Answer:
C, The myosin filaments remain in lace as they pull the actin filaments inward
Explanation:
Muscles contract when the heads on the myosin filaments latch onto the actin filaments, drawing them inward. As a result, the entire sarcomere shortens, resulting in a muscle contraction.
The myosin filaments remain in place as they pull the actin filaments inward. The correct option is C.
Thus, Actin filaments are drawn inward as a result of the myosin heads cycling and attaching to fresh binding sites, which causes the muscle to contract.
Multiple sarcomeres within muscle fibres engage in this process simultaneously, which causes the entire muscle to contract.
In conclusion, during muscle contraction, actin filaments are actively pulled inward by myosin filaments, specifically the myosin heads, by the sliding filament mechanism. Muscle contraction and movement depend on the coordinated action of myosin and actin filaments.
Thus, The myosin filaments remain in place as they pull the actin filaments inward. The correct option is C.
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What are the factors that remain the same throughout all tests of the experiment?
Answer:
Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.
Explanation:
the effect on shrubs growing in one area if they are treated with a compound that blocks electron flow through the electron transport chains of chloroplasts. Provide reasoning to justify your prediction.
Answer:
Blocking electron flow prevents the generation of a proton (H+) gradient required for ATP synthesis, and this ATP is in turn exploited by photosynthetic cells to produce organic molecules. In consequence, the blockage of this process would have critical implications for the survival and growth of the shrubs.
Explanation:
In plant photosynthetic reactions, photons from sunlight excite (energize) electrons from chlorophyll molecules located in the thylakoid sacs of the chloroplast. Subsequently, the high-energy electrons move across the electron transport chain that pumps protons (H+) to generate a gradient across the thylakoid membrane. This proton gradient is then exploited by plant cells to synthesize ATP, which is in turn used to create energy-rich organic molecules (e.g., sugar). In consequence, blockage of the electron flow would be critical for the survival and growth of the shrubs.
What effect does pH have on catalase activity? Explain (don’t forget to CITE SPECIFIC DATA to support any statements you make)
Answer:
it destroys the active cite of the enzymes and hence decrease the catalase activity.
Explanation:
which statement is correct about photosynthesis and cellular respiration?
Answer:
plant respiratory is the act of moving water from plant to the atmosphere
help pls plsssssssssssssssssssssssssssssssssssssssssssssssss I give brailest
Answer:
there is no question
Explanation:
What adaptive advantage would a plant have if it contained several pigments instead of just one or two?
Answer:Multiple Pigments Allow The Plant To Have Both Photosynthesis And Cellular Respiration To Maximize The Amount Of Energy They Capture From The Sun. B. Multiple Pigments Absorb Different Wavelengths Of Light, Allowing The Plant To Capture The Maximum ...
Explanation: Do you need more???
The results of Mendel’s study supported the gene hypothesis of heredity because the flower colors of the offspring -
a) all blended
b) appeared in distinct
c) always were either one color or the other
d) never changed from generation to generation
Answer:
c
Explanation:
always were either one color or the other
What are some major elements of nutrients
PLZ HURRY
Answer:
Primary nutrients, also known as macronutrients, are those usually required in the largest amounts. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and potassium. Secondary nutrients are those usually needed in moderate amounts compared to the primary essential nutrients.
Explanation:
because Primary nutrients, also known as macronutrients, are those usually required in the largest amounts. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and potassium. Secondary nutrients are those usually needed in moderate amounts compared to the primary essential nutrients.
a north American grassland is usually more productive when it contains diverse plant communities. how does the biodiversity of north American grassland affects is sustainability
Answer:
The biodiversity allows some plant communities to survive when the ecosystem experiences slightly different weather patterns
Explanation:
I hope this helps :)
what organelle in a plant is chlorophyll found in
Answer:
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
What is the name of the laboratory equipment that would produce a DNA fingerprint like this one?
Answer:
polymerase chain reaction: A technique in molecular biology for creating multiple copies of DNA from a sample; used in genetic fingerprinting etc.
Explanation:
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Does Claire’s pancreas produce these enzymes at a low, normal or high rate?
Low Normal High
Protease { } { } { }
Lipase { } { } { }
Carbohydrase { } { } { }
Answer:
All low
Explanation:
Answer:
Low, Low, Low
Explanation:
I did the gizmo and it was correct
Please help with this question ASAP
Answer:
D
Explanation:
because molecule A is only shown on the outside and is not exposed to the acidity on the inside of the cells
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22.
(05.01 MC)
Which of the following provides the best example of how comparative embryology supports the theory of evolution? (2 points)
Humans do not lay eggs as birds do, but birds produce yolk sacs instead of embryos, suggesting birds evolved later than humans.
Humans have a tailbone that is visible during embryonic development, which suggests that humans evolved to depend on a useful tailbone.
Humans do not have gills as fish do, but human embryos have gill slits, suggesting humans and fish share a common evolutionary ancestor.
Humans have stem cells that develop in an unpredictable way, which suggests that other organisms also evolved to develop in the same manner.
Answer:
Humans do not have gills as fish do, but human embryos have gill slits, suggesting humans and fish share a common evolutionary ancestor and this statement among the following statements provide the best example of how comparative embryology supports the theory of evolution. The correct option among all the options that are given in the question is option "C".
Explanation:
Pls mark brainlest!
Sorry if it doesnt make sense D:
but hope this helps!
Answer:
"Humans do not have gills as fish do, but human embryos have gill slits, suggesting humans and fish share a common evolutionary ancestor."
Explanation:
If a velocity of a car is 20m/s,how much distance cover in 20 second
Explanation:
Velocity (V) = 20 m/s
time (t) = 20 sec
distance travelled (d) = ?
We have the formula
V = d / t
20 = d / 20
d = 20 * 20
D = 400 m
The distance covered in 20 sec is 400 m
hope it will help :)❤
All of the following are barriers to breastfeeding except:_______.
A. lack of role models.
B. having to carry a lot of equipment when traveling.
C. misinformation.
D. fear of appearing immodest
Is my caption for the image below correct?
Answer:
Yeah it's totally correct
Answer:
correct your right
List two names of cell inclusions?
Answer:
Explanation:
Examples of cell inclusions are glycogen, lipids, and pigments such as melanin, lip_ofuscin, and hemosiderin.
Answer:
glycogen, lipids
Explanation:
The metabolically inactive non-living subtances precent in cytoplasm are called as cell inclusions.
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Which of the following choices could cause brain damage in an infant?
a. lack of affection
b. poor nutrition
c. shaking
d. All of the choices are correct.
Answer:
D, a baby needs affection, shaking can kill them and poor nutrition can hurt them.
You are examining a substance found at a crime scene. Using a chemical test, you are able to determine that glycogen is present
in the substance. What does this mean for your investigation?
Select one:
O a. The substance is from an animal source.
O b. The substance is the poison ricin.
O c. The substance is from a plant source.
O d. The substance is a lipid.
Answer:
a. The substance is from an animal source.
Explanation:
Glycogen is a carbohydrate polymer in which animals store their excess glucose as. When animals digest their ingested food, it gets broken down into GLUCOSE. This glucose, when in excess, gets stored as GLYCOGEN.
According to this question, a substance found at a crime scene is being examined using chemical tests. The test revealed that glycogen is present in the substance. This can mean that the substance is from an ANIMAL source because GLYCOGEN is only present in animals.
Answer:
a. The substance is from an animal source.
Explanation:
I, myself, took the exam, but also glycogen is found in animals cells. It is a branch of glucose that is usually stored in liver and the skeletal muscle.
What factors affect the likelihood a species will migrate from the mainland to an island?
Answer:
The factors that might affect the likelihood a species will migrate from the mainland to an island are the distance to the mainland and the island´s size.
Explanation:
Ecologists MacArthur and Wilson took the term island biogeography theory to refer to the predictions about the number of species that could inhabit an island.
Island biogeography theory establishes that the two factors that affect species richness in natural communities on an island are the distance to the mainland and the island´s size.
At the same time, these factors affect immigration and extinction rates. According to the theory, islands that are closer to the continent have higher possibilities of receiving immigrants than those located farther from the mainland. This is the effect of distance.
The effect of size is reflected in the relation between island size and species diversity. In smaller islands, the probability of extinction is higher than in bigger islands. Bigger islands can have more species than smaller ones.
In the case of two islands of the same size and different distance to the mainland, both of them will have the same extinction rate, but the one closer to the continent will have a higher immigration rate, and so, a higher amount of species. The S value will be higher on the island closer to the continent.
Describe: Using the Gizmo, determine how coal and petroleum (oil) are formed. Describe the steps required to form each fuel from atmospheric CO2.
