Answer:
TetradExplanation:
Tetrad is the term for the two sets of chromatids formed in the parent cell. Thus, the correct option is D.
What are chromatids?Chromatids are refers to as which allow cells to store two copies of their information in preparation for cell division. This is important to establish that daughter cells are healthy and fully functional and carrying a full complement of the parent cells DNA.
Chromatid permits cells to store two copies of their information in formation for cell division.
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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.
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.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.
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.
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 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)
Give two example of things that can make cancer more likely
Answer:
Sun exposure and Tobacco
Explanation:
Tobacco links to lungs cancer because of the tar and carbon monoxide which reduces the amount of oxygen that can be carried by red blood cells
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.
What is ultraviolet radiation
Answer:
Radiation in the part of the electromagnetic spectrum where wavelengths are just shorter than those of ordinary, visible violet light but longer than those of x-rays.
Explanation:
Ultraviolet radiation (UV) is a type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays, ranging from 400 nm to 10 nm. It is mostly blocked by Earth's ozone layer but can cause skin issues like sunburn or skin cancer with extensive exposure. Observing UV astronomy is preferably done from space to avoid absorption by the atmosphere.
Ultraviolet radiation (UV) is a form of electromagnetic radiation that is more energetic than visible light but less energetic than X-rays. The term 'ultraviolet' means 'beyond violet', indicating that UV light has a higher frequency than the violet end of the visible spectrum. UV radiation has wavelengths ranging from about 400 nanometers (nm) down to 10 nm, which positions it between visible light and X-rays on the electromagnetic spectrum. While invisible to the human eye, UV radiation can have various effects, such as causing sunburn or even skin cancer with excessive exposure. The majority of UV radiation from the Sun is blocked by Earth's ozone layer, but the fraction that reaches the surface has significant biological effects. For astronomers, observing the universe in ultraviolet wavelengths is best done from space due to Earth's atmosphere absorbing most of the UV radiation.
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:
safety precautions in the biology laboratory
Answer: Biology safety precautions
Explanation:
1. Be Prepared.
2. Be Neat.
3. Be Careful.
4. Wear Proper Clothing.
5. Be Cautious With Chemicals.
6. Wear Safety Goggles.
7. Locate Safety Equipment.
Answer:you want to make sure you have the proper equipment such as glasses or gloves and to follow instructions
Explanation:
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 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.
Question 12 (5 points)
Which region contains the halogen family of elements
Answer:
The answer is C.
Explanation:
Halogens occupy Group 17 of the Periodic Table. This group contains six different nonmetallic elements.
Answer:
C
Explanation:
The reason is that C represents group 17 of the periodic table, the halogens.
The halogens are a group of elements (in group 17) that are one electron short from achieving their full octet, and being stable. Due to this fact, they are extremely reactive, and will react with almost any substance to accept that one extra electron to become stable.
The other groups represented by letters are:
A- Alkali metals
B- Alkaline metals
C- Halogens
D- Nobel gasses
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.
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.
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:
which is a reliable source of scientific information
Answer:
a website with .edu .gov or a book written by a famous professsor or scientist
Explanation:
Answer: C
Explanation:
Which of the following is the most prominent difference between brand-name medications and generic medications? A. Brand-name medications are easier to purchase because generic medications usually need to be specially ordered. B. Brand-name medications have a guarantee of quality and effectiveness from the manufacturer and generic medications don't. C. Generic medications contain the same ingredients as brand-name medications, but the ingredients in brand-name medication are of a higher quality. D. Brand-name medications contain a trademark and generic medications are referred to by the name given to them based on their chemical makeup.
Answer:
A. Brand-name medications are easier to purchase because generic medications usually need to be specially ordered.
Explanation:
Generic medications are not an over the counter supply because some people might not use them as they should be used. You have to set up an appointment with a doctor to get these medications ordered for you.
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.
Which statement correctly describes glucose (C6H120.?
O
It is made of matter and contains twenty-four molecules.
It is an element made of three types of atoms.
It is an atom made up of carbon, hydrogen, and oxygen.
It is a compound made of twenty-four total atoms of three different elements.
O
(HELP!!)
The statement that correctly describes glucose is as follows:
It is a compound made of twenty-four total atoms of three different elements.Thus, the correct option is D.
What is a Glucose?Glucose may be defined as a type of monosaccharide that significantly contains six carbon atoms. It is considered the main type of sugar in the blood and is the major source of energy for the body's cells. It is also being an important component of many other carbohydrates.
Glucose is not an element or atom. So, options B and C are eliminated. It does not contain twenty-four molecules rather than it comprises twenty-four total atoms of three different elements. And these three elements are Carbon (C6), hydrogen (H12), and oxygen (O6). Hence, instead of an element or atom, glucose is considered a compound.
Therefore, the correct option for this question is D.
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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.
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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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 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:)
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
An organism is found that has the following traits:
• Has a backbone
• Has lungs
• Can reproduce on land
What kingdom does this organism most likely belong in?
A. Animalia
B. Plantae
C. Prostisa
D. Fungi
Answer: A. Animalia
Explanation:
The correct answer is option (A) Animalia
What are amphibians?
Amphibians are vertebrates (animals with a backbone) that can live both in water and on land in adulthoodWhat do you mean by kingdom?
In biology, kingdom is a taxonomic rank composed of smaller groups called phyla (or divisions in plants). Historically, kingdom is the highest taxonomic rank, or the most general taxon used to classify organismsLearn more about kingdom below
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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 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: