The early earth atmosphere was _____. MULTIPLE CHOICE. Choose only one.  a. Reducing and favors biosynthetic reactions b. Reducing, due to absence of carbon dioxide c. Oxidizing, due to abundance of oxygen d. Oxidizing an favors breakdown of molecules

Q: At the end of an enzymatic reaction, which molecule remains uncharged? A. Substrate B. Product C.…

A: Enzymes are biological catalysts. They decrease the activation energy and increase the speed of…

Q: The Miller-Urey experiment simulated compounds present in the atmosphere of early Earth, lightning,…

A: Miller Use four compounds or particle in his experiment these are water, methane, ammonia and…

Q: The oxygen revolution permanently changed Earth’s environment and dramatically impacted the…

A: We are answering first 3 questions. For rest of questions pls repost.     Oxygen evolution is a…

Q: What was a significant result of the Mars Phoenix project?a. culturing bacteriab. verifying waterc.…

A: Mars, which is a planet of our solar system is believed to have conductive conditions for life…

Q: Briefly describe the relationship between photosynthesis and respiration in terms of the reactants…

A: Introduction Photosynthesis is the process by which green plants use sunlight, carbon-dioxide…

Q: Which of the following accurately describes the Hadeon Eon? Earth during the Hadeon Eon closely…

A: An eon is a geological time unit that represents a span of a billion years or more in the Earth's…

Q: The evolution of photosynthesis resulted in a. an increase in the amount of O2 in the atmosphere. b.…

A: Mesophyll cells are the most active sites of photosynthesis. The process in which light energy is…

Q: Sugar digestion (catabolism) van be used as a diagnostic indicator when trying to identify bacteria.…

A: Bacteria are prokaryotic organisms that are found in every sphere of the biosphere i.e. soil, land,…

Q: Investigate and describe how prokaryotic cells photosynthesize without having chloroplasts.

A: This answer is for the first part of the question. In order to get the answer to the second part of…

Q: A. Primary

A: The life on the earth exist with help of energy which is transferred into a food chain or food web…

Q: Which of the following describes the organisms and/or processes that were most influential in the…

A: The earth is one of the eight planets revolving around the sun. It is estimated that earth have been…

Q: What did the biology experiments on the Viking landers discover? A. Although Mars's soil is…

A: The Viking Program consisted of two American space probes, Viking 1 and Viking 2, that were sent to…

Q: Earth’s biota were believed to be relative simple, slow-metabolizing life. During what era is this?

A: There is  a significant change in the earth's atmosphere and the evolution of animals has made it…

Q: Match the structure with the correct form of carbon. coal mine a. carbon reservoir Mediterranean Sea…

A: arbon is a chemical element which is most abundantly available and is a important element for all…

Q: Around the time Eukaryotic Cells began to compartmentalize their reactions, and the chloroplast and…

A: Introduction  Origin of life on earth can be traced back to 3.4 billion years ago and as we now know…

Q: How did life most likely originate in the planet? Choose below.  - Biogeochemical theory - Special…

A: Introduction  Life is eternal and coeternal with matter; it first appeared on Earth at or shortly…

Q: what simple organic molecules were likely the precursors of life? a. water and proteins b. amino…

A: The two important aspects of life are its origin and evolution. The branch of life science, which…

Q: Compare and contrast the physical and chemical conditionson Earth at the time life first arose with…

A: Earth is a planet which supports numerous life system and abiotic factors. Earth formed 4.5 billion…

Q: A few organisms can tolerate andthrive in a wide range of temperatures.Such organisms are called…

A: Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. Most…

Q: Earth’s largest carbon reservoir is______ . a. the atmosphere c. seawater b. sediments and rocks d.…

A: Answer is b.) sediments and rocks.

Q: ummarize the theories on how life on Earth began A. Inorganic molecule form organic molecules. B.…

A: Introduction: Abiogenesis is a scientific theory that explains the origin of life from non-living…

Q: Life originated from the earth’s inorganic atmosphere in the post, but this no longer happens today.…

A: Theories from various scientists propose that in Earth's prebiotic history, simple organic matter…

Q: Choose the most appropriate statement that matches each term. a substance that occurs only or…

A: Here, it is required to select the appropriate sentence for each term.

