Which of the following is not a reason that oceans are important to life on Earth?
source of fossil fuels
part of the water cycle
moderate climate
source of biodiversity
2. Which kind of nutrients cycle through the atmosphere?
Answer:
Nutrient cycle is a process of movement, reuse or recycling of nutrients in that particular environment. They are for both living and nonliving things, elements like carbon, oxygen are recycled through such cycles.
Nutrient cycle in an ecosystem involve:
carbon cyclenitrogen cycleoxygen cyclephosphorus cycle
which Statement correctly describes why cells are so small? a) when cells are small the movement of food and waste can be efficiently handled by the cell membrane b) when cells are small they can adapt their shape more easily to fulfill their specific function c) when cells are small their internal parts can better support the cell membrane d) when cells are small they can easily work together to form tissue
Answer:
a) when cells are small the movement of food and waste can be efficiently handled by the cell membrane
Explanation:
Cells need to get their nutrients and waste in and out of their cell membrane every quickly. Cells are hard workers anyway! The other options also don't make much sense. The cell shape doesn't mean much to their function, and size doesn't impact shape. The cell's internal parts (mitochondria, vacuole, etc) don't support the cell membrane, they have their own functions to focus on. Cells don't work together in tissue but they can interact with each other when needed.
Answer:
The statement (a) correctly describes that why cells are so small.
Explanation:
Cells are formed of cytoplasm enveloped by a phospholipid bilayer. In the cells of plants, a supplementary cell wall also prevails. The cytoplasm accommodates various metabolic activities that need a spontaneous supply of nutrients. During the same time, metabolic wastes originate from these reactions, which are required to be eradicated. All this uptake and discard of nutrients and waste components occurs by mediation across the cell membrane via passive, active, or facilitated transport.
In the absence of any circulatory system, these cells depend entirely on the process of diffusion through the membrane. The brisk interchange of molecules can only take place if diffusion occurs over brief distances. Thus, this rate of uptake of nutrients within the cells and discarding of wastes into the external surroundings hugely relies upon the cell surface, which is restricted by the cell membrane. Thus, surface area of the cell is one of the limiting factors to monitor the rates of diffusion of these molecules. Therefore, when the cells are small, their wastes and food can be handled effectively by the cell membrane.
how many protons are in the nucleus of a carbon atom
Answer:
i'm pretty sure its 6 protons.
Explanation:
Carbon-14 is an isotope of the element carbon. All carbon atoms have 6 protons in their nucleus. Most carbon atoms also have 6 neutrons, giving them an atomic mass of 12.// = 6 protons + 6 neutrons\\. Carbon-14 atoms have two extra neutrons, which is a total of 8 neutrons.
A carbon atom has six protons in its nucleus, which is consistent across all its isotopes, such as carbon-12 and carbon-14. This defines its atomic number as (Option A) 6.
A carbon atom is defined by its atomic number, which is 6. This atomic number corresponds to the number of protons in the nucleus of the carbon atom. Therefore, all carbon atoms have exactly six protons in their nucleus.Carbon has several isotopes, such as carbon-12, carbon-13, and carbon-14. Despite these differences in isotopes, the number of protons remains the same across all carbon isotopes. For instance, carbon-12 (¹²C) has six protons and six neutrons, while carbon-14 (¹⁴C) has six protons but eight neutrons. The stability of these isotopes varies, with carbon-14 being naturally radioactive.Complete question as follows:
how many protons are in the nucleus of a carbon atom
A. 6
B. 12
Write a short paragraph to explain why the sugar could get through the membrane, but the starch could not?
Answer:
Selective permeability. When many glucose molecules combine they form one large molecule called starch. Due to starch being a larch molecules they have difficulty passing through the membrane. Glucose molecules are smaller in size therefore they can pass easily through the membrane.
Explanation:
Selective permeability the the process whereby the cell membrane allows for selective molecules to pass through its membrane, in order to obtain internal equilibrium.
Along a mid-ocean ridge, rocks _____ moving away from the ridge.
