What is its atomic number? Fewer atoms per gram (The more mass an element has, the fewer atoms will be required to make up a gram. It begins with a look at the chemical reaction that produces soap and then examines the chemical composition of a wide variety of lipid types. Which of the following statements about the properties of life is false? Some protists are photosynthetic. The activation of S-Cdk helps prevent DNA replication occurring more than once each cycle. a) The DNA double helix is coiled around a common axis know as the axis of symmetry b) The hydrophilic deoxyribose-phosphate backbone of each chain is on the outside. e) suppress expression of MHC class I molecules on host cells. e. The activation of S-Cdk initiates DNA replication. False. Which of the following statements about operons is false? The basic chemical building blocks for complex biological molecules must have originated in outerspace. The approximate atomic mass of each element is listed next to it. b) enter host cells by endocytosis. Random electron movement creates short-lived attractions, Ions are two main types: cation which are ___, and anions which are ___, Match each type of chemical bond with the correct description, -Ionic bond - Bond between a cation and an anion, Nitrogen has three unpaired electrons in its outer shell. Instead they were deflected backward because they collided with the ___ of an atom, The region of space surrounding an atomic nucleus in which there is a high probability of finding a ___ is called an orbital, Which of the following best describes a contemporary model of electron movement within atoms, Electrons move in orbitals, although their exact location cannot be precisely predicted in these orbitals, In an atom, the s orbitals have a ___ shape, and the p orbitals have a ___ shape, Within the first electron shell, ___ pair of electrons can be found, within the second electron shell, up to ___ pairs of electrons can occur, Match the energy content of electrons to their respective orbitals. Which of the following statements about proteins is false? The region enclosed by the inner membrane is termed the matrix. Carbon has six electrons. 8) Which of the following statements about the SRY gene is false? a. Sometime the original intent behind genetic engineering experiments is not for scientific purposes. Which of the following statements are true of a nonpolar covalent bond? Study 128 Biology Exam 2 flashcards from sylwia k. on StudyBlue. A. osmosis B. passive transport C. active transport D. facilitated diffusion Which of the following statements regarding plasmodesmata is false? The allow carbon dioxide to enter the leaf. Which of the following solutions contains the highest concentration of protons? The structural genes in the operon are either all on or all off at a given time. c) The hydrophobic nitrogen bases are stacked inside. This process uses NADH and FADH2 to produce ATP oxidative phosphorylation c. Gastrulation establishes three germ layers (ectoderm, mesoderm, and endoderm). when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. Biology is the natural science that involves the study of life and living organisms. B) Anabolism involves the synthesis of larger molecules from smaller ones; catabolism involves the breaking down of larger molecules into smaller ones. A. They consist of a cluster of genes with a single promoter c. Their DNA is transcribed into a single molecule of mRNA. Nitrogen contains seven protons, seven neutrons, and seven electrons. Genetically engineered crops are sometimes referred to as "Frankenfoods" because: They are made from pieced together genes like Mary Shelley's monster was made of cobbled together body parts. A) All organisms have the ability to take in energy and use it. Which of the following statements about the sulfur cycle is FALSE? If the pH of a solution is 6, what is the concentration of protons? C) The cytoskeleton is composed of three types of fibers: microfilaments, microtubules, and intermediate filaments. A. The solution with the lowest proton concentration should be placed at the top of the list, High specific heat, surface tension, and cohesion are several properties of water involving ___ bonds, Molecules are likely to dissolve easily in water if they contain what type of bonds? Which of the following describes a negative feedback loop? b. Production of genetically engineered biological weapons for military testing. D. They are an important site for energy production in cells. C. They contain DNA and ribosomes. Cram.com makes it easy to get the grade you want! The kidneys, illustrated in Figure 1, are a pair of bean-shaped structures that are located just below and posterior to the liver in the peritoneal cavity.The adrenal glands sit on top of each kidney and are also called the suprarenal glands. Mass will be the same, but their weight will be different. Which one of the following statements about gluconeogenesis is false? These mice have had certain genes disables to see what those genes did. Splicing takes place in the nucleus.D. Infect with genetically altered Agrobacterium. The oxygen cycle is relatively simple. Which of the following statements are true of a polar covalent bond? Which of the following cellular structures cannot be used to support this view? d. Protists include both unicellular and multicellular species. Which type of subatomic particle is found outside the nucleus, An element is made up of two or more types of atoms, Due to the presence of protons, an atoms ___ has a net positive electrical charge. Which of the following statements about fibers is FALSE? Ozone is a damaging pollutant close to the ground. If a person travels from the Earth to the Moon, which has less gravitational pull, how will his/her mass and weight be affected? Which type of chemical bonds are easily broken in water? The gametes are the diploid phase of the life cycle. Choose all that apply. Isotopes of the same element differ in their number of. What percentage of corn, cotton, soybeans, and alfalfa grown in the US are genetically engineered strains? Which of the following statements about enzymes is FALSE? Kidneys filter blood and purify it. It depends on the force of gravity on a column of water. a. Gastrulation occurs after implantation. Splicing produces mature mRNA by removing exons and joining introns