A carbohydrate is an organic compound such as sugar or starch, and is used to store energy. Like most organic compounds, carbohydrates are built of small, repeating units that form bonds with each other to make a larger molecule. In the case of carbohydrates, the small repeating units are called monosaccharides.
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During one night in 1995, a 1600-foot section of Sleeping Dunes National Lakeshore beach collapsed and landed in Lake Michigan. The missing sand created a steep 100-foot drop straight into Lake Michigan.
What caused the disappearance of the beach and the creation of the 100-ft drop into Lake Michigan?
A.
a landslide
B.
glacier movement
C.
deposition
D.
weathering
Landslides are the displacement of material from higher to lower regions due to the action of different factors. A) a landslide caused the disappearance of the beach and the creation of the 100-ft drop into Lake Michigan.
What is a landslide?A landslide can be defined as a massive movement of materials that include rocks, soil, plants, debris, and other elements composing the ground.
Mass of material moves from high altitude to low altitude due to the action of gravity and the influence of other factors as humidity excess.
These movements occur because the material is exposed to external forces (gravity) that supersede the strength of these materials producing slope breaks.
Other factors such as rains, increase in water level, snowmelt, erosion, earthquakes, human activities, and others influence the landslide occurrence.
The correct option is A) a landslide caused the disappearance of the beach and the creation of the 100-ft drop into Lake Michigan.
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Which of the following is the correct order of the structures through which light passes after entering the eye?
A)
lens, pupil, cornea, retina
B)
pupil, cornea, lens, retina
C)
pupil, lens, cornea, retina
D)
cornea, pupil, lens, retina
The following is the correct order of the structures through which light passes after entering the eye : Cornea, pupil, lens, vitreous humour retina
Light travels like this:
1) Enters the cornea, which bends light. 2) Light passes freely through the pupil of the iris. 3) Light passes through the vitreous. 4) The retina captures light rays and processes them into impulses.
Some of this light enters the eye through an opening called the pupil. The iris (the colored part of the eye) controls the amount of light accepted by the pupil. The light then passes through the lens (the transparent part of the eye). The lens works with the cornea to correctly focus light onto the retina.
The eight structures in the eye that light passes through before hitting the photoreceptors are the cornea, aqueous humor, lens, vitreous humor, ganglion cell layer, inner reticular layer, inner nuclear layer, and outer reticular layer. .
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which of the following is the most accurate comment on the earth's carrying capacity for people?
(a) K is smaller now than it was a thousand years ago.
(b)The human population is still a long way from K.
(c)Our technology has allowed us to keep increasing K.
(d)When it comes to humans, the concept of K is irrelevant.
We can keep raising K thanks to technology. The best assessment of how many people the earth can support is the following.
Whereabouts is the Earth?Earth's location in the universe is determined by the Hercules Supercluster of galaxies. A supercluster is a group of galaxies bound together by gravity. Within this supercluster, a smaller group of galaxies called the Local Group includes us. Earth is situated in the Night Sky, the second-largest galactic in the Bike Club.
What does the actual name of Earth mean?Contrary to common opinion, Earth lacks a globally recognized name. A common misinterpretation of the planet's scientifically known is "Terra." "Earth" is the planet's common surname as it is referred to in science.
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1. A square mile of tropical rainforest contains 36 mammal species. A square mile of tundra contains 4 mammal species.
What characteristic of ecosystems is being described above?
producers
abiotic factors
succession
biodiversity
2. Which of the following is most likely to decrease biodiversity?
Protecting more land from future housing developments
Reintroducing natural predators to an area
Clearing a forest to raise livestock for a nearby town
Adding native plants to a suburban garden
3. In the Kelp forest ecosystem, sea urchins eat kelp, and sea otters eat sea urchins.
What is the role of sea urchins in this ecosystem?
primary consumers
secondary consumers
primary producers
producers
4. What is the correct order of energy flow in an ecosystem?
sun → grass → rabbit
sun → rabbit → grass
fox → rabbit → grass
sun → fox → rabbit
Answer:
Explanation:
A square mile of tropical rainforest contains 36 mammal species. A square mile of tundra contains 4 mammal species.
