If a star is 7.5 light years (ly) away how long would it take the light from that star to reach Earth

Answers

Answer 1

it would take 7.5 years.

Explanation:

light years are a measurement to determine how long it would take for something the speed of light to reach its destination


Related Questions

4. in the diagram below strand 1 and 2 to represent the two complementary strand a portion of a DNA double helix. The sequence of strand 1 is indicated below what is the sequence of strand 2?
a.AGCA
b.CTAC
c.TCGT
d.GATG

Answers

Answer: d

Remember you always have to have the opposite letter (Chargaff’s rule). A=T G=C vice versa T=A C=G.
I hope this helps, I’m sorry if it’s a but confusing:)

Please help ASAP!!!! 15 points

Answers

Answer:

2= cytoplasm

1= cell membrane

3= DNA

Explanation:

That all i know

The organism shown is___
and it is a____
OA. single-celled; plant
ОВ.
multi-celled; plant
OC.
single-celled; bacteria
OD.
multi-celled; fungi

Answers

Answer: B

Explanation:

All vascular plants are multicellular.

4 The finger-like structure in the wall
of the small intestine through which
food is absorbed into the blood-
stream is called
A duodenum.
B bile duct
C villus.
D pancreas.
E ileum.​

Answers

Answer:

...................C

[tex]{ \blue{ \tt{option \: (c)}}} \: { \green{ \boxed{ \red{ \sf{ \underline{villus}}}}}}[/tex]

Explanation:-

Villus, plurally called villi, in anatomy any of the small, slender, vascular projections that increase the surface area of a membrane. Important villous membranes include the placenta and the mucous-membrane coating of the small intestine.

Which contains MORE organisms? *
A. Genus
B. Species
C. Phylum

Answers

Answer:

Species is the Answer

Thank you friend

the answer is b , species

What is competition? Give example

Answers

Answer:

Competition is a relationship between organisms that strive for the same resources in the same place. ... Intraspecific competition occurs between members of the same species. For example, two male birds of the same species might compete for mates in the same area.

Hope it helps!!!

Which of the following statements is likely to also be true of the TRAPPIST-1 planets based the characteristics of the terrestrial planets in our solar system?

Answers

Answer:

The star we today call TRAPPIST-1 was first discovered in 1999 by ... Telescope and ground-based telescopes discovered that the system ... Three of these planets are in the theoretical "habitable zone," the area around a star where rocky planets are most likely to hold liquid water. The TRAPPIST-1 system hosts seven Earth-sized, temperate exoplanets orbiting an ultra-cool dwarf star. As such, it represents a remarkable setting to study the formation and evolution of terrestrial planets that formed in the same protoplanetary disk

Explanation:

What is a Cladogram?

Answers

Answer:

a branching diagram showing the cladistic relationship between a number of species

what is the amino acid sequence of the complementary mRNA strand of the DNA strand

Answers

Answer:The codon is the three nucleotide sequence in the mRNA that indicates which amino acid should be incorporated in the growing polypeptide chain. The anticodon is the complementary three nucleotide sequence in the appropriate tRNA. b. Template strand is the DNA strand off which the mRNA is synthesized

Explanation: The codon is the three nucleotide sequence in the mRNA that indicates which amino acid should be incorporated in the growing polypeptide chain. The anticodon is the complementary three nucleotide sequence in the appropriate tRNA. b. Template strand is the DNA strand off which the mRNA is synthesize

Anna is creating a model to show atoms  of solid bromine and gases bro mine how should her three models differ.

Answers

Answer:

The size of the atoms should vary depending on the state. The mass of the atoms should vary depending on the state.

Explanation:

If a ⊥ b and b ∥ c, then _____




a ∥ b.


a ∥ c.


a ⊥ c.


b ⊥ c​.

THE ANSWER IS NOT A//C

Answers

Answer:

a is perpendicular to c will be the answer.

how does adrenal glands overcome the low surrounding temperature at high altitude?​

Answers

Answer:

The major secretions of the adrenal cortex (Box 4.2) are cortisol (the main ... for steroid synthesis is captured by receptors which bind low-density lipoproteins (LDL) ... It is essential to do this slowly and progressively to avoid precipitating acute

Explanation:

Suppose if all the bones of the skull (facial bones) are fused together, which function would you not be able to carry out?

Answers

Answer:

to masticate food

Explanation:

In adults, all the bones of the skull, except one, are fused together by immovable joints referred to as sutures. The sutures are fibrous joints which hold the bones of the skull together to form a rigid and strong structure that protects the brain. Skull bones fuse around two-years (18 to 24 months after birth). The only skull bone that is not fused by sutures in adults is the mandible, which is used to masticate food.

If the population of beetles in model 1 mated naturally would your prediction for the offspring in Question 4 still be valid? Explain.

Answers

Complete question:

Model 1 – Controlled (Selective) Mating: (Imagen in the attached files, PNG)

4. If each mating pair has one offspring, predict how many of the first generation offspring will  have the following genotypes.

BB Bb bb

7. If the population of beetles in Model 1 mated naturally would your prediction for the offspring  in Question 4 still be valid? Explain.

Answer:

7) If the population of beetles in model 1 mated naturally, the prediction for the offspring in Question 4 would not be valid. The number of individuals with each genotype in the F1 would change because there would be other possible types of crosses:  Bb x bb, Bb x Bb, bb x bb

Explanation:

Due to technical problems, you will find the complete explanation in the attached files (PDF)

Identify the structure in the picture labeled as D in the picture above. (Level 1)

Answers

Answer:

which picture. ??? no pic no help sorry

In the female human reproductive system, eggs are created in an ovary, and implanted in the uterus. For the embryo to grow, it must receive nutrients and oxygen. This problem is solved through an organ called the A. Amniotic sac B. Placenta C. Uterus D. Umbilical cord

Answers

Answer:

The correct answer is D. Umbilical cord

Explanation:

The umbilical cord connects the fetus to the placenta and through it exchanges nutritional substances as well as oxygen-rich blood. The umbilical cord is maintained throughout gestation until the moment of birth, when it is cut and leaves a permanent scar, the navel. The umbilical cord is responsible for breathing and feeding the fetus until the moment it is born, so any failure or blockage in the circulation of oxygen and nutrients through the cord can lead to injury or even death of the embryo. It also serves to remove waste and carbon dioxide (CO2).

URGENTT

A) Cell #1 has a cell wall, and Cell #2 is eukaryotic
B) Cell #1 has membrane-bound organelles, Cell #2 has no membrane organelles
C) The nucleus is not present in Cell #2 and Cell #1’s DNA is enclosed by a membrane
D) Cell #2 is prokaryotic. Cell #1 is eukaryotic

Answers

Answer:

A) Cell #1 has a cell wall, and Cell #2 is eukaryotic

Which of the following amendments might you choose to improve the overall quality of the soil in the following scenario?
The soil in a garden is loamy, with a high organic content. On testing, the soil is sour, with a low pH of 4. You wish to grow lilacs, which prefer a more alkaline soil.


potassium

calcium carbonate

compost

nitrogen

Answers

Answer:

compost

Explanation:

Made up of protein and DNA, _____ contain genetic information within a eukaryotic cell.

Answers

I believe that the answer is chromosomes. Hope this helps :)

HELPPPPPPPPPPPPP!!!

Answers

Answer:

i think the answer is the one you clicked on, the first answer.

Explanation:

I don’t understand how we can see the sky and clouds and when your outer space you don’t see the sky or clouds you only see the ocean and the land?

Answers

I’m like so confused with this question very sorry don’t get it

Y red ballonls and m green ballons were divided evenly amoung three kids. How many ballons did each kid get

Answers

Answer:

Each kids will get Y red balloons + M green ballons ÷ 3.

Explanation:

This is because Y red balloons and green red balloons are the total number of balloons present.

The total number of ballons are Y red+M green ballons.

The total number of kids are 3.

Therefore each kids with get the addition of the ballons divided by 3.

Therefore, Y red ballons + M green ballons ÷ 3.

explain what happens during old feild succession​

Answers

Answer:

If undisturbed, an open field over time will be invaded by shrubs, which in turn will be replaced by saplings, young trees, and eventually a mature forest. Foresters often refer to these phases as the grass and forbs stage, shrub and sapling stage, pole stage, and mature forest.

Explanation:

<3

If undisturbed, an open field over time will be invaded by shrubs, which in turn will be replaced by saplings, young trees, and eventually a mature forest. Foresters often refer to these phases as the grass and forbs stage, shrub and sapling stage, pole stage, and mature forest.

