Answer:
surface runoff is the answer
The student is studying the movement of substances across the cell membrane. She understands that some substances combine with special transport proteins to be carried across the cell membrane. The substances can move only from an area of higher concentration to one of lower concentration. This process is known as:
Answer:
Facilitated diffusion
Explanation:
Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.
Facilitated diffusion is a passive transport process because they only depend on electrochemical gradients, so they do not need any energy to occur.
Which list identifies the order of events that formed a volcanic crater?
A) CBDA
B) BACD
C) CADB
D) DBAC
Based on the given image, the order of events that formed a volcanic crater is CADB. Thus the correct option is C.
What is a volcanic crater?A nearly circular hole in the ground produced on by volcanic eruptions is known as a volcanic crater. It is a valley that typically stands just above the eruption where volcanic debris is emitted, and it has the shape of a bowl or funnel.
During volcanoes, craters' dimensions and shapes could alter. A volcanic crater, also known as a caldera, is a sizable depression created when a natural disaster occurs and then collapses.
Underneath the surface of the Earth, the molten rock is known as magma. Less dense than normal lava is being pushed upward to the surface by intense pressure. When magma seeps through layers of preexisting rock, it forms another structure.
Therefore, option C is appropriate.
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Which statement best describes the starch content of two leaves taken from the same plant shown in the
chart below?
leaf A
taken from plant in
the dark for 48 hours
leaf B
taken from plant in
bright light for 48 hours
(1) Neither leaf contains starch.
(2) Both leaves contain the same amount of starch.
(3) Leaf A contains more starch than leaf B.
(4) Leaf B contains more starch than leaf A.
The statement best describes the starch content of two leaves taken from the same plant shown in the chart is given: (4) Leaf B contains more starch than leaf A.
Dark reactionplants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.It takes place in the stroma of the chloroplast.Light reactionsThe energy is then temporarily transferred to two molecules, ATP and NADPHThe light reaction is important to produce ATP and NADPH which is used as fuel for starch production.Thus, The statement best describes the starch content of two leaves taken from the same plant shown in the chart is given: (4) Leaf B contains more starch than leaf A.
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what are Okazaki fragments
Answer:
Okazaki fragments are short sequence of DNA nucleotides.
Which Enzyme has an optimal pH that is Acidic?
A. Pepsin
B. Salivary amylase
C. Arginase
Answer:
a. pepsin
Explanation:
it has a 1 to 2 level which is acidic because anything lower than 7 is acidic
Answer:
A. Pepsin
Explanation:
The enzyme pepsin breaks down proteins in the acidic conditions of the stomach. Pepsin has an optimum of pH 2.5 and a working range of between pH 1-4.
Match each of the following terms with its description. 1. Arteries a) Tiny, thin-walled blood vessels that connect the smaller arteries to venules 3. Veins 4. Venules 5. Arterioles 2. Capillaries b) Thin-walled blood vessels that are less elastic than arteries c) Thick-walled, muscular, flexible tubes that carry oxygenated blood away from the heart to the arterioles d) Small arteries that deliver blood to capillaries e) Small vessels that connect the capillaries to the veins
Answer:
Arterioles - D
Arteries - C
Veins - B
Capillaries - A
Venules - E
Explanation:
This question is describing the blood vessels that make up the circulatory system. The blood vessels with their accurate description are as follows:
- ARTERIES: Arteries are the most elastic and thick-walled blood vessels that functions to carry blood away from the heart using great pressure. Arteries are muscular, flexible tubes that carry oxygenated blood away from the heart to the arterioles.
- VEINS: Veins are blood vessels that carry deoxygenated blood back to the heart. Veins have a thin wall and are less elastic in comparison with arteries.
- CAPILLARIES: Capillaries are smallest blood vessels designated to connect the smaller arteries or arterioles to venules. They are also thin-walled.
- ARTERIOLES: Arterioles are small arteries or branches of an artery that connects the arteries to capillaries. Arterioles deliver blood to capillaries.
- VENULES: Venules are tiny veins or branches of a vein that connects the veins to the capillaries. Venules deliver blood from capillaries to veins.
When the particles are equally spaced apart they have reached:
A. Hypertonicity
B. Dynamic Equilibrium
C. Homeostasis
D. Osmolarity
Answer:
B. Dynamic Equilibrium
Explanation:
The result of diffusion is a gradual mixing of material such that the distribution of molecules is uniform. Since the molecules are still in motion, but an equilibrium has been established, the end result of molecular diffusion is called a "dynamic equilibrium".
Answer:
B. Dynamic Equilibrium
Explanation:
When the particles are equally spaced apart they have reached Dynamic Equilibrium.
