Answer:
The sugar and phosphate group make up the backbone of the DNA double helix, while the bases are located in the middle.
Explanation:
Why are vestigial structures not removed by natural selection?
Please help will mark brainliest and give 12 points
Answer:
anabalic (building up) : photosynthesism builds up molecules
catabolic (breaking apart): cellular respiration, helps cells multiply and stay in good condition (using energy to maintain the cells), complex molecules are broken down, energy is released
Explanation:
Should the international community help build nuclear reactors in developing countries to fuel economic growth and provide cheap energy? Explain why or why not. Whoever answers this can you please elaborate more and if you do this you would receive 20 points thanks!
Answer:
i dont kno
Explanation:
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
a
could not confirm the usefulness of sonar
b
could destroy the hypothesis of continental drift
c
could not provide a mechanism for moving continents
d
could explain how the seafloor was being destroyed
Answer:
Could not obtain evidence for the hot spot hypothesis. Which of course helps scientist know where under water volcanoes might Be. This is helpful in learning more about sea life and the sea floor and what goes on in an ecosystem located under water.
HAHAHA GOTTIE
Explanation:
Katie and her sister have entirely different features and traits. Katie has blonde hair and brown eyes, but her sister has red hair and blue eyes. What causes these variations in traits such as hair color,eye color,and height? A. Competition b. Offspring c.Alleles d. Fitness
Answer:
c.Alleles
Explanation:
Genes are the hereditable units that transmit the information needed to specify traits (such as hair or eyes color), from parents to offspring, generation to generation. Genes are arranged in sequence in the chromosomes. A chromosome might contain hundreds of thousands of genes.
Each chromosome carries specific genes that code for specific proteins that have specific functions in the organisms. Each chromosome carries information to synthesize different proteins needed to accomplish a certain function. But not all chromosomes carry the same gene sequences. Only homologous chromosomes carry information for the same trait, but even this information is not necessarily the same. They might have the same gene but in different alternatives.
Alleles are the different alternatives in which a gene might appear. By the process of natural mutation, a gene might change into two or more alternative forms that are called alleles. These alternative forms codify for the same trait expressing different phenotypes.
In the exposed example, alleles are responsible for the different phenotypes expressed by the girls. The alternative forms of the genes -the alleles- that codify or hair color and for eyes color, express either red or blonde hair, and either blue or brown eyes.
The final genotype and phenotype depend on the gametes that merge to form the zygote, and hence the new organism.
During translation small organelles called __ read the mrna sequence ?
Answer:
thjs may be wrong but I am not sure ribosomes
Fossils are often hardened remains of organisms that once lived, such as a bone or tooth. Which characteristic of sedimentary rock makes
it likely for fossils to be found in this type of rock?
A. An organism's remain become hardened when covered by melted rock.
B. Organisms are changed into rock by high temperature once they are no longer living.
C. The remains of organisms are buried under layers of sand, shells, and bits of rock.
D. The bones of an organism are pulled below Earth's surface during an earthquake.
Answer:
C as most fossils are created in the ocean
Explanation:
If i'm wrong please tell me if i'm right please mark me brainliest
Adaptations that result from natural selection are expected to increase
the fitness of an organism. In terms of natural selection, which of the
following best describes fitness?
A Being able to escape from predators
B Being among the strongest organisms in a population
C Being able to survive, find a mate, and produce offspring
D Being able to survive long enough to reach the adult stage
A prey population consists of individuals with a variety of running speeds. 10 points
Answer:
C
Explanation:
Trust meeeeeeeeeeeeee
define disaster management
How is the process of using fossil fuels to produce electricity similar to and different from using nuclear power to produce electricity?
Answer:
The pressure of the steam turns a generator, which produces electricity. The difference is in how the heat is created. Power plants that run on fossil fuels burn coal, oil or natural gas to generate heat. In a nuclear energy plant, heat is produced from splitting atoms – a process called nuclear fission.
17.) Which of the following statements is FALSE about mutations?
a. They are almost always harmful
b. They can be caused by exposure to radiation
C. Some mutations can be beneficial
d. They change the genetic code by inserting, deleting, or substituting bases
what is fibre and it types
Answer:
Fibre is the indigestible parts of plant foods, such as vegetables, fruits, grains, beans and legumes. It is type of a carbohydrate that helps keep our digestive systems healthy.
A population of birds is blown by a storm to an island off the mainland.
The island has very few trees, and the bird population on the island
develops new nesting behaviors. Mainland birds nest in trees, island birds
nest on the ground. After a long period of time, the island birds are
reunited with the mainland birds, it is observed that the two populations
can no longer interbreed. This is an example of: *
Behavioral isolation
Geographical isolation
Nonrandom mating
All of these
Where is the greatest amount of the world's carbon found?
