Answer:
Explanation:
the path of a nerve signal involved in kicking a ball .When and where do you motor or sensory nerves fire?
The nervous system is made up of two parts. Each part contains billions of neurons. The first part is the central nervous system. It contains the brain and spinal cord, which is a fibrous, ropelike structure that runs through the spinal column down the middle of the back.
The other part is the peripheral nervous system. It consists of thousands of nerves that connect the spinal cord to muscles and sensory receptors. The peripheral nervous system is responsible for reflexes, which help the body avoid serious injury. It's also responsible for the fight or flight response that helps protect you when you feel stress or danger.
Let's examine an individual neuron up close.
Here is a peripheral nerve. Each one of the nerve bundles, or fascicles, contains hundreds of individual nerve.
Here's an individual neuron, with its dendrites, axon, and cell body. The dendrites are tree-like structures. Their job is to receive signals from other neurons and from special sensory cells that tell us about our surroundings.
The cell body is the headquarters of the neuron. It contains the cell's DNA. The axon transmits signals away from the cell body to other neurons. Many neurons are insulated like pieces of electrical wire. The insulation protects them and allows their signals to move faster along the axon. Without it, signals from the brain might never reach muscle groups in the limbs.
Motor neurons are responsible for voluntary control of the muscles all over the body. The operation of the nervous system depends on how well neurons communicate. For an electrical signal to travel between two neurons, it must first be converted to a chemical signal. Then it crosses a space about a millionth of an inch wide. The space is called a synapse. The chemical signal is called a neurotransmitter.
Neurotransmitters allow the billions of neurons in the nervous system to communicate with one another. That's what makes the nervous system the body's master communicator.
which is not a function of all cells ?
a. get rid of wastes
b. produces energy
c. burning nutrients ( sugar )
d. all are cell functions
Answer:
burning nutrients ( sugar)
Question 13 (5 points)
What percent of energy is passed on to the next trophic level in an ecosystem?
The answer is 10 percent
In diffusion,
A) the molecules only move if ATP is present
B) the molecules move from an area of low concentration to high concentration
C) the molecules are unable to permeate the membrane
D) the molecules of a substance spread out evenly in the space they occupy
For instance, when a person spray his or her room, from where he or she spray will spread throughout the corners of the room
What statement describes a controlled experiment
Answer:
What is a controlled experiment? This is when a hypothesis is scientifically tested. In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled.
Explanation:
Hope it helps
why is it important to know the beginning of the universe and the solar system?
Answer:
In the process of exploring the birth of the earliest galaxies in the universe, to understand the planetary systems, explore planets that are capable of supporting life, and to learn whether life began elsewhere in the solar system have helped us advance and build our civilization.
2. Where is the element Carbon found in Photosynthesis?
Answer:
At land
Explanation:
Carbon is a raw material for photosynthesis, in the form of carbon dioxide. Green plants use it to make vital organic compounds. On the land, plants get the carbon they need as a gas from the air. In water, plants ranging from seaweeds to phytoplankton are supplied by dissolved carbon dioxide, CO2.
Chloroplasts and mitochondria are both involved in energy conversion in cells and share many similarities. Differentiate between chloroplasts and mitochondria. Choose ALL of the characteristics that apply ONLY to chloroplasts.
A) contain DNA B) found in plants C) contain pigments D) used in photosynthesis E) used in aerobic respiration
Explanation:
contain pigments c and used in photosynthesis
The main difference between chloroplasts and mitochondria are contained pigments, used in photosynthesis. The correct options are C and D.
What are chloroplast and mitochondria?The organelle found inside the cells of plants is known as a chloroplast. Additionally, there are particular algae that serve as the photosynthesis sites, where the sun's energy should be converted into chemical energy for the sake of growth. In addition to being employed in photosynthesis, it also contains pigments.
Membrane-bound cell organelles known as mitochondria (mitochondrion, singular) produce the majority of the chemical energy required to fuel cellular metabolic operations.
Therefore, the correct options are C) containing pigments and D) used in photosynthesis.
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Select the correct answer.
With support for cases such as Brown v. Board of Education, the National Association for the Advancement of Colored People (NA
its attention during the early days of the civil rights movement on doing which of the following?
Answer:
Although the Declaration of Independence stated that "All men are created equal," due to the institution of slavery, this statement was not to be grounded in law in the United States until after the Civil War (and, arguably, not completely fulfilled for many years thereafter). In 1865, the Thirteenth Amendment was ratified and finally put an end to slavery. Moreover, the Fourteenth Amendment (1868) strengthened the legal rights of newly freed slaves by stating, among other things, that no state shall deprive anyone of either "due process of law" or of the "equal protection of the law." Finally, the Fifteenth Amendment (1870) further strengthened the legal rights of newly freed slaves by prohibiting states from denying anyone the right to vote due to race.
Despite these Amendments, African Americans were often treated differently than whites in many parts of the country, especially in the South. In fact, many state legislatures enacted laws that led to the legally mandated segregation of the races. In other words, the laws of many states decreed that blacks and whites could not use the same public facilities, ride the same buses, attend the same schools, etc. These laws came to be known as Jim Crow laws. Although many people felt that these laws were unjust, it was not until the 1890s that they were directly challenged in court. In 1892, an African-American man named Homer Plessy refused to give up his seat to a white man on a train in New Orleans, as he was required to do by Louisiana state law. For this action he was arrested. Plessy, contending that the Louisiana law separating blacks from whites on trains violated the "equal protection clause" of the Fourteenth Amendment to the U.S. Constitution, decided to fight his arrest in court. By 1896, his case had made it all the way to the United States Supreme Court. By a vote of 8-1, the Supreme Court ruled against Plessy. In the case of Plessy v. Ferguson, Justice Henry Billings Brown, writing the majority opinion, stated that:
Explanation:
What is the probability that a heterozygous black guinea pig crossed with a white one will produce a white offspring?
What happens when the most limiting
factor in an ecosystem is removed?
A. population growth increases
B. neutral population growth
C. population growth ceases
D. nothing happens
Answer:
A. Population growth increases
Explanation:
When the growth is no longer being limited by a limiting factor, the population increases because the factor that limits the growth is gone.
Which TWO pieces of evidence suggest that the test of introducing Texas panthers into Florida
was successful?
A. Va
The total population of panthers in Florida has increased over time.
B.
The percentage of pure Florida panthers in the region has increased over time.
C.
The area of habitat available to panthers has increased over time.
D.
The hybrid panthers have better survival than pure Florida panthers.
E.
The percentage of hybrid panthers in the population has decreased over time.
1. A rock sample has a mass of 16 grams:
and a volume of 8 cubic centimeters.
When the rock is cut in half, what is
the volume and density of each piece?
(1) 8 cm3 and 0.5 g/cm3
(2) 8 cm² and 1.0 g/cm3
(3) 4 cm' and 2.0 g/cm3
(4) 4 cm3 and 4.0 g/cm3
1
Answer:
(3) 4 cm' and 2.0 g/cm3
Explanation:
Given:
volume= V= 8 cm³
mass= m= 16 g
The density is the mass per volume of a substance, so the density of the rock is:
density= d= 16 g/8 cm³= 2 g/cm³
When we cut the rock in half, we have a half volume and a half mass:
V= 8 cm³/2= 4 cm³
m= 16 g/2= 8 g
But the density is not altered because it is an intrisic property - it does not change with the amount of subtance. Thus, the density of a half rock is:
d = m/V= 8 g/4 cm³= 2 g/cm³
During meiosis, when do the sister chromatids separate?
a
Metaphase I
b
Metaphase II
c
Anaphase I
d
Anaphase II
Answer: During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate. Anaphase: During anaphase, the centromere splits, allowing the sister chromatids to separate.
Explanation:
Explain how water enters the roots of the trees from the soil
Which of the following is NOT a function of the skeletal system?
a. contraction
b. blood cell production
c. support
d. protection
Answer:
blood cell production
Explanation:
ur welcome!
b
Explanation:
it is part of the vein system
is plantain a tuber crop
Answer:
yes
Explanation:
Another fact is that the Banana plant is one of those perennial plants whose parts can be used as food, starting from its fruits-the bananas to its roots tubers. Banana tubers have been used as food mostly in states like Uganda, Indonesia, and also India.
When nonionic solids dissolve in water, they
Answer:
Substances that do not form ions when they dissolve in water are called non-electrolytes. And example of a non-electrolyte is sugar. Sugar will readily dissolve in water but doesn't form cations and anions in solution. That is, there are no charge carriers formed.
