Answer:
Plateau phase
Explanation:
During the d. plateau phase of the action potential, calcium ions enter the contractile cell as potassium ions exit.
The action potential is a process that occurs in excitable cells, such as cardiac muscle cells. It involves a series of changes in membrane potential that result in the contraction of the muscle cell.
During the plateau phase of the action potential, the membrane potential of the contractile cell is maintained at a relatively constant level. This is due to a balance between the inward flow of calcium ions and the outward flow of potassium ions.
In this phase, calcium ions enter the cell through voltage-gated calcium channels, which open in response to depolarization. The influx of calcium ions helps sustain the depolarization and maintain the contractile cell in an excited state. Calcium ions play a crucial role in initiating muscle contraction.
At the same time, potassium ions exit the cell through potassium channels. This outward movement of potassium ions contributes to the repolarization of the cell, restoring the membrane potential back to its resting state.
The plateau phase is an important component of the action potential in cardiac muscle cells. It prolongs the depolarization phase and ensures sufficient time for the contraction of the heart muscle. The balanced movement of calcium ions entering the cell and potassium ions exiting the cell during the plateau phase contributes to the proper functioning of cardiac muscle and the coordination of cardiac contractions.
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The complete quesiton is:
During what phase of the action potential will calcium ions enter the contractile cell as potassium ions exit?
a. repolarization phaseb. rapid depolarization phasec. initial repolarization phased. plateau phaseii) Name one other thing that weight that affects how much energy you need each day.
Persons who eat 18-30 grams of ________ are less likely to suffer from constipation, diverticulosis, heart disease, obesity, diabetes mellitus, and certain cancers, compared to those who eat minimal amounts.
A) fiber
B) sugar substitutes
C) carbohydrate substitutes
D) carbon nutrients
Answer:
A.) Fiber
Explanation:
Got from Quizlet...
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What would happen to the rate of a reaction if the concentration of substrate was increased after the point of saturation?
The reaction rate would increase
The reaction rate would decrease
There would be no effect
Numbness in the limbs, visual disturbances, muscle weakness, and urinary problems can all be symptoms of ____
Answer:
Aside from numbness, weakness, restless leg syndrome and fatigue there are numerous symptoms associated with multiple sclerosis – some more common than others. Common symptoms of MS Walking difficulties – weakness, spasticity, loss of balance, sensory deficits and fatigue can all be contributing factors
Explanation:
Finding Nemo Genetics
1. Use the information in the table of Nemo's traits to write the phenotype for each item:
Trait
Dominant
(a) Rr
(e) Ee
Gene
(b) TT
(f) rr
Color
Body Shape
Pattern
Fin Shape
Orange (G)
Round (R)
Striped (1)
Curved (E)
Recessive
Gene
Red
Oval (r)
Spotted (t)
Flat (e)
(c) ee
g) GG
(d) 88
(h)
Two parents have the genotype Gg for a genetic disorder caused by a dominant allele. What is the chance that any of their children will inherit the disorder
What is a sugar that cannot be extracted from plants.
Answer:
LactoseExplanation:
Lactose is the only sugar that cannot be extracted from plants. It can only be found in milk, including human breast milk, and in some dairy products.
What is the probability of the offspring having red-green color blindness for the cross that is represented by the Punnett square? 0 percent 25 percent 50 percent 75 percent.
Answer:
B. 25%
Explanation:
100% on unit test review
To determine the probability of the offspring having red-green color blindness from the Punnett square, we need to know the genotypes of the parents. The probability of having a female offspring with normal color vision (X^RX^R genotype) is 0%, and the probability of having a male offspring with normal color vision (X^RY genotype) is also 0%.
What is Red-green color blindness?
Red-green color blindness is a sex-linked recessive trait that is carried on the X chromosome. Females have two X chromosomes, while males have one X and one Y chromosome. A female who carries one normal X chromosome and one X chromosome with the color blindness allele is said to be a carrier.
A male who inherits the color blindness allele on his X chromosome will have the condition because he does not have a second X chromosome to compensate for the mutation.
Assuming that the mother is a carrier (X^RX^r) and the father is not color blind (X^RY), the Punnett square would look like this:
| X^R | X^r
--|------|-----
X^R| X^RX^R| X^RX^r
--|------|-----
X^Y| X^RY | X^rY
The possible genotypes of the offspring are X^RX^R, X^RX^r, X^RY, and X^rY.