A. become older
B. become younger
C. remain the same age
Answer:
A. become older
Explanation:
A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.They technically would be old rocks because once the lava dries out it will spew out new rock, pushing away the older rock.
How have scientific advancements led to an increase in food safety? a. improved preservation techniques b. improved monitoring techniques c. improved processing techniques d. all of the above Please select the best answer from the choices provided
Improved preservation techniques, improved monitoring techniques, and improved processing techniques this scientific advancements led to an increase in food safety, hence option D is correct.
What is food safety?Hazard detection includes new technologies for energy efficiency and waste reduction, an increase in food safety.
The conditions that need to be met in order to keep our food safe, and the detection of hazards, such as that image of the hurricane that allows us to see if and when that storm is coming.
Food safety is the practice of handling, preparing, and storing food in a way that reduces the risk of food-borne disease and injury.
Therefore, food products may come into contact with a variety of health risks as they move through the supply chain from field to factory to fork.
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Answer:
D: all of the above
Explanation:
Scientific advancements have led to an increase in food safety by improving preservation, monitoring, and processing techniques.
Improved preservation techniques, such as refrigeration, freezing, canning, and drying, help to slow or stop the growth of microorganisms that can cause foodborne illness.
Improved monitoring techniques, such as DNA-based testing, have made it easier to identify and track foodborne pathogens, allowing for quicker and more targeted responses to outbreaks.
Improved processing techniques, such as pasteurization and irradiation, have been developed to kill or remove harmful bacteria and other microorganisms from food products.
Overall, these advancements in science and technology have led to a safer food supply, reducing the risk of foodborne illness and increasing public health.
E23 verified.
What the hec I need helping
Answer:
The cell enters the interphase stage after completing the cell cycle. This stage is considered to be “resting” stage because the cell is at full maturity however, this accusation is incorrect. The cell enters the interphase stage instead and prepares to enter into mitosis.
Explanation:
interphase
Pyruvic acid enters the ____ and is first converted into____.
A. Mitochondria; acetyl CoA
B. Karen’s cycle; acetyl CoA
Pyruvic acid enters the Karen's cycle and is first converted into acetyl CoA.
Karen's cycle
The Karen's cycle refers to the citric acid cycle which is a cycle that releases stored energy.
Pyruvic acid is transported into the mitochondria, where it is converted into acetyl CoA via the enzyme pyruvate dehydrogenase. This step precedes the Krebs cycle, where acetyl CoA is further broken down to generate energy.
Explanation:Pyruvic acid enters the mitochondria and is first converted into acetyl CoA. This process occurs in the mitochondrial matrix where the enzyme pyruvate dehydrogenase catalyzes the conversion of pyruvate into acetyl CoA, releasing a molecule of carbon dioxide and forming NADH from NAD+ in a reaction known as oxidative decarboxylation. After its formation, acetyl CoA then enters the Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, where it is metabolized to produce ATP, NADH, and FADH2.
The three-carbon pyruvate molecule generated during glycolysis moves from the cytoplasm into the mitochondrial matrix, where it is converted by the enzyme pyruvate dehydrogenase into a two-carbon acetyl Coenzyme A (acetyl CoA) molecule. This reaction is an oxidative decarboxylation reaction. It converts the three-carbon pyruvate into a two-carbon acetyl CoA molecule, releasing carbon dioxide and transferring two electrons that combine with NAD* to form NADH. Acetyl CoA enters the Krebs cycle by combining with a four-carbon molecule, oxaloacetate, to form the six-carbon molecule citrate, or citric acid, at the same time releasing the coenzyme A molecule.
Which of these is a consequence of over fertilization?
A. runoff
B. mitosis
C. decalcification
Answer:
A. runoff
Explanation:
Runoff is a consequence of over fertilization.
This can be dangerous because it could cause the Mother and the babies to get disabilities or die.
DNA: TAC CGT TTT CTT ATT TAC ATA ACT CTG CGA ATG
mRNA: AUG GCA AAA GAA UAA
Answer:
rest of the mRNA sequence- AUG UAU UGC GAC GCT UAC
Explanation:
T becomes A
A becomes U
C becomes G
G becomes C
Hope this helps. Good luck ^-^
Answer:
Is this a question or?
