BIOLOGY HIGH SCHOOL

A heart murmur is caused by a defect in a(n) _____.A. ventricle
B. artery wall
C. heart valve
D. atrium

Answers

Answer 1
Answer: A heart murmur is caused by a defect in the heart valve, C. A heart murmur is a sound that can be heard through a stethoscope. It is not a structural problem with the heart but a physical finding. These murmurs occurs when there is turbulent blood flow in the heart. Most common cause of heart murmurs are due to the abnormal functioning of the valve of the heart. these valves may have stenosis or regurgitation.
Answer 2
Answer:

Answer:

The answer is C Heart Valve

Explanation:

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A _____ is the smallest particle of a substance that has all the properties of the substance.

Answers

An atom is the smallest particle of a substance that has all the properties of the substance.

What is an Atom?

Every atom is composed of a nucleus and one or more electrons which are bound to the nucleus. The nucleus is made of one or more protons and a number of neutrons as well. Only the most common variety of hydrogen has no neutrons in it.

The electrons of an atom are attracted to the protons in an atomic nucleus through the electromagnetic force. The protons and neutrons in the nucleus are attracted to each other with the help of nuclear force. This force is usually stronger than the electromagnetic force which repels the positively charged protons from one another in the nucleus. Under certain circumstances, the repelling electromagnetic force between protons become stronger than the nuclear force. In this case, the nucleus splits and leaves behind different elements. This is a type of nuclear decay.

Learn more about Atom here:

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If the substance is an element the answer is an atom. If the substance is a compound then the answer is a molecule.

Unlike weather, climate

Answers

Climate is best described as C. THE LONG-TERM AVERAGE OF WEATHER VARIATIONS IN A SPECIFIC AREA.

The long term average being 30 years. These weather variations are affected by the temperature, precipitation, and wind.

Climate determinants include latitude, altitude, proximity to mountains and oceans, proportion of land to water, thermohaline circulation of the ocean, ocean currents, density and type of vegetation present in an area, as well as the areas' water retention and rainfall.

Climate are classified into three groups. These are Bergeron and Spatial Synoptic, Koppen, and Thornthwaite.

Bad ozone is created from air reacting with _____ in the presence of sunlight.acid rain and smog
sulfur oxides and nitrogen oxides
nitrogen oxides and hydrocarbons
acid rain and hydrocarbons

Answers

nitrogen oxide and hydrocarbons

How is the reproductive system different from other body systems?

Answers

Most body systems are necessary to keep an individual alive.

Unlike other body systems, the reproductive system is not essential to keep an individual alive.

Answer:

Most body systems are necessary to keep an individual alive.

Unlike other body systems, the reproductive system is not essential to keep an individual alive.

Explanation:

edg. I got it right

In which organ does the majority of photosynthesis take place?

Answers

leaf is the organ where photosynthesis takes place
caz leafs function is photosynthesis
chloroplasts. inside plant cells in small things.

A codon is made up ofA. a two-nucleotide sequence.
B. a three-nucleotide sequence.
C. a four-nucleotide sequence.
D. a five-nucleotide sequence.

Answers

A three nucleotide sequence. On mRNA, once it enters the ribosomes codons, ie AGU (adenine, guanine and uracil) is a codon, and is then paired with an anticodon of complementary bases which create a link of amino acids to create a protein.
The first path is fromthe nucleus. DNA from the nucleus, assigns specific job for the organelles tofollow through mRNA. The mRNA goes out from the nucleus and enters thecytoplasm where ribosomes will attach to the mRNA. The ribosome-mRNAcombination binds to the endoplasmic reticulum and signals the tRNA to translatethe message from DNA. The rRNA contains codons that will be used for the translationof the messages by the tRNA. These codons has a three – nucleotide sequence. Avesicle that contains the enzyme grows out from the endoplasmc reticulum anstransport the enzyme to the Golgi body for further processing. The answer isletter B.
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