In 1838, a German botanist, M.I.Schleiden studied the plant cells and emphasized that "cells are organisms and entire animals and plants are aggregations of these organisms arranged according to definite laws. "In 1839, another German zoologist T. Schwann stated "we have seen that all organisms are composed of essentially like parts namely of cells." The deductions of the two microscopists (Schleiden and Schwann) formed the basis of what came to be known as the cell theory. The cell theory holds that all living matter, from the simplest of unicellular organisms to very complex higher plants and animals, is composed of cells and that each cell can act independently but functions as an integral part of the complete organism.
Krebs cycle produces all of the following chemicals except:
A) NADH
B) ATP
C) oxygen
Question 27
Krebs cycle occurs in the ___ of a eukaryotic cell
A) matrix of the mitochondrion
B) cristae membranes of the mitochondrion
C) nucleus
D) cytoplasm
The polarity of water describes the unequal sharing of electrons. What can you expect to find in a water molecule?
A ionic bonds
B negative charges only
C partial positive and negative charges
D positive charges only
your answer is A ionic bonds
Witch pair of nitrogen bases will form a bond in a dna molecule?
DNA consist of fur kinds of nitrogenous base: Adenine (A), thymine (T), guanine (G), and cytosine (C). The DNA molecule is a double helix and consist of two strands of smaller molecules called nucleotides wrapped around each other.
Adenine and guanine have a double ring and are called purines. The base in the two strands always forms a specific base pairs. This means that adenine and guanine similarly bind in the other strand.
Hope you have a great day, keep asking questions!
In the DNA
Adenine makes bond with thymine
cytosine makes bond with guanine
ExplanationAccording to the discovery of Watson and Crick, DNA is the double helix structure contains two ladders like strands which are twisted with each other to make the structure stable with better Hydrogen bonding. In this helix, DNA consists of four types of Nitrogenous bases which play their role as the code of the genes. These Nitrogenous bases consist of Adenine, Thymine, Guanine and Cytosine. Adenine bonds with thymine through double hydrogen bonding and guanine with cytosine through triple hydrogen bonds with cytosine.
Which statement accurately describes asexual reproduction? It always involves two parents. It is the type of reproduction most common to animals. It produces genetically different offspring. It produces offspring that are genetically identical to the parent
Answer:
D.) It produces offspring that are genetically identical to the parent.
Explanation:
Edg 2021 I got it correct
Aluminum cans may be collected and processed into new aluminum products over and over again. This illustrates that aluminum is a ___________ resource.
Final answer:
Aluminum is a renewable resource due to its ability to be infinitely recycled, which saves energy and cuts emissions. Its recycling is economically and environmentally beneficial, helping to preserve natural resources and supporting sustainable management practices.
Explanation:
Aluminum cans may be collected and processed into new aluminum products over and over again. This illustrates that aluminum is a renewable resource. Aluminum is infinitely recyclable, and recycling it requires significantly less energy compared to producing primary aluminum, which also helps minimize emissions, including greenhouse gases. Therefore, not only is aluminum abundant and useful in energy conservation and efficient electricity transmission, but it also contributes to substantial cost savings and environmental benefits over the long term due to reduced capital costs associated with landfills, mines, and international shipping of raw materials.
While recycling has various impacts, metal recycling, and specifically aluminum recycling, is highly effective in terms of energy and resource conservation. Moreover, by focusing on the recycling of materials, we maintain the continuity of material availability similar to natural ecosystems, which rely on constant reservoirs of materials. Practicing recycling aligns with the objectives of industrial ecology and is a critical aspect of managing valuable resources like aluminum sustainably.
What keeps Earth’s core from melting? Temperatures not high enough to reach the melting point Radioactive elements breaking up constantly Extreme high pressure from the weight of the layers of rock above it Magnetic force from rotation of the core
The answer is " extreme high pressure from the weight of the layers of rock above it" I just did this one, and this one is correct!! In short, your answer is C! Hope I helped ya!
