The picture below shows two galaxies.
Which of these statements best describes a similarity between the two galaxies?
a)Both have elongated centers.
b)Both have shapes determined by gravitational forces.
c)Both change their shape from time to time.
d)Both are held together by electrostatic force.
Answers
Answer:
I think its B
Explanation:
Because all I know is that galaxies are defined as the system which contains billions of stars bind together by gas or dust and held together by gravitational forces. There are also three types of galaxies which are elliptical, spiral, and irregular shaped and all galaxies have different shapes of centers.
Answer:
Both change their shape from time to time.
Explanation:
Related Questions
Which of the following statements about topographic maps is false?
A. Elevations are found on topographic maps
B. We can use topographical maps through the use of contour lines.
C. Topographic maps show the elevation through the use of contour lines.
D. When contour lines are close together the slope is gentle or flat.
Answers
Answer:
Elevations are found on topographic maps.
Explanation:
Topographic maps use isoline lines to represent elevation. These maps are useful for construction and hiking trails. Hope this helps :)
the typhoons that pass through the philippines travel
Answers
Replication is when DNA is?
O Mutated
O Changed
O Copied
O Destroyed
Answers
9. In pea plants purple flowers are dominant to white flowers.
If two white flowered plants are cross, what percentage of their
offspring will be white flowered?
10. A white flowered plant is crossed with a plant that is
heterozygous for the trait. What percentage of the
offspring will have purple flowers?
11. Two plants, both heterozygous for the gene that controls
flower color are crossed. What percentage of their offspring
will have purple flowers?
What percentage will have white flowers?
Answers
#10 would be 50% purple flowers and 50% white.
#11 would be 75% purple and 25%white.
A white flowered plant is crossed with a plant that is heterozygous for the trait. The percentage of the offspring will have purple flowers is 100%.
What do you mean by heterozygous?The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair.
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
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Weak hydrogen bonds between the nitrogenous base pairs hold the two strands of DNA together. Why are the strands held together by weak hydrogen bonds instead of covalent bonds
Answers
Answer:
Explanation:
Hydrogen bonding is usually occur wen interaction with hydrogen atoms occur.
Hydrogen bonds joins DNA polymers because an hydrogen atom occur on on one base which is called hydrogen bond donors and another oxygen or nitrogen atoms on the base across from it which is called hydrogen bond acceptors.
Adenine “A” a purine and Thymine “T” a pyrimidine each have a donor and one acceptor, whereas Cytosine “C” a pyrimidine has one donor and two acceptors, and Guanine “G” a purine has one acceptor and two donors.
This atoms allows for hydrogen bond between them that gives them structure of DNA molecule.
A nucleotides is hydrogen bonded to T nucleotides while C nucleotides is hydrogen bonded to G nucleotide this is called complementary base pairing.
1 p
Which organelle is paired with its correct function? *
Chloroplast - holds genetic information in the cell
O
Mitochondria - creates energy for use by the cell
Nucleus - allows certain substances to enter the cell, and keeps other substances
out
Ribosome - removes waste from the cell
Answers
Would the distance from the Sun to the next closest star be more or less than
39.4 Astronomical Units? Why or why not?
Answers
Answer: The distance from the sun to the closest star would be less. I dont know why, but their is a star that is close to the sun. The average distance between them is about 23 astronomical units. 23 is of course less then the 39.4. Also the 23 is a little more than the distance between the sun and Uranus.
Explanation: ( This is new information, not old.)
The distance from the Sun to the closest star cannot be less than 39.4 AU because both stars will start attracting each other.
Astronomical Units:An astronomical unit is equal to the distance between the earth and the sun.The nearest star from our sun is Alpha Centauri which is 4.367 light-years away from our sun.If a star is just 34 astronomical units away from our sun, the sun and the closest star will start attracting each other due to the high gravitational force. This event results in the destruction of the solar system.Therefore, the distance from the Sun to the closest star cannot be less than 39.4 AU.
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A grandfather clock needs to have a period of one second. What length of pendulum should be hung for
the clock to keep good time?
Answers
Answer:
Explanation:
hello not sure .but just started learn physics but think so 1 metre (39 inches) long. please mark me brailiest for answer or trying . thx
Can we get colored shadows? Why/why not?
Answers
Answer:
A shadow is an area where direct light from a relatively small source is blocked by some opaque object. If the source is genuinely the only light around, the shadow will be absolutely black, and will have no colour.This is the molecule that supplies the genetic code for the cell.
Answers
DNA is the molecule that supplies the genetic code for the cell
What molecule provides the energy that powers active transport?
A. ATP
B. Glucose
C. Water
Answers
Please help instructions are in the picture (in the grey). I’ll give brainliest
Answers
Answer:
Reproduction is involves sperm and eggs which is Meisois
Growth and repair happens in all the tissues in the body which is Mitosis
Explanation:
Facial dimples and free earlobes are both considered dominant human traits. What are the expected phenotypes of the offspring of a female with dimples and free earlobes (DDFf) and a male with no dimples and attached earlobes (ddff)? Group of answer choices
Answers
Answer: 50% with dimples and free earlobes and 50% with dimples and attached earlobes
Explanation:
Since both the facial dimples and free earlobes are considered to be dominant human traits, this implies that the expected phenotypes of the offspring with regards to the scenario given in the question would be 50% with dimples and free earlobes and also there will be 50% with dimples and a attached earlobes.