Q: Which statement describes how heterotrophs depend on autotrophs for survival?   a Autotrophs make…

A: Photosynthesis is the process by which Green plants and organisms carbon dioxide and sunlight to…

Q: What organisms are heterotroph?_____________ A. Organism that makes its own organic compounds using…

A: In the natural world, organisms display a variety of heterotrophic feeding strategies. These are…

Q: Bread is one of the most common type of food that people eat for breakfast every morning. Use your…

A: Three naturally occurring carbon isotopes are carbon-12 is most common (99%), carbon-13 makes only…

Q: In ancient times, earth atmosphere contain no oxygen. Whatvform of respiration do think was used by…

A: Respiration is of two types aerobic respiration and anaerobic respiration.

Q: _______in the stomach of a cow release methane. a. Bacteria c. Aerobes b. Archaea d. Viruses

A:

Q: Earth’s biota were believed to be relative simple, slow-metabolizing life. During what period is…

A: Biota- The different sorts of plant and animal life that can be found in different areas at…

Q: Which of the evolutionary sequences below does NOT represent how chloroplasts were derived?…

A: Mitochondria and chloroplasts probably evolved as separate species from engulfed prokaryotes that…

Q: The sun heats the ground Radiation The warm air rises Convection The ground heats the air Conduction

A: Energy is transferred between the Earth's surface and the atmosphere by radiation, conduction,…

Q: oxygen and carbon dioxide.

A: Introduction  The oxygen cycle and the carbon dioxide cycle (carbon cycle) are two of the…

Q: How would you answer a family member's statement "Climate change is good for plants, they have more…

A: Like other organisms, plants detect and respond to stimuli in their environment. Their main response…

Q: Oceans were a good environment for early organisms because tney O shielded organisms from…

A: According to guidelines we have to answer the first question only so please kindly post the…

Q: ECOLOGY HELP ECOLOGY HELP According to these maps, as temperature and precipitation increases…

A: With climate change,it is observe that ,the temperature of earth increases at a faster pace.This…

Q: What is the molecule produced by mitochondria that is the source of energy for living things

A: Mitochondria is a double membrane-bound organelle. It consists of inner mitochondrial membrane and…

Q: Autotrophs are bacteria that obtain their energy through a-The Sun b-Dead organic material…

A: Autotrophs are able to make their own food from raw materials and energy. Heterotrophs are known as…

Q: Based on what geologists have learned about Earth history, levels of oxygen in Earth's ancient…

A: Glycolysis is the process in which glucose is converted into pyruvate by a 10 step process and every…

Q: Organisms require_____ and_____ to maintain themselves, grow, and reproduce. a. DNA; energy c.…

A: DNA is the hereditary unit. Energy is what we get from the consumption of food. Food provides us…

Q: Based upon your knowledge of photosynthesis and cellular respiration, which of the following types…

A: Photosynthesis is the process by which the plants use water, carbon dioxide and prepare their food…

Q: Which of these events occurred in the Mesozoic era? First mammals First cyanobacteria First bacteria…

A: Mesozoic era has three periods cretaceous, Jurassic and Triassic periods. It is the age of reptiles.

Q: Given that the early atmosphere did not contain oxygen gas, using only the information covered in…

A: Photosynthesis is a process that occurs in plants and also other organisms such as fungi, bacteria,…

Q: Stanley Miller’s classic experiment suggests that ______ ______ of organic compounds may have been…

A: Scientists estimate that the universe is around thirteen thousand eight hundred and twenty billion…

Q: Chloroplasts of green algae evolved from_____ . a. cyanobacteria b. archaea c. red algae

A: Chloroplasts are the cellular organelles in plants and green algae. It is the site of photosynthesis…

Q: Where

A: Introduction:-  The ozone layer is a thin part of the Earth's atmosphere that absorbs almost all of…

Q: Describe at least two ways energy transformed rock matter as Devils Tower formed.

A: Introduction:- Like a granite sentinel, Devils Tower towers over the surrounding grassland and…

Q: When experimental animals are fed different diets and the length of each continuous hibernation bout…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Why do cells go to the trouble of making ATP when they already have glucose molecules? A. glucose…

A: ATP is used in many biological processes as they-  1. Releases energy in small / manageable…

Abiogenesis