Answer:
tRNA molecules attach to codons.
Is Earth always the same distance from the
Sun? Explain.
Answer:
No
Explanation:
The earth travels in an ellipse, an ellipse is a flattened circle, and the sun is closer to one end of that ellipse and far in another end. That said the Earth is not the same distance as the sun
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Which characteristics are common to most salamanders? Check all that apply.
They undergo internal fertilization.
They lose their tails as adults.
They have wet, moist skin.
They have long, strong legs.
They begin life with gills.
Answer:
c, d, and a
Explanation:
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Answer:
They undergo internal fertilization; they have wet, moist skin; they begin life with gills
Explanation:
please help 20 points if so.
Answer: A. Codominance is a blending of the two traits, and incomplete dominance expresses both traits equally.
Explanation: Good luck! :D
Answer:
A is correct
Explanation:
What type of evolutionary mechanism did this story show?
Allele frequencies in a population may change due to four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow. Mutations are the ultimate source of new alleles in a gene pool. Two of the most relevant mechanisms of evolutionary change are: Natural Selection and Genetic Drift.
This story showed an example of convergent evolution. Convergent evolution is the process whereby organisms that are not closely related independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.
What is in the story ?In this story, the two species of birds, the crows and the jays, evolved to look similar as a result of living in the same environment and competing for the same resources.
The two species evolved to look similar in order to blend in with their environment, making it difficult for predators to distinguish them from one another. This allowed them to survive and thrive in the same environment.
Therefore, This example of convergent evolution is a perfect example of how species can evolve to look similar in order to survive in the same environment. It also shows how competition for resources can drive species to evolve similar traits in order to survive.
Learn more about convergent evolution at:
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Does the distance from earth to sun determine the seasons? please explain
Answer:
nope
Explanation:
Contrary to popular belief, the seasons are not determined by the earth's distance from the sun. The seasons are actually caused by the earth's tilted axis. Because the axis is tilted, when the Northern Hemisphere is tilted towards the sun, it's warm.
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How could an asteroid impact have led to the extinction of dinosaurs?
Answer:
The asteroid crashed into the earth and made some water bodies violent
it is said that the asteroid was super huge and was capable of causing volcanoes, tsunamis, etc which took place all over the earth and extincted dinosours. But it is a little surprising that crocodiles who were also found at that time survived all this
Answer:
Probably the asteroid caused natural calamities
Plant cells have some organelles that animal cells do not. Check all organelles that ONLY plant cells have.
A
chloroplast
B
nucleus
C
cell membrane
D
cytoplasm
E
cell wall
F
mitochondria
Answer: Plant cells only have chloroplast and a cell wall. Which is A and E.
Which of the following statements are true regarding cellular reproduction? Select all that apply.
When an organism grows, cellular reproduction creates new cells.
Organisms reproduce, so new cells are needed.
If cells become damaged, cellular reproduction can repair damaged cells.
Cellular reproduction helps organisms acquire water better, as there are more cells present.
Cellular reproduction is the exchange of homologous chromosome segments.
Answer: Replacing dead cells
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5. the kingdom of prokaryotic unicellular organisms known for living in
environments in which all other organisms are unable to survive in *
Eubacteria
Archaea
Fungi
prokaryote
Answer:
The answer is in the explanation bellow
Explanation:
Archaea. The Archaea Kingdom is a relatively new prokaryotic kingdom, and its organisms differ from the eubacteria because of the environment in which they live.
Measurement of overall change in position.
Answer:
Velocity (Rate of change of position)Velocity is a vector quantity that is defined as the rate of change of position of an object with respect to a frame of reference with respect to time. Velocity is equivalent to the speed of the object along with the direction of motion.Hope this is fine for youAnswer:Displacement
Explanation:Displacement is the change in position of an object. The SI unit for displacement is the meter. Displacement has direction as well as magnitude. Distance traveled is the total length of the path traveled between two positions.
More than 90% of measles infections occurs in children under ____ years old.
Answer: More than 90% of measles infections occurs in children under 15 years old.
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Many freshwater plants have adapted to low carbon and light levels by adapting what feature?
Group of answer choices
Carnivorous plants
No need for carbon dioxide
Camouflage
Floating leaves
Answer:
The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water. They are therefore a common component of wetlands.
Explain the difference between homology and analogy using a wolf, a whale, and a shark:
Answer:
Explanation:
Analogy refers to traits or structures like body shapes, fins which evolved independently that are similar in organisms that are not related by the same common ancestor. For example dolphins and shark have similar body structures like fins but they are unrelated. Whale and shark too. Whales are mammals, sharks are fish.
Homology refers to traits or structures
posses by organisms that are related by common ancestors. Example wolf and whales.....they are both mammals.
what are the different cellular organelles
Answer:
Plasma membrane, nucleus, ribosomes, mitochondria
Explanation: