The DNA double helix is antiparallel. This means that the two strands
A. are parallel and are identical to each other.
B. cross over each other many times.
C. are parallel and run in opposite directions.
D. are parallel and are the mirror images of each other.
C. are parallel and run in opposite directions.
Explanation – Deoxyribonucleic acid (DNA) is double stranded molecule present inside the nucleus of the cell and has double helical symmetry. The two strands run or proceeds antiparallel to each other which means that one strand proceeds from 5' to 3' direction while the other strand proceeds from 3' to 5' direction.
It so happens because the nitrogenous base from one strand binds to its complimentary base pair of the other strand. Hydrogen bond is the bond that connects nitrogenous bases of two strands.
Answer:
C
Explanation:
Approximately what percentage of Earth’s water is fresh water? a. 97 percent b. 71 percent c. 30 percent d. 3 percent
Answer:
d. 3%
Explanation:
Answer:
d
Explanation:
the right answer comrades
why is it impossible for exponential growth to continue forever?
Answer: If the population of certain organism starts to grow exponentially, will reach a point in which there are to many organisms, and the food is limited, so the organisms start to compete with each other for food. So the population "regulates" itself, which makes the exponential growth impossible to continue forever.
What can be classified as
macronutrients,micronutrients,and water
Final answer:
Macronutrients include carbohydrates, proteins, lipids, and water, which the body needs in relatively large amounts. Micronutrients include vitamins and minerals that the body needs in smaller amounts.
Explanation:
Macronutrients are nutrients that the body needs in relatively large amounts. They include carbohydrates, proteins, lipids, and water. Carbohydrates are the body's main source of energy and can be found in foods such as bread, rice, and potatoes. Proteins are essential for growth and repair of tissues and can be found in foods like meat, fish, and beans. Lipids, also known as fats, provide energy and insulation and can be found in foods like butter, oil, and nuts. Water is essential for many bodily functions and can be obtained from beverages and foods with high water content.
Micronutrients are nutrients that the body needs in smaller amounts. They include vitamins and minerals. Vitamins are organic compounds that help regulate various physiological functions in the body. They can be obtained from a variety of foods such as fruits, vegetables, and dairy products. Minerals are inorganic substances that are necessary for proper bodily functions. They can be found in foods like meat, dairy products, and leafy greens.
which statement best explains why some cells in the reproductive system only respond to certain hormones
Answer:
These cells have specific types of receptors on their membranes.
What do we call a molecule that has a ratio of two hydrogen atoms for every one atom of carbon and oxygen?
A. Carbohydrate
B. Lipid
C. Nucleic Acid
D. Glucose
Answer:
Lipid
Explanation:
organic compound that contains a larger number of carbon and hydrogen atoms than oxygen atoms.
Final answer:
A molecule with a 2:1 ratio of hydrogen to carbon and oxygen atoms is called a A. carbohydrate or saccharide.
Explanation:
A molecule that has a ratio of two hydrogen atoms for every one atom of carbon and oxygen is called a carbohydrate. This empirical formula can be represented as (CH₂O)n, where n is the number of carbons in the molecule, indicating the proportion of 1:2:1 for carbon, hydrogen, and oxygen respectively.
Carbohydrates are also known as saccharides and are classified into three subtypes which are commonly monosaccharides, disaccharides, and polysaccharides. The term carbohydrate is derived from 'carbo', referring to carbon and 'hydrate', indicating the presence of components of water.
Question 7 (5 points)
Each row in the periodic table ends with a_____
metal
nonmetal
metalloid
noble gas
Hello There!
Each row in the periodic table ends with a "Noble Gas"
Noble gasses have a family of six elements. These elements all have the same chemical properties. These elements are all colorless and odorless.
- Your license can be cancelled for failing to complete a required school.
A. True
B. False
Answer:
I believe it's true but I'm not entirely sure.
Answer: True
Explanation:
The driver's license can be cancelled for the following negligence and circumstances:
1. If the driver gives false information or identity.
2. If the driver fails to give the complete the driver school he/she will not receive a valid driving licence.
3. If the licence consists of errors.
On the basis of the above description, the given statement is true.
Some protists, called _______, can use sunlight to produce their own food but can also switch to consuming food from their environment.
A. chemotrophs
B. heterotrophs
C. autotrophs
D. mixotrophs
Some protists, called mixotrophs can use sunlight to produce their own food but can also switch to consuming food from their environment.