Energy from the sun, water, air, wood, and soil are all examples of what kind of energy?
ecological energy
organic energy
renewable energy
solar energy
Answer:
Renewable energy
Explanation:
All of these energy sources are ecologically renewable, and therefore are classified as renewable recources that provide renewable energy.
What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?
A. Fossilized remains of archaebacteria
B. Double membranes of the organelles
C. Similar methods of reproduction
D. Presence of circular DNA
Answer:
A. Fossilized remains of archaebacteria
Explanation:
One example of evidence that does not support the theory is that Mitochondria and chloroplasts are much larger than prokaryotic cells.
Which discovery best supports the hypothesis that evolution of the lactase-persistence trait was driven by dairying, the use of milk as a source of adult nutrition in pastoralist cultures
Answer:
The discovery that; The age of pots ( ancient ) that was used to hold milk in ancient times is as old as the Lactase-persistence mutations
Explanation:
The discovery that best supports the hypothesis is given in the question ( The hypothesis about he evolution of the lactase-persistence trait was driven by dairying ) is that The age of pots ( ancient ) that was used to hold milk in ancient times is as old as the Lactase-persistence mutations
D starch
Blood glucose levels can become high following the digestion of carbohydrates.
Which of the following can be digested to release glucose?
A both fructose and sucrose
B both fructose and galactose
C both galactose and lactose
D both lactose and sucrose
Answer:
The answer is A fructose and sucrose
Explanation:
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PLEASE HELP WILL GIVE BRAINLIEST
After a lake dried up during a severe drought a section of undisturbed rock layers was exposed. The layers are represented below.
Fossils in Undisturbed
Rock Layers
eo
Source: https://www.superlachertools.net
This sequence of rock layers best illustrates the concept that
o A. it is important to preserve the diversity of species and habitats
OB new inheritable characteristics can result from the recombining
of genes
oc the living and nonliving environment both change over time
D. living organisms have the capacity to produce populations of
unlimited size
Answer:C
Explanation:
After a lake dried up during a severe drought a section of undisturbed rock layers was exposed represents that the living and nonliving environment both change over time. So the correct option is C.
What is fossil fuels?Fossil fuels is refers to as which is made from decomposing plants and animals. As the time changes, the living and non-living matter decomposes and deposited in deep layers of soil and converted into fossils after a million ages.
These fuels are present in the earth's crust and comprises carbon and hydrogen, which can be burned for energy. The Coal, oil, and natural gas are examples of fossil fuels.
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The _____ of a species is usually the result of predation, competition, and other types of interaction between species.
Answer: Realized Niche
Explanation:
Realized niche is also referred to as Post Competitive niche and can be defined as a thriving environmental area created by a group of organisms to survive from an exsisting Faundermental niche where interactions (predation, competition, light, water,food) with other organisms were limited and competed for.
For example. In a tree( Faundermental niche) which houses different species of birds, In order to survive, each specie of the birds will create a realized niche so as to survive from predation, competition, light etc which the whole tree provides.
Why is CRISPR important?
CRISPR fixes genetic code typos or mistakes
to help cure diseases
or
give the person desired genes or traits
why is the elastic rebound theory compared to a rubber band
write an open letter addressed to drivers and motorists. Make an appeal to them to follow speed limits and explain to them the comsequences.of not following such.
Why are coral reefs important?
A: Coral reefs house over 25% of marine species.
B: Coral reefs provide an important habitat for many ocean creatures.
C: Coral reefs create important food webs.
D: All of the above
The dashed lines between the two bases represents.
Answer:
Weak hydrogen bonds
Explanation: Hydrogen bonds between the bases hold the two strands together.
Where in the United states in the greatest risk of deserification?
Answer:
New Mexico, Texas and on the Navajo Indian reservation in New Mexico and Arizona
Please help, this determines how much work I do, allele chart.
Which of the following best describes the function of the human nervous system? A. The nervous system transports oxygen and nutrients to the body's tissues. B. The nervous system collects and responds to information about the internal and external environment. C. The nervous system protects the body against infection and helps regulate body temperature. D. The nervous system protects internal organs and assists with movement.
: Is a human leg prosthetic an example of science or technology? Explain your answer.
QUICK!!!! ANSWER PLEASE WITH EXPLANATION TOO!!!
Answer:
This would be an example of technology.
Explanation:
Artificial limbs, or prostheses, are used to replace a missing body part which may have been lost due to trauma, disease or congenital defect. The type of prosthesis a person can use is dependent on the individual, including the cause of amputation or limb loss, and the location of the missing extremity. These come in all shapes and sizes, for whatever you need.
Have a nice day!
