BIO 100 Exam #1 With 100% Correct Answers 2023, Exams of Advanced Education

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BIO 100 Exam #1 With 100% Correct

Answers 2023

Which of the following is NOT a characteristic of all living organisms? - Correct Answer- Multicellular "A change in gene frequencies in a population over time" defines this unifying biological theory: - Correct Answer-Evolutionary Theory All life must maintain some degree of internal constancy or equilibrium, more formally known as: - Correct Answer-Homeostasis Which of the following is NOT a step in the scientific method? - Correct Answer-All are steps of the scientific method Which is the biggest difference between scientific and non-scientific literature? - Correct Answer-Peer-review process The first step in the scientific method is: - Correct Answer-Make observations Energy is required by by all organisms and is utilized to: - Correct Answer-All of the above A pure substance that cannot be broken down into other substances is known as a(n)? - Correct Answer-Element The atomic number of an element is the number of ___ in the nucleus: - Correct Answer-Protons Solutions that accumulate hydrogen (H+) ions and exhibit a pH below 7.0 are known as:

• Correct Answer-Acidic How much more acidic is a solution with a pH of 5 compared to a solution with a pH of 7? - Correct Answer- Which of the following is a trace element? - Correct Answer-Iodine An ion of an element varies in the number of____? - Correct Answer-Electrons This type of chemical bond is seen water (H20): it is very strong and occurs when electrons are shared between atoms. - Correct Answer-Covalent

This type of chemical bond is seen in salt (NaCl): it is strong, but breaks easily in water and occurs when electrons are donated from one atom to another. - Correct Answer- Ionic Which of the following functions does not describe a biological importance of water? - Correct Answer-All are biologically important Which of the following properties allows carbon to form large, complex molecules, making it so biologically important? - Correct Answer-Stable in wide range of temperatures Which of the following is NOT a biological macromolecule? - Correct Answer-Lysosome The primary function of this macromolecule is energy storage and structural support (i.e. cellulose/chitin): - Correct Answer-Carbohydrate Hydrophobic, nonpolar, energy-rich, and diverse describe which group of macromolecules? - Correct Answer-Lipid What is the primary functions of nucleic acids? - Correct Answer-Information Storage What are functions of proteins? - Correct Answer-All of the above Which of the following identifies the monomer of a protein? - Correct Answer-Amino Acid Which of the following identifies the monomer of carbohydrates? - Correct Answer- Monosaccharides Which of the following does not accurately describe phospholipid bilayers? - Correct Answer-Hydrophilic lipid tail The smallest unit of life that can function independently is a(n): - Correct Answer-Cell Which of the following is not one of the first three premises of Cell Theory proposed by Schleiden, Schwann, and Virchow? - Correct Answer-Cells differ in basic chemical compositions You're looking at a cell that is very tiny (-1 um), lacks organelles, and notice that the DNA is free-floating within the cytoplasm. You are likely viewing what type of cell? - Correct Answer-Prokaryotic Cell The "Fluid Mosaic Model" refers to the composition of what structure on a cell? - Correct Answer-Membrane

This is responsible for maintaining cell shape, orchestrating organelle movement, and important in cellular division (hint it is composed by different types of fibers) - Correct Answer-Cytoskeleton Which filament present in cells is integral in cell division/chromosomal arrangement? - Correct Answer-Microtubules This organelle is responsible for protein and lipid synthesis and is divided into a rough and a smooth type: - Correct Answer-Endoplasmic Reticulum Which of the following organelles does not function in cellular digestion? - Correct Answer-Golgi Apparatus This organelle processes incoming vesicles, organizes them, and sends them to their next destination: - Correct Answer-Golgi Apparatus This organelle is only found in plants and is very important in turgor pressure; it also accounts for the extra 40% of volume that organelles encompass in a plant cell. It is also important in functioning in digestion. - Correct Answer-Vacuole All cells (prokaryotic and eukaryotic) have ribosomes, as they are essential in constructing: - Correct Answer-Proteins Which organelle, present in all eukaryotic cells, is essential in breaking down toxic substances and fatty acids? - Correct Answer-Peroxisome Which of the following organelles contains their own, unique DNA? - Correct Answer- Mitochondria This cellular region is generally though of as a watery solution, but is essential for chemical reactions. - Correct Answer-Cytosol/Cytoplasm (T/F) A theory is a tentative explanation for a narrow scope of observations. - Correct Answer-False (T/F) Domain-Kingdom-Class-Phylum-Family-Order-Genus-Species - Correct Answer- False (T/F) Evolution has resulted in diverse, yet unified, living world. - Correct Answer-True (T/F) Hydrophobic solutes are easily dissolved in water. - Correct Answer-False (T/F) Large biological molecules are formed through hydrolysis - Correct Answer-False (T/F) Cellulose is the most abundant polysaccharide on Earth and is largely indigestible.

• Correct Answer-True

(T/F) The rough E.R. is the site of protein synthesis. - Correct Answer-True (T/F) All cells contain ribosomes. - Correct Answer-True (T/F) All cells contain organelles. - Correct Answer-False (T/F) Both mitochondria and chloroplast provide energy for the cell. - Correct Answer- True (T/F) The Endosymbiotic Theory provides an explanation for the rise of eukaryotic cells.

• Correct Answer-True