BIOLOGY HIGH SCHOOL

Which of the following renewable energy sources can be used for electricity, vehicle fuel, and heat?a.wind
b.biomass
c.geothermal
d.water

Answers

Answer 1
Answer: The renewable energy source that can be used for electricity, vehicle fuel, and heat is B. biomass. This is the only option that can be used for all three choices, given that wind, geothermal sources, and water cannot be used as vehicle fuel yet, but biomass can, given that it contains stored energy already.
Answer 2
Answer: b. biomass hope this helps:)

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In this simple food chain, the organism that converts solar energy into usable chemical energy is missing. that would be the?

Answers

Answer: The correct answer is Producers.

Producers occupy the first trophic level in a food chain that begins the process of energy flow in an ecosystem.

They can also be referred as autotrophs as they synthesise their own food using energy from sunlight (photosynthesis).

They convert solar energy into chemical energy (ATP and NADPH) that is finally utilized in the formation of food (carbohydrate).


Example of producers- Green plants and algae.

A producer or something like grass or plants..

Sandstone is a sedimentary rock. Which of the following characteristics would you look for in a piece of sandstone?A. Rock has sparkly or alternating color layers that are bent or folded.
B. Rock has layers and smaller pieces of rock in it. It also has fossil in it.
C. Rock has holes in it, and it has a glassy appearance.
D. Rock contains minerals crystal that have grown together.

Answers

I know this is late but the answer is B

Which is produced when an egg and a sperm unite during a plant’s life cycle?

Answers

Answer:

Zygote

Explanation:

As a result of meiosis in the male and female sex organs of a plant, male and female gametes or male and female sex cells produced respectively. Gametes are universally haploid. Male and female gametes fuse or fertilize to form a diploid zygote. A zygote or fertilised egg is a one-celled structure which later develops into an embryo.

Answer:

it's C. Zygote

Explanation:

I've taking the test/quiz for my biology class on Edge, and that was the correct answer that i got.

In this excerpt from Edgar Allan Poe's "The Raven," what does the biblical reference to the healing “balm in Gilead” signify?"Prophet!" said I, "thing of evil!—prophet still, if bird or devil!—
Whether Tempter sent, or whether tempest tossed thee here ashore,
Desolate, yet all undaunted, on this desert land enchanted—
On this home by Horror haunted—tell me truly, I implore—
Is there—is there balm in Gilead?—tell me—tell me, I implore!"
Quoth the Raven, "Nevermore."

A. the speaker’s desire to cure the raven of its inability to say anything other than “nevermore”
B. the speaker’s desire to cure himself from the pain caused by Lenore’s death
C. the speaker’s desire to bring Lenore back to life
D. the speaker’s desire to cure himself from his mental illness and hallucinations

Answers

Out of the choices given, the biblical reference to the healing "balm in Gilead" signifies the speaker's desire to cure the raven of its inability to say anything other than "nevermore."

b.)the speaker’s desire to cure himself from the pain caused by Lenore’s death

Which of the following do all cells in a multicellular organism have in common?1. They all express the same genes.

2. They all have the same proteins.

3. They all have the same mRNA.

4. They all have the same DNA.

Answers

The correct answer is (d) They all have the same DNA.

  • All the multicellular organisms have same DNA but the different parts of the body has different gene expression.
  • For example: the same DNA is found in the cells of kidney and liver, but the gene expression for liver results in large number of hepatocytes and the same DNA in the kidney will give rise to nephrons.
  • This proves that all the cells in the multicellular organisms have same DNA but their expression of protein in different cells are different.

For the DNA base sequence GGG what is the mRNA codon? What is the tRNA codon that binds to the mRNA codon and what is the correct amino acid that is coded by the base sequence? ...?

Answers

Genetic code is said to be "degenerate" because many codons code for the same amino acid but NEVER will one codon code for more than one amino acid.
1. The DNA base sequence (GGG) is a CCC mRNA. 
2. This mRNA sequence of CCC is known as the codon. It ill correspond to the tRNA anticodon of GGG.
3. This tRNA will be attached to the amino acid, proline.

I hope these answers help.
ccc
ggg
codes for proline 
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