Answer:
The note A-natural sounds different on a tuning fork, a violin, and a flute because of the relative amplitudes of harmonics
Explanation:
got it right :3
what is gene gun method and microinjection
Answer:
The gene gun method is a method used for genetically modifying plants. With the use of a gene gun, the gene gun method delivers extra DNA directly into a plant's nucleus. The method is also commonly called particle acceleration or microprojectile bombardment.
Hope it helps...
Have a great day : )
an organisms habitat must provide all of the following except
Answer: Predators (trust me)
Answer:
except what? there are no possible answer
Explanation: Please give possible answers
Action Potential: Relative refractory period
In a neuron, there is a period of time called the absolute refractory period where it is impossible for an action potential to
begin. This corresponds to the change in membrane potential from +30 to -70 mV, or the repolarization phase. Towards the
end of the repolarizing phase, there is a relative refractory period where it is difficult, but not impossible, for another action
potential to begin. Using the time slider function, which of the following segments in the neuron would correspond to a
relative refractory period?
A second action potential can be triggered during the relative refractory phase, but it will need a stronger stimulus to do so than the first time. Refractory times are brought on by the inactivation gate of the Na+ channel.
What Action Potential related to Relative refractory period?The axon has a tougher time producing successive action potentials during this time period, which is referred to as the refractory period, as a result of these transient alterations.
As a result, the refractory period restricts the quantity of action potentials that a certain nerve cell can generate in a given amount of action potentials time.
If enough powerful stimuli are applied to the neuron after the absolute refractory time, Na+ channels start to recover from inactivation and the neuron may respond once again by generating action potentials.
Therefore, A stimulus that is stronger than usual is required to generate neuronal activation during the relative refractory period.
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What does a recombination frequency of 50% indicate regarding linkage?
Answer:
Explanation:
A recombinant frequency significantly less than 50 percent shows that the genes are linked. A recombinant frequency of 50 percent generally means that the genes are unlinked on separate chromosomes. The remainder of this chapter focuses mainly on linked genes and recombinants arising from crossing-over.
Answer:
A recombinant frequency significantly less than 50 per cent shows that the genes are linked.
Explanation:
A recombinant frequency of 50 per cent generally means that the genes are unlinked on separate chromosomes.
Elliptical galaxies form a perfect sphere or an ellipse.
True
False
Answer:
True
Explanation:
A group of billions of stars in space is known as a galaxy. ... Irregular ones do not have specific shape and elliptical galaxies are three dimensional. It has ellipsoidal shape which formed of deformation of sphere and looks like ellipse. Hence, the given statement is true.
HELP PLS BRAINLIEST
Tubelike cells that carry food from the leaves to other parts of the plant are called?
Question 1 options:
Xylem
Phloem
Chloroplasts
Answer:
Phloem carry food from the leaves to other parts of the plant
Explanation:
Xylem carry water
Chloroplasts are organelles in cells wich allow the plant to photosynthesise
In order for a protein to be an integral membrane protein it would have to be which of the following?
a. hydrophilic
b. hydrophobic
c. amphipathic
d. completely covered with phospholipids
e. exposed on only one surface of the membrane
Answer:
amphipathic, with at lest one hydrophobic region
Explanation:
For a protein to be an integral membrane protein it would have (C) : amphipathic
Amphipathic is a chemical property of a protein molecule whereby it has both hydrophilic and hydrophobics portions in the its molecule. ( i.e. It contains water soluble and non-water soluble portions ) and for a protein to be an integral membrane it has to posses both water soluble and non-water soluble portions in its molecule.
Hence we can conclude that for a protein to be considered an integral membrane protein it will posses an Amphipathic property.
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The air in the thermosphere becomes thinner and thinner until it fades into space. True or false
Answer:
Well to be honest there are no unmistakable separating lines. Each layer mixes into the layer above it and the layer underneath it. Researchers are certain that the air becomes thinnerand more slender farther from the Earth's surface, until it at long last blurs off into space.
Explanation:
Answer:true
i cant explain they wont let me put in l-i-n-k-s
:)))))))))help me plsss
Explanation:
1. The materials are physically combined because all of the materials including the sand, salt, and iron fillings are their own substances and they maintain their original form. This is a mixture and they aren't chemically combined.
2. To separate each of the materials physical means would be used because since they're their own individual substances and have kept their original form they're mixed and not chemically combined.
3. The iron and oxygen atoms in rust are chemically combined because they are no longer individual substances and haven't kept their original form, so therefore they're a chemical combination.
Why is it important that tissues are composed of specialized cells?
Help melee please...
Answer:
25%
Explanation:
The image is the punnet square. :)
What does it mean for a virus to "infect" a cell?
Tir
11
The virus lands on the outside of the cell and remains there until the cell produces more viruses.
The virus lands on the outside of the cell and eats proteins on the surface of the cell.
The virus lands on the outside of the cell and injects its genetic material into the cell.
The virus lands on the outside of the cell and injects its proteins into the cell.
Answer:
I think the answer is...
the virus lands on the outside of the cell and injects its genetic material into the cells
i'm not sure but this is what I think...
Explanation:
Viruses usually inject their all genetic material into one cell to individual virion contains multiple copies of its fusion protein.
What is a trace fossil?
*USE YOUR OWN ANSWER*
Answer:
Its basically traces of an animal and not the actual animal. For example footprints.
Explanation:
Other than enzymes, what else can be used to separate the DNA strands?
Answer:
The enzyme responsible for separating the two strands of DNA in a helix so that they can be copied during DNA replication.Explanation:
1
What is the original source of energy for most ecosystems?
A.grass
B.humans
C.the sun
D.heat
Answer:
C. The sun
Explanation:
The sun provides energy for the plant to do photosynthesis. Since all animal species depend on plants qnd the sun helps the plants, the sun is the original source of energy.
Answer:
C,The sun
Explanation:
the vast majority of energy in food webs originates from the sun
Explain why a person with brain damage may be able to see perfectly well, but not recognize faces.
What will happen to a tide pool itself if star fish are removed from the ecosystem?
Answer:
the ecosystem will be disturbed... the animals feeding on it will be reduced due to lack of food and the animals on which the star fish was feeding will be increased which causes a total imbalance in ecosystem..
Which of the following correctly describes a cell that is haploid. There is more then one correct answer.
A cell with a single set of chromosomes
Includes zygotes
In humans contains 46 chromosomes
In humans contains 23 chromosomes
All cells except gametes
Includes gametes
A cell with two sets of chromosomes
Explanation:
a cell with a single set of chromosomes
in humans contain 23 chromosomes
includes gametes
Similarities between tridax plant and elephant grass
Answer:
ok so basically they just
An individual with two different alleles for the same gene is
called
Answer:
an individual with two same alleles genes is called a heterozygous
Sickle cell anemia is an inherited form of anemia - a condition in which there aren't enough healthy red blood cells to carry adequate oxygen throughout your body.
Normally, your red blood cells are flexible and round, moving easily through your blood vessels. In sickle cell anemia, the red blood cells become rigid and sticky and are shaped like
sickles or crescent moons. These irregularly shaped cells can get stuck in small blood vessels. How does sickle cell anemia affect the blood flow in a human?
Answer:
RBCs are round red blood cells that easily move through blood vessels and carry oxygen with them to provide cells oxygen. In sickle cell anemia, the shape of the red blood cells is like sickles or crescent moons.
These cells occur due to mutation on the gene that produces this protein which results in rigid, sticky cells that can get stuck in small blood vessels and blocks the flow of blood, oxygen to parts of the body.
Which of the following is a difference between phase I and phase II of meiosis?
Phase I results in daughter cells with 23 chromosomes each and phase II with 46 chromosomes each.
Phase I results in two diploid daughter cells and phase II results in four haploid daughter cells.
Anaphase, metaphase, and telophase only occurs during phase I of meiosis.
Genetic variations can only occur during phase II of meiosis.
1.why is it important for gametes to be haploid?
They fuse to form a diploid organism so there is a correct number of chromosomes
2. The inheritance pattern of one gene will not affect the inheritance pattern of another gene. This is known as
independent assortment
3. which of the following is a difference between phase I and phase II of meiosis?
Phase I results in two diploid daughter cells ans phase II results in four diploid daughter cells
4. what is heredity?
The passing of genetic information from parents to their offspring
5. during meiosis sister chromatids may exchange sections of DNA leading to genetic diversity what is this process called?
crossing-over
TOOK TEST
The difference between phase I and phase II of meiosis is: Phase I results in two diploid daughter cells and phase II results in four haploid daughter cells.
MEIOSIS:
Meiosis is a kind of division that results in the formation of four haploid daughter cells that are genetically different from one another. Meiosis occurs in a two step division process namely: meiosis I and meiosis II. Meiosis I involves division of homologous chromosomes and produces two daughter cells that are diploid (2n) while meiosis II involves the division of the sister chromatids and produces haploid (n) chromosomes. Therefore, the difference between phase I and phase II of meiosis is: Phase I results in two diploid daughter cells and phase II results in four haploid daughter cells.Learn more at: https://brainly.com/question/12327654?referrer=searchResults
Morphine is created from what type of plant
Per my research, Morphine is one of the many, and pharmacologically most important, opium poppy alkaloid (Papaver somniferum). A poppy plant consists of a lot of alkaloids.
Explanation:Correct me if I am incorrect but this is what I got during my research. Have a good one and I hope this somewhat helped.
✍(◔◡◔)The enzyme that performs transcription binds to a site called?
Answer:
The promoter is the binding site for RNA polymerase, the enzyme that performs transcription.
Explanation:
The operator is a negative regulatory site bound by the lac repressor protein. The operator overlaps with the promoter, and when the lac repressor is bound, RNA polymerase cannot bind to the promoter and start transcription.
Why is family history thought to be important and a good predictor of an individual’s disease risk factor?
Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience
Because doctors can determine your family’s risk from your ailments
It is important to know family history so that a doctor can issue the right antibiotic to prevent cancer
So that doctors can know how your 1 st line of defense reacts to antibiotics mi
Answer:
The first answer, Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience. Is right
Explanation:
Which of the following occurs first in meiosis?
1. Homologous chromosomes line up in the center of the cell.
2. Chromosomes line up in the middle of each cell.
3. Crossing over between segments of homologous chromosomes.
4. Chromosomes are pulled to opposite poles of the cell.
Answer:
Crossing over between segments of homologous chromosomes.
Explanation:
Crossing over happens during prophase I of meiosis I
I am the Bio-molecule responsible for storing
unused energy and can be used by living
organisms as long term, slow energy.
Answer:
It's LIPID
Explanation:
storing unused energy. Long time storage of energy.
What needs to happen in order for two populations to be isolated?
Answer:
Isolation means that organisms of the same species are separated, and happens when there is something between the organisms that they can't cross.
Explanation:
Organisms become isolated as a result of environmental change. The cause of isolation can be gradual, like when mountains or deserts form, or continents split apart.
PLZ HELP THIS IS TIMED!!!!!\
ATP is made during the Krebs cycle between two molecules
A.Succinyl COA
B.Fumarate
C.Malate
D.Alpha Ketoglutarate
E.Succinate
Answer:
The answer should be A,if not than sorry!
What is a density dependent limiting factor that affects population size?
-Drought
-Climate
-Natural Disasters
-Disease
Answer:
Disease
Explanation:
In Ecology, certain factors that affect the size of a population can either be dependent on size or not. Density-dependent factors are those factors that affect population of organisms in dependence of how dense the population is. Examples of these density dependent factors are diseases, predation etc.
For example, a certain disease will spread faster among a population of organisms whose size is dense but slower in a scarcely densed population. Hence, disease as a factor is dependent on population size. Note that; Drought, Climate, and Natural Disasters will wipe out a population irrespective of its size.
Answer:
Disease
Explanation:
