Four groups of students plan scientific investigations to answer four questions for the science fair. Which question would most likely be answered with an experimental investigation? 1 2 3 4

Answer:

The water cycle has no starting point. But, we'll begin in the oceans, since that is where most of Earth's water exists. 

Answer:

Together with Venus, they make up the inner, rocky planets of the Solar System.

Explanation:

Answer:

true

Explanation:

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DNA replication results in two identical daughter molecules each consisting of one old (original) strand and one newly-synthesized strand. Therefore, it is true.

The process of duplicating the parent DNA helix into two identical daughter helices is known as DNA replication. One parent strand is passed down to each daughter strand in this semi-conservative procedure.

In prokaryotic cells, DNA replication takes place in the nucleoid area, whereas it happens in the nucleus in eukaryotic cells. Prior to cell division, DNA replication takes place in the S phase of the cell cycle.

Replication fork pairs that form at the origins of replication and then move in opposition to one another carryout genome duplication. When convergent replication forks meet, DNA replication is complete. Hence, it is true.

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Answer:

salivary glands, and digestive systems

Explanation:

For example, enzymes are required for a proper digestive system function. Digestive enzymes are mostly produced in the pancreas, stomach, and small intestine. But even your salivary glands produce digestive enzymes to start breaking down food molecules while you're still chewing.

Based on the identification of T-cell receptor B variable gene segments in genomic DNA an estimation of the size of the human T-cell receptor B variable gene segment repertoire was embarked upon.

PCR amplification from uncloned and cloned genomic DNA sources, Southern blot hybridization, nucleotide sequencing, and cosmid cloning were used to identify  T-cell receptor B variable gene segments in numerous irrelevant individuals. The benefits of this strategy lead to many findings such as there was a possibility of discriminating between alleles at the products of different loci and the same locus, T-cell receptor B variable gene segments c expressed at very low levels in libraries of  Complementary DNA  are detectable. 63 unique T-cell receptor B variable gene segments were sequenced and identified .Out of 63 , 51 contained Thirty-four cosmid clones which were isolated and later filtered for the existence of further  T-cell receptor B variable subfamily members.The results were that human T-cell receptor B variable germline repertoire encodes at least 63 T-cell receptor B variable gene segments out of which 52 are functional.

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True. In mammals, an increase in the temperature of the preoptic area of the hypothalamus activates physiological mechanisms for heat dissipation including vasodilation.

Vasodilation, as it is known in medicine, occurs when blood vessels in your body open up, enabling more blood to flow through them and resulting in a reduction in blood pressure. Without your knowledge, your body goes through a routine procedure like this. It can also be brought on by the foods and beverages you consume as well as the drugs you take. Vasodilation may also be a sign of a particular illness.

The two of the many functions that your blood serves in the body:

Your body's blood arteries are more complex than simple tubes that remain constant in size. Your blood arteries include muscle as well, and that muscle regulates how wide or narrow they are at any particular time. Vasodilation occurs when blood vessels enlarge. Vasoconstriction is the opposite process, which occurs when blood vessels narrow and contract.

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Answer:

2. 2H2O2 -> 2H2O+ O2

Explanation:

This equation is balanced because there are equal amounts of each element on each side. 4 Hydrogen on the left, 4 On the Right. 4 Oxygen on the Left, 4 on the right.

Although 1 is balanced it is not the Chemical equation for hydrogen peroxide (H2O2)

2. is not the equation for Hydrogen Peroxide

4. Balanced although this one does not show oxygen as a gas ( when oxygen is a gas it is O2)

Explanation:

This is because most of the living things even marine animals need heat which is suitable for them, sunlight gets more to the surface which provides heat. It's easy to live if there is low pressure in the ocean so your energy doesn't get wasted.

Answer:

The three lines of defense represent an approach to providing structure around risk management and internal controls within an organization by defining roles and responsibilities in different areas and the relationship between those different areas.

Answer:

The heart consists of four chambers organized into two pumps (right and left) for the purpose of providing blood flow to the systemic and pulmonary circulations. The right atrium receives deoxygenated blood from the entire body except for the lungs via the superior and inferior vena cavae!

The heart has four chambers: two atria and two ventricles.

The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.

The right ventricle pumps the oxygen-poor blood to the lungs.

The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.

The left ventricle pumps the oxygen-rich blood to the body.

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Answer:

DNA: Deoxyribonucleic Acid, Double Helix,  Double Stranded, Deoxyribose Sugar, Thymine, Instructions for making proteins, Located in Nucleus of Eukaryotes, Genetic Information,

RNA: Uracil, Copy the Instructions and Make Proteins, Cytoplasm, Ribosomes, Single Strand, Ribonucleic Acid, Ribose Sugar

Both: Nucleic Acid, 3 Types, Nucleotide is the monomer, 5-Carbon Sugar, Phosphate Group, Pyrimidines, Adenine, Guanine, Cytosine,

Explanation:

DNA or deoxyribonucleic acid, and RNA ribonucleic acid are made up of nucleotides, molecules that are essential to life- DNA stores genetic information, while RNA is important for facilitating the translation of DNA's information to proteins.