A cell's mRNA loses all of its uracil. What will happen next?

Answers

If a cell's mRNA loses all of its uracils, then it will not undergo a protein synthesis or translation process.

as defected mRNA will not be able to form all anticodon thus there is no codon formation takes place for protein synthesis.

What are codon and anticodon?

Codon: A codon is a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid.

Anticodon: An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence.

Hence, If a cell's mRNA loses all of its uracils, then it will not undergo a protein synthesis or translation process.

To learn more about codon and anticodon click here:

https://brainly.com/question/19884283

Are we running out of clean water? And why, explain. ​

Answers

Answer:

well were not running out but not every place has clean water and no we never run out of clean water. theres always clean water

Explanation:

Answer: hm, our planet won't run out of water. fresh water isn't always avaliable when humans need it. half of the freshwater can be found only in 6 countries. more than one million humans live without clean water.

Explanation:

The evolution of the peppered moth over the last two hundred years has been studied in detail. Originally, the vast majority of peppered moths had light colouration, which effectively camouflaged them against the light-coloured trees and lichens upon which they rested. However, due to widespread pollution during the Industrial Revolution in England, many of the lichens died out, and the trees which peppered moths rested on became blackened by soot, causing most of the light- coloured moths to die off due to predation. At the same time, the dark-coloured moths flourished because of their ability to hide on the darkened trees. Since then, with improved environmental standards, light-colored peppered moths have again become common, but the dramatic change in the peppered moth's population has remained a subject of much interest and study Which type of selection is illustrated by the peppered moth's during the Industrial Revolution?

Answers

Answer:

Directional selection

Explanation:

The phenotype of individuals and the environment where they live, interact and determines the genes´ destiny in space and time. The result of this interaction and the gene destiny is Natural Selection. Natural selection selects beneficial alleles and increases their frequency in the population.

Among the different types of natural selection, we can find "directional selection".    

Directional selection increases in the proportion of individuals with an extreme phenotypic trait, in this case, dark moths color. This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example, the moth population must be adapted to its environment. The coloration is related to survival strategies. In the beginning, they expressed light coloration useful to camouflage and to avoid predators while resting on their lighted-substrate (lichens and light-colored trees). After the severe environmental impact of the Industrial Revolution, the environment changed. This change acted as a selective pressure. Lichens died, and trees became darker. Light moths were exposed and died after predation. Probably at one point of the evolution, the gene for color mutated, and dark-colored moths appeared. By natural selection, the mutation got fixed. This example reflects directional selection because the population turned from light color to dark color.

In the attached files you will find two graphs expressing directional selection.

A fruit fly somatic cell contains 8 chromosomes. How many chromosomes will each fruit fly gamete contain?

Answers

Answer:

The somatic cells of fruit flies contain eight chromosomes, which means they have two sets of four chromosomes. Meiosis is the process by which sex cells are produced. Sex cells are haploid, which means they have one set of chromosomes.

Explanation:

Fruit flies have two sets of four chromosomes because their somatic cells have eight chromosomes. The process through which sex cells are created is called meiosis. The haploid nature of sexual cells means that they only have one set of chromosomes.

What is Meiosis?

In sexually reproducing organisms, meiosis is a unique type of cell division of spermatids that results in the production of gametes, such as sperm or egg cells. Two rounds of division are necessary, and the end product is four cells with just one duplicate of each chromosome.

When the chromosome count in daughter cells is decreased to half that of the parent cell during meiosis, the process is known as reduction division. For instance, while a human cell has 46 chromosomes, the egg and sperm cells created by meiotic division only have 23. In the above given example, fruit flies have two sets of four chromosomes as their somatic cells have eight chromosomes.

Thus, fruit flies have two sets of four chromosomes because their somatic cells have eight chromosomes.

Learn more about Meiosis, here:

https://brainly.com/question/10621150

#SPJ3

Genes determine the______ of organisms.

Answers

traits of organisms. hope this helped.

Help it’s super confusing

Answers

Slowly. The others don’t make sense

Answer:

Slowly

Explanation:

Is a pencil a biotic or abiotic matter?

Answers

A pencil is abiotic matter
Abiotic because a pencil is a non-living thing
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