What is a protist?Protists are eukaryotic, microscopic organisms that may be unicellular or multicellular.
In terms of feeding, some protists are autotrophic while some are heterotrophic.
The difference between them is that the autotrophic protists produce their own food through the process of photosynthesis, while the heterotrophic protists cannot photosynthesize but they obtain their food by ingesting other organisms or decaying organic matter.
Thus, option "D" is correct.
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Which statement correctly describes glucose (C6H12O6)?
Answer: What you have is correct!
Explanation: Nah, honestly I just looked at google, but that is correct tho.
C6H12O6 is a chemical formula. It is a specific type of chemical formula that people often call a molecular formula. A molecular formula communicates the atomic composition of a molecule. Thus, by writing C6H12O6, we are referring to a molecule composed of six carbon, twelve hydrogen, and six oxygen atoms.
Answer:
D: It is a compound made of twenty-four total atoms. Explanation:
What is it called when two forms of a trait are both dominant at the same
time?
A. Alleles.
B. Incomplete dominance.
c. Recessive.
D. Codominance.
Answer:
codominance
Explanation:
Answer:
D Codominance..it's correct I just did it:)
Please help with as much as you can. Thank you. I will give brainlest.
Horizontal gene transfer can occur through several mechanisms. Why is this relevant to humans?
A. Bacteria can divide quickly using binary fission.
B. Bacteria can exchange genes for resistance to antibiotics in this way.
C. Viruses can infect bacteria, inserting their genetic material into the bacterial DNA.
D. Bacteria are never beneficial to humans.
All animals are
A. autotrophs.
B. heterotrophs.
C. polytrophs.
D. biotrophs.
Species can vary in several ways. Which of the following is one of Darwin's ideas that was accepted by most scientists of his time due to the large number of fossils being discovered at that time?
A. Species vary around the world.
B. Species have specific adaptations to their local environment.
C. Species that live in seawater can also live on mountains.
D. Species change over long periods of time.
Dinoflagellates can perform photosynthesis and provide energy for themselves and for the coral that they live near. The coral provide protection to the dinoflagellates. This is an example of a
A. parasitic relationship.
B. commensalistic relationship.
C. mutualistic relationship.
D. dependent relationship.
Dinoflagellates can perform photosynthesis and provide energy for themselves and for the coral that they live near. The coral provide protection to the dinoflagellates. This is an example of a
A. parasitic relationship.
B. commensalistic relationship.
C. mutualistic relationship.
D. dependent relationship.
The idea that viruses originated as genetic material that was able to move within a genome, eventually exiting a cell and entering another is the _______ hypothesis.
A. coevolution
B. regressive
C. recessive
D. progressive
The wings of insects, birds, and bats evolved independently but carry out similar functions. This is an example of
A. analogous structures.
B. embryonic structures.
C. vestigial structures.
D. homologous structures.
Answer:
79
Explanation:79
if you explain9
Answer:
1. B
2.B
3.B
4.C
5.C
6.C
7.A
Explanation:
B. Bacteria can exchange genes for resistance to antibiotics in this way. Bacteria can take up genetic material from other bacteria or the environment during a process called transformation. This is relevant to humans because we can modify bacterial ADN with a gene of our choice and due to this transformation process, other bacteria can take up this modified ADN. B. All animals are heterotrophs. This means we can not produce food for ourselves inside our bodies. Instead, we have to consume it from another source in nature, for example, animal meat, fruits or vegetables.B. Species have specific adaptations to their local environment. In Darwin's finches for example, he found out that very similar birds had different peaks and head shape. He wanted to find out why they were so different yet so similar. He found out that depending on the food source available on the environment, the birds had a particular shape of peaks and head so they can feed properly.This adaptations and changes allow the birds to survive in a particular local environment.C. Mutualistic relationship. A mutualistic relationship is a biological interaction in which both organisms benefit. In this particular case, the Dinoflagellates provides energy to the coral and the coral protects the dinoflagellates against predators. This question is the same as the 4th one.C. recessive. The recessive hypothesis exposes that viruses were intracellular parasites that lost the required genes for replication and maintenance. So, they depend on host cells and their replication genes and processes to live.A. Analogous structure. An analogous structure is a trait that has a similar role, but whose origin is different. In this particular case, the insects, birds, and bats have different origins and ancestors but they all evolve wings to fly.most of the carbon on Earth is stored in the form of
Answer:
Gas
Explanation:
Carbon is stored as carbon dioxide gas in our atmosphere. It is in a repetitive cycle called the carbon cycle in which carbon travels from the atmosphere to humans, then back to the atmosphere.
Which of the following practices that are needed to run a nuclear power plant has a negative impact on both air and water?
a.
cooling of the power plant
b.
mining of uranium
c.
storage of radioactive waste
d.
monitoring the reactor
Please select the best answer from the choices provided
A
B
C
D
answer is (B)
Answer:
b.
mining of uranium
Explanation:
Uranium is one of the radioactive elements o the earth's crust. Uranium mining is associated with quite a number of demerits despite its numerous advantages in nuclear energy production. Being a radioactive substance, uranium mining impacts both the air, surface water as well as underground water negatively.
Answer:
it is actually
b( mining of uranium)
Identify the products of cellular respiration and photosynthesis
Answer:
Cellular respiration:
[tex] C _ 6 H _ { 1 2 } O _ 6 \implies 6 C O _ 2 + 6 H _ 2 O + 3 8 A T P [/tex]
Photosynthesis:
[tex]6CO_2+12H_2O \implies C_6H_{12}O_6 +6O_2+6H_2O[/tex]
Explanation:
The process of breaking down the sugar into a form of usable energy by the cell is called cellular respiration.
It can be shown by an equation as:
[tex] C _ 6 H _ { 1 2 } O _ 6 \implies 6 C O _ 2 + 6 H _ 2 O + 3 8 A T P [/tex]
So the product here includes ATP which is the energy along with carbon dioxide and water.
While photosynthesis is the process where sunlight is used to convert the carbon dioxide into sugars to be used as energy.
[tex]6CO_2+12H_2O \implies C_6H_{12}O_6 +6O_2+6H_2O[/tex]
Here the products are sugars, oxygen and water.
which is a gamete
A. cervix
B. egg
C. embryo
D. estrogen
Answer:
Egg
Explanation:
Apex
what do complement proteins do?
a- they heal tissue.
b-they cause fever
c-they signal phagocytes
d-they transport hormones
Answer:
Heal tissue
Explanation:
The complement system is a part of the immune system that enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism, promotes inflammation, and attacks the pathogen's cell membrane.
Which organ controls breathing? lungs alveoli heart diaphragm
Walking to work is one way of helping improve air quality
Please select the best answer from the choices provided
T
F
Answer:
The answer is that its true
The correct answer is T (True)
Explanation:
Air quality is a term used to describe pollutants in the air, in this way, if pollutants concentration is high the quality of air is low. Therefore, to improve air quality it is necessary to reduce air pollution or avoid any action that can lead to it. This can be achieved through multiple individual actions such as avoiding to burn any material such as trash or leaves, stop the use of products that can pollute the air and also, walk or use a bike as an alternative to cars. According to this, it is true walking to work is one way of helping air quality because by doing this you avoid increasing pollutants in the air produced by the use of fossil fuels and thus improve air quality.
What causes differences in air pressure? the windchill factor the horizontal movement of air the speed at which wind moves the unequal heating of Earth’s atmosphere
Answer:
D) unequal heating of the earths atmosphere
Explanation:
Can't explain taking timed test, But I did get this question correct in an assignment.
Hope this helped!
Have a good day!
The unequal heating of Earth's atmosphere causes differences in air pressure. Hence, option D is correct.
What is air pressure?Everything you touch is pressed upon by the weighty air that surrounds you. This pressure is referred to as air pressure or atmospheric pressure. It is the force that the air above a surface applies to it while gravity pulls the surface toward Earth. A barometer is frequently used to measure atmospheric pressure.
The molecules and atoms that make up the many layers of the atmosphere are continually moving in arbitrary directions. Despite their small size, when they hit a surface, they apply pressure that humans perceive as a force.
The unequal heating of Earth's atmosphere causes differences in air pressure. Hence, option D is correct.
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What codes for RNA?
A. DNA
B. Protiens
C. Polypeptides
D. Amino Acids
Hello!
Answer:
The correct answer is D. DNA
Explanation:
DNA is code for RNA.
Hope this helps you!
Have a nice day! :)
Thank you so much!
-Charlie
Hello There!
"DNA" codes for "RNA"
DNA stands for "Deoxyribonucleic Acid" and is the hereditary material in humans and almost all other organisms.
What could explain the curve in this population growth graph?
a reduction in predators
a natural disaster
a population crash
a reduction in the birth rate
Answer:
d. a reduction in the birth rate
Explanation:
Answer:
D
Explanation:
The South Korean government was led by President ..
Answer:
Syngman Rhee
He was elected the first president of the Republic of Korea from July 24, 1948 - April 26, 1960.
Syngman Rhee led the South Korean government after winning the elections in 1948.
Who was Syngman Rhee?
The very first government established in Korea was in August 1948. The First Republic of Korea was formed when the US military army ended its rule in Korea after Japanese colonialism.
In 1948, the general elections were conducted, and as a result, Syngman Rhee of the Liberal party was chosen as the first President of the Republic of Korea.
He served his term from 1948 to 1960 and was the only candidate from the Provisional Government to be elected as the President. He resigned from his post due to various reasons which led to the formation of the second Republic of Korea.
Therefore, Syngman Rhee was the President of the First Republic of Korea.
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How does the body maintain homeostasis when its inner temperature becomes higher than the normal body temperature?
Answer:
Blood vessels dilate, resulting in heat loss to the surrounding.
Sweat glands secrete fluid. As the fluid evaporates, heat is lost from the body.
Explanation:
When the inner temperature becomes higher than the normal body temperature;
Blood vessels dilate, resulting in heat loss to the surrounding.
Sweat glands secrete fluid. As the fluid evaporates, heat is lost from the body.
In this way the body is able to maintain homeostasis following a rise in body temperature.
Answer:by sweating (b)
Explanation:
Agriculture uses large amounts of water for irrigation.
Please select the best answer from the choices provided
T
F
goup of cells that work together to perform a specific function.
Answer: Tissue
Explanation:
Why are common names not always useful to biologists?
Answer:
One reason why many common names are not always useful to biologists is because "They can apply to more than one animal," since terms like "cat" and "dog" refer to large families of animals, not specific ones.
Mosquitoes can often transmit viruses from one organism to another, acting as _______ of the virus.
A. symbionts B. parasites C. bacteriophage D. vectors
Hello There!
Mosquitoes can often transmit viruses from one organism to another, acting as VECTORS of the virus.
Answer
(D). vectors is a correct answer
Explanation:
A vector transferred the infected agent from the animals which are infected to the human, which results in vector-borne disease.Mosquitoes are one of the examples of the biological vector which causes vector-borne diseases by carrying an infectious agent they transfer to the human through its bite.Disease which is transmitted by the mosquitoes is dengue, yellow fever, malaria, etc. Thus this how mosquitoes can transmit viruses from one organisum to another by acting as biological vector which carry infectious agent.What statement correctly compares chemical reactions with nuclear reactions?
Chemical reactions involve the transfer or sharing of electrons without changing the nuclei, while nuclear reactions involve changes in the nucleus, leading to different elements and the release or absorption of a massive amount of energy.
Explanation:Chemical reactions and nuclear reactions differ fundamentally in the processes and changes that occur at the atomic level. In a chemical reaction, electrons are transferred or shared between atoms, leading to the formation and breaking of chemical bonds. However, during these reactions, the nuclei of the atoms remain unchanged, and the number of atoms of each element is conserved, indicating adherence to the law of conservation of mass. On the other hand, a nuclear reaction involves changes to the nuclei themselves, which can result in the transformation of elements and a notable release of energy.
Nuclear reactions often involve the rearrangement of nucleons (protons and neutrons) within the nucleus, leading to the emission or absorption of particles, such as alpha (α) particles, beta (β) particles, or gamma (γ) rays. These reactions are accompanied by enormous energy changes, far exceeding those of chemical reactions. Nuclear reactions can lead to a change in mass that, according to Einstein's equation E=mc², corresponds to a significant release or absorption of energy. Unlike the case of chemical reactions, in nuclear reactions the laws of conservation of mass and energy are not individually valid but are combined into the law of conservation of mass-energy.
The energy changes in nuclear reactions can be observed in processes such as fission, where heavy nuclei split apart releasing energy, or fusion, where light nuclei combine to form a heavier nucleus, also releasing energy. The amount of energy involved in nuclear reactions is orders of magnitude greater than for chemical reactions, illustrating the major difference in energy scales between the two types of reactions.
What controls activities within a eukaryotic cell?