1. a) Name a set of homologous structures.

b) Two species have homologous structures. What do these homologous structures show about the evolutionary relationship between the two species?

Answers

Answer 1
the forearms of vertebrae

homologous structures mean that the two species have a common ancestor

Related Questions

¿Como se llama ?

1.- Embrión se desarrolla dentro del sistema reproductor femenino.
2.- Formación de un organismo a partir de huevos

Answers

Answer:

1. Vivíparo

2. Ooviparismo

Explanation:

Viviparismo se define como el proceso de desarrollo de un animal en el cual el embrión crece dentro dentro del sistema reproductor femenino en una estructura acorde que le permite obtener alimento y oxígeno hasta su nacimiento. El viviparismo placentario es el tipo de desarrollo más extendido entre mamíferos (por ejemplo, perros, caballos, gatos, conejos, etc), a excepción de mamíferos que son ovíparos (por ejemplo, el ornitorrinco) y los mamíferos marsupiales que no poseen placenta y donde feto se desarrolla en una bolsa externa llamada marsupio (por ejemplo, los canguros). Por otra parte, el oviparismo es un mecanismo de desarrollo en el cual el embrión crece dentro de un huevo desde el momento que la hembra lo expulsa hacia el exterior. Cuando se produce este suceso, los embriones se encuentran muy poco desarrollados y por lo tanto deben cumplir su ciclo de crecimiento (hasta eclosionar del huevo) fuera del vientre materno. Algunos ejemplos de animales ovíparos incluyen anfibios, reptiles, aves, insectos, etc.

Which of the following correctly describes a way in which Earth’s atmosphere interacts with the geosphere?

Answers

Answer:

It provides a medium for cycles that provide nutrients to living organisms.

¿Cuál de los siguientes niveles es el sucesor del nivel tejido?
A.
Órgano.
B.
Sistema.
C.
Organismo.
D.
Célula.

Answers

answer: D
bcuz i said so and this

C. Órgano

Porque Célula→Tejido→Órgano→Sistema→Organismo

What are the reactants in the following chemical reaction?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
A. Carbon dioxide (CO2) and water (H2O)
B. Carbon dioxide (CO2) and oxygen gas (O2)
C. Glucose (C6H12O6) and oxygen gas (O2)
D. Glucose (C6H12O6) and water (H2O)

Answers

Answer:

its (A)

Explanation:

These reactions, which are described in detail in the chapter Cells and Energy, break down the simple sugar glucose (C6H12O6). The process uses oxygen and glucose and results in carbon dioxide (CO2), water (H2O), and usable energy. Oxygen and glucose are the reactants.

Hope it helps you.... I tried my best.

pls mark me as branliest really need it pls pls pls.

What renal and hormonal factors will cause an increased release of aldosterone from adrenal cortex?

Answers

Answer:

Renin; angiotensin I and angiotensin II

Explanation:

Renin is a key hormone involved in the renin-angiotensin-aldosterone system (RAAS), which is responsible for regulating blood pressure in response to changes in blood volume. Renin is secreted primarily by the kidneys to promote the production of the peptide hormone angiotensin in the blood vessels. Subsequently, angiotensin stimulates the release of aldosterone from the adrenal cortex, stimulating sodium retention by the kidneys. Renin acts on its substrate angiotensinogen to yield angiotensin I, which is then converted to angiotensin II by the angiotensin-converting enzyme (ACE). Finally, angiotensin 2 promotes the release of aldosterone by the adrenal cortex, which acts on renal tubules, leading to the reabsorption of sodium and water and the excretion of potassium.

A moleclue of mRNA with the sequence GGUCAUCACAU experienced a point mutation that caused the sequence to become GGUUAUACAUAU. which of the following terms describes this type of mutation?

Answers

Answer:

it's called a genetic mutation

How does the natural process of meiosis support evolution?
A. Each daughter cell mutates its own DNA during Reduction Division to produce more variation.
B. Each daughter cell is unique, providing natural variation.
C. Each daughter cell is identical, providing natural variation.
D. It does not support evolution.

Answers

A. Each daughter cell mutates it’s own DNA during reduction division to produce more variation

During meiosis, each daughter cell tends to undergo mutation of its own DNA and leads to more variation. The correct option is A.

What is meiosis?

Meiosis is a sort of cell division that occurs in organisms which reproduce the fusion of gametes and results in a diminution in the number of chromosomes in gametes. Body cells in humans are diploid, with two sets of chromosomes.

Meiosis is a process of cell division that produces 4 gamete cells while reducing the number of chromosomes in the parent cell by half.

This process is essential for the generation of egg and sperm cells for reproduction.

Meiosis reduces the number of chromosomes in a cell by half while also generating new allele pairings that are dispersed across daughter cells via segregation and recombination.

This genetic reshuffling, which is thought to be the basis of reproduction success, reduces genetic affiliations within and between loci.

Thus, the correct option is A.

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The actual pair of alleles present in the cells of an individual is known as the:
genotype.
karyotype.
phenotype.
archetype.

Answers

it’s known as the genotype, a pair of alleles represent the GENOTYPE of a specific gene. alleles contribute to the individual’s outside appearance which is the phenotype. (so that isn’t the answer)

magine that a scientist takes a group of Anolis lizards and introduces them into an enclosure at a research facility in continental South America. He notes that the lizards thrive in this new environment. The fact that Anolis lizards could survive in habitats outside of the Caribbean is a reflection of their ____ niche; their _____ niche is determined by their ability to disperse to other areas as well as predation and resource availability.

Answers

Answer: Fundamental, realized

Explanation:

The realized niche of a species is usually the result of predation, competition, and other types of interaction between species.

The size of realized niche is determined by interspecific competition .The fundamental niche is larger than the realized niche.

The fundamental niche represents all the habitats where a species could possibly live, but competition among different species usually restricts a species to a smaller area, which is the realized niche

During which phase of mitosis do the chromatids line up in the center of the cell?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

Answers

Answer:

B) Metaphase

Explanation:

Have a nice day xd ♡

The Metaphase (B)

Look at the attached photo for further reference.

Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.

la unica fuente de los aminoacidos esenciales son los alimentos y su anotemcion requiere de un gran gasto emergetico.si uma persona no consume estos aminoacidos se vera afectado el paso​

Answers

Answer:

Los aminoácidos son compuestos orgánicos que se combinan para formar proteínas. Los aminoácidos y las proteínas son los pilares fundamentales de la vida.

Cuando las proteínas se digieren o se descomponen, los aminoácidos se acaban. El cuerpo humano utiliza aminoácidos para producir proteínas con el fin de ayudar al cuerpo a:

Descomponer los alimentos

Crecer

Reparar tejidos corporales

Llevar a cabo muchas otras funciones corporales

El cuerpo también puede usar los aminoácidos como una fuente de energía.

PLS HELP -
Drag the tiles to the correct boxes to complete the pairs.
Match the pollution control method to its description

Answers

Answer:

Incineration: Solid pollutants are burned...    

Settling: Polluted water is aloud to stand still...

Composting: Microbes are used to convert...

Gas adsorption: Pollutants are captured through contact with hard...

Explanation:

Amazing nowone else got to your question. Your welcome.

If your body temperature gets too low, why is it dangerous?
A. Enzymes become denatured.
B. Uncontrollable shivering can be deadly.
C. Reactions become too slow for cells to survive.
D. It is not dangerous.

Answers

Answer:

Enzymes become denatured.

In case of very low body temperature, the body reactions will become slow and lead to death. The correct option is C.

What is hypothermia?

When your body temperature falls, your heart, nervous system, and other organs are unable to function normally.

If left untreated, hypothermia can result in the complete failure of your heart and respiratory system, as well as death.

Thus, the correct option is C.

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all plants carry on photosynthesis true or false

Answers

Answer:

true

Explanation:

i think

This is false since light energy is needed for photosynthesis to take place.

During production of a drug, all work area surfaces must be disinfected using sterilized disinfectants. Which of the following statements about disinfectants are true? Select all that apply. View Available Hint(s)for Part A Disinfectants destroy all microbes present on a surface. Disinfection can be used to treat work surfaces as well as workers (i.e., washing hands). Disinfection can occur by physical or chemical means. Disinfectants are used to inhibit or destroy pathogens. Endospores and viruses can resist disinfectant treatment.

Answers

Answer: The correct options are

--> Disinfectants are used to inhibit or destroy pathogens,

--> Disinfection can occur by physical or chemical means,

--> Endospores and viruses can resist disinfectant treatment.

Explanation:

To prevent infectious diseases from spreading or to sterilise work area surfaces during the production of drugs, chemicals known as disinfectants as used. These are chemicals that kill or inhibit the growth of pathogens. Other chemicals such as antiseptics can also kill and prevent the growth of mainly pathogenic microorganisms. However, disinfectants are stronger chemicals than antiseptics and so are often used on non-living things and surfaces.

Disinfection does not necessarily kill all microorganisms, especially resistant bacterial spores (endospores) and viruses, so it is less effective than sterilisation.

There are generally two methods of disinfection:

--> The chemical method: A typical example of a chemical disinfectant is the carbolic acid. It is used for disinfecting lavatories and floors.

--> The physical method: here, physical agents are use to disrupt and damage the pathogenic organisms on work surfaces. Some typical example include: UV irradiation, heat, sunlight exposure, sonic or hydrodynamic pressure and radiation.


Help please ASAP, easy question


A species slowly loses numbers and goes
through natural selection until no individuals
are left. This describes what type of
extinction?
A evolved extinction
B. background extinction
C. mass extinction
D. endangered extinction

Answers

Answer:

evolved extinction

please mark me as brainliest

Question 13(Multiple Choice Worth 5 points) (04.01 LC) Based on the way living things are organized, what level combines to form tissues?
A.Cells
B. Molecules
C.Organs
D. Organ systems​

Answers

Answer:

A

Explanation:

Because a cell is the smallest unit of life

What compound is a hydrocarbon?

Answers

Answer:

A hydrocarbon is an organic chemical compound composed exclusively of hydrogen and carbon atoms.

PLEASE HELP PLEASE!!!! DOES ANYONE SOMEONE NAMED HIROJABAMI!?!?!? PLEASE HELP!!!!.....

Answers

Answer:

well I dnt know

btw thanks for ur points I really needed that.

how is erythrocytes an advantage in exchanging and carrying ​

Answers

Answer:

Shape of Red Blood Cells Erythrocytes are biconcave discs with very shallow centers. This shape optimizes the ratio of surface area to volume, facilitating gas exchange. It also enables them to fold up as they move through narrow blood vessels.

5.Can you write which kind of food items are not digested easily when gall bladder of a person is removed surgically? Why?​

Answers

Answer:

hi

Explanation:

no answer please try let us

Answer:

hard or solid ofood items are not digested easily when gall bladder of a person is removed surgically.it is because gall bladder is responsible to make a food in a small particle.

what is photosynthesis
and precipitating??​

Answers

Answer:

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 metabolic activitie

In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzling, rain, sleet, snow, ice pellets, graupel and hail.

Explanation:

I hope this answers is helpful to you

How will the concentration of H+ and OH- ions change when a substance with a pH of 3.2 is added to water?

Both H+ and OH- will increase
Both H+ and OH- will decrease
H+ will increase and OH- will decrease
H+ will decrease and OH- will increase

Answers

Answer:

H+ will decrease and OH- will increase

What is produced in abundance by pioneer species?

a) plants

b) cones

c) seeds

d) wet habitats

Answers

Answer:

A (plants)

Explanation:

Pioneer species usually create plant litter and break them down as leaf mold after a while which would make new soil for secondary succession and nutrients for small fish an aquatic plants < most of that came from Gogle because if it came from my head it would've been hard to understand lol

The answer would be A) plants

anyone help me please​

Answers

Answer:

The human body is controlled by a network of living wires called the nervous system.

Which of the following particles has a negative charge?
A. Electron
B. Nucleus
C. Proton
D. Neutron

Answers

The answer is D I hope I helped

A cell membrane is bigger a specific about what allows across how does this help the cell

Answers

Answer: It helps the cell absorb as many different molecules as possible.

Explanation: the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

What factor is described as sexual
selection?
A, non-random mating
B. migration
C. small populations
D. natural selection

Answers

Answer:

The correct answer is - D. natural selection.

Explanation:

Sexual selection takes place due to competition between individuals of the intraspecies same-sex and of mate choice which driving the evolution of reproductive traits.

Sexual selection is a mode of natural selection as it leads to the evolution of specific traits. Other examples or options are not related to sexual selection directly and are not affected by sexual selection.

........ provides genetic continuity from generation to generation.
a) sexual reproduction
b) fusion of gametes
c) asexual reproduction
d) meiosis ​

Answers

Answer:

d) meiosis

Explanation:

The process of meiosis preserves genetic continuity for future offspring by ensuring that two sexually reproducing organisms produce offspring that have the same number of chromosomes as the parents.

It ensures that the offspring will be able to mate with other organisms of the same species.

Fruit trees in a forest are an important habitat for a bird species and were historically a major source of food for a rodent species. Over time, the rodent species shifted their feeding behavior from fruit trees to nut trees. As rodent behavior changed, the density of fruit trees decreased, which caused significant decreases to the bird population. What kind of effect did the change in rodents exert on bird population size?

Answers

Answer:

The bird population might have to migrate in search for food or may decline in numbers.

Explanation:

This is a concept of primary producers that is trees and secondary consumers that is mouse and bids. Due to the decline in raw material available the mouse population declines and this also affects the secondary consumers that are birds of prey like hawks, owls etc.
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Which lifestyle choice may contribute to the development of noncommunicable diseases?taking the stairseating fast foodexercising regularlyeating fruits and vegetables Twice a number decreased by 39 is five times the sum of thenumber and 2 times the number. Find the number. what is full form of UNIVAC a quien les toca contestar la pregunta how environmental factors affect the variation and distribution of expressed traits in a population An adult can lose or gain two pounds of water ina course of a day. Assume that the changes in water weight isuniformly distributed between minus two and plus two pounds in aday. What is the standard deviation of your weight over a day? C mt s in tr ging nhau R0 = 3. Cn t nht bao nhiu in tr c mton mch c in tr Rt = 8 quien me puede ayudar con eso es para hoyyyy urgente ayuda Many freeways have service (or logo) signs that give information on attractions, camping, lodging, food, and gas services prior to off-ramps. These signs typically do not provide information on distances. An article reported that in one investigation, six sites along interstate highways where service signs are posted were selected. For each site, crash data was obtained for a three-year period before distance information was added to the service signs and for a one-year period afterward. The number of crashes per year before and after the sign changes were as follows.Before 13 22 65 123 56 63After 14 21 43 84 75 721. The article included the statement "A paired t-test was performed to determine whether there was any change in the mean number of crashes before and after the addition of distance information on the signs." Carry out such a test. (Note: The relevant normal probability plot shows a substantial linear pattern.)a. State and test the appropriate hypotheses. (Use = 0.05.)b. Calculate the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.)t = _____p-value = _____c. State the conclusion in the problem context.A. Fail to reject H0. The data does not suggest a significant mean difference in the average number of accidents after information was added to road signs.B. Reject H0. The data suggests a significant mean difference in the average number of accidents after information was added to road signs.C. Fail to reject H0. The data suggests a significant mean difference in the average number of accidents after information was added to road signs.D. Reject H0. The data does not suggest a significant mean difference in the average number of accidents after information was added to road signs.2. If a seventh site were to be randomly selected among locations bearing service signs, between what values would you predict the difference in the number of crashes to lie? (Use a 95% prediction interval. Round your answers to two decimal places.) 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A load of 25 kg is applied to the lower end and of a steal wire of length 25 m and thickness 3.0mm .The other end of wire is suspeded from a rigid support calculate strain and stress produced in the wire Please helpQuadrilateral ABCD is a parallelogram. Let E be a point on AB, and let F$\ be the intersection of lines DE and BC The area of triangle EBF is 1, and the area of triangle EAD is 9. Find the area of parallelogram ABCD. What new labour-saving devices were introduced in the agricultural revolution? You move down 5 units and up 5 units. You end at (1,3). Where did you start? Balance the following skeleton reaction and identify the oxidizing and reducing agents: Include the states of all reactants and products in your balanced equation. You do not need to include the states with the identities of the oxidizing and reducing agents. NO_2(g) rightarrow NO_3^-(aq) +NO_2^- (aq) [basic] The oxidizing agent is:______. The reducing agent is:_______. A block with a mass of 0.26 kg is attached to a horizontal spring. The block is pulled back from its equilibrium position until the spring exerts a force of 1.2 N on the block. When the block is released, it oscillates with a frequency of 1.4 Hz. How far was the block pulled back before being released?