Answer:
During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. Then, at a critical point during interphase (called the S phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division.
Explanation:
Determine whether each statement correctly describes the myocardial action potential and the pacemaker potential. 1. Because the pacemaker potential occurs during systole, it can also be called systolic potential. (Click to select) 2. The pacemaker potential is the relatively slow, spontaneous depolarization in the SA node. (Click to select) 3. Myocardial cells produce their own action potentials after being stimulated by action potentials originating in the SA node. (Click to select) 4. Myocardial action potentials are characterized by a spike and then slow depolarization. (Click to select)
Answer:
1. False
2. True
3. True
4. False
Explanation:
In mammals, the contraction of the heart muscle is caused by pacemaker cells localized within the sinoatrial (SA) node. These cells rhythmically generate slow electrically-induced action potentials due to their slow rate of depolarization. The pacemaker cells generate the action potentials that propagate through the heart and trigger the contraction of myocyte cells (i.e., myocytes simply conduct the action potential waves). The slow depolarization of pacemaker cells occurs during diastole, i.e., during the period of relaxation of the heart muscle.
If a strand has 10% cytosine, what percent will be adenine?
Answer:
40% of adenine is present
Explanation:
Is the adaptation physical or behavioral. Humpback whales migrate north from Antarctica to breed in warmer water.
Answer:
okay so im going with a behavioural adaptation becasue if it was physical wouldnt that mean that they would change their appearance bc of there adaptation?
okie peace
Explanation:
Answer:
This adaptation is behavioral
Explanation:
The worm population will . . .
Answer:
Die in a few years
Explanation:
What? I’m being realistic!
take over the earth in a few days
Glycolysis that starts with glycogen instead of glucose can be considered to have a higher energy yield because:
A. Phosphorolysis reactions cleave bonds with phosphate instead of water.
B. Phosphorylase is a better enzyme than hexokinase
C. Phosphorylase produces a glucose phosphate without spending an ATP to do it
D. All of these
Answer:
A
Explanation:
The answer is a Because Phosphorolysis reactions cleave bonds with phosphate instead of water (: just trust me
Glycolysis that starts with glycogen instead of glucose can be considered to have a higher energy yield because phosphorolysis reactions cleave bonds with phosphate instead of water. The correct option is A.
What is glycolysis?Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons.
The metabolic process that changes glucose into pyruvate is known as glycolysis.
The high-energy molecules adenosine triphosphate and reduced nicotinamide adenine dinucleotide are created using the free energy released during this process. A series of ten enzyme-catalyzed processes make up glycolysis.
In contrast to phosphorolysis reactions, which cleave bonds with phosphate rather than water, glycolysis can be thought of as having a larger energy yield because it begins with glycogen rather than glucose.
Not producing adenosine 5′-triphosphate is not the primary goal of glycolysis; rather, it is to produce pyruvate for the trichloroacetic acid (TCA) cycle.
By boosting the ratio of NADH to NAD+, the glycolytic synthesis of pyruvate lowers the cytosol.
Thus, the correct option is A.
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The probability of the parents having a child with hairy knuckles is...
Worms that had been invaded by bacteria were eaten by birds. Many of
these birds died. The most likely explanation for this is that the:
a. Bacteria interfered with
normal life of the birds
b. Disease that killed the birds
was inherited
c. Gene alterations in the
bacterial cells killed the birds
d. Birds produced antibodies in response to the bacteria
Answer:
Bacteria interfered with
normal life of the birds
Explanation:
A major disturbance that the ecosystem was able to recover completely from.
Hello. Your question is incomplete. However, I managed to find a question exactly like yours on the internet and managed to realize that you forgot to say that your question asks you to give an example of the statement presented above.
Answer:
A major disturbance from which the ecosystem was able to recover completely was the disease that almost wiped out all of Ireland's potato in 1840.
Explanation:
You may have heard of the Irish Potato Famine, which was a time when the Irish population lived very difficult days, after an illness that almost decimated the country's potato plantations.
The potato was the main source of food for the Irish, but in 1840, a fungus called Phytophthora infestans, managed to infect almost all potato plantations in the country, preventing the potato from being harvested and could be consumed. This created major economic and social problems in Ireland, as people suffered from hunger, poverty and the diseases that arose, which caused many Irish people to immigrate to other countries, or to die.
