Biology

7. Which of the following is NOT found in bacteria? *a) Cell wallb) Membrane bound nucleusRibosomed) Plasma membrane
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HELP ASAP i need this to pass my gradethis is for science, and if i get the questions right, I pass, but the teacher never taught us the lesson, idrk y. so i really need help:( Im giving away 11 points so please give me your best answers ;)1. As an astronaut travels from the surface of Earth to a position that is four times as far away from the center of Earth, based on the Law of Gravity which of the following statement is true?a. mass remains the same and the gravitational pull from Earth decreasesb. weight remains the same and the gravitational pull from Earth changesc. weight increases and the gravitational pull from Earth stays the samed. mass decreases and the gravitational pull from Earth increases2. A satellite is sent into orbit around the Earth, In which of the following situation would the gravitational force be the greatest?A. 1200 lb satellite orbiting 150 miles above Earths surfaceb. 850 lb satellite orbiting 150 miles above Earths surfacec. 850 lb satellite orbiting 1500 miles above Earths surfaced. 1200 lb satellite orbiting 1500 miles above Earths surface3. High and low tides are the regular pattern of rising and sinking ocean-water levels. They are caused when the suns gravity and the moons gravity pull on ocean water. The moons gravity has a greater effect on Earths oceans than the suns gravity. Why would the moon have a greater effect than the sun?a. The moon has less mass than the sun.b. The moon is closer to Earth than the sun.c. The moon is not as hot as the sun.d. The moon has less mass than Earth.4. Which statement about the universality of gravity is false?a. The gravitational force between two objects depends only on their masses.b. Any two objects that have mass also have a force of gravity acting between them, no matter how far apart they are.c. The gravitational force between two objects increases if the objects move closer together.d. The gravitational force between two objects increases if mass is added to one object.
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HELP.. _____ immunity occurs when a person's immune system responds to an antigen.
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PLZ HELP WILL GIVE BRAINLIESTAs the index of refraction of the second medium increases, what happens to the angle of refraction of the light as it passes through? Are the light rays bent more or less?
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Why is it essential that threatenedspecies compete for resources successfully
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when farmers select animals or plants to use for breeding they look for?
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which of the following is a renewable resource?A. SunlightB. Natural gasC. CopperD. Coal
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Which represents a force pair?A. A golf club hits a golf ball. Gravity pulls the ball back down to Earth.B. A book pushes down on a table, and gravity pulls the book toward the floor.C. A boy's foot pushes down on a bicycle pedal. The pedal pushes up on his foot.D. A person's foot pushes on the floor, and the person's weight pushes on the floor.
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Select the correct answer.which tissue is most likely to transport dissolved sugar?A. sclerenchymaB. collenchymaC. parenchyma
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A researcher attempts to use a segment of ribosomal RNA as a molecular clock to calculate the date of the last common ancestor of two species. He finds that the two species diverged from a common ancestor 150 million years ago. These particular species have abundant fossil records that strongly suggest that these species diverged 100 million years ago. Which of the following answer choices best describes a reason for the discrepancy in the date of the last common ancestor of these species?A. Ribosomal RNA is not a reliable molecular clock and should not be used for dating.B. The neutral mutation rate used in calculating the last common ancestor date may not have been accurate.C. It is highly likely that the two organisms did not share a common ancestor, so the results are invalid.D. A large portion of the ribosomal RNA is not vital to survival, so it is not likely to be well preserved.
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The ability to do work or cause change is calledenergyO forceO powerOwork
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Help please I need a. and b. For number 2
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Thick fur to stay warm is it physical or behavior adaptation
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Which physical structures are present in amphibians, but not in reptiles, when they first hatch?
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Fossils of a species of bear are found in layer 5. Which layer is most likely tohave organisms that lived at the same time as the bear species?
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match each term to its definition
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Which did Kepler notice about planetary motion that caused him to propose Keplers first law of orbital motion?Answer is the distance to the sun varies.I do not understand it. Can you please explain? Thank you.
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A population of deer mice was introduced into a desert ecosystem. Being dark-colored, the deer mice stood out in the sand and were easy prey for predators. Over a few years, the color of the mice changed from dark brown to light brown. What role does natural selection play in this example?
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Given the following phylogenetic tree, which evolutionary event occurred most recently? A.) development of different forms of symmetry.B.) development of tissues.C.) each of these traits evolved at the same time.D.) protostome and deuterostome development.
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Mining leads to a reduction in because it destroys by uprooting forests and demolishing mountainsides.
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DNA is made of four different bases: _______, _______, _______, and ______. A. B. C. D A, C, G, T A, C, G, Uwho ever answers this question get 25 points
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GUYS PLS HELP!!!!Thank u
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Anybody know any pros and cons about spaceXs environment
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Just a reminder to take a break! Your brain is hurting and you need some water! Use this app to understand not to cheat too!
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