Answer:
extreme high pressure from the weight of the layers of rock above it"
Explanation:
Which event happened first in Earth’s evolution on the geologic time scale?
Energy from collisions melted materials that became Earth’s core.
The Sun released a strong burst that destroyed the first atmosphere.
A ball of dust, ice, and rock was pulled together by gravity.
Dense materials hardened to form the crust and mantle.
Answer:
c is the answer and it is right because i had the answer and it is right
Explanation
The earliest event in Earth's evolution was the accretion of a ball of dust, ice, and rock by gravity, before any differentiation of the core, mantle, or crust occurred, and before the loss of the first atmosphere. The correct option is: A ball of dust, ice, and rock was pulled together by gravity.
The earliest event in Earth's evolution on the geologic time scale was when a ball of dust, ice, and rock was pulled together by gravity. This process is known as accretion, which led to the formation of the early Earth, initially presenting a homogenous composition. As the planet grew, it was subject to intense heating due to radioactive decay, collisions with other space bodies, and gravitational compression, which caused the entire planet to melt.
This melting allowed for the differentiation of Earth's layers, as heavier materials like iron sank to form the core, and lighter materials rose towards the surface to form the crust and mantle. These events occurred before the first atmosphere was destroyed by a solar burst and before dense materials hardened to form Earth's distinct geological layers.
if a cell cannot move enough material through its membrane to survive, then the ratio of its surface area to volume is A. too large B. just the right size C. too small D. growing too quickly
The ratio of a cell's surface area to volume is pivotal for its survival. As a cell grows, this ratio decreases, limiting the cell's ability to transport nutrients and eliminate waste, implying that the cell's surface area to volume is too small. Hence, cells must remain small or develop adaptations for more efficient material exchange.
Explanation:If a cell cannot move enough material through its membrane to survive, then the ratio of its surface area to volume is too small. A cell's surface area-to-volume ratio is crucial for its survival. As a cell increases in size, this ratio decreases, meaning the plasma membrane may not have enough surface area to support the diffusion required for the cell's increased volume. This can, therefore, limit the ability of the cell to effectively procure nutrients and eliminate waste through diffusion.
For instance, consider a cell shaped like a sphere, where its surface area increases as the square of its radius, but its volume increases much more rapidly, as the cube of its radius. As the cell grows, it becomes less efficient due to this decreased surface area-to-volume ratio. In order to become more efficient, the cell may either divide, hence producing cells with a better surface area-to-volume ratio, or develop organelles to perform specific tasks.
Ultimately, a cell's size is limited by the rate of diffusion across its membrane, and the efficiency with which it can transport nutrients and wastes. Thus, cells must either remain small or adopt adaptations to increase the efficiency of materials exchange.
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Language, logic operations, and reading are all tasks primarily associated with the __________. A. cerebral cortex B. right hemisphere C. corpus callosum D. left hemisphere
The primary sections in the brain that allow us to read, write, and speak communicably are: the left frontal cortex or Borca's Area, the posterior part of the temporal lobe or Wernicke's Area and a bundle of nerves called the arcuate fasciculus (3).
Answer: Option D left hemisphere
Explanation:
The left side of the brain is responsible for several functions such as :
Analytic thoughtLogicLanguageScience and math calculations and reasoningNumerical skillsWritten skillsControlling the right side of the bodyReading and interpretingThus, Language, logic operations and reading tasks are performed by the left hemisphere.
DNA provides the blueprint for the synthesis of proteins. A _______ is a segment of DNA that codes for one particular protein.
A gene is a segment of DNA
Please Answer The Question Below
1.) is circulatory system. An easy way to remember this is, blood circulates throughout the body, CIRCULatory.
2.) Circulatory; resspiratory.
HOpe i could help and this got to you in time! :)
I believe the first question is #4 circulatory system, number 2 is also #4 circulatory; respiratory.