Coal:
Petroleum:
Answer:
by the following;
Explanation:
Carbon: There are four stages in coal formation: peat, lignite, bituminous and anthracite. The stage depends upon the conditions to which the plant remains are subjected after they were buried – the greater the pressure and heat, the higher the rank of coal.
Petroleum: petroleum is formed when large quantities of dead organisms, mostly zooplankton and algae, are buried underneath sedimentary rock and subjected to both intense heat and pressure.
Communicate What kind of animal do you think Darwin was describing?
The animal Darwin is describing is a tortoise. In the reading, there are quotes that imply that it is a tortoise such as:
“it was quietly pacing along”
“it would draw in its head and legs”
“I frequently got on their backs, and then giving a few raps on the hinder part of their shells...”
The animal Darwin is describing is a tortoise. In the reading, there are quotes that imply that it is a tortoise such as:
“it was quietly pacing along”
“it would draw in its head and legs”
What is evolution?Evolution is defined as a change in the genetic composition of a population over successive generations. Let’s arrange the theories given by the following in chronological order-
Greek and Rome – The evolutionary theory was proposed for the first time some 2000 years back by Anaximander.
Erasmus Darwin brought his “The law of organic life” in between years 1794-1796.
Lamarck Mallus first presented his theory of Inheritance of Acquired Characteristics in 1801.
Darwin published his work “Origin of species” in 1859.
The Greeks developed, with Miletus, a primitive theory, indicating a possible relationship between man and animals. Erasmus Darwin and Malthus (the first was Charles's grandfather), developed theories that grounded the naturalistic idea. Lamarck brings erroneous concepts, but they are fundamental for Darwin, finally, to develop his Origin of the Species.
Therefore, The animal Darwin is describing is a tortoise. In the reading, there are quotes that imply that it is a tortoise such as:
“it was quietly pacing along”
“it would draw in its head and legs”
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help please!! BRAINLIEST AND 10 points!!
Jose fears a bioterrorism attack with the Ebola virus but refuses to get a flu shot, even though he is more at risk of dying from the
flu. Jose has what perception
towards risk?
a. optimism bias
b. degree of controltion
c. catastrophe
d. Instant gratification
optimism bias. jose thinks he's immune to the flu, even though he is afraid of diseases in general.
What is Optimism Bias?
The optimism bias is essentially a mistaken belief that our chances of experiencing negative events are lower and our chances of experiencing positive events are higher than those of our peers.
This phenomenon was initially described by Weinstein in 1980, who found that the majority of college students believed that their chances of developing a drinking problem or getting divorced were lower than their peers.
The optimism bias doesn’t mean that we have an overly sunny outlook on our own lives. It can also lead to poor decision-making, which can sometimes have disastrous results.
Therefore, optimism bias. jose thinks he's immune to the flu, even though he is afraid of diseases in general.
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2. Which of the following graphs represents a relation that is not a function?
A
Answer:
D
Explanation:
I just did this and it was D
The Earth's seasons affect only the way plants grow and change.
Answer:
yes but it can also affect humans like tornadoes destroying homes?
What is the predicted human population in 2050? (Site 1)
Answer:
The world's population is expected to increase by 2 billion persons in the next 30 years, from 7.7 billion currently to 9.7 billion in 2050, according to a new United Nations report launched today.
Explanation:Hope this helps :3
The world's population is expected to increase by 2 billion persons in the next 30 years, from 7.7 billion currently to 9.7 billion in 2050, according to a new United Nations report launched today.
What is the meaning of population in the world?The term world population is often utilised to refer to the whole number of humans currently living.
Thus, the above mention data is predicted.
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State Newton's Law for each Question
1. A secured object in an orbiting spacecraft remains at rest unless acted upon by
A. an electrical force
B. an external force
C. a magnetic force
D. a frictional force
10 POINTSSSSSS
Answer:
B. an external force
Explanation:
Inertia can be defined as the tendency of an object or a body to continue in its state of motion or remain at rest unless acted upon by an external force.
In physics, Sir Isaac Newton's first law of motion is known as law of inertia and it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.
Hence, a secured object in an orbiting spacecraft remains at rest unless acted upon by an external force.
The two methods of food production observed in autotrophs
are _____ and _____.
Answer:
-photosynthesis
-chemosynthesis
Explanation:
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
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