Answer:
You find the most amount in the ocean because oceans absorb it.
Explanation:
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PLZ ANSWER ASAP I NEED HELP will mark brainliest >_
Peter is complaining of stomach pain and constant hunger. Peter’s doctor diagnoses him with a worm infection. Peter feels hungry because the worm is absorbing food from his intestines.
Peter most likely has an infection from a(n)
tapeworm.
leech.
planarian.
marine worm.
Answer:
A) Tapeworm
Explanation:
got it right on edge nuity
Peter is complaining of stomach pain and constant hunger as he was diagnosed with a worm infection.
Peter feels hungry because the tapeworm is absorbing food from his intestine as tapeworm begins to feed off your body's nutrients to grow once it invades the body.How tapeworm infection occurs?Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae.When tapeworm hatches and attaches itself to your intestine, it starts feeding off body's nutrients causing increase in apatite (hunger increases).It grows by reproducing proglottids ( chain looking body part) and the cycle continues.Planaria upon causing infection feeds on blood cells hence can not cause apatite.Leech and marine worm can not invade the body like tapeworm and planaria.To learn more about tapeworm infections:
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could a woman with O- blood type be the mother of an AB- child? explain your answer.
this process does not require sunlight?
Explain the unique information trace fossils and coprolites can help scientists infer about an organism
They're trace fossils, not animal bodies. This coprolite can reveal an animal's diet. Scientists can determine what animal dropped coprolites based on its shape, size, and location.
What are coprolites?Fossilized feces are known as coprolites. Because coprolites provide information for the animal's behavior rather than its shape, rather than being considered body fossils, they are instead categorized as trace fossils.
A coprolite can provide researchers with information about an animal's nutrition. Scientists are able to determine the species of animal that may have been responsible for the droppings by analyzing the shape and size of the coprolites as well as the location where they were discovered.
Because coprolites have a propensity to deteriorate so quickly, we only find them very infrequently. They are the marine species that are found the most frequently. The presence of coprolites in fish and reptiles is very common.
Learn more about coprolites, here:
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an
Which of the following is the amplitude
of this wave?
B. B
A. A
C. C С
D. D
What event is considered the beginning of the Reformation?
A. Luther translating the Bible into German
B. The posting of the 95 Theses
C. The sale of indulgences
D. Luther's belief in salvation by faith alone
Answer:
The posting of the 95 Theses
What question led scientists to separate plants and fungi into two distinct kingdoms?
A. Does the organism have cells?
B. Does the organism reproduce?
C. Does the organism grow on the ground?
D. Does the organism use sunlight to make food?
Answer:
A
Explanation:
yes because each plant have a cell if they don't they might die.
Please define the terms, don’t copy and paste. I’m giving 15 points for it
PLEASE HELP
Explain the difference between Positive and
Negative Tropism
Answer:
Tropism can be called positive or negative. Positive tropism is movement or growth towards a stimulus, whereas negative tropism is the movement or growth away from a stimulus.
Explanation:
Positive Tropism is growing towards a stimulus.
Negative Tropism is growing away from a stimulus.
4. The solar energy that is absorbed and reradiated from Earth's surface as heat is mostly
(with a longer wavelength).
O gamma radiation
O ultraviolet radiation
O infrared radiation
What scientist discovered the process of transformation?
Answer: Fred Griffith
Explanation: :)
What is the source of most salt in the ocean?
A.fish
B.human activity
C. Wind
D. Rocks on land
Answer:
D. rocks on land
Explanation:
Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
Answer:
Option D Rocks on land
Explanation:
Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
Where does cellular respiration occur within the cell?
O A. Extracellular space, cytoplasm,
inside mitochondria.
B. Cytoplasm, mitochondrial
matrix, inner mitochondrial
membrane.
C. Cytoplasm, inner mitochondrial
membrane, mitochondrial
matrix.
Answer:
B. Cytoplasm, mitochondrial
matrix, inner mitochondrial
membrane.
Explanation:
The aerobic respiration is made up of different processes:
a) Glicolysis, which takes plays in the cytosol of the cell
b) Oxidative decarboxylation of pyruvate and Krebs circle which occurs in the mitochondrial matrix
c) Oxidative phosphorylation which occurs in the mitochondrial cristae
Limiting factors that affect large, dense populations more than small, scattered
populations are called 
_______
Answer:
Density dependant limiting factor
Explanation:
a student models moon phase she holds a foam ball on a stick in front of her body and stands in front of the light as shown. the student uses herself to represents earth. she turns her body slowly to phases.
Answer:
D- Diagram 4
the full moon is represented in diagram four.
Describe gastrulation. Why are the three layers important in development?
Explanation:
Cells in each germ layer differentiate into tissues and embryonic organs The ectoderm gives rise to the nervous system and the epidermis, among other tissues