Hope this helped! have yourself a great day!
The chemical structure of a compound affects properties such as strength of a attraction to other molecule True Or False
The right answer is True.
Intermolecular forces are forces of essentially electrostatic nature inducing an attraction or repulsion between chemical particles (atoms, molecules or ions). These forces are generally much weaker than the intramolecular forces that ensure the association of atoms in the molecules.
In these intermolecular forces, we distinguish:
* Van der Waals forces, electrostatic in nature,
* Hydrogen bonds of higher intensity (see comparative table below) and of a partially covalent nature;
* The halogen bonds.
Thus the intermolecular bonds depend on the availability of hydrogenes and oxygenes and free doublets present in the atoms of the molecule, and thus it depends on the structure.
Answer:
T
Explanation:
Which of the following statements describes a proton of an atom?
A has a negative charge and is located in the nucleus.
B has no charge and is located in the nucleus
C has a positive charge and is located in outer energy levels.
D has a positive charge and is located in the nucleus
Answer: D : Has a positive charge and is located in the nucleus.
Explanation: Proton has a positive charge and is located in the nucleus of atom. Rutherford discovered protons. Protons and neutrons are present in nucleus of every atom.
If a cat has 38 chromosomes in each of its body cells, how many chromosomes will be in each daughter cell after mitosis? A. 19 b. 76 c. 11 d. 38
Answer:
The answer is d)38 chromosomes in each daughter cell.
Explanation:
The answer is very simple. Remember that "Mitosis" is the process where a cell divides once and forms 2 identical cells that are exactly the same as the original. In the process the sequence of each chromosome is duplicated and then contained in a separated nucleus each. At the end each nucleus separates with the exact same information and concludes mitosis.
how can scientific theory be used to answer a specific question about an observation phenomenon?
A scientific theory is an explanation of an aspect of the natural world which can be repeatedly tested and verified using accepted protocols of observation, measurement, and evaluation of results.
Scientific theory can be used to answer a specific question about an observation phenomenon as a scientific law can offer an explanation for an observed phenomenon that is considered true universally. Scientific phenomenon is supported by extensive amounts of research and data collection and any data collected during an experiment is an observation.
Answer:
A law can offer an explanation for an observed phenomenon that is considered to be universally true.
Explanation:
for biologists, what does the term evolution imply when describing the work out Charles Darwin?
Answer:
the anwser is (THAT LIFE CHANGES OVER TIME)
Explanation:
I came on here looking for the anwser but I don't see A B C or D and what they said above me is not helping anybody at all '_'
Select all of the following that are true about rain that falls on deserts:
It soaks deep into parched ground.
It runs off the ground.
It is evaporated quickly because of dry air.
Most deserts receive over 30 inches of rain.
If anyone is reading this in the future the correct answers are:
2. It runs off the ground
and
3. It is evaporated quickly because of dry air
Just trying to help as this data becomes more scarce
Final answer:
Deserts typically receive less than 10 inches of rain annually, much of which is rapidly evaporated due to the dry air and heat, while some contributes to runoff or is used by plants.
Explanation:
In deserts, the limited rainfall experiences multiple fates. Unfortunately, the statement that most deserts receive over 30 inches of rain is incorrect. In reality, the annual rainfall in deserts typically is less than 10 inches (25 cm), often much lower. When it does rain, some water is used by plants, some of it may soak deep into the ground, though typically not very deep due to the parched conditions, and a portion can contribute to runoff. However, given the dry air and heat characteristic of desert climates, much of the rain is rapidly evaporated before it can significantly penetrate the soil.
Which part of the water cycle is most affected by a sunny day with few clouds? decrease in evaporation increase in evaporation movement of water to new locations reduction of groundwater sup
B. Increase in evaportation
Final answer:
A sunny day with few clouds primarily leads to an increase in evaporation in the water cycle, as the sun's warmth accelerates the transformation of liquid water into water vapor.