The fungus plagued the ecosystem for years and only started to decrease in intensity in 1850, once the ecosystem started to recover. Currently, although the pest still exists, the Irish ecosystem is completely recovered and the pest is controlled and is unable to make such an impact.
What statement about enzymes and pH is true?
Most enzymes require a very basic environment to function well.
Most enzymes require a very acidic environment to function well.
Enzymes require a specific range of pH values to function.
Enzymes are unaffected by changes in pH levels.
Answer:
Enzymes require a specific range of pH values to function.
Explanation:
in fact some enzymes are denatured by specific pH ranges.
Where do maple trees get their energy and Matter at the beginning of spring
Answer:
From the stored sugar inside the stem and branches.
Explanation:
The maple trees get their energy at the beginning of spring from the sugar that is stored in the stem and branches because there is no leaves present at that time. Leaves produces glucose during photosynthesis process but in the winter season, the maple tree losses all its leaves so when the spring season comes and the leaves begin to sprout, the maple trees need energy so it used the sugar that is stored in its branches and stem for the generation of energy.
Somebody help me with these 4 questions please
Answer:
i only know question 1 is convergent boundaries.
sorry i am not sure about the others
Explanation:
question 1 is convergent since they are sliding towards each other to form the subduction zone
What part of the plant does the flower attached to
Answer:
The part of a flower stalk where the parts of the flower are attached.
Explanation:
Also known as stem
PLEASE HELP ASAP
When environmental conditions change, selection can cause a change in the distribution of phenotypes of that species. Which of the following trends would provide evidence of disruptive selection in response to environmental change?
A shift in a population's frequency curve from an intermediate phenotype to an extreme phenotype
A shift toward equal distribution of all phenotype frequencies, including intermediate and extreme phenotypes
An increase in the frequency of extreme phenotypes and a decrease in the frequency of intermediate phenotypes
An increase in the frequency of intermediate phenotypes and a decrease in the frequency of extreme phenotypes
Answer:
One of the extreme phenotypes has the highest fitness. The bell curve shifts towards the more fit phenotype.
so I think w ould say the second one
Explanation:
Answer:
An increase in the frequency of extreme phenotypes and a decrease in the frequency of intermediate phenotypes
Explanation:
A disruptive selection is one where the extreme phenotype frequencies are increased and the intermediate phenotype frequencies are decreased.
**(Also I just took the test and this was the answer)
Match the vocabulary word to the correct definition.
Column A
1.
This can release and store energy by breaking and re-forming the bonds between its phosphate groups:
This can release and store energy by breaking and re-forming the bonds between its phosphate groups
2.
The fluid portion of the chloroplast outside of the thylakoids is known as this:
The fluid portion of the chloroplast outside of the thylakoids is known as this
3.
The thylakoid contains this protein complex that spans the membrane and allows H+ ions to pass through it:
The thylakoid contains this protein complex that spans the membrane and allows H+ ions to pass through it
4.
this compound has two phosphate groups, adenine, and a 5 carbon sugar called ribose:
this compound has two phosphate groups, adenine, and a 5 carbon sugar called ribose
Column B
a. ATP synthase
b. ADP
c. stroma
d. ATP
Answer:
1
Explanation:
PLEASE HELP ASAP
For the past 20 years, the population of the invasive Asian Carp in the Mississippi River has skyrocketed, while populations of native species have declined. Which of the following conclusions provides the best explanation for this phenomenon?
The carp out-competed the native species for food and space.
The food sources preferred by the carp increased.
The native species migrated to new areas, while the carp remained.
The native species contracted a virus that the carp were immune to.
Answer:
the carp out competed the native species for food and space.
Answer:
The carp out-competed the native species for food and space.
Explanation:
Which of the following elements are found in ALL four biomolecules? Select all of the correct answer choices.
Carbon
Helium
Hydrogen
Oxygen
Nitrogen
Phosphorous
Answer:
everything but Helium and Phosphorous
Explanation:
How does the body plan and anatomy enable the chordate to perform essential functions it needs to survive?
Answer: Keep in mind invertebrates are those who have exoskeletons (outside skeleton) or are hydrostatic (no skeleton). This make up 95% of all animals for example an ant or sponge. For a sponge, all it has is tissues that enable it to allow water to flow out the tops.