Explanation:
Data courtesy of World Bank 2004
According to the chart above, sub-Saharan Africa has the highest number of teen mothers. Which of the following
statements best explains why younger motherhood is more common in African countries?
A Women are less likely to experience poverty in developing African countries.
B. Women are more likely to have a high socioeconomic status in developing African countries.
Women are more likely to increase their socioeconomic status if they marry early in developing
African countries
D. Women have fewer educational and economic opportunities in developing African countries
Please select the best answer from the choices provided
О А
B
о с
OD
Mark this and return
Save and Exit
Submit
Answer:
Women have fewer educational and economic opportunities in developing African countries.
Explanation:
How many kilograms are in
44 pounds? 1 kg = 2.2 lbs
44 lbs = [?] kg
Answer:
20 kg
Explanation:
think of it like this:
1kg=2.2 lbs, meaning that if I want to go from lbs to kilograms, I'll have to divide by 2.2 so to go from 44 pounds to kg divide 44 by 2.2.
To convert 44 pounds to kilograms, multiply by the conversion factor of 1 kilogram = 2.2 pounds. The answer is 20 kilograms.
Explanation:To convert pounds to kilograms, you need to multiply the weight in pounds by the conversion factor of 1 kilogram = 2.2 pounds. In this case, to convert 44 pounds to kilograms, you can set up a proportion:
44 pounds = x kilograms
1 kilogram = 2.2 pounds
Cross multiplying, you get:
x = 44 pounds × 1 kilogram / 2.2 pounds
x = 20 kilograms
Therefore, there are 20 kilograms in 44 pounds.
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In North America, what is the largest biome present?
A. Tundra
B. Savanna
C. Steppe
D. Taiga
In North America, Taiga is the largest biome present. The correct option is D.
The largest biome in North America is the taiga, sometimes referred to as the boreal forest.
It stretches into parts of the United States, including the northern regions of Minnesota, Wisconsin, and Michigan, as well as the northern parts of Canada, including Alaska.
Large tracts of coniferous woods, including spruce, fir, and pine trees, are what give the taiga its name. It has short, chilly summers and lengthy, harsh winters with average precipitation.
Numerous types of birds as well as bears, wolves, moose, and other animals can be found in the taiga biome.
Thus, the correct option is D.
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where did earths water come from
Answer:
Two rocky material collision cause water formation
Explanation:
Earth is rich in water, and has been for a few billion years, but scientists are still debating just where all that life-sustaining liquid came from. At least some of it was thought to have been brought here by comets or asteroids, but that idea still falls short in explaining how so much water ended up on Earth’s surface – and deep below, as well. Now, a team of scientists at Arizona State University (ASU), led by Peter Buseck, has come up with a new proposal. The new peer-reviewed paper was published in the Journal of Geophysical Research: Planets on October 9, 2018.
The new research suggests that Earth’s water came from both rocky material, such as asteroids, and from the vast cloud of dust and gas remaining after the sun’s formation, called the solar nebula.
The 2019 lunar calendars are here! Order yours before they’re gone. Makes a great gift.
Earth’s ocean water is similar to that found in asteroids. That’s one reason scientists have long thought that most earthly water came from an asteroid bombardment in the days of the early solar system. The ratio of deuterium – a heavier hydrogen isotope – to normal hydrogen is a unique chemical signature in various water sources. In the case of Earth’s oceans, the deuterium-to-hydrogen ratio is close to what is found in asteroids. But, according to Steven Desch, also at ASU and one of the team members:
Answer:
The inside-out model proposes that the Earth formed with trace amounts of water structurally bonded to the minerals in the mantle. This water makes its way to the Earth’s surface through volcanic processes.
Explanation:
What happens when a sound wave moves from air to water?
It slows down.
It speeds up.
It stays the same.
It reverses.
Answer:
It slows down.
Explanation:
The wave moves slower through the air than it moved through the water.
That created the wave distance to be smaller than it was in water.
hope this helps☆
Answer:
Option (1)
Explanation:
Sound waves are produced due to the vibration of any particular object. These waves propagate freely in air. When these sound waves change its medium from air to water, which is a denser medium, then the velocity of these waves gradually decreases. It is because, in the denser medium, the materials are compressed tightly and the speed of the sound waves in water decreases with the increasing water depth.
Thus, when the sound wave travels from air to water, it gradually slows down.
Hence, the correct answer is option (1).
What are the different methods of food preservation?
Answer:oldest and modern methods of food preservations are:
Explanation: oldest
1.drying 2.refrigeration 3.fermentation
Modern
1.canning 2.pasteurization
3.freezing 4.addition of chemicals
Food preservation methods include canning, freezing, and drying amongst others. These methods are designed to slow down or halt the growth of microorganisms that cause spoilage. They often involve altering the temperature, water content, or chemical composition of food.
Explanation:There are several methods used in the preservation of food, designed to slow the spoilage, browning, or degradation of nutrients in food. These methods often involve altering the environment of the food, leading to a slowed growth of bacteria, fungi, and other microorganisms. One of the most common methods is canning, where food is heated inside sealed containers to kill microorganisms. The freezing of food is another method, where the temperature is lowered enough to slow or stop the growth of microorganisms. Drying is one more method, where the water is removed from food to prevent the growth of microorganisms. Other methods include smoking, pickling, jellying, and using preservatives and additives.
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Match the following. Match the items in the left Colin to the items in the right column.
1.Biomass
Organic material made from plants and animals
2.Hydropower
Use of water to generate electricity
3.Renewable
Able to be recycled or replenished in a short period of time
4.Turbine
Engine with large blades
100% correct ✅
Answer:
All that you have matched is correct. ☑✔✔✔
Explanation:
✌Hope it helps ❣
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In the DNA double helix, how are the two strands of DNA held together?
Answer:
Option D
Explanation:
The DNA strands are composed of nucleotides which consists of sugar, phosphate and nitrogenous bases. The base pairs of one DNA starnd bind to the base pair of other DNA strand. The nitrogenous bases in the two strands of DNA make pairs such as A binds with T and C binds with G.
These base pairs are held together by the hydrogen bonds which are weak molecular forces.
Hence, option D is correct
The climate type and organisms that live in a particular place combine into an ecological classification known as a/an
climate zone
biosphere
ecosystem
biome
Answer:
biome
Explanation:
The climate type and organisms that live in a particular place combine into an ecological classification known as a biome.
what is the type of mutation?
Well,
There are different types of genetic mutations,
Nonsense mutationMissence mutation InsertionDuplicationDeletionFrameshift mutationRepeat expansionHope this helps.
r3t40
You observe a sample under a microscope. It is 200 µm in diameter and has no nucleus. What would it most likely be?
Considering the size of 200µm and the absence of a nucleus, the sample observed under the microscope is most likely a bacterium as bacteria typically match these characteristics.
Explanation:The sample you observed under the microscope is 200 µm in diameter and has no nucleus. Based on these observations, the sample is most likely a bacterium. Bacteria are typically around this size and lack a nucleus. In contrast, human red blood cells, which are also devoid of a nucleus, are about eight micrometers in diameter which is significantly smaller than 200 µm. Furthermore, the size of some other cellular organelles and viruses is also comparatively small. Therefore, considering the size and absence of nucleus, the most probable classification of the sample would be a bacterium. Micrographs obtained through different microscope types can aid us to observe and study such small entities.
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The sample observed under the microscope is most likely a bacterium because of its size and lack of nucleus, which are characteristic features of prokaryotes like bacteria.
Explanation:From the description given in your question, the sample you observed that is 200 µm in diameter and has no nucleus is most likely a bacterium. Bacteria are typically a few micrometers in size and do not possess a nuclei, unlike eukaryotic cells. They fall under the category of prokaryotes, which are unicellular organisms without a true nucleus. Prokaryotes are distinct from eukaryotes, such as animal and plant cells, which do have a nucleus. Bacteria are visible under microscopes and can be seen in micrographs.
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Which of these is associated with El Niño?
O
A. Below-average sea levels
O
B. A periodic warming of sea surface temperatures
O
c. Below-average sea surface temperatures
O
D. Periodic rises in carbon dioxide levels
SUBMIT
Answer
CORRECT ANSWER ► B
B- A periodic warming sea surface temperatures
☺☺☺
El Niño is associated with a periodic warming of sea surface temperatures, which is part of the short-term, worldwide climate event known as the El Niño-Southern Oscillation (ENSO). Hence, the correct option is B.
El Niño is a short-term, worldwide climate change event marked by the warming of the Pacific Ocean. This is an aspect of the El Niño-Southern Oscillation (ENSO) that affects weather patterns around the globe. During El Niño, typical weather patterns are disrupted, leading to significant effects such as increased rainfall in normally dry regions and diminished fish populations due to the warmer, nutrient-poor waters.
Coastal upwelling normally brings cold, nutrient-rich waters to the surface, but this is inhibited during El Niño events, deepening the thermocline and preventing the normally productive waters from supporting large fish populations. Moreover, ENSO events have a cyclical nature, typically occurring every two to seven years and can influence global temperatures and precipitation patterns.
What stays consistent throughout the experiment?
Answer:
The control group stays consistent throughout an experiment.
Explanation:
In an experiment, the basic format is to have two different groups, the independent group and the control group. You apply whatever change to the independent group, but keep the control group the same.
Independent group - the group that receives treatment.
Control group - the group that receives no change and is used as a comparison to the independent group.
For example:
Q: Shaun is doing an experiment. He wants to test whether sugar water makes lima beans grow faster. What would be his control group and his independent group?
A: His control group would be the lima beans that are only given regular water. His independent group would be the lima beans that are only given the sugar water, because that is the element he is trying to test.
Hope this helps!
Compare and contrast types of group behavior and individual behavior
Group behavior is like being open to the others and having a nice time, individual behavior is like silent and thinking.
Comparitive: Group behavior can be loud and full of conversations while individual behavior is like no conversation and silent.
Contrast: Group and Individual behaviors are the opposite of eachother
Hope this helps!
>Starfox5454<
Select the part of the ATP molecule that stores
and releases energy?
A
B
C
D
Answer:
B
Explanation:
B is the part of the ATP molecule that stores and releases energy.
Answer:
The answer is "B".
Hope this helps!!! :)
Sperm are the only human cells to have _____.
cilia
mitochondria
flagella
lysosomes
Answer:
The answer is flagella
Explanation:
Answer:
cilia
Explanation:
1. Which statement describes a species that is at carrying capacity?
A The number of births equals the number of deaths.
B The number of births is greater than the number of deaths.
C The number of births in one species exceeds the number of deaths in
another.
D The number of births is less than the number of deaths.
Answer: A. The number of births equals the number of deaths.
Explanation: The carrying capacity of a specific species within a particular environment, is the maximum population of the species that can be sustained by the environment without harming the environment. The population will fluctuate about this line or point. A greater number of births than deaths will increase the population. A greater number of deaths than births will decrease the population.
earths seasons are caused by its
Answer: Earth's seasons are caused by it's tilt on it's axis :)
Explanation:
You go for a run and breathe heavily for an extended amount of time. How is this affecting your pH levels?
Answer:
You lose your pH levels because your heavy breathing is creating more CO2.
Explanation:
Answer:
It decreases pH
Explanation:
Alveolar hyperventilation leads to a decreased partial pressure of arterial carbon dioxide (PaCO2). The decrease in bicarbonate is accompanied by the deviation of serum pH below 7.35.
It is called Respiratory Acidosis. It´s blood pH imbalances. Muscle fatigue is associated with a rapid increase in the production of metabolic acids. Tolerance to high intensity exercise may be limited by the body's ability to dampen the decrease in intracellular (muscle) and extracellular (blood) pH, that is, the intrinsic buffer system.