more manageable to study emergent properties - correct answer evident due to the arrangement and interactions of parts as complexity increases systems biology - correct answer exploration of a biological system by analyzing the interactions among its parts eukaryotic cell - correct an...

What is the monomeric unit of polypeptides? - correct answer Amino Acids How many varieties of amino acids are there? - correct answer 20 What bond is formed between the monomers of the polypeptide? - correct answer Peptide bonds What is the general structure of an amino acid? - correct answer A polypeptide is a polymer of amino acids. Each polypeptide has a unique linear sequ...