Nucleotides are monomers composed of DNA, a nucleic acid that serves as a storage molecule to encode proteins, along with RNA, a ribose sugar-containing nucleotide. In nucleotides, 5-carbon deoxyribose or ribose sugar, phosphate and one of four bases of nitrogen are found:

Adenine (A)

Guanine (G)

Cytosine (C)

Thymine (T).  

Uracil (U) found in RNA

Answer:

u  should s#x more often

Explanation:

Genomic landscape of ductal carcinoma in situ and association with progression breast cancer research and treatment a small fraction of DCIS patients develop subsequent invasive disease.

Cancer is defined as unwanted unusual growth of cell and the division of cell is not according to the pattern which leads to formation of tumor known as cancer.

The non-hodgkin's lymphoma is the cancer of limphatic system and condition occurs when a large number of abnormal lymphosides produces in the body and the lymphosides are a type of white blood cells.

The non-hodgkin's lymphoma is treatable disease and it can be treated by medical professionals. The main symptoms of non-hodgkin's lymphoma are fever, stomach, night sweats, swollen lymphnodes and loss of appetite.

Therefore, Genomic landscape of ductal carcinoma in situ and association with progression breast cancer research and treatment a small fraction of DCIS patients develop subsequent invasive disease.

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Answer:

Explanation:  Guard cells in the plants prevent water loss from it in cases of soil dryness or high temperature by closing themselves. If this does not happen, water will keep leaving the plant by the process of transpiration in these harsh conditions and the plant will not have the important medium for the homeostasis process to continue.

Answer: D.  Thymine is used in replication while uracil is used in transcription.

Explanation:

Genetic information is stored in double-helixes of DNA molecules (Doxyribonuclease). In replication, two daughter strands of DNA are copied from the parent strand, while in replication, instructions stored within DNA are copied into a different form, called mRNA  or messenger RNA.

Nucleotides are monomers comprising DNA, a nucleic acid that along with RNA, a ribose sugar-containing nucleotide, acts as a storage molecule to encode proteins. 5-carbon deoxyribose or ribose sugar, phosphate and one of four nitrogen bases are found in nucleotides:

Adenine (A)

Guanine (G)

Cytosine (C)

Thymine (T).  

Uracil (U) found in RNA

While both contain four nucleotide bases, in RNA, uracil replaces thymine... The DNA nucleotides are involved in replication while RNA nucleotides drive transcription,

Answer:

Sequencing DNA means determining the order of the four chemical building blocks - called "bases" - that make up the DNA molecule. The sequence tells scientists the kind of genetic information that is carried in a particular DNA segment.

Explanation:

Answer:

B. Photosynthesis will happen slower/less

Explanation:

Option B is the possible short-term effect on photosynthesis when the sun's rays are partially blocked.

Photosynthesis is the process whereby plants manufacture their own food with the use of sunlight and carbon dioxide. When this occurs, (energy in form of glucose) and oxygen are produced. The oxygen is released for animals to use.

Photosynthesis makes use of sunlight. But if sunlight is partially blocked, the process by which photosynthesis occurs becomes slow or less. This is because as the sunlight is partially blocked, there is no adequate supply of sunlight to carry out photosynthesis.

Answer:

Eating such things as eggs, animal meat.

Explanation:

It is broken down into amino acids and used to build muscle with the protein.

Answer:

80%

Explanation:

Answer:

false

Two groups of proteins, called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress

Explanation:

Answer:

Air, Atmosphere?

Explanation:

Answer:

The answer is D

Explanation:

The neap tides occur during a phase of the moon called the quarter phases, This is further explained below, Option D is correct.

To find the tides we need to know more about the phases of the moon

The new moon, first quarter, full moon, and last quarter are the four main lunar phases, which occur when the Moon's ecliptic longitude is at an angle to the Sun.

In conclusion, The phase of the moon  neap tides occur is called the quarter

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Answer:

b geographic isolation

Answer:

Carbon source.

Explanation:

The ocean is storing carbon, it is a carbon source.

It's storing the carbon until it's needed in the carbon cycle.

Answer:

% Normal chin (NN) - 25%

% Normal chin (Nn) - 50%

Explanation:

Create a punnett square using Nn and Nn. Since both mom and dad have a dominant trait, but carries that recessive trait, it is considered "Nn".

N n x N n = NN, Nn, Nn, nn

% Normal chin (NN) - 25%

% Normal chin (Nn) - 50%

% Abnormal chin (nn) - 25%