PLS HELP ASAP 50 POINTS!!
Select the homologous structures.
a. human arm
b. whale's flipper
c. bird's wing
d. cat's leg
Answers
Answer:
Flipper of a whale and bird's wing are homologous structures.
For more better explanation see below.
Explanation:
Flipper of Whale is homologus to the wing of a bird. Homologous organs - The structure which are similar in their morphology, anatomy, genetics and embryology, but dissimilar in their functions.
Flipper of whale and wing of bird has similar morphology and anatomy, but differ in their functions according to their species as well as the habitat where they live in.
A dolphin’s flipper, bird’s wing, cat’s leg, and the human arm are considered homologous structures. Whereas human beings have bones such as the humerus, ulna, radius, wrist bones, and fingers, these features appear as similar bones in form in the other animals. Bats, whales, and many other animals have very similar homologous structures, demonstrating that these creatures all had a common ancestor.
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Answer:
Human arm and cats leg
Explanation:
Related Questions
How do sponges eat? Also, I don't know what subject this falls under....soo
1. With a mouth
2. filtration
3. with help of its spicules
4. stinging tentacles
Answers
What causes stomach cramps?
Answers
Answer:
the main causes are, infection,abdominal growth,inflammation,obstruction blockages
Explanation:
“Stomach cramps” is a general term that refers to sharp, intermittent contractions or feelings of pain or discomfort that occur anywhere in the abdomen between the lower chest and the pelvis or groin. The abdomen consists of many organs, including the stomach, intestines, liver, gallbladder, pancreas, esophagus, and numerous blood vessels.
Stomach cramps are a common symptom of a wide variety of mild to serious diseases, disorders and conditions that are often related to the abdominal organs and sometimes the pelvic organs, such as the uterus and bladder. Most people will experience stomach cramps at some point during their lifetime, and they can occur in any age group or population. Common causes of stomach cramps include indigestion, gastroenteritis, menstrual cramps, bladder infection, and excessive flatulence (gas).
Stomach cramps may be generalized, which means they occur throughout the abdomen. Stomach cramps may also be localized in a small area of the belly, such as the lower abdomen or pelvis near the groin, or in the upper abdomen where the stomach is located.
Depending on the cause, stomach cramps can last for a few minutes or hours, such as when they occur from indigestion due to eating rich food or from vigorous exercise. Stomach cramps can also last for a few days, such as when they are due to a menstrual period. Long-term stomach cramping may be continuous or occur periodically and may be due to more serious conditions, such as colorectal cancer.
In some cases, stomach cramps may be caused by serious conditions, such as food poisoning or colorectal cancer. Seek prompt medical care if your stomach cramps are unexplained, persistent, or cause you concern.
Stomach cramps may accompany other symptoms, which vary depending on the underlying disease, disorder or condition. If you have other symptoms along with stomach cramps, be sure to inform your health care provider. This information will help your doctor diagnose the reason for your stomach cramps.
( I hope this was helpful ) >;D
¿Qué hormona es la que deja de producirse de forma inmediata en el climaterio?
¿Crees que las mujeres que se encuentran en el climaterio producen la mucosa uterina?
Si ya no hay folículos ováricos, ¿hay cuerpos lúteos? ¿Por qué?
Teniendo en cuenta que el término menopausia hace referencia a la última menstruación, y climaterio, a un proceso que puede durar varios años, ¿crees que ambas palabras son sinónimos? Trata de encontrar al menos una diferencia entre ambos términos.
Durante los años o meses previos a la menopausia, las mujeres siguen teniendo la menstruación, pero de forma irregular. Generalmente, la gente llama a esa etapa menopausia, pero con lo aprendido en esta actividad, ¿crees que ese término es correcto o es mejor utilizar otro? ¿Cuál sería el término correcto?
Answers
Answer:
R:2:SI R:3:SI R:4: PORQUE SI NO !NO.
HELP ASAP! Question: Can Hox genes be transcribed?
Answers
Answer:
os genes Hox son un grupo de genes selectores homeóticos, que a su vez conforman un subconjunto de la familia de genes homeobox y son uno de los conjuntos de genes más implicados en el desarrollo embrionario. Los genes Hox actúan en el control maestro del desarrollo del eje anteroposterior de varios organismos multicelulares, que incluyen gran variedad de taxas animales y a la mayoría de los tunicados y, aunque existen otros genes parecidos en plantas, no se ha demostrado homología. Los factores de transcripción expresados por el conjunto de genes Hox, se encargan de la regulación de la morfogénesis y diferenciación celular durante el desarrollo embrionario temprano y, aunque el patrón de expresión conlleva ajustes complejos conforme el desarrollo va progresando, en cada célula el complejo Hox actúa como un sello o marca de registro permanente de la posición anteroposterior que ocupa la célula en el embrión. De esta forma, las células de cada región o segmento están equipadas con un valor posicional a lo largo del eje anteroposterior del cuerpo
Explanation:
no no se puede
espero que te alla servido la informacion XD
What system of the body works with the muscular system: digestive, endocrine, excretory or immune
Answers
Answer:
Muscles are involved in the digestive system, immune system, and excretory system.
Marshall has a rectangular garden that he wants to enclose with a fence. To calculate the perimeter, he used the expression below, where
w
represents the width and
l
represents the length of the garden.
2
w
+
2
l
Which other expression could Marshall use to calculate the perimeter?
Answers
Answer:
tell marshall to not be cheap and get a contractor
Explanation:
USING THE ORGANELLES NUCELEUS, CHROMOSOMES, AND CELL MEMBRANE ANSWER THE FOLLOWING BELOW PLEASE!!!!!
Answers
Answer:
Jason, i don't have much time because I'm very tired and i have to go to bed but this a good example of homeostasis.
Imagine that the cell is exposed to some kind of stressor such as extremes of temperature, exposure to toxins, or mechanical damage. The chain reactions will be
Disruption or the formation of cell membrane blebsAlteration of protein synthesis and accumulation of altered proteins in the ERAlteration of the chromatin of the chromosomes inside the nucleus and DNA damageAlteration of the permeability of organelles such as mitochondria with consequent alterations in metabolismDecrease in ATP levels and increase in cytoplasmic calcium levelThe combination of all this can lead the cell to death but it can respond in various ways:
the cell can decrease protein synthesis and induce the transcription of specific stress-sensitive chromosomal genes that correct altered proteinsIt can respond to DNA damage by stopping replication and trying to repair it If it cannot survive it can commit suifcide so as not to harm other cellsCan people obtain the resources they need without negatively impacting the environment?
Answers
Answer:
Yes you can, but people that have Power plants etc. damage the environment with things that fill the atmosphere with Co2, but fossil fuels are the way to go, Coal, Oil and 3 more environmental materials, these are supposed to clean out the atmosphere, but keep the environmental surface fine.
Imagine a population of rabbits with fur color that ranges from black to white. If this population were put in an area that has dark rocks that camouflage the black rabbits, as well as light stones that hide the white rabbits, what would most likely happen to the gray rabbits?
Gray rabbits would blend into either environment.
Gray rabbits would adapt to have black fur.
Gray rabbits would be eliminated by predators.
Gray rabbits would mutate their genes.
Answers
Answer:
this is late but it's the third option
Gray rabbits would be eliminated by predators.Explanation:
Gray population rabbits would blend into either environment would most likely happen to the gray rabbits. So, the correct option is A.
What is Population?A population is a collection of organisms belonging to the same species that co-exist in the same place and are able to reproduce. Members of a population interact with each other through mating, competition for resources, and other social behaviors. They also share a common gene pool.
The ratio of the birth rate of a population to its death rate as well as immigration and emigration determine the size of the population. When the birth rate exceeds the death rate, population growth results; When the death rate is high, the population declines. Emigration occurs when people leave a population to go elsewhere, whereas immigration occurs when people move into a population from outside.
So, the correct option is A.
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Which organelles make up animal cells? pls i have an assignment in 1 hr
Answers
Answer:
Organelles in animal cells include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles
Explanation:
Which of the following is not a component of soil? a. organic material b. minerals c. gases d. none of the above
Answers
Answer:
none of the above
Explanation:
all can be found in soil
All of the mentioned like organic material, minerals and gases are components of soil.
What is Soil?Soil is the top most layer or loose surface material that cover the Earth. It consists of inorganic materials, minerals, gases and organic matter. Soil help to give plants the structural support they need and also can be their source of water and nutrients.
Therefore, All of the mentioned like organic material, gases, and minerals are components of soil.
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The three arrows in the diagram each represent a process known as?
(1) mitotic cell division
(2) meiotic cell division
(3) fertilization of gamete cells
(4) differentiation of tissues
Answers
Answer:B
Explanation:
HELP 80 POINTS IF U ANSWER + BRAINLIST!!!
How does your model show what happened to the circled rock material as a result of plate motion?
Answers
Answer:
Once exposed, they are weathered, both physically (by mechanical breaking of the rock) and chemically (by weathering of the minerals), and the weathering products — mostly small rock and mineral fragments — are eroded, transported, and then deposited as sediments. Therefore, the model should show signs of deterioration and subduction.
Explanation:
I'm not sure if this is on a quiz or test, but this is what I would put down. No need to mark me brainliest, thanks anyway! :)
PLEASE HELP ASAP
In patients infected with nonresistant strains of the tuberculosis bacterium, antibiotics can relieve symptoms in a few weeks. However, it takes much longer to halt the infection, and patients may discontinue treatment while bacteria are still present. How could this result in the evolution of drug-resistant pathogens?
The bacteria are still present and may obtain antibiotic resistance to spread to other species by horizontal gene transfer.
Antibiotics have become diluted and weak because of a limited supply.
Bacteria have purposefully directed their immune system to resist the effect of the antibiotic.
Resistant bacteria are polyploidy and can resist the antibiotic, a trait that is passed on to their offspring.
Answers
Answer:
The bacteria are still present and may obtain antibiotic resistance to spread to other species by horizontal gene transfer.
the total energy value of a 100g cereal is 2000KJ. the boy requires 5500 KJ of energy per day. How many grams of cereal does he need to eat in order to obtain this energy(assuming that he does not eat any other foods)?
Answers
Answer:
He need to eat 275 g
Explanation:
2000 = 100
5500 = 2000÷100= 20 = 5500÷20 = 275
He need to eat 275 g
Which defines a cell?
A. microscopic organism I in water
B. protein molecules in animals
C. the basic unit of living things
D. the smallest type of animal
Answers
Answer:
C
Explanation:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. ... Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
cells. the smallest part of a living thing that can carry out the activities needed for life. organism. a living thing. organelle.
Coordinate the immune system response by activating effector cells Memory B and T cells Helper T cells B cells Cytotoxic T cells
Answers
Answer:
Helper T cells
Explanation:
This is because it is a type of adaptive immune system that stimulate B cells, microphages and cytoxic T cells. Helper T cells are used in different adaptive immune responses. They help to activate B cells so as to produce antibodies and also help macrophages to destroy ingested microbes. they also help activate cytotoxic T cells which will inturn kill infected target cells.
Can being exposed to radiation give you special powers?
Answers
Answer:
No.
Explanation:
too much radiation I believe can mutate you and cause cancer
Answer:
what type of radiation? You probably know the answer to that; life ain't a dream.
Explanation:
:(
Drag and drop each mutation to the picture that correctly represents the mutation.
Answers
Answer:
point mutation is left
chromosomal rearrangment is middle
non disjunctional is right
Explanation
GUNGAN_god#7570 on discord helped me out and he is a chemistry teacher,
Each mutation to the picture correctly represents the mutation (left to right) as -
1. point mutation2. chromosome rearrangement3. NondisjunctionPoint mutation
point mutation is a mutation in a single nucleotide.It could be deletion, insertion, or substitution of a nucleotide.The orange fur color allele changed into black, which means a change in nucleotide level.Chromosome rearrangement:
It is characterized by changes in chromosomes like missing or extrachromosomal translocation.in the second diagram, along with orange fur black fur is also present that shows rearrangement of the chromosome.Nondisjunction:
It means unable to separate of homologous chromosome or sister chromatid.In the third diagram, there are two copies of each X chromosome within a cell.Thus, each mutation to the picture correctly represents the mutation (left to right) as -
1. point mutation2. chromosome rearrangement3. NondisjunctionLearn more:
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What is mensuration?
Answers
the measuring of geometric magnitudes, lengths, areas, and volumes.
the act of measuring : measurement.
geometry applied to the computation of lengths, areas, or volumes from given dimensions or angles.
Sorry if this is not what you were looking for
Answer:
the act of measuring : measurement. 2 : geometry applied to the computation of lengths, areas, or volumes from given dimensions or angles.
Explanation:
I HOPE IT'S HELP :)what is a rain shadow area
Answers
Answer:
Rainshadow is the area where rain is not experienced
Answer:
Explanation:
A rain shadow is a patch of land that has been forced to become a desert because mountain ranges blocked all plant-growing, rainy weather. ... On the other side of the mountain—the rain shadow side—all that precipitation is blocked. In a rain shadow, it's warm and dry.
How does making nectar help flowers become pollinated
Answers
La ________ es un proceso de unión de ______, llamados también células ______________. a. Reproducción - organismos - diploides. b. Reproducción - moléculas - somáticas c. Fecundación - individuos - progenitores d. Fecundación - gametos - haploide
Answers
Respuesta:
La fecundación es un proceso de unión de gametos, llamados también células haploides.
La correcta es la D.
Explicación:
El proceso por el cual es posible la reproducción y la continuación de nuestra especie se llama fecundación. La fecundación se produce cuando el gameto masculino, el espermatozoide, toma contacto con el gameto femenino, el ovocito.
Los gametos son células haploides, lo que significa que tienen 23 cromosomas - a diferencia de las células somáticas, que son diploides y tienen dos juegos de 23 cromosomas (46 en total). Esto es importante para que cuando se fusionen ambos gametos, la suma de los cromosomas sea siempre 46.
La manera en la que los gametos obtienen 23 cromosomas en lugar de 46 es gracias al proceso de meiosis.
Cuando se produce la fecundación, la célula resultante será el cigoto que, a lo largo de aproximadamente 40 semanas se desarrollará en el útero de su madre.
Mendel is considered the Father of Genetics. His famous pea plant experiments helped to formulate several laws in genetics that have
stood the test of time with very little modification. Match each law or term with the correct description/definition.
Answers
Answer:
The Principles Of Mendel's Genetics
1.Law of Segregation
2.Law of independent assortment
3.Law of dominance
4.Recessive Allele
5.Co-dominance
6.Incomplete Dominance
Explanation:
The Law of Segregation, often known as Mendel's First Law, stipulates that two alleles for a trait segregate during the production of gametes, resulting in each gamete having just one copy of each allele.
What is an explanation of the concept ?This concept explains why a cross between two animals with dissimilar features, such as flower colour, can occasionally result in an intermediate phenotype in the progeny.
Mendel's Second Law, or the Law of Independent Assortment, states that the inheritance of one feature is not reliant upon the inheritance of another trait. This concept explains why a cross between two animals with dissimilar features can result in offspring that exhibits every feasible combination of the two qualities.
Mendel's research with pea plants was groundbreaking in thea branch of genetics. His thorough research and tests resulted in the development of two laws that are now the cornerstones of genetics. According to the Law of Segregation, two alleles for a trait separate from one another throughout the development of gametes, leaving just one allele per trait in each gamete.
This concept explains why a cross between two animals with dissimilar features, such as flower colour, can occasionally result in an intermediate phenotype in the progeny.
According to the Law of Independent Assortment, one trait's inheritance is not correlated with that of another. This law explains how a cross between two creatures with distinct features can result in offspring that can display any combination of the traits.
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Explain why the small piece of plant tissue is dipped in disinfectant when growing new plants from using cells from a parent plant
Answers
Answer: Disinfectant is a chemical formulation which may include biological components used to reduce the population of a microbe from a living or dead surface.
Explanation:
The plant tissue is treated with a disinfectant before culturing it and growing new plants. This is done to remove dirt, dust, foreign particles like pollen, microbes from the plant tissue surface or from plant part. This help in growth of disease free and contamination free plants. The culture can be utilized for different cycles of plant growth as it remains free from any kind of contamination.
Which of the following characteristics is shared by both primary and secondary consumers?
Uses the Sun’s radiant energy to produce food
The first step in any food chain diagram
Eats only plants to gain needed energy
Gains energy by eating other living things
Answers
The characteristic that is shared by both primary and secondary consumers is that they gain energy by eating other living things. Therefore, option D is correct.
What are consumers in an ecosystem?The primary consumers are the organisms that devour the producers. They are numerous and often modest in size. Herbivorous animals are the primary consumers (vegetarians). The organisms known as secondary consumers are carnivores that consume the primary consumers. Secondary consumers are consumed by tertiary consumers.
Herbivores, carnivores, omnivores, and decomposers are the four different categories of consumers in ecology.
The characteristic that is shared by both primary and secondary consumers is that they gain energy by eating other living things. Therefore, option D is correct.
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In pea plants the trait for tall height is dominant over the trait for dwarf height. Which letter should be used to represent the genotype for plant height?
D
F
L
T
Answers
Answer:
The correct answer is - T.
Explanation:
Normally, the representation of the trait in the genotype of inheritance pattern is the first letter of the dominant character of the particular trait. In this case, the trait of the height of the pea plant is tall and dwarf.
Tall plants are dominant over the dwarf plant, therefore, the letter T would be used to represent the genotype for the height of pea plant, the small letter of the particular letter would be used to represent the alternate allele of the trait.
Answer:
T :) ️^m^
Explanation:
Please help me! It's earth science
Answers
Foliation
Impact metamorphism
Compaction
Burial metamorphism
Answer: In order from top to bottom:
Foliation
Impact metamorphism
Compaction
Burial metamorphism
Explanation:
PLZ HELP I REALLY NEED HELP
Which of the following genotypes for human blood type shows alleles that are codominant?
A. AO (or IAi)
B. AB (or I4IB)
C. BB (or IBIB)
D. AA (or IAIA)
Answers
Answer:
B
Explanation:
The IA and IB alleles are codominant, and the i allele is recessive.
plz help me this is for a grade
Answers
Answer:
Organelle 1
Explanation:
This is the nucleus which stores dna, which would determine blood type.
Organelle 1 is called as the nucleus that stores DNA, which would determine blood type. So, the correct option is A.
What is Nucleus?The membrane-enclosed organelle in a cell that houses the chromosomes is known as the nucleus. The nuclear membrane has a variety of pores that enable the selective passage of specific molecules (such proteins and nucleic acids) inside and outside the nucleus.
The cytoplasm and nucleus's contents are separated by the membrane. The chromosomes of the cell are also included within it. The chromosomes, which contain DNA, supply the genetic data necessary for the synthesis of various cell components as well as for the replication of life.
It regulates the cell's growth and reproduction and holds the genetic information. The genetic makeup of a cell is contained in the nucleus, which has been explained in detail as a membrane-bound structure.
Therefore, the correct option is A.
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