together.E. A. a polypeptide B. a protein C. a ribosome D. a zinc atom Which of the following processes can move a solute against its concentration gradient? A) is reinforced with C-shaped cartilages B) alters its diameter in response to the autonomic nervous system C) contains many mucous glands D) is reinforced with D-shaped cartilages E) is lined by pseudostratified ciliated columnar epithelium Problem: Which of the following statements regarding RNA splicing is false?A. The burning of fossil fuels results in the emission of a sulfur contain to acid rain Cellular respiration is an important metabolic process that moves su organisms into the atmosphere the sulfur cycle Sulfur moves from the earth into … This technique is called: The first drug to produce by a genetically engineered organism was: Most genetically engineered drugs are produced by: Scientists genetically modified zebra fish to give off a green, red, or orange glow. Splicing is catalzed ribozymes in the spliceosome. E. None of the above. The activation of S-Cdk helps prevent the onset of M-phase. They may. Which of the following statements regarding the early history of life is TRUE: a. Fibers are indigesMble proteins found in plants. B. Rank each state of water in order of increasing density, starting with the least dense state, When water is heated, the rate at which ___ bonds break increased, and water molecules are converted to the ___ state, Match each property of water with the biological significance, -High heat of vaporization- Allows animals to cool themselves through evaporation. A) The cytoskeleton helps to support cells. C. Soluble fiber can help regulate blood sugar. Which of the following statements about S-phase are FALSE? Which of the following statements are false regarding fossils? Which of the following is NOT a modified leaf? Place the element with the most atoms per gram a the top and the element with the fewest atoms per gram at the bottom of the list. a) colonize the skin. Which of the following statements are true of a polar covalent bond? 61) Which of the following statements about the cytoskeleton is false? b) It consists entirely of the reactions of glycolysis, operating in the reverse direction c) It employs the enzyme glucose 6-phosphatase d) It is one of the ways that mammals maintain normal blood glucose levels … A. E. They contain stacked internal thylakoid membranes. Why is the atomic mass of carbon reported in the periodic table slightly greater than its predicted mass? An element with a larger mass contains ___ an element with a smaller mass. If you add H4 ions to a solution, it becomes more, Each change of one pH unit represents a ___ difference in H4 concentration, A base will release ___ ions when dissolved in water, A solution at PH 5 is said to be ___ because it contains more ___, A substance that absorbs hydrogen ions in solution is called. Plant and animal cells don't naturally take in foreign DNA. The calvin cycle occurs in the chloroplast compartment called the: The chemical formula for a photosynthetic reaction is: Water + CO2 + Sunlight --> sugar + oxygen. They provide energy for the reaction to occur They can be reused multiple times Their activity varies with pH &temperature They reduce the activation energy of a reaction The speed of the reaction increases with both enzyme and substrate concentration d. Gastrulation is a key part of morphogenesis. A) Metabolism refers to all of the chemical reactions that take place in living cells. An atom's ability to form a covalent bond is dictated by the number of its ___. a. proteins are composed of amino acids b. different proteins are different due to different combinations of amino acids used in each type of protein c. dietary protein from animal sources better matches the amino acid needs of humans compared to dietary protein derived from plants sources d. proteins are made of … One such set of mice are known as "knockouts." There are risks and potential dangers associated with these benefits. An oxygen molecule (02) contains a double bond, in which a total of ___ electrons are shared, Which of the following covalent bonds are nonpolar? Within an atoms structure, electrons can be found: Select all of the following that are true about atoms that have partially filled energy shells, What type of subatomic particle occurs in each different element in a unique number and is therefore used to identify specific elements, Within an atom ___ and neutron particles have nearly equal masses, while ___ have a much smaller mass, How many types of atoms can be found in a single element, An atom or ion is most stable when its outermost shell is occupied by its full complement of, The ___ of an atom is a measure of tis ability to attract electrons when in a bond with another atom, An element atomic ___ is based on the protons and neutrons it contains, while an element's atomic ___ is based only on the number of protons, Arrange the following solutions in order of increasing proton concentration. d. They are the units of transcriptional regulation in prokaryotes. D. Insoluble fiber can help regulate bowel movements. Elements in the same chemical group have the same bonding properties for which reason? All of the following statements about the sensorimotor stage of development are true except one. B) Once laid down, the elements of the cytoskeleton are fixed and remain permanently in place. Study Flashcards On Biology off of Quizlet at Cram.com. Fats, oils, waxes, steroids, certain plant pigments, and parts of the cell membrane – these are all lipids. A potential risk from this project is that: people who are allergic to daffodils may become allergic to golden rice if the proteins that causes the allergy are introduced. Which of the following statements about xylem is incorrect? The outer layer of cells is called the epicardium, of which the second layer is a … Learn vocabulary, terms, and more with flashcards, games, and other study tools. d) All of the Above All the blood in the human body is filtered many times a day by the kidneys; these organs use up almost 25 … A) In the absence of SRY, an embryo will develop as male B) SRY is activated about 6 weeks into development and causes differentiation of the undeveloped gonads C) SRY is a transcription factor needed for male-specific gene expression D) SRY stands for sex-determining region Y gene, and is located on … Take up the quiz below and find out more. D) All organisms have the ability to maintain a constant internal temperature. The gametes are the haploid phase of the animals life cycle. The original intention for creating these GloFish was to: help scientists see internal structure better. Search. C) All organisms have the ability to reproduce. 