In a crosstab, the cells show:
Answer:
The cells in a crosstab show summary data for the corresponding row and column, based on a measure and a summary function. The simplest crosstab is a frequency matrix, such as the following example, which shows the count of pets (measure) by gender (column) and species (row). Example of a simple crosstabExplanation:
What is the expected ratio of coat colors in the offspring of two palomino horses
Answer:
25% DD dominant, 25% dd, 50% Dd
Which term can avoid traveling through a solid, a liquid, or a gas?
The term that can avoid traveling through a solid, a liquid, or a gas is "electromagnetic radiation" or "light."
Electromagnetic radiation: Electromagnetic radiation refers to the propagation of energy in the form of waves or particles through space. It includes various types of radiation, such as visible light, radio waves, microwaves, X-rays, and gamma rays.Traveling through solids: Solids have a tightly packed arrangement of atoms or molecules, which makes it difficult for electromagnetic radiation to pass through them. The particles in solids interact with the radiation and absorb or scatter it, preventing its transmission.Traveling through liquids: Liquids have a less rigid arrangement of particles compared to solids. While some electromagnetic radiation can pass through liquids, it may be partially absorbed or scattered due to interactions with the liquid molecules.Traveling through gases: Gases have widely spaced particles, allowing electromagnetic radiation to travel more freely compared to solids and liquids. However, certain gases can still interact with specific types of radiation, such as absorbing certain wavelengths or causing scattering.Overall, electromagnetic radiation, or light, has the unique property of being able to propagate through a vacuum, which means it can travel through space where there is no matter present, as well as through various mediums, including gases, liquids, and solids.
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Describe four ways that protist get food?
Answer:
There are many plant-like protists, such as algae, that get their energy from sunlight through photosynthesis. Some of the fungus-like protists, such as the slime molds (Figure below), decompose decaying matter. The animal-like protists must "eat" or ingest food. Some animal-like protists use their "tails" to eat.
Explanation:
which of the following summarizes the endocrine system's role?
- to carry nerve impulses throughout the body in order to maintain homeostasis
- to receive information about what is happening inside and outside of the body
- to regulate body activities (like growth and immunity) by sending chemical messages
- to send electrical messages about how the body should respond to stimuli
Answer:
To regulate body activities (like growth and immunity) by sending chemical messages
Explanation:
I'm not 100% sure about this, but this seems most likely after a quick internet search.
I hope this helps, but you might want to double-check this.
Which of the following allows water to move much faster across cell membranes? A) the sodium-potassium pump B) ATP C) peripheral proteins D) aquaporins
Answer:
D
Explanation:
I believe the answer would be aquaporins
Aquaporins efficiently speed up the total rate of water diffusion across the cell membrane due to the slow diffusion of water through the lipid bilayer, hence option D is correct.
What are aquaporins?Aquaporins (AQP) are essential membrane proteins that act as conduits for the passage of water and, occasionally, tiny solutes.
The Na+ K+ pump is an electrogenic transmembrane ATPase that was initially identified in 1957. It is located on the cytosolic side of the cell's outer plasma membrane. For every ATP, the Na+ K+ ATPase pumps 3 Na+ out of the cell and 2K+ into the cell.
Therefore, animals, plants, and microorganisms all have them preserved. Every aquaporin molecule has a pore in the middle, according to structural investigations of the molecules.
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Which produces more energy: Cellular respiration or fermentation?
After their marriage, Calle will be covered by her husband's health insurance. Calle is ethical in completing her application for this coverage and mentions the
MS diagnosis. But she has questions. Where could Calle get information as to whether or not the insurance company will cover her expensive medications for
this disease?
Callie can get complete information about health insurance with the specific insurance company that will cover her after the marriage.
Health insurance has the purpose of covering medical expenses of users and making health services more accessible. Health insurance as other types of insurance is regulated by strict rules that define:
The members or people that are covered by the health insuranceThe services coveredThe exceptions and conditions for coverageAdditionally, each health insurance company has slighlty different regulations. Based on this, the best option for Callie is to contact the specific company to obtain valid and complete information to answer her questions.
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Have you ever saved someone's life?
Answer:
yes a cats live I saved her because a truck almost hit her
★ « Have you ever saved someone's life? » ★
I'm being honest and my answer is no because no one's life is in danger beforHow Enzymes Function Enzymes are biological catalysts. They can increase the rate of chemical reactions as much as a millionfold by lowering the energy barrier of a reaction.
