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Answer:

mRNA, tRNA and ribosome

Explanation:

mRNA, tRNA and ribosome are the major players because they perform a very important functions. Messenger RNA (mRNA) is a molecule in cells that carries instructions in the form of codes from the DNA to the sites of protein synthesis which is a ribosomes. Transfer RNA (tRNA) is a type of RNA molecule that helps in decoding a messenger RNA (mRNA) into a protein. Ribosome is an organelle present in the cell that is responsible for the production of proteins according to the instruction given by DNA.

Answer:

Retention of an intron and expanding triplet repeats may provide a new function for a gene, which may cause disease.

Explanation:

Tell me if its correct or wrong

Your Answer is C) species diversity

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Answer:

Hardy-Weinberg equilibrium

Explanation:

The Hardy-Weinberg law is established in it is that in a sufficiently large population, in which the matings occur randomly and that is not subject to mutation, selection or migration, the gene and genotype frequencies remain constant from generation to generation, once a state of equilibrium has been reached that is reached after one generation at autosomal loci. A population is said to be in equilibrium when alleles from polymorphic systems maintain their frequency in the population through generations.

Answer:

the dissolved oxygen of the water decreases.

the fish need the oxygen for respiration, breathing through their gills.

Explanation:

The salinity decreasing doesn't affect the pickerel, because it's a freshwater fish. no salt needed.

more light penetrating the water just means that more aquatic weed or grasses would grow, giving the pickerel more area to spawn their eggs.

temperature increase in the summer has no affect on the fish, since the spawning happens in late winter.

Answer:

The butterfly population would decrease or die out.

Explanation:

If the population of the green butterfly had depended on these "green plants" or leaves, they would die out without them since they use these green plants to camoflauge and blend in with them. Its something they can use to hide away from predators, and be safe from them.

Answer:

beak shape: used to help an animal eat food like tearing apart food or either cracking nuts.

Camouflage: the color or shape of an animals body helps it blend into its envierment.

weebbed feet: help animal's propel themselves through the water with ease. This can help the animal swim faster to

catch prey or escape a predator. Also, if an animal has to swim long distances,

webbed feet can help it save energy so it can swim farther.

Explanation:

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Tobacco smoke contains many chemicals that are harmful to both smokers and nonsmokers.

Acetaldehyde.

Aromatic amines.

Arsenic.

Benzene.

Beryllium (a toxic metal)

1,3–Butadiene (a hazardous gas)

Cadmium (a toxic metal)

Chromium (a metallic element)

Most exact matching problems arise when handeling nucleic acid sequences.

Certain tags can enter the nucleic acid database and identify the trapped gene.

The structure of nucleic acid junctions plays a central role in their biological function.

Answer:

D

Explanation:

Im pretty sure tell me if im right

Homeostasis is a regulating process of the body in response to external environments, digestive system provides glucose for cellular respiration.

Organ systems in our body are regulated with each other and these interactions maintain homeostasis.

The respiratory system interacts with the circulatory system for gaseous exchange and the excretory system depends on the circulatory system for blood filtration, and the nervous system regulates the system through the brain.

Homeostasis is necessary because the external environment can change anytime, and the digestive system maintains food conditions according to the body's needs.

Therefore digestive system maintains homeostasis by providing glucose for cellular respiration.

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Answer: could be Polygenic whish you the best in your test i had to take my test at home while everyone at school does it

Answer:

The answer is true!

After pollination and fertilization following changes occur in a flower: (i) The petals, stamens, style and stigma of the flower fall off. (ii) Sepals dry up and hold the ovary. (iii) The ovules confined in the ovary develop into seeds.

Answer:

half of the offspring's genes come from one parent while the other half comes from the other parent.

Explanation:

Answer:

Explanation:

The troposhere is the lowest layer in the atmosphere and the largest in mass taken about 80% of the mass.

The higher the altitude in the troposphere the lower the atmospheric pressure. At the bottom of troposphere the air is very warm and it gets cool as one moves through the troposphere. The density of the air also decrease with altitude or height above the sea level and this cause the cabins of high-flying jet aircraft to be pressurized.

The atmospheric pressure in the troposphere is lower with higher the altitude (distance from the ground).

The troposphere is the lowest layer of the atmosphere of Earth. This layer contains the 75% of total mass of the atmosphere.

The variation in the temperature and atmospheric pressure in troposphere layer-

Thus, the atmospheric pressure in the troposphere is lower with higher the altitude (distance from the ground).

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Answer:

Positive growth.

