Duplicated chromosomes are attached to each other by
Select one:
a. tetrads
O b. clones
c. centromeres
d. chromatids

Answer:

it's R or side

Explanation:

Answer:

ughhh.... blues clues

Explanation:

Over all, it is a pretty good answer and very complete. I wouldn't say Kudzu "climbs", I suggest just to say it grows up on other plants and trees affecting them negatively by suffocating them.

Maybe you could explain a little bit more about the characteristics of the plant.

It is excellent how you say it is an agressive and competitor but I wouldn't compare it with a predator, maybe more with a parasite.

Answer:

An ecological community in which populations of plants or animals remain stable and exist in balance with each other and their environment. A climax community is the final stage of succession, remaining relatively unchanged until destroyed by an event such as fire or human interference.

Explanation:

The movements known as dorsiflexion and plantar flexion involve moving the foot.

Dorsiflexion and plantar flexion are specific movements that occur at the ankle joint, involving the foot. Dorsiflexion refers to the movement of the foot in which the toes are lifted towards the shin, while plantar flexion involves pointing the foot downward, as in standing on tiptoes.

These movements are controlled by muscles located in the lower leg, such as the tibialis anterior and the gastrocnemius-soleus complex. The tibialis anterior muscle is responsible for dorsiflexion, contracting to lift the foot and toes, while the gastrocnemius and soleus muscles are responsible for plantar flexion, contracting to point the foot downward.

The movements of dorsiflexion and plantar flexion are essential for various activities, including walking, running, jumping, and maintaining balance. They allow for proper positioning of the foot during gait and contribute to the overall movement and stability of the lower extremity.

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The complete question is:

The movements known as dorsiflexion and plantar flexion involve moving the _____.

Answer:

DNA

Explanation:

Hope it helps:)

Therefore, the effective spring constant of the DNA molecule is

\(1.98 x 10^-10 N/m.\)

A molecule of DNA (deoxyribonucleic acid) is a long, double-stranded helical structure that encodes genetic information.

It is made up of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base. DNA is responsible for the genetic makeup of living organisms and is essential for the inheritance of traits from parents to offspring. Now, let us calculate the effective spring constant of the DNA molecule.

The length of the molecule of DNA = L = 2.34 m

Compression = 1.35 %

= 0.0135

Length after compression = L'

= L - ΔLΔ

L = 0.0135 x 2.34

= 0.03159 m

Charge on each end = q

= 1.6 x 10^-19 Coulomb

The Coulomb constant = k

= 9 x 10^9 Nm^2/C^2

The effective spring constant = k'

Using Coulomb's law, we can determine the force of repulsion between the two charges:

F = kq^2/L'^2

Since the helical molecule acts like a spring, it will exert a force opposite to the repulsive force. The effective spring constant, k', can be determined using the following formula:

F = k'xΔL

Therefore,k' = F/ΔL

Substituting the given values into these formulas:

\(F = 9 x 10^9 x (1.6 x 10^-19)^2/(0.03159)^2\)

= 6.27 x 10^-12 NK

= F/ΔL

\(= 6.27 x 10^-12/0.03159\)

= 1.98 x 10^-10 N/m

Therefore, the effective spring constant of the DNA molecule is 1.98 x 10^-10 N/m.

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A similarity between PCR and DNA replication would be that both are chain processes that polymerize.

They also move along each strand in the 5′ to 3′ direction. Due to their antiparallel orientation, the two DNA strands polymerize in opposing directions. Enzymes that polymerize DNA also carry out both processes.DNA replication and PCR have a number of characteristics. Both are methods for creating DNA. Both are polymerizing chain reactions that move along each strand in the 5′ to 3′ direction. Double-stranded DNA has split apart during both procedures.

PCR needs a DNA polymerase enzyme, which creates new DNA strands by utilizing existing strands as templates, much like DNA replication in an organism. Taq polymerase is the best choice for PCR due to its thermal stability. As will be demonstrated, the template DNA is repeatedly denatured at high temperatures.

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Answer:

1. cellular respiration

2. ATP

3. Mitochondria

4. cellular respiration

5. Heart muscle cells These cells need more energy, so they contain more mitochondria than any other organ in the body

6. Glucose is obtained from food

7. your body uses more oxygen and produces more carbon dioxide

Explanation:

Following are the answers:

1. cellular respiration

2. ATP

3. Mitochondria

4. cellular respiration

5. Heart muscle cells  need more energy, so they contain more mitochondria than any other organ in the body

6. Glucose is obtained from food

7. your body uses more oxygen and produces more carbon dioxide.

ATP (adenosine triphosphate) is needed for this process to occur. ATP is the energy-carrying molecule created in this process. This process primarily occurs in the mitochondria. This process is called cellular respiration. Cells with high energy demands, such as muscle cells, have more mitochondria because mitochondria produce ATP.

Glucose primarily comes from the digestion of carbohydrates in the diet. Respiration increases during exercise to meet the increased energy demands of the muscles and maintain homeostasis.

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Answer:

d. metal : alloy

Explanation:

a compound is a combination of multiple elements, just as an alloy is a combination of multiple metals.

for example, water is a compound made of hydrogen and oxygen, and brass is an alloy of zinc and copper

Root hairs do not significantly increase the volume of a root, but they greatly increase its surface area. This increase provides the plant with a greater capacity for absorbing water and nutrients from the soil.

The surface area of a root is considerably increased by root hairs, and this boosts the plant's capacity to absorb water and nutrients from the soil. Although root hairs do not significantly increase the root's volume, they do significantly expand its surface area. Long, thin projections of root cells that stick out into the soil are called "root hairs." They significantly expand the root system's surface area, which improves the plant's ability to absorb water and nutrients. When compared to the surface area of the root, the surface area of the root hairs might be 10 to 100 times larger.

Plants benefit from the increase in surface area offered by root hairs in a number of ways. The ability to better absorb water and nutrients from the soil, which are crucial for plant growth and development, is the first benefit. Moreover, it aids in the plant's establishment of a more solid root system in the soil, which is necessary for stability and support. Last but not least, it enables the interchange of gases between the plant and the soil, which is necessary for respiration and other metabolic processes.

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Answer:

Diffusion

Explanation:

The concept of diffusion states that molecules like to travel from areas of high concentration to low concentration.

Let's think about an example. Let's say you are having a party at your house and in one room there is 100 people and in the other room connected to it, there is only 10 people. What do you think is going to happen as time passes? Right, people are going to move to the room where there is less people so as to equally disperse themselves across the area. The same thing happens within our body with ions and gases.

Ions can diffuse into or out of cells based off their concentration gradients. If there are too many ions on one side, they will simply move to the other side. There are different types of diffusion. Passive diffusion and facilitated diffusion, but those are for a different conversation.

The study of a living being is called biology.

The correct answer to the question is yes.

Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world.

According to the question,  the reptiles living in an area is considered a reptile.

Hence, the correct answer is yes.

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Answer:

Antigens are secreted by the endocrine system

Explanation:

The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with

Answer:

B. Their core temperature increases.

Explanation:

Pathogens are organisms such as virus, fungi, bacteria, protozoa, worms that causes diseases to its host.

Homeostasis can be defined as a process through which a living organism maintains a steady or stable physical, internal and chemical environment ideal to enhance life and proper functionality.

If a person becomes infected with a pathogen, such as a virus. The internal stimulus that most likely takes place in order for their body to maintain homeostasis is that their core temperature increases. This is because pathogens such as a virus do not thrive or survive in a hot environment; they're naturally allergic to high temperature (heat).

Additionally, in order to reduce pathogens and prevent illness, it is very important to cook our food to high degrees of temperatures. These pathogens are usually destroyed by heat, so it's necessary and important to properly cook food to a high temperature by grilling, boiling, frying, roasting and baking. Also, a hot-holding unit can be used to store food in order to reduce pathogens.

Explanation:

The nervous system has electrical impulses which are the messengers in the nervous system.

The endocrine system has hormones which are the chemical messengers in the endocrine system that target cells through the bloodstream

A significant epigenetic modification known as histone acetylation modifies the chromatin architecture and controls the expression of genes by either opening or closing the chromatin structure.

Chromosome structure is changed by histone acetylation.

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The virus was able to evade containment attempts due to a variety of circumstances, some of which are specific to West Africa.

The Ebola virus may have spread as a result of factors like population increase, encroachment into forested areas, and direct contact with wildlife (such eating bushmeat).

The bulk of Ebola virus disease cases and outbreaks since its discovery in 1976 have happened in Africa.

Where communities used burial customs that involved touching or washing corpses, the virus spread quickly.

Therefore, Ebola virus to have struck where it did in West Africa.

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Answer:

The process of alleles, even if both are bb there is a very very low chance of it being Bb, but completely impossible of being BB.

Explanation:

The allele table is not 100% correct all the time. just most.

The role the cristae of the mitochondria play in energy production is increasing the surface area for chemical reactions.

The mitochondrion is a double membrane cell in the body of human beings used for energy production it also contains a greatly folded structure that is called the mitochondrion cristae.

The mitochondria are the cell responsible for energy production through a series of reactions

Mitochondria cristae are the folded structures inside the mitochondria.

The mitochondria cristae are greatly folded for them to increase the surface area.

An increase in surface area causes an increase in the surface of contact for the redox reaction to take place.

The enzymes used for energy production found in the mitochondrion are found on the surfaces of the greatly folded cristae.

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Answer:Pp

Explanation: the only possible answer is Pp when looking at the other phenotypes presented.

Based on the diagram, the observed pattern of abundances for elements with an atomic number between 6 and 20 suggests that there is a general trend of decreasing abundance with increasing atomic number. However, elements with even atomic numbers tend to be more abundant than those with odd atomic numbers.

The diagram likely represents a periodic table or a plot showing the relative abundances of elements in a given context. In the periodic table, elements are arranged in order of increasing atomic number. The pattern of decreasing abundance with increasing atomic number reflects the natural distribution of elements in the universe, where lighter elements are more abundant than heavier ones. The observation that elements with even atomic numbers are more abundant than those with odd atomic numbers could be attributed to various factors. It might be a result of the synthesis processes that occur in stars and stellar explosions, which can preferentially produce elements with even atomic numbers. Additionally, the stability and availability of certain elements during nucleosynthesis processes can influence their relative abundances. It's important to note that the specific context of the diagram or dataset used to generate the pattern of abundances could influence the observed trend. Further analysis and examination of the underlying data would be necessary to provide a more detailed explanation for the observed pattern.

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Answer:

Fossilized animals are ancestors of animals that exist today

Explanation:

A fossil is a preserved remain or trace of an organism (e.g., an animal) in a sedimentary rock which lived in a past geological age. Moreover, a fossil record is a group of fossils that are arranged chronologically and/or in taxonomic order. The fossil record provides direct evidence of extinct organisms and shows the progression of the evolution of organisms (from ancestors to descendants) over millions of years. In consequence, the fossils from recent geological periods are more similar to organisms living on Earth today.

The area shaded in orange receives blood supply from the right coronary artery.

Right coronary artery is the one that originates from the right cusp of the aortic valve. The artery is known to supply blood to the right ventricle, the right atrium, and the SA (sinoatrial) as well as the AV (atrioventricular) nodes.

Sinoatrial node is known to be the natural pacemaker of the heart. It is also known by the name sinus node. It is located on the epicardium wall of the right atrium. It is responsible for generating an electrical impulse which spreads out signals to the complete heart.

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The endocrine system consists of various glands that create and release hormones.

The endocrine system regulates the physiological functions of the body through the release of mediators known as hormones which are produced and secreted by the endocrine glands.

The endocrine glands are ductless specialized structures that secrete the hormones produced directly into the interstitial fluid surrounding the tissue from where it diffuses into the blood capillaries and then it reaches its target cell or organ.

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The one that is not a primary consumer would be the organism that does not feed on plants directly.

They are organisms within a food chain or food web whose diets rely directly on green plants or producers within the ecosystem.

Organisms that are not green plants and that do not feed directly on green plants would be secondary, tertiary, or quarternary consumers.

Thus, the organism among the listed options that is not a primary consumer would be the one whose diet does not directly depend on producers.

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Answer:

The correct answer is A

Explanation:

Coope's hawks

Kelly's genotype is heterozygous (Cc).

A genotype is theoretical unit of heredity of living organisms.

A gene may take several values and in principle predetermines a precise trait of an organism's form (phenotype), such as hair colour.

According to this question, Kelly is a woman who has normal colour vision. However, Kelly's father was colour blind.

This means that Kelly is heterozygous for colour blindness and inherited allele "C" from her mother but allele "c" from her father.

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Answer:

The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory system, the digestive system, the excretory system, the nervous system, the endocrine system, and the reproductive

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