Explanation:
On a sunny day with few clouds, the part of the water cycle most affected would be an increase in evaporation. The sun's energy effectively warms the oceans and other surface waters, which leads to a higher rate of evaporation. The water vapor is then lifted into the atmosphere and can contribute to cloud formation, which might eventually lead to precipitation. Additionally, a sunny day might also lead to increased sublimation where frozen water turns directly into water vapor.
I am just wondering this out of curiosity, and I'd greatly appreciate if someone answered it! No rush, though, because it's not on any worksheet that I need to turn in, it just popped into my thoughts when I was answering another person's question. Since a plant goes through both the photosynthesis and cellular respiration process, do they go through these processes at the same time? Or do they have some way of rotating through? Thanks to whoever knows the answer!
Plants carry out both photosynthesis and cellular respiration simultaneously, with the former occurring in chloroplasts and the latter in mitochondria. These processes are interconnected, enabling plants to recycle oxygen while contributing to the carbon cycle, and they operate during both day and night.
Explanation:Yes, plants perform both photosynthesis and cellular respiration at the same time. While photosynthesis takes place in the chloroplasts, cellular respiration occurs in the mitochondria. Photosynthesis is responsible for creating glucose and oxygen, which are then utilized as starting products for cellular respiration. In turn, cellular respiration produces carbon dioxide and water, along with ATP, which are then used as starting materials, along with sunlight, for photosynthesis.
It is a common misconception that plants only photosynthesize during the day and only respire at night. In reality, photosynthesis and respiration are interrelated processes that occur constantly as part of the plant's metabolism, allowing the plant to make use of metabolic processes during both day and night. Photosynthesis and cellular respiration work together to recycle oxygen in Earth's atmosphere and are fundamental components of the carbon cycle.
In essence, the relationship between photosynthesis and cellular respiration can be depicted as a cycle, where each process utilizes the by-products of the other. This is evident in how photosynthesis absorbs energy from the sun to create glucose, some of which is then used in cellular respiration in the mitochondria to produce ATP, with some energy released as heat.
How do obligate aerobes and obligate anaerobes differ in their interactions with the atmosphere?
The obligate aerobes need oxygen for their survival, while the obligate anaerobes do not. The obligate aerobes are the species that attain the energy for the process of aerobic respiration with the help of oxygen as the ultimate electron acceptor for the electron transport chain.
On the other hand, obligate anaerobes are the species, which get poisoned by the usual levels of atmospheric oxygen, and thus, get killed in the existence of oxygen.
Answer:
Obligate aerobes require oxygen from the atmosphere for survival, while obligate anaerobes do not.
Explanation:
What is the most effective long-term solution to reduce the amount of carbon dioxide emissions?
To help reduce amount of CO2 emissions you could start by:
Walking or cycling to near distances instead of driving. It could be a win-win, you saving money on gas and helping the planet. By walking it'll help us stay active especially for lazy people "me." Recyling and reusing house hold items is another stradegy. Throwing any cans, news papers, plastic bottles, or cardboard objects into a recyling bin will help by reducing the amount of garbage getting tossed in waste lands.
Final answer:
The most effective long-term solution to reduce carbon dioxide emissions includes using less energy, switching to renewable energy sources, reforesting and preserving forests, and investing in carbon capture technologies, with a goal to reach net zero emissions by 2050.
Explanation:
The most effective long-term solution for reducing the amount of carbon dioxide emissions involves multiple strategies. Primarily, changing energy consumption habits is crucial; this includes using less energy overall and opting for more fuel-efficient cars. Additionally, transitioning to low-carbon energy sources, such as solar and wind energy, will significantly reduce emissions. Enhancing natural CO2 sinks, like forests, and investing in reforestation and preservation efforts are also essential. Furthermore, innovative technologies for carbon capture and sequestration, including direct air capture and capturing emissions from smokestacks, are vital to moving toward net-zero emissions. The urgency of these efforts is underscored by scientific recommendations to reach net zero by 2050 or sooner to prevent the worst impacts of climate change.