Part A - Enzymes and activation energy The graph presents three activation energy profiles for a chemical reaction (the hydrolysis of sucrose): an uncatalyzed reaction, and the same reaction catalyzed by two different enzymes. Rank these by reaction rate, as measured by the rate of product formation (from the most product formed to the least product formed). To rank items as equivalent, overlap them.
Part B - Factors that affect enzymes Complete this vocabulary exercise relating to enzymes. Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. HelpReset cofactor specific denatured substrate active site catalyst complex
1. An enzyme is when it loses its native conformation and its biological activity.
2. An enzyme is considered a because it speeds up chemical reactions without being used up.
3. An enzyme is considered because of its ability to recognize the shape of a particular molecule.
4. A , such as a vitamin, binds to an enzyme and plays a role in catalysis.
5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES) .
6. A substrate binds to an enzyme at the , where the reaction occurs.
7. In a catalyzed reaction a reactant is often called a _________.
Answer:1. An enzyme is denatured when it looses its native conformation and its biological activity. Enzyme is a protein and at high temperatures, the shape of the proteins is altered, preventing it from its function. In addition change in pH above optimal may also cause denaturation of enzymes inactive.
2. An enzyme is considered a catalyst because it speeds up chemical reaction without being used up. A catalyst is a substance that speeds up chemical reactions by reducing the activation energy of the reactants, they are not consumed during the reactions. Enzyme are biochemical catalysts that speeds up chemical enzymatic reactions without being consumed just like normal catalysts.
3. An enzyme is considered specific because of its ability to recognize the shape of a particular molecule. One property of enzyme is that they are substrate specific and will act on specific substrate, others will act on a specific type of chemical bond or functional group, while others will catalyze only one reaction (absolute specificity)
4. A cofactor such as a vitamin, binds to an enzyme and plays a role in catalysis. Cofactors are mostly metal ions (such as Zn ions or iron ions) or coenzymes are inorganic and organic chemical that aid the activity of enzymes. Coenzymes are non protein molecules mostly vitamins or vitamins derivatives that enhance enzyme activity.
5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES) complex. Es complex is the intermediate formed when a substrate molecule interacts with the active sites of an enzyme. After the formation of the complex then the substrate undergoes a chemical reaction and is converted to product.
6. A substrate binds to an enzyme at the active-site, where the reactions occurs. Active sites is a region on the enzyme where substrate molecules bind and undergoes a chemical reaction where it is converted to product. These sites contain the binding site and the catalytic site.
7. In catalyzed reaction, a reactant is often called a substrate. Substrate molecule is the substance that is acted upon by an enzyme and is converted to a product. The substrate forms an interaction with the binding site of the active site then the catalytic site of the active site converts the substrate to a product during catalysis.
1. Denatured
2. Catalyst
3. Specific
4. Cofactor
5. Complex
6. Active Site
7. Substrate
The induced fit model states an substrate binds to an active site and both change shape slightly, creating an ideal fit for catalysis. When an enzyme binds its substrate it forms an enzyme-substrate complex. ... The enzyme will always return to its original state at the completion of the reaction.
"The active site of the enzyme has a complementary rigid structure" belongs to the key and lock system
Explanation:
How does biodiversity affect humans?
Biodiversity affects humans by: underpins the health and has a direct impact on all of our lives. To summarize reduced biodiversity means millions of people face a future where food supplies are more vulnerable to pests and disease, and where fresh water is in irregular or short supply. For humans that is worrying.
Most people have observed it "rain" in the produce department of grocery stores, where water sprays green leafy
vegetables from a misting system. How does this practice help to keep vegetables fresh and crisp?
A)
-B)
Extra water makes plants shiny, increasing the likelihood that consumers
will purchase the plants.
Extra water creates a hypotonic solution around plant cells, which causes
water to diffuse into the cell creating turgor pressure.
Extra water creates a hypertonic solution around plant cells, which causes
water to diffuse out of the cell plasmolysing the cells.
Extra water creates an isotonic solution around plant cells, which causes
water to diffuse into and out of the plant cells making them flaccia,
D)
Answer:
B is the answer
Explanation:
I just took the test
solve the crossword usings hints below
.........................
Answer:
1. Snail
2. Leukemia
3. Haemoglobin
4. Vertebrate
5. Fracture
6. Femur
7. Cockroach
9. Respiration