BIOLOGY HIGH SCHOOL

HELP!Which method would be best to separate a mixture of sugar and water?

separation by density
separation by particle size
filtration
distillation

Answers

Answer 1
Answer: The Distillation method would be the answer.
Answer 2
Answer:

distillation.......................................

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What is the primary advantage of multiple researchers obtaining the same result? a) Discoveries are more credible when they are independently verified b) Discoveries are less likely to be forgotten years later c) Discoveries are more likely to be disproved by addition
_____ are masses of cells full of pores.
These two cells have several features in common. They also differ in several ways. The two cells share all but one feature listed below. What is that feature?A) contain DNA B) enclosed in protein capsule C) undergo cellular respiration D) produce proteins in ribosome
Which of the following tissues present in the dicot stem is meristematic in nature? hypodermis collenchyma cambium

Compare and contrast RNA and DNA. (How are they different? How are they similar?)

Answers

Differences between RNA and DNA:

  • Sugar Molecule: RNA contains ribose sugar, while DNA contains deoxyribose sugar.

  • Bases: RNA uses uracil (U) as a base instead of thymine (T), which is found in DNA.

  • Structure: RNA is typically single-stranded, whereas DNA is double-stranded, forming a double helix.

Similarities between RNA and DNA:

  • Nucleotides: Both RNA and DNA are composed of nucleotides, which consist of a phosphate group, a sugar molecule, and a nitrogenous base.

  • Bases: They both use adenine (A), cytosine (C), and guanine (G) as bases.

  • Genetic Information: Both carry genetic information and play essential roles in cellular processes like protein synthesis.

  • Complementary Base Pairing: RNA and DNA use complementary base pairing (A with U in RNA, and A with T in DNA) in various biological processes.

Which of the following is a true statement about codons?A. 

A codon is a sequence of four nitrogenous bases.

 B. 

A codon is a sequence of three amino acids.

 C. 

In translation, an mRNA codon is recognized by its complementary amino acid.

 D. 

In translation, an mRNA codon is recognized by its complementary tRNA.

​

Answers

The statement which has been considered as true statement about codons is in translation, an mRNA codon is recognized by its complementary tRNA. Thus, option D is correct.

The anticodon of the tRNA hydrogen has been binds to the codon of the mRNA by the complementary base pairing.  If the Codon  of the mRNA is - 5' AGCTCA-3'. The anticodon of the tRNA would be - 3' GATCTG-5'

The events that has been occur during the eukaryotic translation elongation are codons in the mRNA are recognized by rRNAs, and tRNAs add the amino acid to the polypeptide chain.

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Answer:

D in translation, an mRNA codon is recognized by its complementary tRNA

Richard's doctor says that he has become obese. What health risks is Richard now facing?Early signs of cardiovascular disease and sleep apnea
Unease getting around and breathing difficulties
Insulin resistance and low blood pressure
Bone thickening and respiratory problems

Answers

The correct option is this: EARLY SIGNS OF CARDIOVASCULAR DISEASE AND SLEEP APNEA.
Obesity refers to a medical condition in which excess body fat has grossly accumulated leading to negative impacts on the health status of the affected individual. An individual is considered to be obese is his body mass index is greater than 30 kg/m^2. Obese people are more prone to other diseases such as cardiovascular disease, diabetes, bone and joint diseases, high blood pressure, sleep apnea, etc.  
If RIchard has become obese, the new health risks Richard is now facing would be the problem of getting around and breathing difficulties or early signs of cardiovascular disease and sleep apnea.

It's hard to say which of the pair is true because both pairs happen in obese people. It's more likely though, that the first pair (getting around and breathing difficulties) is correct.

How does biofuel use differ from solar, wind, and geothermal energy use? a. Biofuels can have a more widespread use. b. Biofuels are less damaging to the environment. c. Biofuels are not a renewable energy source. d. Biofuels cannot be used as an energy source. a. Biofuels can have a more widespread use. b. Biofuels are less damaging to the environment. c. Biofuels are not a renewable energy source. d. Biofuels cannot be used as an energy source.

Answers

The correct answer is option (a) Biofuels can have a more widespread use.

Biofuel is a fuel that is produced from biological process like anaerobic and agriculture digestion. It can be derived directly from plants, agricultural, commercial, domestic and agricultural waste. It has a more widespread use as compared to solar, wind and geothermal energy. Uses of biofuel.

  • It can be used as an alternative diesel
  • It can be used for power generation in backup systems when emission is most important
  • Bioheat can be generated from biofuel
  • It can be used to clean oil spills and grease
  • It can be used as a lubricant
  • It can be used as a fuel in stove for cooking
  • It can be used to remove paint and adhesives
a. Biofuels can have a more widespread use.
i think the answer is "a".

i hope this helps :)

3 examples from finding nemo of organisms that use camouflage as an adaptation to survive

Answers

The Flounder (Mr. Johansen in Finding Nemo), uses coloration technique as camouflage by imitating or blending in the colors and textures of the ocean floors. The Puffer Fish (Bloat). Aside from being able to make itself appear big to drive away the predators, it can also blend in the ocean floors and rocks similar of its color. Regal Tang (Dory) uses camouflage as well. This kind of fish is known for its bright and vivid colors, but when it senses harm, it can make itself somewhat see-through and easily blends with the colors of its surroundings. 

Three adaptations of Nemo fish include:

  • coloration
  • rounded caudal fins
  • high velocity when swimming

What is an adaptation?

Adaptation is a phenotypic and/or physical feature that confers an evolutionary advantage to the individual.

  • An adaptation may confer a different evolutionary fitness according to the environment.

In conclusion, three adaptations of Nemo fish include coloration, rounded caudal fins and high velocity when swimming.

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the walls of the alveoli in the lungs are incredibly thin. Explain how this structure is related to function in the body.

Answers

alveoli in the lungs take the oxygen from air breathed in and transfer them into de oxygenated blood making them oxygenated
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