Answer:
A technology, since the actual prosthesis is a human creation that solves a problem. Science is nothing physical. It is the combination of laws and theories that explain our universe and helps us make decisions. We don't really invent science, we describe it.
Science is ideas. Technology is human creations.
Science generally underpins all new technology.
In your human leg prosthesis example science is crucial in choosing (or developing) suitable materials for construction of the prosthesis. The material must be relatively stable, not break down into toxic substances and have good durability. Knowledge of human Biology is also important if you want to start replacing human body parts.
Basically chemistry and biology are important in the prosthesis development. There is also probably physics regarding tensile strength requirements.
The actual end result of the human prosthesis is a technology which solves a problem of degraded human parts.
So to reiterate, it is a technology.
Explanation:
what happens to a cell to specialize as a red blood cell
Answer:
Red blood cells transport oxygen around the body. They are specialised to carry oxygen because they: contain large quantities of a protein called haemoglobin , which can bind oxygen. don't have a nucleus, so there is more room for haemoglobin.
Explanation:
The diagram below shows part of an ocean food web.
y
sea otter
sea urchin
parrotfish
seaweed
If the number of sea urchins increased which would be the most likely effect on the food
web?
A. a decrease in the
number of sea otters
B. a decrease in the
amount of seaweed
C. a decrease in the
amount of sunlight
D. a decrease in the
number of parrotfish
Black bears in the north hibernate mostly due to the scarcity of food during the winter months.
Prior to hibernation bears are foraging for food. They eat fruit, nuts, acorns, insects, and certain leaves and plants. They catch occasional small animals, but lack agility to catch most adult prey. In the months before hibernation black bears can gain up to forty pounds of fat per week.
9. What types of food molecules is the bear consuming (give at least two)?
Answer:
Food having high fat.
Explanation:
The bear eat food products having high fats in order to store it in the body. The food which have large amount of protein and fats are stored in the body and helps in gaining of weight up to forty pounds of fats per week. During hibernation period, bear used this fats for the release of energy used for its survival. Fats produce huge amount of energy when they are broken down so this fats helps in hibernation of bear.
A ___(J)_____ is a group of individuals of the same species that mate and produce offspring. In each generation, new genotypes occur that express themselves as specific individual ____(K)___. Any factor that affects the ____(L)___ of a population can change the frequency of ___(M)___, resulting in evolution over time. Through the processes of variation and ___(N)___, new species can arise. A ___(P)___ is a population of physically similar, interbreeding organisms that do not interbred with other such groups.
Answer:
(J) population; (K) phenotypes; (L) gene pool; (M) alleles; (N) natural selection; (P) species
Explanation:
A population is a group of organisms living in a particular geographical area that is capable of interbreeding, while a species is a group of populations that are capable of interbreeding and producing fertile progeny. In a population, genetic variation can enter from one of these sources: 1-recombination (i.e., the exchange of DNA between homologous chromosomes during meiosis), 2-mutations (i.e., genetic alterations resulting from DNA replication), 3-migration of individuals between populations, or 4-lateral or horizontal gene transfer (i.e., the acquisition of genetic material between individuals without direct vertical inheritance, it is extremely rare in higher organisms). Alleles are gene variants which are may be created, for example, through mutation, while the gene pool refers to the total genetic diversity (i.e., alleles) that exists within a population. Finally, natural selection refers to the evolutionary process of differential reproduction and survival through which populations adapt and change.
Which statement explains why the structure of sickle cells differs from normal red blood cells?
a. The gene mutation affected protein synthesis.
b. The gene mutation prohibited DNA replication.
c. The gene mutation inhibited the cell's ability to produce tRNA.
d. The gene mutation affected the cell's ability to produce ATP.
Answer:
A. the gene mutation affected protein synthesis
Explanation:
Basically, sickle cell results due to point mutation (change in one nucleotide) in DNA, which in turns affects the mRNA produced and finally the protein made from that mRNA is affected. I have listed a helpful image below which shows that the mutation actually results in formation of an undesired protein which causes sickle cell to occur.
Much of our world is made up of plants, soil, and water. What do you think is important about these three things? How do they
interrelate?
Answer:
si s plantas no lrspiermo xsdaa
Explanation:
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Jorge is testing the effect of lead on child development. Based on his observations, he finds that the longer the children are exposed to lead-based paint, the higher the chance becomes that the children may develop behavioral problems. He has done repeated experiments, and his results are similar to the results of many other scientists.
Why is this scenario considered a theory rather than a hypothesis?
It is a testable scenario.
It is based on prior knowledge.
It is a well-tested explanation.
It is a factual statement.
Answer:
(C) it is a well tested explanation
Explanation:
Got it correct on the test.
can you please help me?
carrying capacity
Explanation:
carrying capacity