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3 years ago

Helium has an atomic number of 2. Is the model of the helium atom above is

Biology

1 answer:

77julia77 [94]3 years ago

4 0

Answer:

Yes, the model of the helium atom is showing an ion.

Explanation:

Helium, with an atomic number of 2, should have 2 protons and 2 electrons; however, the model only depicts 1 electron. That means the helium must have lost an electron, making it a +1 charge and an ion.

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What are the monomers of proteins?

tensa zangetsu [6.8K]

Answer:

amino acids

Explanation:

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1 year ago

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Joyce is planting tulips in her garden, and she has 5 red bulbs and 5 white bulbs to plant in one row. What is the probability t

Stolb23 [73]

Answer:

$\frac{1}{126}$ or 0.0079.

Explanation:

Joyce is planting tulips in her garden.

Number of red (R) bulbs = 5

Number of white (W) bulbs = 5

Total number of ways to plant 10 bulbs in one row is

$\text{Total ways}=\frac{10!}{5!5!}$

$\text{Total ways}=\frac{10\times 9\times 8\times 7\times 6\times 5!}{5\times 4\times 3\times 2\times 1\times 5!}$

Cancel out common factors.

$\text{Total ways}=252$

It is given that she randomly plants the bulbs so that all 5 red bulbs are next to each other and all 5 white bulbs are next to each other.

Required outcomes are

RRRRRWWWWW and WWWWWRRRRR

$\text{Required outcomes}=2$

Formula for probability:

$Probability=\frac{\text{Required outcomes}}{\text{Total ways}}$

$Probability=\frac{2}{252}$

$Probability=\frac{1}{126}$

$Probability\approx 0.0079$

Therefore the required probability is $\frac{1}{126}$ or 0.0079.

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3 years ago

The formation of memories, the ability to make predictions, the mechanics of language, complex thought and analysis is primarily

Sedbober [7]

Answer:

c. Cerebrum

Explanation:

The cerebrum is the part of the brain that is responsible for processing the sensory information, critical thinking and learning. It stores this information and processing centers make predictions for various conditions. The Wernicke’s area and Broca’s area represent the areas of language present in the cerebral cortex and are associated with language and speech.

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3 years ago

What does reverse transcriptase use to form dna apex?

Marianna [84]

Reverse transcriptase use mRNA to form DNA apex

Reverse transcriptase is a broad family of enzymes that play a unique role in the flow of genetic information. The synthesis of DNA from an RNA template through reverse transcription produces complementary DNA. Reverse transcriptase use an RNA template and a short primer complementary to the 3' end of the RNA to direct the synthesis of the first strand complementary DNA, which can be used directly as a template for the Polymerase Chain Reaction.

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3 years ago

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A phage is a virus that infects bacterial cells. A phage virus is shown above. What component of the phage virus is indicated by

Setler [38]

Answer:

<u>D) the nucleic acid (either DNA or RNA)</u>

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Explanation:

Phages, or bacteriophages are viruses that infect bacteria.They have varying shapes, and sizes, and may contain one of two kinds of nucleic acid; these are RNA and DNA.

The nucleic acids are made up of nucleotides. These are genetic storage biomolecules made up of the monomers ribonucleic acid (RNA) deoxyribonucleic acid (DNA).

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3 years ago