The Kirkwood gap is an asteroid belt region situated between the orbits of Mars and Jupiter that has a significant depletion of asteroids. This chasm is caused by Jupiter's gravitational pull, which causes asteroids to move around and destabilase their orbits.
What is Kirkwood gap?The Kirkwood gap is an asteroid belt region located between the planetary orbits of Mars and Jupiter that has a significant depletion of asteroids. This chasm is caused by Jupiter's gravitational pull, which causes asteroids to migrate and destabilize their orbits.
Jupiter's gravity has a major influence on the asteroid belt, causing their orbits to grow unstable and potentially crash with other objects. As a result, asteroids in some asteroid belt regions may be expelled from their orbits or smash with other things, leaving gaps or areas with fewer asteroids.
The Kirkwood gap was named after the American scientist Daniel Kirkwood, who first observed the decrease of asteroids in this region in the year 2000.
Therefore, the Kirkwood gap is an asteroid belt region situated between the orbits of Mars and Jupiter that has a significant depletion of asteroids.
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what is the difference between red blood cell, white blood cell and platelets in table
Answer:
La principal diferencia entre los glóbulos rojos y los glóbulos blancos es su función;
la sangre roja transporta oxígeno por todo el cuerpo mientras que los glóbulos blancos participan en la defensa de los animales,
destruyendo los patógenos que invaden las células del cuerpo.
Las plaquetas son responsables de la coagulación de la sangre.
Explanation:
What is the best definition for the term 'peer review?'
o
A. When you are given of review of how well you work by your coworkers.
B. When research is scrutinized and re-tested by others who are experts in the same area.
C. When people of the same age read each other's work.
D. When research is published to the general public for them to form opinions on it.
Reset Selection
What will be the impact on productivity of plant if CO2 reduction stops during photosynthesis?
Answer:
As carbon dioxide concentrations increase, the pores don't open as wide, resulting in lower levels of transpiration by plants and thus increased water-use efficiency.
Explanation:
Which of the following is an example of a
homologous trait?
A. the wings of bees and birds
B. the forearm of different animals
C. the DNA of land animals
Answer:
the wings on bees and birds
An example of a homologous trait is the wings of bees and birds. The correct option is A.
What are homologous traits?The Theory of Evolution can be used to explain the homologous features of related species. According to this hypothesis, species develop over time from a common progenitor.
In order to adapt to the new environment, species separated from one another and developed new features. The variety of species observed on Earth today is the result of a process known as speciation.
The homologous features that are shared by related species are proof of their shared ancestry. For instance, despite being different, the wings of a bat and a bird share characteristics.
Therefore, the correct option is A. the wings of bees and birds.
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An ecologist studied the same species of deer during the summer and the winter. She noticed that during the summer, when there was plenty of food, the deer were energetic and playful. However, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator.
Which scientific fact is best supported by her observations?
A.
Some deer species will eat the bark of trees.
B.
Food is the fuel that gives animals energy.
C.
Food provides building materials that animals use to grow.
D.
Carnivores eat primarily the meat of other animals.
Conteste los siguientes enunciados, registrando (F) si es falso y (V) si es verdadero. 1. ( ) Una mujer portadora de hemofilia, transmite el alelo portador de la enfermedad al 100% de sus hijos. 2. ( ) Cuando un gen está ligado al cromosoma X con mecanismo de herencia recesivo, significa que el 100% de las mujeres pueden manifestar un fenotipo anormal. 3. ( ) Cuando un gen está ligado al cromosoma X con mecanismo de herencia dominante, significa que el 100% de los hijos varones de un hombre enfermo, pueden manifestar el fenotipo anormal. 4. ( ) En la herencia ligada al cromosoma Y, significa que el fenotipo anormal está presente en el 50% de las mujeres. 5. ( ) Dentro de las enfermedades ligadas al cromosoma Y se encuentra la hemofilia.
Answer:
1. Verdadero
2. Falso
3. Falso
4. Falso
5. Verdadero
Explanation:
Los seres humanos, como así también la mayoría de los mamíferos, poseen dos cromosomas sexuales: un cromosoma X y un cromosoma Y. Las hembras poseen 2 cromosomas X (un cromosoma X es heredado de la madre y el otro cromosoma X es heredado del padre); mientras que los hombres tienen un cromosoma X y un cromosoma Y (el cromosoma X es heredado de la madre, mientras que el cromosoma Y es heredado del padre). La hemofilia es una enfermedad recesiva monogénica ligada al cromosoma X, la cual está caracterizada por cuadros hemorrágicos causados por el déficit parcial y/o total de factores de coagulación. Los hombres expresan el fenotipo recesivo con mayor frecuencia que las mujeres para aquellos genes que se encuentran en el cromosoma X y poseen un mecanismo de herencia recesivo, esto debido a que los hombres sólo poseen una copia del alelo ligado al X (lo que hace que el alelo recesivo se exprese con mayor frecuencia en el fenotipo). De este modo, los hombres manifiestan hemofilia con mayor frecuencia que las mujeres porque en mujeres el gen recesivo necesita la presencia de dos copias del alelo defectuoso recesivo para que se exprese en el fenotipo hemofílico (es decir, las mujeres heterocigotas son portadoras de un alelo defectuoso pero no expresan la condición en el fenotipo), mientras que en los hombres la presencia de un sólo alelo defectuoso localizado en su único cromosoma X es suficiente para la expresión del fenotipo recesivo. En hombres, los genes ligados al cromosoma X son siempre heredados de la madre (los hombres heredan del padre el cromosoma Y). Finalmente, la herencia de caracteres ligados al cromosoma Y es muy rara porque los genes localizados en la región diferencial del cromosoma Y son escasos y estos genes solamente pueden ser trasmitidos de padres a hijos varones (ya que se encuentran en el cromosoma Y).
How does carbon dioxide pass through the stomata of a leaf?
Answer:
It moves by diffusion through small holes in the underside of the leaf called stomata .
Explanation:
hopes it helps
Answer:
Explanation: When a plant does photosynthesis carbon dioxide needs to move from the air into the leaf through small pores called stomata
I'm not really sure about this one but that's what I think
Why are genetically engineered mammalian cells sometimes needed to produce certain proteins instead of genetically engineered bacteria?
A. Mammal cells are larger and can produce greater volumes of protein.
B. Mammalian cells are not needed; bacterial cells can produce the same proteins as long as they have the gene that codes for it.
C. Mammal cells have more precise restriction enzymes.
D. Bacteria make proteins differently than mammals, and cannot make certain human proteins.
Answer:
C
Explanation:
As mammal cells have more precise restriction enzymes, it sometimes needed instead of bacteria. The correct option is C.
What is genetic engineering?Genetic engineering also referred to as genetic modification is a process that uses laboratory-based technologies to alter an organism's DNA makeup.
Because mammalian cells have more precise restriction enzymes, it is sometimes necessary to use them instead of bacteria.
Herbert Boyer and Stanley Cohen, biochemists, create genetic engineering in 1973 by implanting DNA from one bacteria into yet another.
There are three basic stepping stones to genetic engineering. These are:
Isolating DNA fragments from a donor organism.Inserting an isolated donor DNA fragment into a vector genome.Growing a recombinant vector in an appropriate host.Thus, the correct option is C.
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YOUR RESPONSE REQUIRES A 3-5 SENTENCE PARAGRAPH.
Do you believe that you can ask questions to better understand the role that DNA has in making who you are? Explain. If you can not explain, what do you need to be able to do so.
Explanation:
Questions on DNA Structure. What is a "strand" of DNA? How many strands make up a DNA double helix? Each strand is made up of two zones or regions.
How does random mating keep a
population in Hardy-Weinberg
Equilibrium?
A. Choosing a random mate creates variation which helps
the population evolve.
B. Individuals choose their mates causing only certain
traits to be passed on.
C. Mates aren't chosen based on traits so all alleles are
equally likely to be passed on.
D. When all the females of a population randomly choose a
mate and only certain alleles get passed on.
Answer:
A
explanation:
. Most of the matter in the universe: A. Exists within stars B. Is made when planets are formed C. Is unknown, called dark matter and energy D. Is blue-shifted
Answer:
B
Explanation:
is made when planet are formed
What is the dental formula of a cow
What role does Helicaase play in DNA replication?
A: Helicase connects the floating nucleotides to the template strands
B: Helicase breaks hydrogen bonds and unwinds a section of DNA.
C: Helicase checks the base pairs in each new strand of DNA.
D: Helicase bonds together pieces of DNA as new strands form.
Answer:
B
Explanation:
Helicase is the enzyme that unwinds the DNA by breaking hydrogen bonds between the two strands. It forms the so called replication fork.
An ampicillin-resistant, tetracycline-resistant plasmid, pBR322, is cleaved with PstI, which cleaves within the ampicillin resistance gene. The cut plasmid is ligated with PstI digested Drosophila DNA to prepare a genomic library, and the mixture is used to transform E. coli K12. Which Antibiotic should be added to the medium to select cells that have incorporated a plasmid
Answer:
tetracycline
Explanation:
A plasmid is a small, circular, double-stranded DNA molecule, which is physically separated from chromosomal DNA and is able to replicate independently. Moreover, plasmid transformation is the process by which exogenous DNA is introduced into a cell (usually a bacterial host cell). In this case, Escherichia coli K12 cells were transformed with the pBR322 plasmids that encode both ampicillin and tetracycline resistance genes. According to data, plasmids were firstly cleaved with the PstI type II restriction endonuclease within the ampicillin resistance gene, thereby these plasmids lose the ampicillin-resistance gene that allows selecting E. coli K12 cells by their resistance to ampicillin. In consequence, tetracycline is the only one selective marker that will indicate that the bacteria have incorporated the plasmid.
The Pasteur effect shows that yeast consume glucose at a higher rate under anaerobic conditions than under aerobic conditions. Which of the following statements correctly explains this observation?
A. Less ATP is made under anaerobic conditions, so more glucose must be consumed to produce an equivalent amount of ATP.
B. Yeast are photosynthetic, so they are able to produce their own oxygen.
C. This observation is incorrect.
D. Aerobic conditions mean that cells make more ATP and use more glucose.
E. Yeast are obligate anaerobes, so aerobic conditions will kill yeasts.
Are there possible risks/harms that the genetic engineering process can cause to the public? How could this be prevented/minimized? How would humans benefit from this process?
Answer:
Harms: May cause nasty diseases and all sorts of bad things if not engineered properly.
We would benefit by basically being where we are now. We used a lot of genetic engineering to get our technology to the point it is now.
Explanation: Kind of hard to turn back from genetic engineering as it is a potentially useful process.
Write down the functions of
1.microtubules
2.tripletsof microtubules
Answer:
Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility
Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.
Hope it helps :)
Answer:
Microtubules have several functions. For example, they provide the rigid, organized components of the cytoskeleton that give shape to many cells, and they are major components of cilia and flagella (cellular locomotory projections). They participate in the formation of the spindle during cell division (mitosis).
triplet microtubules are linked together to make the walls of the cylinder.
Explanation:
4. What effect does light have on plant growth?
Hypothesis:
Independent variable:
Dependent variable:
Answer:
this is your answer take it
Explanation:
And mark me brainlist please like also
Question 7 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
O A. Transport proteins allow only enzymes to pass through the
membrane.
O B. It is better for the cell if most molecules are prevented from
entering.
O C. The cell works better when it contains fewer proteins.
D. It helps the cell absorb as many different molecules as possible.
Answer:
The answer is D
Explanation:
As the cell is mostly dependant on ingested materials so this will help the cell to grow and perform other important activities in the cell
what is G1 phase in cell?
Answer:
The g₁ phase, gap 1 phase, or growth 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis.
What sources must health care workers use when deciding which abbreviations and symbols to use on the job?
a. Those listed in their textbooks
b. Those approved by the facility in which they work
c. Those listed in medical dictionaries and reference books,
d. Those provided by their professional organization.
Classify these hypotheses about the ocean as falsifiable or non-falsifiable.
The hypotheses about the ocean as
Falsifiable: 1) Limestone erodes faster than basalt when exposed to ocean salt water 2) Shallower tide pools support more algae growth.
Non-falsifiable is: 1) The rugged Panama coastline offers a wonderful experience for fishing enthusiasts. 2) Warm ocean water is more enjoyable to swim in than cool ocean water.
Limestone erodes faster than basalt when exposed to ocean salt water.
This hypothesis is falsifiable. One could conduct an experiment in which samples of limestone and basalt are exposed to ocean salt water and the rate of erosion is measured and compared between the two samples.
The rugged Panama coastline offers a wonderful experience for fishing enthusiasts.
This hypothesis is non-falsifiable. The statement is subjective and cannot be tested or proven true or false. What one person considers a wonderful fishing experience may not be the same for another person.
Shallower tide pools support more algae growth.
This hypothesis is falsifiable. One could conduct an experiment in which algae growth is measured and compared between different depths of tide pools.
Warm ocean water is more enjoyable to swim in than cool ocean water.
This hypothesis is non-falsifiable. The statement is subjective and cannot be tested or proven true or false. What one person finds enjoyable may not be the same for another person.
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can anyone help??? much appreciated
Answer:
I think true or maybe false don't mind ok but ithink it is true
Answer:
true
Explanation:
they use energy from the sun to convert water from soil and CO2 from the air to make nutrients like glucose
os protozoarios tambem sao chamados de?
Answer:
protozoário
Explanation:
esse é o outro termo para protozoários
make a molecule between 87Fr^+ and 6C^-4
Answer:
gdshmsdh b
hhfdycjmncd
Explanation:
csbnmbvdfhdfg
Which of the following statements about the Green Revolution is true?
A. The Green Revolution increased the biodiversity of crops grown around the world.
B. The Green Revolution bettered the environment by encouraging less fertilizer and
pesticide use.
C. The Green Revolution allowed countries that previously imported crops to become
crop exporters.
D. The Green Revolution was applied in the Americas but didn't have a global
impact.
The Green Revolution allowed countries that previously imported crops to become
crop exporters.
What is the Green Revolution?The Green revolution refers to the period of cultivation of high-yielding crops varieties especially grains by farmers beginning in the period of the 1940s to l960s.
The Green revolution resulted in increased food production among countries that usually imported food, so they became exporters.
Therefore, the Green Revolution allowed countries that previously imported crops to become
crop exporters.
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IN YOUR OWN WORDS, what is the definition for Zygote?
Answer:
Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.
Do leaves have other than. Green colour also have chlorophyll
Yes, leaves that are of any other colors than green also have chlorophyll. The green colour of chlorophyll is just hidden beneath other pigments of the leaf.
What two distinct features do sound waves have?
Amplitude and frequency
Frequency and decibels
Volume and amplitude
Volume and decibels
Frequency and volume
Answer:
amplitude and frequency
how do the respiratory system and the circulatory system exchange materials.
A) by receiving hormones with their cells
B) by attaching their cells to neuroendocrine cells
C) by the diffusion of molecules across a cell membrane
D) by the movement of molecules across a synapse
Answer:
C) by the diffusion of molecules across the cell membrane
