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3 years ago

2. Suppose you connect a battery to a small light bulb with a single wire. What do you think will

Biology

2 answers:

Art [367]3 years ago

7 0

Answer:

the lightbulb will turn on

Explanation:

because in the circuit electricity is flowing from the battery through the wire into the lightbulb, giving it enough energy to turn on.

mr Goodwill [35]3 years ago

7 0

Answer:

Battery forces the electrons to moves in the wire.

Explanation:

Battery forces the electrons to moves in the wire. The level of flow of electrons produce the current. The current starts flowing in the circuit. Then, the light bulb glows in this case.

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What's stomach and what job does it do

djverab [1.8K]

The stomach is a muscular hollow organ. It takes in food from the esophagus (gullet or food pipe), mixes it, breaks it down, and then passes it on to the small intestine in small portions. The entire digestive system is made up of one muscular tube extending from the mouth to the anus.
Hope this is of help to you, and happy studying~!
~Isle of flightless Duns

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3 years ago

Read 2 more answers

Scientists use DNA sequencing to understand relationships among life on Earth. The chart illustrates differences between five sp

OlgaM077 [116]

Answer:

With respect to the differences in the DNA sequence of six species, including the human one, it is true that the DNA sequences may vary but the aminoacid sequences are identical.

Explanation:

Options for this question:

The DNA sequences may vary but the amino acid sequences are identical.
The nitrogen bases in the nucleotides must also be different in each.
The process in producing additional DNA, replication, is identical in all six.
The process of producing DNA, or replication, varies due to the differences in the DNA codes.

The different species that exist have specific genomes for each of them, this is the genetic information contained in the DNA varies from one species to another, as can be seen in the scheme (see image). However, the genetic code is universal, and does not vary from one species to another.

The genetic code is found in the RNA molecule and is a sequence of nucleotides that, organized in triplets (codons), are responsible for the synthesis of specific amino acids. An RNA molecule contains the information necessary for protein synthesis.

The scheme shows the differences of five species with respect to the human, based on the respective DNA sequences. But what it does not show is a universally accepted truth, that the nucleotide sequence encoding an amino acid is the same for each of these species.

Learn more:

Genetic code brainly.com/question/15338

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3 years ago

Explain its normal role and why scientists would regard it as the "guardian of the genome."

Burka [1]

The gene p53, also called the guardian of the genome is located on the 17th chromosome in human genomes.
It was given this alternative name because it has a role in response to damage of DNA molecule and in preventing cancer.
The protein product of this gene stops the replication of damaged DNA, activates proteins that repair the DNA damage and if the reparation proteins fail to fix the damage it activates the process of apoptosis or so-called cell death in order to prevent the damaged cell to proliferate and potentially develop into a tumor.

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3 years ago

Cytotoxic t-cell subpopulations are specialized to combat _______ pathogens, whereas helper t-cell subpopulations are specialize

Katarina [22]

Cytotoxic t-cell subpopulations are specialized to combat intracellular pathogens, whereas helper t-cell subpopulations are specialized to combat extracellular pathogens.

Cytotoxic t-cell are CD8+ cells. Cytotoxic t-cell uses granzymes to kill intracellular bacteria, that lives in the cytosol such as viruses. They identify the pathogen forgein peptids that are bounded to MHC-I on the cell surface.

cd4+ T helper (Th) cells include Th1, Th2, and Th17 cells. They contribute to aliergic reactions and fighting extracellular parasites.

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3 years ago

In oxidation,

Romashka [77]

In oxidation, oxygen is needed to create a chemical reaction.

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2 years ago