What characteristic of ecosystems is being described above?
producers
abiotic factors
succession
biodiversity
2. Which of the following is most likely to decrease biodiversity?
Protecting more land from future housing developments
Reintroducing natural predators to an area
Clearing a forest to raise livestock for a nearby town
Adding native plants to a suburban garden
3. In the Kelp forest ecosystem, sea urchins eat kelp, and sea otters eat sea urchins.
What is the role of sea urchins in this ecosystem?
primary consumers
secondary consumers
primary producers
producers
4. What is the correct order of energy flow in an ecosystem?
sun → grass → rabbit
sun → rabbit → grass
fox → rabbit → grass
sun → fox → rabbit
Why do cells need to die?
Answer:
Why do cells die? ... When cells are not needed, such as during certain stages of development. To create a structure in the body, for example, the outer layer of the skin is made of dead cells. To remove excess cells, such as white blood cells after an infection has been cleared.
Cells need to die bcuz a cell has only a limited amount of energy to do its function so it will not work aftr it has no energy. thus cells need to die.
The picture below shows four locations on the map of Australia.
Which of these locations is most likely to experience moderate climate throughout the year? FLVS
Location A
Location B
Location C
Location D
I choose answer b on this map
what is a microscope
Answer:
an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.A microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope.
The Law of Conservation of Energy states that energy is never created or destroyed but only changed from one form to another. Based on the equation of photosynthesis, where do you hypothesize the energy from the Sun is now stored?
Because sunlight energy is required for the conversion of carbon dioxide and water into glucose and oxygen during photosynthesis, the rule of conservation of energy is related to this process.
What is the Law of Conservation of Energy?The term "conservation" refers to a physical quantity or parameter's entire value (such as energy, mass, linear or angular momentum).
Therefore, every new glucose molecule contains a small amount of the energy the sun provides. In the presence of sunshine, a series of chemical reactions called photosynthesis transforms carbon dioxide and water into glucose and oxygen.
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How many chromatids are there after meiosis 2?
Answer:
Try 2 sister chromatids.
Explanation:
What are some of the selection criteria used by agriculturalists for selecting plants and livestock
The selection of plants and livestock by agriculturalists is a critical component of successful farming.
It is important to choose the right plants and animals in order to maximize yields, reduce risk, and ensure sustainability. There are several criteria that agriculturalists use to make their selections.
The first selection criteria is climatic adaptability. This means ensuring that the plants and animals being chosen are suitable for the climate, soil, and other environmental conditions of the farm. It is important to choose varieties that are disease resistant, drought tolerant, and adapted to local conditions. Additionally, plants should be chosen based on their yield potential, harvest season, and marketability.
The second selection criteria is genetic variability. This means selecting plants and animals with a wide range of genetic diversity. This diversity is important for ensuring that the crops and livestock are able to adapt to changing environmental conditions. Additionally, genetic diversity helps to reduce the risk of disease and pest outbreaks.
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You’ve learned about the laws of thermodynamics. using examples, explain why the first and second laws are significant for living organisms.
The first law of thermodynamics in living things. The sun provides the energy for photosynthesis. Plant leaves have cells that take in light energy and transform it into chemical energy.
The second law states that when everything goes from order to disorder, entropy increases. Living organisms die when there is a systemic imbalance.
Glucose, which is needed to create the complex carbohydrates required to increase plant bulk, serves as a reservoir for the chemical energy.
The second law of thermodynamics has two statements: Clausius's claim A system that operates in a cycle and transfers heat from a low-temperature reservoir (or object) to a high-temperature reservoir (or object) without causing any outside influences or interacting with the environment is not conceivable to build.
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electron microscope magnify up to __________
Answer:
between 1 and 50 million times
Explanation:
A light microscope can magnify things up to 2000x, but an electron microscope can magnify between 1 and 50 million times depending on which type you use! To see the results, look at the image below.
What increases genetic variance?
The factors like genetic mutations, random mating, gene flow and genetic drift can increase genetic variance.
Genetic variations are the changes which occur in the genetic sequence of the DNA. These genetic variations are necessary as they allow the living beings to evolve and eventually survive. There are some factors which cause an increase in the genetic variation and they are genetic mutations, random mating, gene flow and genetic drift.
A genetic mutation is an alteration in the DNA sequence of a particular gene which causes a different product to form. This helps increase the genetic variance in organisms. Gene flow is defined as the movement of genes in and out of a particular population. In-flow of genes can help increase the genetic variation of individuals in that population. Genetic drift is the change in allelic frequency in a population by chance. Random mating is the mating of individuals that is not especially dictated by any social or genetic preference and leads to an increase in variation.
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How are proteases activated in the stomach and small intestine?
The proteases are activated by the pH that changes in the stomach and small intestine.
Proteases are the proteins that have the ability to cleave the peptide bonds present in the proteins. The proteases are very important part of the digestive system as they are major forces that make protein digestible and amenable to assimilation. The protease are secreted with the digestive enzymes the are produced in the stomach and small intestine predominantly. The proteases are produced in the inactive form so that they cannot digest the cell that are producing them. In order to become active they need special condition such as pH for their activation.
So, pH is the major activating condition for the proteases, in addition to it there are special protein that act on inactivated protease to make them active.
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Which of the following describes a parasite? (I know it’s between B or D but I’m not sure which one, also, please don’t put links!!)
A) A fish that is killed and eaten.
B) A worm that lives inside a bear.
C) A bear that kills and eats fish.
D) A bear that has worms in its gut.
Answer:
B) A worm that lives inside a bear.
Explanation:
A parasite is a living organism that lives inside or outside of another organism called a HOST in order to obtain nourishment from such organism. A parasite that lives inside its host is called ENDOPARASITE while a parasite that lives outside its host is called ECTOPARASITE.
In this question, a worm that lives inside a bear is a PARASITE because it is living inside the bear, which is the host in order to obtain nourishments. Note that, the answer is not option D because the bear is a HOST not a parasite.
What happens to protease after protein digestion?
Answer:
They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids
Explanation:
where in the cell, are the ribosomes?
Answer:
Explanation:
Ribosomes are found 'free' in the cell cytoplasm and also attached to rough endoplasmic reticulum. Ribosomes receive information from the cell nucleus and construction materials from the cytoplasm.
Answer:
the part that I circled in blue is where ribosomes are in a cell
In the space provided below (1) illustrate, (2) label, and (3) describe
each of the stages of the water cycle (listed above). Use arrows to indicate the
direction of water movement. Page 13 of your Earth Science text book details
the events of the water cycle. You may choose to select and use an image of the
water cycle that you copy from an online resource, however, to receive full credit
you must label and define each process and add directional arrows if they are not
provided
Answer:
Explanation:
TRY TO USE THIS
Plantlike photosynthesis that releases oxygen (O2) occurs in _____. Cyanobacteria actinomycetes chemoautotrophic bacteria chlamydias archaea
Plantlike photosynthesis that releases oxygen (O2) occurs in Cyanobacteria.
Cyanobacteria is a type of a gram-negative bacteria that lives in any body of water which also synthesize its energy by the means of photosynthesis; using the power of sunlight to synthesize its food from carbon dioxide and water, and converting the light energy into a chemical energy with a byproduct of oxygen. The large existence of cyanobacteria may contaminate the water, polluting the water with the toxins it produces called cyanotoxins, and are harmful to people and animals.
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When you took the salad out of the refrigerator for dinner, the lettuce looks wilted and some water was in the bottom of the bowl. Use the principles of osmosis to explain what happened. why
Water molecules must have moved out of the lettuce by osmosis. The addition of salt and other seasonings must have created a hypertonic ambiance for the cells of the lettuce.
Osmosis refers to the movement of solvent (mostly water) molecules through a selectively (semi) permeable membrane from a region of lower solute concentration to a region of higher solute concentration, in such a way as to equate the solute concentrations on both sides. Water usually moves osmotically from regions of lower solute concentration (high water potential) to regions of high solute concentration (low water potential).
Thus, water will move out of the cells of the lettuce to the surrounding (bottom of the bowl) due to the lower water potential of the surrounding.
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The efficiency of glycolysis is approximately
A) 0.2%
B) 2%
C) 20%
D)200%
Answer:
The correct answer is B.
Explanation:
I need help with this science question. Thank you!
Answer:
a. 25 N ---> Direction: Right
b. 40 N ---> Direction: Right
c. 10 N ---> Direction: Right
d. 90 N <--- Direction: Left
e. 40 N down Direction: Down
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Cell structure and function
History of cell biology
I’ll give brainlist to the right answers
which of the following can be considered a natural and non renewable resource for humans to use?
a. oil and other fossil fuels
b. lumber from tress and woody-plants
c. soil
d. sunlight
Answer:
A. is the answer
Explanation:
Oil, coal and natural gas resources are non renewable energy sources.
Under which of the following conditions will the lac operon be expressed at the highest level? a. Glucose and lactose present b. Glucose present, lactose absent c. Glucose absent, lactose present d. Glucose and lactose absent
Two requirements must be satisfied for the lac operon to express at high levels: There must be no glucose.
What does a high glucose level mean?Because the body doesn't produce enough insulin, hypoglycemia (high blood glucose) occurs because there is too much sugar inside the blood. Vomiting, increased appetite and thirst, a rapid heartbeat, problems with vision, and other symptoms are signs of hyperglycemia, a diabetic symptom. Serious health issues might result from untreated hyperglycemia.
What is a healthy blood sugar level?Sugar levels around 140 ppm (7.8 mold/L) are considered normal. After two hours, a result of greater above 200 mg/dL (11.1 meq) indicates diabetes. You have prediabetes if your blood sugar level is between 140 or 199 mg/dL (7.8 molar ratio and 11.0 mmol/L).
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When fungal buds remain attached in a row following cell division, the resulting chains of yeast cells are called ______
When fungal buds remain attached in a row following cell division, the resulting chains of yeast cells are called Pseudohyphae.
Yeast cells form chains called Pseudohyphae when fungal buds remain attached in a row after cell division. This type of chain formation allows for the growth and expansion of fungi in an environment, helping them to survive and thrive.
Pseudohyphae can be found in a variety of different fungi, including Candida albicans and Cryptococcus neoformans.
Understanding the formation of Pseudohyphae is important in order to monitor and control the growth and spread of fungi.
Pseudohyphae can be an indication of a fungal infection, and are typically associated with Candida yeast species. The formation of Pseudohyphae can be used to help diagnose a fungal infection and provide further information about the type of fungus involved.
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3 Two true breeding parents are crossed similar to Mendel's P generation. A tall plant is crossed with a short plant. What is the expected outcome for the F1 generation
All tall will be the expected outcome for the F1 generation. To create the P generation, Mendel crossed two pure breeding parents. A tall plant and a short plant have been crossed. In the first generation following the cross, one version of a trait.
Such as tall, always concealed the other form, such as short. Mendel referred to the dominant trait as being visible, and the recessive trait as being concealed. The buried version of the trait resurfaced in a small percentage of the plants in the second generation when plants were permitted parents to self-fertilize (pollinate themselves). The ratio was specifically 3:13:13, colon, 1, meaning that there were always roughly 333 plants that displayed the dominant characteristic (for example, tall) for every 111 plants that displayed the recessive trait.
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What were the two main factors that changed people’s view of lobster from being a punishment to becoming a delicacy? PLEASE HELP! will give brainliest!
Which phrase describes estuaries?
are made of fresh water only
are areas where rivers flow into lakes
are homes to unique plants and animals
are places where all of Virginia's water drains
O
are areas where rivers flow into lakes. A coastal body of brackish water that is partially contained, has one or more rivers or streams flowing into it, and has a free connection to the open sea is called an estuary.
Estuaries are areas of water where rivers and the ocean converge. They serve as habitat for a variety of fauna, including well-known fish species. They also help employment, tourism, shipping, and other things. Due to the fact that estuaries often have brackish waters, which are a mixture of fresh water that drains from the land and salty ocean, many different kinds of plant and animal species call them home. Numerous habitats are produced by this unusual admixture of fresh and salt water.
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