Dallas County Community College

What is not a part of the Cell Theory - Answer The molecules within a cell are alive the process that converts DNA to mRNA - Answer Transcription The process that converts mRNA to protein - Answer Translation The four cells produced in meiosis will have a - Answer n number of chromosomes and will differ genetically from each other what are the reactants of photosynthesis - Answer Carbon Dioxide, water and sunlight which scientists influenced Darwin by his ...

cell division - Answer The continuity of life is based on the reproduction of cells multicellular eukaryotes depend on cell division for what? - Answer Development from a fertilized cell Growth Repair cell cycle - Answer the life of a cell from formation to its own division genome - Answer genome can consist of a single DNA molecule (common in prokaryotic cells) or a number of DNA molecules (common in eukaryotic cells) chromatin - Answer a complex of DNA an...

Name the scientists who first studied cells and mention their contributions. - Answer Robert Hooke: first person to view cells, first person to build a microscope. Antonie van leeuwenhoek: first person to view living cells (bacteria, pond water) .Matthias Schleiden and Theodore Schwann (1830): proposed the cell theory (all living things are composed of cells) still true except for viruses. Who was the first scientist to view cells/build a microscope? - Answer Robert Hooke Who was...

Suppose a young boy is always tired and fatigued, suffering from a metabolic disease. Which of the following organelles is most likely involved in this disease? - Answer mitochondria Which structure is the site of the synthesis of proteins that may be exported from the cell? - Answer rough ER Which of the following is present in a prokaryotic cell? - Answer ribosome Prokaryotes are classified as belonging to two different domains. What are the domains? - Answer Bacte...

endonuclease - Answer an enzyme that cleaves DNA at specific sites, leaves sticky complementary tails gel electrophoresis - Answer Procedure used to separate and analyze DNA or protein fragment by size and charge gel electrophoresis uses - Answer forensics, compare DNA at crime scene Reverse transcriptase PCR - Answer a modification of PCR in which the first round of replication involves the use of RNA and reverse transcriptase to make a complementary strand of DNA. ...

From the cellular respiration and fermentation lab, why are the yeasts breaking down the sugars? - Answer the yeast are breaking down the sugars to produce ATP why will yeast metabolize monosaccharaides at a faster rate than disaccharides - Answer yeast will metabolize monosaccharides faster than disaccharide’s because disaccharides are more complex sugars and must first be broken down into its monosaccharide subunits, therefore taking more time how many NET molecules of ATP ar...

THE MICROSCOPE - Answer Lab Exercise #4. Two types of Microscopes - Answer Stereoscopic/dissecting microscope (10x-30x) Compound light microscope (40x-400x) Microscope we use - Answer Compound light microscope (40x-400x) -use a beam of electrons to form an image of the specimen -two different lenses that magnify an image twice before it is actually seen Cells - Answer -the smallest living units -microscopic -cannot be seen with the naked eye, only microscopes ...

What are proteins? - Answer Polymers of amino acids covalently bonded through peptide bonds into a chain What are the parts of an amino acid? - Answer central carbon single hydrogen carboxyl group amino group R-group {side chain} What is the significance of the R-group {side chain}? - Answer distinguishes one amino acid from another and dictates an amino acid's properties What is an oligopeptide? - Answer less than 50 amino acids What is a polypeptide? -...

Amino Acid - Answer monomer of a protein; has a central carbon or alpha carbon to which an amino group, a carboxyl group, a hydrogen, and an R group or side chain is attached biological macromolecule - Answer large molecule necessary for life that is built from smaller organic molecules carbohydrate - Answer biological macromolecule in which the ratio of carbon to hydrogen and to oxygen is 1:2:1; carbohydrates serve as energy sources and structural support in cells and form...

Hierarchy of Life from smallest to largest - Answer 1. Cell 2. Multicellular Organism 3. Population 4. Community 5. Ecosystem 6. Biosphere What is between cell and multicellular organism? - Answer tissue and organ system Cell - Answer smallest unit of life How many organ systems are there? - Answer 11 organisms - Answer individual living things community - Answer All the different populations that live together in an area Ecosystem - Answer ...