Which statement BEST describes coenzymes? Coenzymes render enzymes inactive and prevent chemical reactions from occurring in...
14. A chemical which is able to prevent chromatid separation is added to a cell culture. Which phase of mitosis would be most affected? anaphase prophase telophase G1 G2 15. In a cell which has started prophase of mitosis, there are times as many chromatids as the number of total chromosomes in that same original parent cell during G1. two three four six 17. Which of the following best describes the key process occurring with formation of bivalents (chiasma) during...
1)Which statement about enzymes is TRUE? a)Enzymes are the reactants in a chemical reaction b)Enzymes catalyze specific reactions c)Enzymes' functions require inhibitors d)Enzymes are the products in a chemical reaction 2)Active transport ________. a)is a type of facilitated diffusion b)moves solutes with their concentration gradient c)can involve the transport of ions d)does not use ATP as an energy source 3)What is the chromosome composition of a normal human female? a)44 autosomes, 1 X chromosome, and 1 Y chromosome b)46 autosomes,...
D Each enzyme is specihic of and because its shape catalyzes on certain reactions. The chemical reactions taking place in a cell will most likely speed up if the 3. A genetic material stops replicating. B the size of the cell increases. C the enzymes involved become inactive. D the concentration of the reactants is increased. 4. Enzymes A are able to heat up molecules so that they can react B provide CO2 for chemical reactions. C are biological catalysts....
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 00 OA Figure 2.1 Using Figure 2.1, match the following: 1) Tertiary (protein) structure, 2) Monosaccharide 3) Nucleotide 4) Lipid 5) Functional protein 6) Polymer 7) Polysaccharide TRUE FALSE. Write T if the statement is true and F if the statement is false, 8) Final preparation for cell division is made during the cell life cycle subphase called G2. SHORT ANSWER. Write the word...
N During the light reactions of photosynthesis, chlorophyll absorbs energy from sunlight. This energy is hused to Pe P Select one: O a split water to produce O2 and high-energy electrons O b. convert carbon dioxide to sugar O c. convert sugar to carbon dioxide and water O d. synthesize cell molecules like cellulose Question Not yet How do we derive energy from fats? Points ou Flag Select one: a. Fat can provide energy in the form of NADH and...
30. Harmful mutations in the mitochondrial genes coding for the electroe transport system would most atfect which of the processes? Choose the best answer A. oxygen diffusion ito red blood cells B. urine flow out of the urethra C. rapid beating of a hummingbirds wings D. formation of the phospholipid bilayer from free phospholipids E. the Calvin cycle CSLO6: AN 31. A specific poison blocks H' transport across the inner membrane of the mitochondria How will this directly affect the...
1. Which of the following are the sites within the human body where carbon dioxide and oxygen are exchanged? A. Alveoli B. Arteries C. Synapses D. Venules 2. Which of the following describes the most important reason for repeating an experimental investigation? A. To verify the validity of the original findings B. To expand upon the original investigation C. To manipulate the independent variable D. To attempt to disprove the hypothesis 3. Lithium has an atomic number of 3 and...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...