- A hypothesis isa widely accepted idea about a phenomenon.the same as a theory.an explanatory idea that is broad in scope and supported by a large body of evidence.Answer a proposed explanation for a set of observations.
- A phospholipid is composed ofAnswer one glycerol molecule linked to one phosphate group and two fatty acids.one fatty acid molecule linked to three glycerol molecules.one fatty acid molecule linked to one glycerol molecule and two phosphate groups.one glycerol molecule linked to three phosphate groups.
- Organic compoundsmust be synthesized by animal cells.always contain carbon.always contain nitrogen.always contain oxygen.
- acilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.transport proteins; downenergy and transport proteins; againsttransport proteins; againstenergy and transport proteins; down
- Which process can move a solute against its concentration gradient?osmosispassive transportactive transportfacilitated diffusion
- Cell theory states thatcells make up living and nonliving substances.cells can be created from molecules spontaneously.all living things are made of many cells.all living things are composed of cells and that all cells come from other cells.
- Which of the following is not a domain?a. Bacteriab. Archaeac. Eukaryad. Prokarya
- Which of the following would you not find in a prokaryotic cell?a. A ribosomeb. A chromosomec. A lysosomed. A nucleoid
- Organic molecules __.a) contain oxygenb) are large molecules, consisting of hundreds of atomsc) are formed by ionic bondsd) involve carbone) are living molecules
- Archaea are composed of ___ cells.animaleukaryoticprokaryoticbacterial
- When a cell pumps Na+ out of the cell, it will typically use __ to provide the energy to run the protein pump.a) sugarb) lipidc) starchd) ATPe) DNA
- Water's surface tension and heat storage capacity are accounted for by itshydrogen bonds.mass.size.orbitals.
- If a cell was making protein to be exocytosed, what would it use and where would you find it?a. Nucleosome, nucleoid regionb. Cytoplasm, Smooth ERc. Ribosome, bound to the Rough ERd. Lysosome, near the Golgi
- Which of the following is not a component of DNA monomers?a) A sugarb) A base featuring nitrogen bondsc) An R groupd) A phosphate group
- Water is __.a polymeran elementheld together by ionic bondsbasica polar molecule
- Which of the following transport mechanisms requires energy input from the cell?a) Diffusionb) Facilitated Transportc) Osmosisd) Active Transport
- Which of the following subatomic particles would be found in a chlorine nucleus?a. Protonsb. Neutronsc. Electronsd. Protons and Neutronse. Electrons and Protons
- Which of the following is not a membrane bound organelle?a. Ribosomeb. Endoplasmic Reticulumc. Golgi Apparatusd. Mitochondriae. Chloroplast
- Which of the following structures would you not find an animal cell?a. A ribosomeb. A chloroplastc. A nucleusd. A Golgi apparatus
- Plant cells form __ to allow them to share water and nutrient molecules with neighboring cells.a. Conjugation Pilib. Endoplasmic Reticulumc. Chloroplastsd. Tight Junctionse. Plasmodesmata