50% with dimples and free earlobes and 50% with dimples and attached earlobes.
Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.Since both the facial dimples and free earlobes are considered to be dominant human traits, this implies that the expected phenotypes of the offspring with regards to the scenario given in the question would be 50% with dimples and free earlobes and also there will be 50% with dimples and an attached earlobes.
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Which example is a way that intercellular Communication occurs
Answers
Answer:
A signal is sent from a nerve cell to a muscle cell
Explanation:
I just took this test and this was the correct answer.
Answer: A signal is sent from a nerve cell to a muscle cell
Explanation:
Please helppp
due soon!!
Answers
a person suffering from cold doesn't get proper test why
Answers
How does industrial gases pollute atmosphere explain?
Answers
Industrial gases contains carbon dioxide.
Such as Dust, smoke released from industries caused by air pollution
PLEASE ANSWER!!! TIME LIMITED!!! Which tool would be best for monitoring how land use changes over time?
A. pH meters
B. Satellite images
C. Turbidity charts
D. Bioindicators
Answers
Answer:
B. Satellite
Explanation:
It has the angles for above and it shows how the land changes through time
PLEASE HELP ME OUT!!! IVE BEEN STUCK ON THIS QUESTION FOR AN HOUR.
Answers
Answer:
2, 1, 4, 6, 7, 6, 8, 3
Explanation:
Many weeds that never previously existed in Canada were brought over by early European settlers who started wheat farming in the prairies. This is an example of
Answers
Answer: Introduced species or exotic species
Explanation:
The introduced species is also called as an exotic species. The exotic species is a species which is not native to a particular location or area but is introduced by humans either accidentally or with the desired species. Such species can be invasive means, it can compete with the native species for resources and can reduce the population of native species.
The given situation is an example of introduction of new species. The weeds are introduced exotic species which could have come along with the desired variety of wheat required for farming in the prairies.
which molecule makes up the hereditary material in humans and almost all other organisms
Answers
Answer:
DNA
Explanation:
SCHOOL i learned this
Answer:
deoxyribonucleic acid
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA.
I think, u welcome if right, sorry if wrong ;)
What careers would a student studying biotechnology most likely pursue??
Answers
Answer:
Agricultural research is your answer
Explanation:
Look on Quizlet :)
Entomologists are scientists who Study insects and their life cycles in a systematic manner to
helps us better understand their impact on the world.
TRUE
FALSE
Answers
Who said that all plants are made up of cells.
Answers
Answer:
Theodor Schwann
Explanation:
in 1839
What are some benefits of biotechnology?
Answers
Answer:
It can improve health and reduce hunger simultaneously
It creates flexibility within the food chain
It offers medical advancement opportunities
It allows us to preserve resources
It helps us minimize or eliminate waste products
It can reduce infectious disease rates
Identify the statement below that is NOT a principle of evolution. O Populations evolve, individuals do not O Negative adaptations will become more common in a population O Variations occur naturally within a population Adaptations help individuals compete successfully for survival
Answers
Answer:
Negative adaptations will become more common in a population
Explanation:
that's the one that is NOT a principle
Negative adaptations will become more common in a population is NOT a principle of evolution.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is restricted to a smaller area or can occupy a larger area, making up for the entire species.
when individuals in local populations spread between other local populations called as metapopulation.
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A shoreline's first line of defense against hurricanes is
Answers
Answer:
Mangroves
Explanation:
Ruffled trees that grow on the north Atlantic coast of Florida. Mangroves are rapidly adapting to climate change. When an area becomes hospitable, its seed, which can float away for a long time, soon begins to germinate and take root in it. They represent a unique ecosystem and usually grow in shallows near the coast.
9. Describe step 1 of cellular respiration.
What happens in this step? What is
produced in this step? Where does this
step occur in the cell?
Answers
Aristotle's model of classification was used until the 1600s. Plants were categorized
by the size of their stems and animals by where they lived. What would be a
limitation of using this model?
Answers
Answer:
some organisms fit into more than one category
Explanation:
Its Right
What feature of alcohol fermentation makes it more suitable for the baking process than lactic acid fermentation?
A. Alcohol fermentation generates NAD+ from NADH, but lactic acid fermentation generates NADH from NAD+.
B. Carbon dioxide gas is produced as a by-product of alcohol fermentation but not lactic acid fermentation.
C. Yeasts can use alcohol fermentation, but only human muscle cells can use lactic acid fermentation.
D. The products of alcohol fermentation are edible but those of lactic acid fermentation are not edible.
Answers
Answer:
The correct answer is : B. Carbon dioxide gas is produced as a by-product of alcohol fermentation but not lactic acid fermentation.
Explanation:
In t5he lactic fermentation, the end product is lactic acid whereas in Alcohol fermentation produces by-product carbon dioxide gas which makes it more suitable for baking.
Alcohol fermentation takes place the bread is made as gas is what puts tiny air bubbles within the dough of the bread and makes bread lighter consistency we are used to. Yeast helps in producing carbon dioxide by alcohol fermentation.
Answer:
B. Carbon dioxide gas is produced as a by-product of alcohol fermentation but not lactic acid fermentation.
PLATO//EDMENTUM