X^RX^R: Female with normal color vision.
X^RX^r: Female carrier with normal color vision.
X^RY: Male with normal color vision.
X^rY: Male with red-green color blindness.
From the Punnett square, we can see that there is a 50% chance that the offspring will inherit the normal X chromosome from the mother and a 50% chance that they will inherit the normal X chromosome from the father.
Therefore, the probability of having a male offspring with red-green color blindness (X^rY genotype) is 50%, and the probability of having a female carrier offspring (X^RX^r genotype) is also 50%.
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Where in a eukaryotic cell would you find chromatin?.
Answer:
the nucleus
Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus.
what does photosyntihies occur in
Answer:
Chloroplasts
Explanation:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in carbohydrate molecules, such as sugars and starches, which are synthesized from carbon dioxide and water.
A chloroplast is a type of membrane-bound organelle known as a plastid that conducts photosynthesis mostly in plant and algal cells.
“how many eggs form in meiosis? what else forms and why “
Answer:Meiosis contains two separate cell divisions, meaning that one parent cell can produce four gametes
Explanation:
because I am smart
Answer:
One egg forms in Meiosis.
as well as Four Gametes
Explanation:
are herbivores primary, secondary, or tertiary consumers, explain your answer.
Answer:
Primary
Explanation:
Herbivores eat plants at the lowest part of the chain and go on to be eaten by secondary consumers
Water moves through several parts of the root hair cell, as it goes from the soil into the sap vacuole. list these parts in order
Which molecule is equipped with an anticodon and transports amino acids?.
In looking at the relationship between hunger and conditions of the stomach, researchers have discovered that
In looking at the relationship between hunger and conditions of the stomach it was found out that rats whose stomachs are removed continue to eat regularly.
What is Hunger?Hunger is referred to as the desire to want food in order to provide the required nutrients needed in the body.
Researchers studied the relationship between hunger and conditions of the stomach and found out that removal of the stomach of the rat didn't stop it from satisfying its hunger by eating regularly.
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What causes soils and their horizons to differ? a. Differences in climates where the soils are formed b. Differences in plant and animal life in different locations c. Differences in the layout of the land d. All of the above Please select the best answer from the choices provided A B C D.
The causes for the soil and their horizons to differ are differences in climatic conditions where soils are formed, differences in organisms in different locations, and differences in the distribution of the land. So, option D is correct, i.e. all of the above.
What is soil horizon?A soil horizon is a layer-by-layer parallel distribution of soil surface, whose physical, chemical as well as biological characteristics are varied from layer to layer.
The native habitat of every plant and animal life differs from place to place, the distribution of the land varies throughout the world, and there are different climates where soils are formed. So, the characteristics of soil depend on climatic conditions, organisms living in a particular area, and geographical locations.
Therefore, option D, i.e. All of the above is the correct option.
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Which plant can survive in dry environments
Answer:
Many plants like Cactus
What are the genotypes of each blood type, and which blood type is an example of co-dominance?
Answer:
AA, AO, AB, BB, BO, and OO, with AB being co-dominance.
Explanation:
The AB blood type is co-dominant since both the A and B alleles are expressed. Please note that sometimes textbooks and teachers prefer the more correct use of I^A ect. I'll put a picture below to show you.
Another note: There are only four phenotypes but technically 6 genotypes, the reason being that AO is expressed as A and BO is expressed as B.
Let me know if you have further questions.
A master control gene that can control many aspects of entire organs.
Answer:
Homoeotic genes
Explanation:
Homeotic genes: master control genes that regulate organs that develop in specific parts of the body. I think this is correct as the Homeotic gene is known as the master control gene so it should be correct. Sorry if there are any mistakes i am not fluent in english.
What do plant, animal and bacteria cells have in common?
A
cell walls, cytoplasm and endoplasmic reticulum
B
DNA, chloroplasts and cytoplasm
C
cell membranes, DNA and lysosomes
D
DNA, cytoplasm and cell membranes
Answer:
D
DNA, cytoplasm and cell membranes
Which of the specialty areas do you think you would most like to work in? Why?
Answer:
Well i believe it depends on the person you are because then what ever specialty you enter you reward full and enjoyable e.g
If your a caring or find happiness in helping others then you can enter specialties around it and not be disappointed in tour choices
Also I would like to add if you do regret your choice then you can switch careers if you really think that work suits you more. I have a friend who used to be an head engineer for a car dealer ship but ended up switching careers at 37 years old. So don't think that you entering a certain specialty mean you can never switch careers.
