Biology

A stimulus type that occurs within the organisms body is
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You are testing 3 new herbicides, A, B, and C, to control itch grass and to compare the effectiveness of the herbicides with a currently used herbicide, Round-Up, and the treatment with just water. Which of the following is considered as a positive control?
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Which is NOT a characteristic of a simple inherited trait: Select one: a. Influenced by the environment b. Monogenic c. Dichotomous distribution d. None of the above
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You take a human smooth muscle cell and block the release of calcium from the sarcoplasmic reticulum. What effect does that have on contraction of that smooth muscle cell, and why?
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To find out which ingredient the cockroaches are refusing, you can carry out a controlled experiment. Hydramethylnon is dissolved in oleic acid before being mixed with corn syrup to prepare the poisoned bait, so you should test all three ingredients.Suppose you conducted a feeding trial to test each ingredient. In the trial, a set of four agar dishes, three containing all except one ingredient and one with all three ingredients (the control), were weighed and placed 3 cm apart on the kitchen floor in an infested apartment. After two days, the dishes were weighed again to measure food consumption. You then repeated the trial 4 times and averaged the results.Based on the results of the feeding experiment, what conclusions can you draw? Select all that apply.A) Roaches ate about the same amount from the dish with no hydramethylnon as they did from the control dish.B) Roaches ate about the same amount from the dish with no oleic acid as they did from the control dish.C) Roaches ate about the same amount from the dish with no corn syrup as they did from the control dish.D) Roaches are refusing hydramethylnon.E) Roaches are refusing oleic acid.F) Roaches are refusing corn syrup
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The plant ground tissue system consists of three tissues that can be distinguished by which of the following?O a. Cell wall structuresO b. Lysosomal contentO c. Mitochondrial shapeO d. Enzymatic activityO e. Amino acid composition
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2.This photograph was taken in 1989, 9 years after Mount Saint Helens erupted. Compare this photo with the 1983 photo. What has changed? What looks different? How do you think those changes might have come about? Answer: Type your answer here. Click or tap here to enter text.
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Continuous with the outer portion of the nuclear pore, what membrane-bound structure functionsin the synthesis of secretory proteins, integral membrane proteins, or proteins bound for other organelles?A) rough endoplasmic reticulumB) lysosomeC) nucleolusD) mitochondriaE) smooth endoplasmic
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Yellow pea color (A) is dominant to green pea color (a). Smooth pea texture (B) is dominant to wrinkled pea texture (b). If parent #1 is homozygous green and heterozygous smooth and parent #2 is homozygous yellow and homozygous wrinkled, what is the probability that the offspring will have yellow, smooth peas? Enter a number 0100.
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steps that you could use to test a hypothesis
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How many chromosomes do sperm cells and egg cells have?
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What will happen to the species in this ecosystem if the water temperature increases close to the warmest temperature shown on the diagram?
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Need help on this plz help!!20 points)A. Neon, because it has two energy levels with eight electrons in the second levelB. Chlorine, because it has three energy levels with seven electrons in the third levelC. Gallium, because it has four energy levels with three electrons in the fourth levelD. Tin, because it has five energy levels with four electrons in the fifth level
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Polar bears, when they are not hibernating, need an average of 2 kg of fat per day to obtain enough energy to survive. The polar bear's primary food source is seals and they prefer seal blubber over the rest of the animal. If the average seal provides 55 kg of blubber, how many days can the polar bear survive on one seal kill?
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The characteristics of anatomical position includes all of the below EXCEPT:A.The feet are together.B.The face is forward.C.The arms are at the side.D.The palms are prone.
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The treelike fibers that receive information and send it toward the neuron's cell body are called ____
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The diagram shows a food web.Which is the producer?O grasso grasshopperO mousefoxShrewSnakeMouseGrasshopperRabbitMark this and returnSave and ExitNextSubmit
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How is the amount of daylight related to the suns apparent path?
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This satellite image shows a new housing development, which has caused forest fragmentation. Based on the image, if other new housing developments are built in nearby areas and the forest fragmentation continues, what will MOST LIKELY be harmed?a. the animal populationb. the manufacturing industryc. the human populationd. the agricultural industry
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species which reproduce asexually lack genetic variety. why does genetic variety benefit a species
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The lumper potatoes that were grown in Ireland during the 1800s were essentially clones of one another. They all had the same genetic makeup. So, when a potato blight disease began infecting the potatoes, it spread to all potatoes equally. How could greater genetic diversity have lessened the devastation of the potato blight? A. Some potatoes would be more likely to have a genetic resistance to the disease and survive. B. The potatoes would have been able to trade genes so that they could survive the disease. C. More of the potatoes would have been edible varieties. D. None of the potatoes would have been infected by the disease.
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50 POINTSWhich form of government was often conquered because they did not have the resources to protect themselves? A. city-state B. theocracy C. monarchy D. dynasty
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Phenylketonuria (PKU) is an autosomal recessive genetic disorder. The frequency of homozygotes with this disorder is 0.0001. What percentage of the population is heterozygous?
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Which process of cell division produces cells necessary for reproduction?
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