Uranus was originally thought to be the star Sagittarius A*.
True
False

Answer:

No. A law is something that happens without fail every time when being tested, or when it happens in nature. A law does not attempt to explain why the thing occurs, it only states it. A scientific theory is not something that can be tested on and will receive the exact same outcome each time. A theory attempts to explain an action seen in nature. Theories can be subject to change if new scientific data and research comes out, whereas laws cannot.

T cells are a part of the immune system that focuses on specific foreign particles. Rather than generically attack any antigens, T cells circulate until they encounter their specific antigen. As such, T cells play a critical part in immunity to foreign substances.

His business failing was the reason why he was convinced that he was right to chop down the tree.

This is defined as the process in which a substance such as a tree is cut down through the use of tools.

Once-ler business failed and he felt chopping down the Truffula trees will result in him having money through the sales of the resources.

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The energy required for organisms to respond to the environment comes from the sun.

Light energy, which also comes from the Sun, is essential for photosynthesis, a process in which green vegetables transform carbon dioxide and water into glucose, lipids, proteins, vitamins, nucleic acids, releasing oxygen into the atmosphere.

The sun is the basis of life, because if we analyze the food chain, its base comes from the photosynthetic beings that provide food for this chain to occur.

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Answer:

Put one drop on the dimple tile, and the rest in a test tube. Then put the teat pipette back in the water outside the Visking tubing. Test the drops of liquid in the dimple tile by adding one drop of iodine solution from the dropper bottle. If they turn blue-black, the liquid contains starch.

Explanation: i hope this helped :)

Answer:

1. Genotype 2. Phenotype

Explanation:

Surface runoff is increased by deforestation. Details about surface runoff can be found below.

Surface runoff is the overland flow of excess water (with or without accumulated contaminants) that cannot be absorbed by the ground as infiltration.

Surface runoff has adverse effects on the soil and crops.

Deforestation exposes the bare soil, hence, is likely to cause surface runoff.

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Answer:

rodents and small horses

Answer:

C

Explanation:

Active transport requires energy, while passive energy does not.

In aqueous solutions, the charged hydrophilic heads of phospholipids are attracted to the water phase, and the nonpolar hydrophobic tails are repelled.

Phospholipids may be defined as ad amphipathic molecule that consists of fatty acids, a phosphate group, and an alcohol attached to the phosphate.

The hydrophilic heads of the phospholipids are water-loving which consists of the phosphate group while the hydrophobic tails of the phospholipids are water-hating that comprises of fatty acids.

Therefore, in aqueous solutions, the charged hydrophilic heads of phospholipids are attracted to the water phase, and the nonpolar hydrophobic tails are repelled.

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Answer:

Carbon.

Explanation:

Carbon forms the basis for all life on Earth; indeed, life forms on Earth are referred to as carbon-based life forms, emphasizing the importance of this element for life. Carbon atoms readily bond to other atomic elements, such as oxygen and nitrogen.

Nucleotides from the DNA template strand complement the mRNA's codons. These codons code for amino acids. Option B is correct. CAA - CTA - TCG

Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.

Several nucleotides joint by their extremes compose the nucleic acids.

Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information neccesary to carry out cellular functions.

Codons are short sequences of three nucleotides that carry genetic information needed to build the protein. These units determine which amino acids are added to the growing chain during the assembly.

More than one codon might code for the same amino acid.

Different sequences of three nucleotides -codons- might code for a different amino acid. This means that the resulting proteins will not be the same, and they will accomplish different functions.

When DNA molecule unwinds to be transcripted, two single strands get separated,

It receives that name because it is the sequence that codes for each amino acid composing the proteins.

When referring to the coding strand, we are talking about the sequence that turns out to be the same as the mRNA that results from the transcription of the same DNI segment -switching bases T for U-.

This is the one that is used during transcription to synthesize mRNA. The template strand is the one that is going to be complemented by the mRNA.

To get to know the sequence of nucleotides in the template strand that code for the polypeptide sequence val-asp-ser, firts we need to know which codons code for these amino acids.

1)

Amino acid            Codon

Val                          GUU, GUC, GUA, GUG

Asp                         GAU, GAC

Ser                          UCU, UCC, UCA, UCG, AGU, AGC

These are all the possible codons in mRNA that might code for these amino acids. Now, we need to identify their complementary bases on the template strand.

2)

mRNA        Template strand

GUU                  CAA

GUC                  CAG

GUA                   CAT

GUG                  CAC    

GAU                   CTA

GAC                   CTG    

UCU                   AGA

UCC                   AGG

UCA                   AGT

UCG                   AGC

AGU                   TCA

AGC                   TCG  

The column of the right shows all the possible nucleotides that might complement the mRNA codons. There are several combinations. Now, we need to choose among the options the correct combination.

3)

Options A and  D  ⇒  guu-gau-agc and caa-cua-ucg

These are not the correct options since they carry uracils instead of thymines. Remember that DNA molecules have thymine, and RNA molecules have uracil.

Option C ⇒ gtt-gat-agc

This is not correct since these sequences do not complement the mRNA codons.

Option B ⇒ caa-cta-tcg

This is correct. You can find these nucleotide sequences among the options written before for the template strand.

Option B) CAA - CTA - TCG is the correct one.

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Answer: CAA - CTA - TCG is the correct one.

Explanation:

Answer:

see the file attached!!

Answer:

Don't know your answer choices, though if one of them is "Community Level" that is the correct one.

Explanation:

Found on other websites, and just completed a quiz with the same answer.