I whole heartedly wish you the best in what job you enter.
In the field of forensic science, the specialty area I would likely prefer to work in is forensic DNA analysis. This area offers a compelling blend of cutting-edge technology and critical investigative contribution.
The vital significance that forensic DNA analysis plays in contemporary criminal investigations makes it an intriguing specialization. It makes use of cutting-edge methods to enable the identification of individuals based on their distinctive DNA profiles. Its accuracy and capacity to definitively link or rule out suspects from crime scenes are what make this field significant.
Forensic DNA analyzers work with law enforcement to help them solve crimes while maintaining the rules of justice by analyzing genetic evidence. Forensic scientists would make an interesting and significant choice if they worked in this specialized field because it provides for a dynamic confluence of science and judicial proceedings.
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The given question is incomplete, complete question is- "As a forensic scientist, which of the specialty areas do you think would most like to work in? Why?"
In 3 to 5 sentences, explain how ears detect sound and how eyes detect light
The diagram below shows a cell going through a certain phase of mitosis.
Which of the following best describes what happens during the phase of mitosis shown in the diagram?
Choose 1 answer:
Answer:
(Option A) Nuclear membranes begin to form around the cell’s genetic material.
Explanation:
In the given image, it can be predicted that the nuclear envelop reappears around the cell's genetic material. The correct option is A.
What is mitosis?Mitosis is the process whereby a cell replicates and then separates its chromosomes, creates two identical nuclei in prep work for cell division.
Mitosis is commonly accompanied by the equal division of the cell's contents into two daughter cells with identical genomes.
Mitosis occurs in the following stages:
The chromosomes shorten and thicken during prophase. Metaphase - Chromosomes align in the center of the cell. Chromatids separate at the centromere and move to opposite poles during anaphase. Telophase - The formation of two nuclei after nuclear envelopes reform around each chromosome group.The image is showing telophase of the cell division mitosis, which is indicating that the nuclear envelop is being formed around the genetic material of the cell.
Thus, the correct option is A.
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In humans, brown eyes (B) are dominant over blue eyes (b). Monica has blue eyes and Chandler has brown eyes. They have a son named after Monica's brother Ross, who has blue eyes. Which of the following statements is incorrect?
Monica's genotype is BB
Chandler's genotype is Bb.
Ross's genotype is bb.
Ross inherited a b allele from Monica and a b allele from Chandler.
Answer:
Monica's genotype is BB is inorrect becuase BB shows that hse would have brown eyes when she has blue eyes.
Explanation:
Answer:
"monicas genotype is BB" is incorrect
Explanation:
for ross to have blue eyes, chandler must have the genotype Bb, and monica must have bb. monica cannot have BB because that would give her brown eyes
In Mendel's cross for stem height, what contrasting traits did the pea plants in the P generation exhibit?
Answer:
tall and dwarf pea plants
How many copies of dna are required to see bands on the electrophoresis gel.
Two DIFFERENT seeds are planted in the same amount of soil, light, same type of pot, and receive the same amount of water. This experiment is probably testing the impact of ...
plants genetics
plants environment
Please help, thank you, god bless you all
Answer: plants genetics :)
Explanation:
The environment is the same in this case and since it is two different plants then it must be plant genetics
Nutrient cycles can all be classified as
A. Abiotic Factors
B. Biotic Factors
C. Unnatural
D. Causal Factors
Place the nucleotides in the correct order to create a strand of mRNA.
TAC GAC TGG ATC
UAG CUG ACC AUG
Answer:
UTC CTG UCC TUG
TTC GTC TGG TTC
Part A: Forming a Thesis
A thesis statement is the central idea of your argument. It should be focused and provide answers to the question, What am I trying to claim? It should tell listeners how you think Earth’s climate zones will change over the next century. Write your thesis statement in the answer space.
In this case, the thesis statement may be 'it is expected that Earth’s climate zones will change suddenly in the next years'. The thesis statement is generally a sentence.
What is a thesis statement?A thesis statement is generally one direct sentence that resumes the key points of a scientific investigation.
In a scientific publication, the thesis statement is often located at the final of the Introduction.
This sentence (thesis statement) is used to explain some central ideas of the work such as the topic attained by the investigation, as well as the reasons to support my working hypothesis.
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