2.) Chordata are anything with vertebrates so a simple fish could suffice. THEY HAVE 4 SPECIFIC CHARACTERISTICS: 1.Notochord 2.Dorsal, hollow nerve cord 3.Pharyngeal slits 4.Muscual, an.al tail
3.) This is us, we have thumbs, and vertebrates. brainliest
Explanation:
Answer:
b
Explanation:
what is the food that cat CAN'T eat 1.chocolate
2.milk
3.yogurt
4.salt
select 2 of them
Answer:
MILK
AND
CHOCOLATE
MARK ME AS BRAINLIST
Answer:
Chocolate & salt....the other two r milk products, so it's fine for cats.
Describe the process of how an Igneous Rock is created
Answer: Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. ... When lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools very quickly.
why are leaves included in experiments
Historically, the use of wells appears in the __________.
A)
Old Stone Age
B)
New Stone Age
C)
Bronze Age
D)
Iron Age
E)
Copper Age
Historically, the use of wells appears in the __________.
A)
Old Stone Age
B)
New Stone Age
C)
Bronze Age
D)
Iron Age
E)
Copper Age
Answer:
pretty sure it's B
Explanation:
Answer:
ITS C
Explanation:
EDG
10
What complementary mRNA is made from the following DNA strand AAG-CTG-CCT *
(1 Point)
TTC-GẠC-GGA
UUC-GAC-GGA
TUC-GAC-GGA
UUC-GUC-GGA
No Answer
Answer:
a
Explanation:
how have humans changed the carbon cycle
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
i need help on fiding a plant that is really interesting and different and show me the picture please
The human immune system detects the presence of pathogens using pattern recognition receptor molecules that bind to common components of pathogens, such as peptidoglycan polymers in cell walls and the flagellin protein of bacterial flagella, known as pathogen-associated molecular patterns, or PAMPs. These receptors are effective becauseGroup of answer choicesthey detect only human immune molecules.they result in rapid evolution of the host immune system.they recognize evolutionarily conserved molecules that are structurally essential to the various bacteria that use them.PAMPs evolve more quickly than other pathogen molecules.
They recognize evolutionarily conserved molecules that are structurally essential to the various bacteria that use them.
What are Pattern recognition receptor molecules?Pattern recognition receptor molecules detect pathogen-associated molecular patterns (PAMPs), which are structurally conserved components of pathogens such as bacteria, viruses, and fungi. These molecules are essential for the survival and function of the pathogen, and are not found in the host's cells.
By recognizing PAMPs, the immune system can quickly identify and respond to a wide range of potential pathogens, without needing to recognize every individual pathogen separately. Therefore, the receptors are effective because they recognize evolutionarily conserved molecules that are structurally essential to the various bacteria that use them.
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What is the energy source for producers, consumers, and decomposers?
Answer:
They obtain their energy from the sun and make food with that energy through the process of photosynthesis.
What is a cell? Why is it called the basic unit of life?
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What is a cell? Why is it called the basic unit of life?
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Cells are the basic unit of life, all living organisms are made up of cells, which means cells make up humans, plants and animals. Nonliving things on the other hand are composed of chemical elements and compounds.
Note: My answer is based on my understanding of your question.
Hopefully Help:)
#CarryOnLearning#NoToPlagirismWhich scientist proposed that if an organism used a structure so much that it grew, the trait of that larger structure could be passed to its offspring?
O Eramus Darwin
O Jean-Baptiste Lamarck
O Georges de Buffon
O Charles Lyell
Answer!!!
True or False: Trampling of plants by animals is an example of a biotic factor.
Answer:
false
Explanation:
i am sorry if it is wrong
The trampling of plants by animals is not an example of a biotic factor, while animals and plants are examples of biotic factors. Hence, it is false.
What are biotic factors?A living thing that alters its surroundings is referred to as a biotic factor. Examples of organisms found in a freshwater habitat include algae, fish, amphibians, and aquatic plants. A particular ecosystem is the result of the interaction of biotic and abiotic components.
A living entity that influences another organism in its ecosystem is referred to as a biotic factor. Examples include the plants and animals the organism eats as food and the animals it consumes.
The trampling of plants by animals is not a biotic factor while living organisms and plants are biotic factors. Hence, it is false.
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What would be the best reason for having the lamp on during the experiment
Answer:
I'm not entirely sure what the experiment is BUT if I had to guess it would to help you see.
Explanation:
Sorry, I couldn't help it. In all reality I'm not possitive as to what the experiment is so I can't really give you a true answer besides this one