Answer:

Explanation:

1. Production of sperm by meiosis

2. diploid generation which alternates with haploid (in plants)

Answer:

Fats with at least one double bond between carbon atoms are unsaturated fats. When some of these bonds are in the cis configuration, the resulting bend in the carbon backbone of the chain means that triglyceride molecules cannot pack tightly, so they remain liquid (oil) at room temperature.

If we have the recessive genotypic frequency, we can calculate the phenotypic frequencies in a population in Hardy-Weinberg equilibrium. The percentage is 82%.

The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies remain the same through generations in a population that is in equilibrium.  

The allelic frequencies in a locus are represented as p and q. Assuming a diallelic gene,

Allelic frequencies

Genotypic frequencies after one generation are

• p² ⇒ H0m0zyg0us dominant genotypic frequency,

• 2pq ⇒ Heter0zyg0us genotypic frequency,

• q² ⇒ H0m0zyg0us recessive genotypic frequency.

The addition of the allelic frequencies equals 1

p + q = 1.

The sum of genotypic frequencies equals 1

p² + 2pq + q² = 1

Available data:

18% of individuals express the recessive trait of Syndactyly

Let us say that the dominant allele is A and the recessive allele is a.

Assuming this gene expresses complete dominance,

Their frequency in the population is p² + 2pq.

Their frequency in the population is q².

Individuals that express Syndactyly have webbed finger and their genotype is h0m0zyg0us recessive, aa. Their frequency in the population is q².

q² = 18% = 0.18

We can get the frequency of individuals with normal fingers by clearing the following equation,

p² + 2pq + q² = 1

p² + 2pq + 0.18 = 1

p² + 2pq = 1 - 0.18

p² + 2pq = 0.82

The frequency of individuals with normal fingers is p² + 2pq = 0.82 = 82%.

The percentage of the population are not Webbed is 82%.

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Answer:

D.A substance that is produced during a chemical reaction

Yes, it is possible because making a paper fold takes far less time than making a thermal or plastic item. The gravitational force is the reason behind this.

Polystyrene, a complicated substance, is used to make thermocol. When heated to over 100°C, it changes to a liquid condition and then returns to a solid state when cooled.

A gravitational force is defined as which draws particles or bodies together.

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The categories can be ordered as life, Eukarya, Animalia, Chordata, Mammalia, Primates, Hominid, Homo, sapiens.

Classification is the ordering of organisms based on the similarities in their characteristics.

In case of humans the categories includes:

Thus, this is the categories humans belong to starting with life and ending with species name.

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Answer:

true

Explanation:

Answer:

by age 18 weeks of pregnancy, fetus begins hearing, and by 24 weeks, ear begins developing.

Explanation:

Answer:  

The right answer to that is

a. phloem

b. xylem

Explanation:

In this vascular tissue, the vascular bundle is a ring, with the larger xylem cells in the center and the smaller phloem cells to the outside.

I had a hard time knowing the answers for this question, but I finally understand.

So, hope you believe, cause I read this in my school books.

Have a good day!!!

The person who answered on top had the write answers, but not on the right letters.

The vascular tissues identify as:

a. phloem

b. xylem

Vascular tissues in plants are specialised tissues which transport nutrients and water through the plant. They are made up of two distinct kinds of tissues: xylem and phloem.

Xylem is in charge of carrying water and minerals that are dissolved from the plant's roots to its leaves. It is made up of many cell types, such as tracheids, vessel components, and fibres. Tracheids and vessel elements are long, hollow structures that create lengthy tubes when stacked end to end.

Sugars and other organic compounds are transported from the leaves to the remainder of the plant by phloem. There are two sorts of cells in it: sieve tube elements and cell companions. Sieve tube components are long, narrow cells that run end to end.

Therefore, the vascular tissues identify as:

a. phloem

b. xylem

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Answer:

Molecules with bigger charge or size can not pass through every membrane but other molecules can.

1. bigger size

2. bigger charge

3. electronegativity

Explanation:

Hope this helps you!

Answer:

Sistemas orgánicos

Explanation:

Aunque cada órgano del cuerpo realiza sus funciones específicas, los órganos también funcionan juntos por grupos, a los que se denomina sistemas orgánicos (ver Principales sistemas orgánicos). Los médicos clasifican las enfermedades y sus propias especialidades médicas de acuerdo a los diferentes sistemas orgánicos.

Answer:

Nucleus

Explanation:

There are many answers but some are :

Nucleus , Cell membrane , mitochondria , ribosomes

Hope this helped and have a good day

All cells contain cytoplasm, which is made up of cytosol, a jelly-like substance. The cytosol holds the internal structures in suspension.

In addition to the nucleus, eukaryotic cells also have other organelles. An organelle is a cytoplasmic structure that serves a specialized purpose for the cell.

For instance, organelles called vacuoles store materials in the cell, whereas organelles called mitochondria supply energy.

The space between the plasma membrane and the nuclear envelope is known as the cytoplasm in eukaryotic cells, which have a nucleus.

The term “cytoplasm” refers to the entire inside the plasma membrane in prokaryotes, which are without a nucleus.

Therefore, Some cells additionally have a nucleus, cell membrane, mitochondria, and ribosomes in addition to their cytoplasm.

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Based on the graph the region expected to have the least population growth will be Australia.

Looking at the given graph the population size of each region starts at a lower point and ends at a higher point on the graph between the years 1950 and 2050.

The change in the population also varies depending on the scale on the y-axis. Australia has the lowest scale which lies between somewhere above 10 and 50.

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Answer:

False

Explanation:

CO2 enters a plant through the stomata. Tiny pores on the surface of the leaves