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I need help with this badly, 20 Points for this fam. 1. It is the presence of _______________ that causes the repressor protein to fall off and unblock the gene on the lac operon. 2. An additional cir
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Chemical bonding generates arrangements of electrons that usually resemble the noble gases. The best explanation for this is that noble gases A. are inert. B. have full valence electron shells. C.
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What is the messenger RNA strand that would be made during transcription of this strand of DNA? T-A-C-C-C-C-G-A-G
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What are the effects of renewable energy on biodiversity? PLEASE ANSWER IN A PARAGRAPH PLEASE (20 POINTS)
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Which of the following would you expect to be prominent in osteoclasts?A. Golgi apparatus B. lysosomesC. MicrofilamentsD. Exocytosis
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Reptiles and birds excrete waste as an insoluble white solid that is called uric acid. How does this help them to maintain internal homeostasis in hot climates? A.) by retaining water B.) by conservin
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What vertebrate class conceives their young within the reproductive tract of the mother and, after birth, nourishes them with milk produced by mammary glands? A) Aves B) Amphibia C) Reptilia D) Mam
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For what period of time should the nurse take precautions to prevent bleeding, including applying pressure to puncture sites for 5 minutes, after warfarin (coumadin) therapy has been discontinued?
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At the c locus in horses, chestnuts (sorrels) are cc, palominos are cccr , and cremellos are ccr ccr . in a herd of 10 horses, there are 3 chestnuts, 6 palominos, and 1 cremello. what are the allelic
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The aboveground parts of a plant constitute its ___. A. root system B. shoot system C. cork cambium D. vascular tissue system
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Metals can form two distinct types of bonds with very different chemical and physical properties. For instance, sodium can form metallic bonds with other sodium atoms and ionic bonds with nonmetals. B
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The Thad Cochran national warm water aquaculture center conducts research on genetically modified catfish.
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. If water vapor continued to increase in our atmosphere, what changes would you expect in freshwater lakes? (2 points) Lake temperatures will decrease, but dissolved oxygen in the water will increase
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In which room was the greatest difference between maximum and minimum daily average air pressure observed over the study's first five days?
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Matthew is assigned a project to learn about cellular respiration. He discovers that the Krebs cycle is a ____________ process which occurs in the __________. A) aerobic, cytoplasm B) anaerobic, cytop
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Kelp are multicellular photosynthetic protists that make up kelp forests. These forests are found in the cold nutrient-rich water off the coast of California. They make up one of the most biologically
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Explain how the two compounds (benzyl alcohol and benzoic acid) partition between ether and a naoh solution in the manner that they do. hint: why are they soluble in the layers that they are in, and n
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If the radius of the artery is reduced by 14 % , by what factor is the blood flow rate reduced? assume that all other properties of the artery remain unchanged.
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Genes encoding different proteins in a multimeric enzyme typically show a redundant type of gene interaction.
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A species exists with three color types, (blue, yellow and green). You breed a yellow (bb) individual with a blue (BB) individual, and all the offspring are green. Which trait is dominant? Explain you
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Which of the following is a valid scientific hypothesis ? a. suvs are ruining the climate b. desert mesas are beautiful c. offshore drilling should be illegal d. earth-like planets exist elsewhere i
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Think about water and how it rolls up on a beach. Think of all it’s wualities. Is it alive according to the characteristics of life
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What is an ionic bond? A. the attraction positive ions have for free electrons B. the force that holds the valence electrons to the atom C. the attraction and bonding of ions with equal opposite charg
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this is Made of 1 5-carbon sugar called ribose, a nitrogen-containing compound adenine, and three phosphate groups.
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How is cancer spread through the body? Check all that apply. -through the nervous system -through the blood -through touching organs and tissue
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Do you forget things? Absent-mindedness is an inherited recessive trait. The Punnett square shows the genetic cross for absent-mindedness in the Smith family. If the Smith's have six children, how man
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The major adaptions that are seen in people teeth are related to ______. A. eating B. fighting C. protecting or D. talking
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Which of the following is the standard seeding rate for corn planted in Southwestern drylands? A. 14,500 to 18,500 seeds per acre B. 16,500 to 23,500 seeds per acre C. 28,000 to 30,500 seeds per acre
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What types of biological materials should be available for patents and what are the rights, if any, of the donors of these cells.
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Flower color in a particular plant species is determined by one gene locus. The allele at the locus can code for either red flowers or blue flowers. When two such plants are crossed, however, some of
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A scientist agrees with the scientific consensus that dinosaurs have scaly skin. Then he discovers a new fossil that indicates a dinosaur had feathers. The scientist refuses to consider the new eviden
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What are the raw materials needed for photosynthesis to occur? What are the end products of photosynthesis?
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Which of these metamorphic rocks is chemically changed the most during metamorphism? A. slate B. skarn C. marble D. quartzite
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Protists that move with cytoplasmic extensions are called A. amoebas. B. ciliates. C. dinoflagellates. D. euglenoids.
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What is the purpose of operons in protein synthesis? They transfer the mRNA to the ribosomes for protein production. They unzip the DNA molecule at the beginning of transcription. They contain promote
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What are distinguishing features of animals?A. generally an animal exhibits a definite symmetry, form and shape.B. growth of the body occurs proportionatelyC. reserved food is glycogenD. all of the ab
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If an incision were made distal to the elbow, where would it be located? 1. posterior to the elbow 2 closer to the fingers than the elbow 3 closer to the shoulder than the elbow 4 anterior to the el
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A food chain is a circle. The transfer of energy moves from plant to animals to decomposer and back to plant. What supplies the energy the plants need? A) animals B) sun C) water D) wind
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What are greenhouse gases? Smog Eco-friendly fuels for automobiles Heat trapping gases found in the earth’s atmosphere Gases emitted by industries NextReset
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Which type of tissue has an extra cellular matrix? a. Epithelial b. Connective c. Nervous d. Muscular
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What is the primary function of a lysosome (Powerhouse, Packing and sorting, Recycling center, Control center)
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Minerals are all naturally occurring solid substances with a definable chemical composition. they must also possess ____________.
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The graph shows the annual temperature variations for four cities. Based on the graph, which city most likely experiences as a tropical climate?
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Physical environmental factors for plants include _____ a) predation b) light c) competition d) all of the above
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Which of the following is true about the genotype of the mouse shown below? White mouse A. The mouse must be FF. B. The mouse could be FF or Ff. C. The mouse could be ff or Ff. D. The mouse must be ff
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When sherrington measured the reaction time of a reflex (i.e., the delay between stimulus and response), he found that the response occurred faster after a strong stimulus than after a weak one. expla
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I need help pls 50 points!!! distinguish between directional, stabilizing, and disruptive selection. give examples.
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Due to food scarcity in ancient times, people had to spend _____. a great deal more time than today to cultivate and find food a small amount of time to cultivate and find food the same amount of time
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NEED NOW! Please and thank you! Which of the following correctly describes the importance of the nitrogen cycle? to recycle oxygen-based compounds to replenish nitrogen in the atmosphere to decompose
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Which statement about the central nervous system (CNS) and the peripheral nervous system (PNS) is true?
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