6.022 x 10^23 particles equals one ___ of a substance, A mole of any substance contains the same number of particles as, Rutherford hypothesized that if the positive charge of an atom was evenly dispersed throughout the atom, a beam of alpha particles would be deflected by a sheet of gold foil because. By mass, the most abundant element in living organisms is: ___ is the element which plays an important role in the transport of oxygen in the blood of vertebrates. c. Although protists are diverse, they form a single clade. 3. Which of the following statements about protists is False? Which of the following statements about the concept of natural selection is false? What is the maximum number of covalent bonds that a nitrogen atom can form with other atoms while still remaining uncharged, Positively charged protons (h4) and negatively charged hydroxide (oh) ions, A solution in which water is the solvent is called a ___ solution, The ___ of a solution is the negative base 10 logarithm of the H4 concentration of the solution. b. Which of the following statements is FALSE? The inner wall of the heart has a lining called the endocardium.The myocardium consists of the heart muscle cells that make up the middle layer and the bulk of the heart wall. Select all that apply, Separating the two strands of a DNA molecules requires energy because the two strands are held together by many___ bonds, True or False: Van der Waals forces are stronger than hydrogen bonds. Select all that apply, An element's atomic ___ is based on the protons and neutrons it contains, while an element's atomic ___ is based only on the number of protons, An element's atomic number is based on the number of ___ it contains. B. when blood sugar is too low, the body sends … In the golden rice project, Potrykus and Beyer inserted the pay gene from the daffodil into the rice genome. Fossils can form with the same frequency in any environment. Splicing is performed by the spliceosome.B. a. glycolysis can occur with or without oxygen glycolysis occurs in the mitochondria glycolysis is the first step in both aerobic and anaerobic respiration glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate. Start studying Biology. Which of the following examples of genetic engineering would have the most potential danger to society? inserting genes from a petunia into a carnation in order to create a blue carnation. The rate of oxygen produced through photosynthesis is largely balanced by the amount used by organisms. Even though it requires energy to change water from a liquid to a gas, some water molecules break their hydrogen bonds at an ordinary temperature (evaporated) by: The attraction between water molecules at the surface of a liquid is called: A substance that released hydrogen ions into solution is called a, -The rate of hydrogen bond breaking slows, What property of water makes it a good solvent, When water vaporizes at an ordinary temperature, the process is knows as, Select all of the following that describe molecules that only have hydrophobic regions, The concentration of a liquid is defined as the amount of ___ dissolved in a unit volume of solution. d) induce apoptosis in infected host cells. What identifies "knockouts" from other genetically engineered mice? 11. which of the following distinguishes one such experiment? Its atomic mass included the number of protons and the number of ___. It is a broad and complicated, but with enough practice and reading, it is more than interesting. Because of the presence of a small amount of heavier isotopes. Which of the following substances could be a cofactor? 6) Which one of the following statement is true regarding the DNA double helical structure? What made Agrobacterium important to Potrykus and Beyer's experiment? Question 10 options: Animals obtain needed sulfur by eating other animals or plants. Predict the maximum number of bonds in which the new element can participate, True or False: Molecules that contain covalent bonds are rigid, inflexible structures, An atom with a single unpaired electron in its outer shell is a. -Electrons are shared equally between the two atoms, Electronegativity differences between atoms dictate the polarity of molecules by, Influencing whether covalent bonds are polar or nonpolar, In a polar covalent bond, the shared electrons are closer to the nucleus of the atom with, In a water molecule (H20) each hydrogen atom has a partial ___ charge, and the oxygen atom has a partial___ charge, They hydrogen bonds between water molecules form between, An oxygen atom on one water molecule and hydrogen atom on a second water molecule, A hydrogen bond forms when a hydrogen atom with a partial ___ charge becomes electrically attracted to an electronegative atom with a partial ___ charge, Rutherford proposed from his gold foil experiment, That atoms have a small, positively charged nucleus, If the positive charge and mass of an atom are localized in one compact area of an atom, then most positively charged alpha particles would be expected to, In Rutherford's experiment, a small percentage of alpha particles did not pass through the gold foil. True or False: Van der Waals forces are stronger than hydrogen bonds. Which of the following statements about the oxygen cycle is FALSE? An atom's ability to form a covalent bond with another atom depends on how many: How many electrons are shared in a double bond? Quickly memorize the terms, phrases and much more. allows plant to grow taller to compete for sunlight. Which of the following techniques can be used to transform plant cells but not animal cells? It Is Cause By The Organism Treponema Pallidum The First Sign Of Infection Is A Chancre Sore It Is Characterized By Primary, Secondary, And Tertiary Stages Of Disease It Is Classified As A Gram Positive Streptococci It Is A Sexually Transmitted Infection Or Disease Learn vocabulary, terms, and more with flashcards, games, and other study tools.
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