The cell part that contains instructions for how the cell should work. Also contains instructions for making proteins
That would be the nucleus where the DNA is stored. The DNA has all of the information for how the cell works including all the instructions for making all of the proteins of a cell.
How are hydrogen bonds different from covalent bonds?
A) The atoms in hydrogen bonds have valence electrons
B) The compounds that result from hydrogen bonds contains carbon
C)Covalent bonds are organic
D) Hydrogen bonds are weaker than covalent bonds and form between partially charged atoms or molecules
Answer is D) Hydrogen bonds are weaker than covalent bonds and form between partially charged atoms or molecules
Rearrange the letters DREAD poisonous snake
The letters in 'DREAD poisonous snake' can be rearranged to form 'Adder', the name of a poisonous snake. 'Adder' is located within the phrase and thus, we can concur that this is what the re-arrangement from the phrase represents.
Explanation:We can rearrange the letters in the phrase 'DREAD poisonous snake' to form the name of a specific poisonous snake. In this case, the name of the snake we can form is an 'Adder'. An Adder is a type of poisonous snake typically found in Europe and Asia. To rearrange the letters, start by identifying all the letters in 'Adder' from the given phrase. Once you do that, arrange them to form the word 'Adder'. Thus, the phrase 'DREAD poisonous snake' can be rearranged to represent a species of poisonous snake known as a 'Adder'.
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The scrambled letters 'DREAD poisonous snake' form the word 'ADDERS', a venomous snake species. The question indirectly discusses mimicry in snakes, where non-venomous ones evolve to resemble venomous types for survival, evident in mimicry of garter snakes and other species. Laboratory tests with predators can further verify this strategy.
Explanation:The words 'DREAD poisonous snake' can be rearranged to form the word 'ADDERS', which is a type of venomous snake found notably in Europe and Asia. From the context and information provided, I understand this is not just a simple task of reordering the letters, but indirectly inquiring about mimicry in snake species, where nonvenomous snakes evolve to resemble venomous ones for protection. For instance, in certain geographical regions, a non-venomous snake may have similar coloration as a local venomous snake, like the strategy seen among Thamnophis garter snakes in North America.
In a fulsome research approach, we may run laboratory tests presenting predators with both brightly colored venomous snakes and dull non-venomous ones, observing if predators show a fear response, thus proving the efficacy of this mimicry strategy. Similarly, in places like Texas, two venomous snakes with analogous markings have been proven to deter same predators.
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what are the cellular organelles
Eukaryotic and prokaryotic cells contain many membrane-bounded structures in them that are assigned to perform specialized functions for the normal activity of the cells. These structures are called organelles.
ExplanationThe eukaryotic cell contains many organelles like endoplasmic reticulum (smooth and rough endoplasmic reticulum), ribosomes, Golgi apparatus and the most important, the nucleus.
Each of these has their particular role and the roles of all these collectively lead to the survival and normal functioning of the cell.
the impact of the automobile on life in the U.S isnt all positive: streetes arent safe for pedestrians,deers and other animals are killed in termendous amounts on roads,and polution from car emissions harns everyone ( fix the paragraph quickest answer gets brainist !!)
The automobile has significantly changed the U.S. in positive ways but also brought many negative consequences, such as air pollution, greenhouse gas emissions, and declining safety for pedestrians and wildlife. Efforts to transition to sustainable transportation include improving vehicle technology, managing travel demand, and encouraging public and non-motorized transit to reduce environmental and health impacts.
The advent of the automobile greatly transformed the United States, bringing about substantial convenience and changes in patterns of living and trade. However, this transformation did not come without its drawbacks. Urbanization has led to traffic congestion, which not only results in reduced productivity and financial loss but also contributes significantly to air pollution and greenhouse gas emissions.
To combat these negative consequences, sustainable transportation solutions are being sought. Such solutions include advancements in vehicle technology, use of low-carbon fuels, travel demand management, and the implementation of intelligent transportation systems. These aim to reduce the impact of our transportation systems on the environment and enhance urban living.
Despite the apparent benefits, continued reliance on automobiles contributes to a car-centric lifestyle, which causes a wide range of environmental and health issues. Among these are safety concerns for pedestrians and wildlife and the loss of green spaces due to urban sprawl. The call for change includes altering our lifestyles to embrace public transport, car-pooling, and non-motorized travel such as biking and walking to foster a cityscape that supports healthy living and mitigates traffic and pollution issues.
Therefore, urbanization and reliance on automobiles have led to traffic congestion, air pollution, and health risks. Sustainable transportation solutions are crucial for a healthier, greener future.
13C and 14C are isotopes of 12C, which has 6 electrons, 6 protons, and 6 neutrons. What is the arrangement of subatomic particles in 14C? A. 6 electrons, 7 protons, and 6 neutrons B. 6 electrons, 7 protons, and 8 neutrons C. 6 electrons, 6 protons, and 8 neutrons
Final answer:
The isotope 14C contains 6 electrons, 6 protons, and 8 neutrons, which gives it a mass number of 14.
Explanation:
The arrangement of subatomic particles in 14C is 6 electrons, 6 protons, and 8 neutrons. This configuration is because the number of protons (which is equal to the number of electrons in a neutral atom) determines the element, and that number is 6 for carbon. The mass number of an isotope is the sum of its protons and neutrons. Since 14C has a mass number of 14, and we know there are 6 protons, there must be 8 neutrons (14 - 6 = 8). Thus, the correct answer is C: 6 electrons, 6 protons, and 8 neutrons.
Which is the MOST accurate description about how green plants and animals get food?
One question is this supposed to be multiple choice?
This probably wont be the MOST accurate but this is the knowledge of a 6th grader (i tried)
Plants get their food from photosynthesising, they get their energy ffrom the sun and the chlorophyll is what capturers the suns energy. And once the suns energy has been caught then the electrons move around almost like they are excited to get the energy from the sun (the way some people get excited after consuming sugar a.k.a getting hyper) And the electrons are "jumping" in the thylakoid membrane. now there is enough energy to drive to the 2nd phase.
ADP becomes ATP that is when it is gaining more phosphate. Then the NADP gets more hydrogen to be able to store the energy now it has the hydrogen so it becomes.....NADPH. That is also kind of phase 3 the Calvin Cycle where G3P goes on to make glucose.
An animal gets energy from consuming the plants or other animals and sometimes even eating their own kind. Animals like deer, rabbits, moneys, pandas they all eat plants and or fruits. Because they get their energy from the plants and as said before that the plants get it from the sun. So basically all kinds of animals depend on the plants but some ocean creature dont really depend on plants but in some ways they do. Because not only for food, but for oxygen.
As you may have noticed i kinda know more about plants but soon i will be learning about animals since we are still learning about eukaryotic organisnisms.
Hope this helps. And have a great day! :)
At some point all chordates get a flexible rod in there back called
notochord i think
im sorry if its wrong
What is radiation? Transfer of heat through objects touching the source transfer of heat through direct physical contact transfer of heat through electromagnetic waves transfer of heat through the movement of particles
Answer: C i got it right for sure!!! 100%
Explanation: As you can see, i tell right i can give proof here,Question 5 (Worth 4 points)
(02.05 LC)
What is radiation?
Transfer of heat through objects touching the source
Transfer of heat through direct physical contact
Transfer of heat through electromagnetic waves
Transfer of heat through the movement of particles
Points earned on this question: 4
answer is c :Transfer of heat through electromagnetic waves
you are welome press likes and 5 stars thanks :)