Explanation:

The general pattern of population growth in the greater Atlanta area from 1990 to 2000 is positive means there is increase occur in the population. The population of greater Atlanta in 1990 is 2,184,000 while on the other hand, the population of Atlanta is 3,522,000 in the year 2000. So there is 1,338,000 people increase occur in 10 years of duration from the year 1990 to 2000. So we can conclude that the pattern of population is positive and upward.

Answer:

D

Explanation:

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Answer:

Explanation:

Calcination is a process in which ore is heated in the absence of air or air might be supplied in limited quantity. Roasting involves heating of ore lower than its melting point in the presence of air or oxygen. Calcination involves thermal decomposition of carbonate ores.

Evolution is the biological and chemical changes that occur over generations that results in the variation of the observable traits in the organism. According to Charles Darwin evolution happened because of natural selection and many other factors.

Mutations are the ultimate source of genetic variation.

Therefore, option C is correct and is not part of the theory.

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Answer:

gills

Explanation:

They need the gills since they are first born underwater and live part of their life down there. They don't grow tails, legs, or lungs until later on

Ex: tadpoles

Answer:

A. Charlie ran faster than Christina

Explanation:

Charlie:    6 mins per 1

Christina: 12 mins per 1

12 is longer than 6

Answer:

favorable traits are passed from one generation to another

Explanation:

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Answer:

Her hypothesis is right.

Explanation:

The Charli's hypothesis is right because caffeine present in coffee helps in boosting of memory if consume it in a normal range. Recent research indicates that caffeine may enhance long-term memory of an individual. When the memory is boost so the individual has the ability to memorize more knowledge that leads to good performance in the examination so the caffeine present in the coffee helps Charli to give good results in the test and we can say that her hypothesis is right.

Answer:

Birth rate, death rate, and immigration of foreign species

Answer:

Water, ions, glucose, fluids

Explanation:

This is because the nephron have network of cappilaries vessel called glomerulus . This glomerulus filter blood in the kidney to make urine. The hydrostatic force cause the filtrate to be filtered out through pressure.

The nephron also posses tubule which help to return needed or essential substances like protein, ions to the blood and then remove waste products from the blood.

Explanation:

Homologous structures show individual variations on a common anatomical theme. These are seen in organisms that are closely related. 1. Give an example of a homologous structure from this activity: Crocodile

Answer:

Cellulose - It is described as a complex carbohydrate that forms the main constituent of the cell wall in most plants and is important in the manufacture of numerous products like pharmaceuticals, textiles, etc.

Chlorophyll - Any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as cyanobacteria.

Chloroplast - An organelle found in the cells of green plants and in photosynthetic algae, where photosynthesis takes place.  

Bryophyte - Any plant of the division Bryophyta, defined "sensu lato" to comprise the mosses, liverworts, and hornworts, and corresponding to all embryophytes that are not vascular plants.

Pterophyte - It is characterized as any fern(seedless plant) that is a division of Pteridophyta.

Gymnosperm - Any plant such as a conifer whose seeds are not enclosed in an ovary or those who don't bear seeds or fruits. Example; Cycads.

Cone - A cone-shaped flower head of various plants like banksias and proteas.

Angiosperm - Any flowering plant characterized by having ovules enclosed in an ovary and thus, produces fruits, as well as, seeds.

Flower - A reproductive structure in angiosperms and often conspicuously colorful and typically including sepals, petals, and either or both stamens and/or a pistil.

Cuticle - A noncellular protective covering outside the many invertebrates and plants.

Vascular tissue - The complex tissues that consist of various cell types and primarily responsible for transporting liquid and other nutrients throughout the plant or animal body.

Xylem - A vascular tissue in the land plants primarily responsible for the distribution of water and minerals that are taken up by the roots and also the key component of the wood.

Phloem - A vascular tissue in land plants primarily responsible for the distribution of sugars and the nutrients manufactured in the shoot.

Roots - The part of the plant which is generally underground that anchors and supports the plant body. It absorbs and stores water and nutrients, and in some plants is able to perform vegetative propagation.

Root hairs - The rhizoid of a vascular plant or a tabular outgrowth of a trichoblast, hair-forming cell on the epidermis of a plant root.

Stems - The above-ground stalk of a vascular plant that supports individual parts of a plant like leaves, flower, fruits, etc.

Leaves - The green and flat organ that represents the most prominent feature of the most vegetative plants.

Photosynthesis - The process by which plants and other photoautotrophs convert light energy into chemical energy. For example; Plants use air, water, along with sunlight to synthesize their food(carbohydrates and waste oxygen).

Answer:

B

Explanation:

I can't be c or d because it involves the heart. And it can go through the skeleton