Answer:
A nerve impulse begins when a neuron receives a chemical stimulus. The nerve impulse travels through the axon membrane as an electrical action potential to the axon terminal. The axon terminal releases neurotransmitters that carry the nerve impulse to the next cell
Explanation:
and i'm mexican
Inertia keeps the ball moving horizontally. The force of gravity acts on the object, causing
If you start off with 12 strands of chromatin how many strand of chromatin do you need to end up with in each cell after meiosis
Answer:
3
Explanation:
If you start off with 12 strands of chromatin how many strand of chromatin do you need to end up with in each cell after meiosis after 3 stages.
What is meiosis?
In sexually reproducing organisms, meiosis is a kind of cell division that results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm).
Body (or somatic) cells in humans are diploid, meaning they have two sets of chromosomes (one from each parent). The egg and sperm that combine during fertilization must be haploid, or having only one pair of chromosomes, in order to sustain this state.
Each diploid cell divides twice during meiosis to produce four haploid daughter cells, which are the gametes.
Nearly every human cell contains 46 chromosomes, 23 of which come from one of our parents and 23 highly similar chromosomes from the other parent. The appropriate number of chromosomes in a cell is crucial.
Therefore, If you start off with 12 strands of chromatin how many strand of chromatin do you need to end up with in each cell after meiosis after 3 stages.
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Write the names of the eight planets in our solar system in order starting with the planet who’s orbit is the most elliptical the planet who’s orbit is most round?
Answer:
Mercury, Mars, Saturn, Jupiter, Uranus, earth, Neptune, Venus
Explanation:
planets with orbits from most elliptical to least elliptical.
raw materials are cheap true or false.
Answer: False
Explanation:
Prices are surging for raw materials, leading to higher costs for companies from home builders to clothing makers. ... Higher input costs generally accompany broad economic growth, which allows companies to pass along added expenses through higher prices of their own.
. What is needed to support or back up a claim? examples and non-examples thoughts and feelings reasons and examples facts and opinions
Answer:
Reasons And Examples,
Explanation:
You need to figure out what your claim is about to support or back it up
Hope This Helps! Please Mark Brainiest
Which statement describes a similarity between a eukaryotic and a prokaryotic cell?
A
Both cell types contain DNA.
B
Both cell types contain a nucleus.
© Both cell types undergo cell division by mitosis.
D
Both cell types contain membrane-bound organelles.
Answer:
C.
Explanation:
Because for answer A, only eukaryotes have DNA, also for B, only eukaryotes have a nucleus and lastly, for D, only eukaryotes contain membrane-bound organelles. hope this helps :)
Both cell types undergo cell division by mitosis. Therefore, option (C) is correct.
What are eukaryotic and prokaryotic cells?A nucleus and other membrane-bound organelles are exclusively found in eukaryotic cells, which is the main distinction between prokaryotic and eukaryotic cells. Prokaryotes and eukaryotes, respectively, are made up of prokaryotic and eukaryotic cells. Eukaryotes often have several cells, but prokaryotes are invariably unicellular. Eukaryotic cells are also between 100 to 10,000 times bigger and more complicated than prokaryotic cells.
Prokaryotic DNA is kept in the cytoplasm, while DNA in eukaryotes is kept in the nucleus. Additionally, double-stranded chromosomes that are compressed by histones are where eukaryotic cells store their DNA. Prokaryotic organisms, on the other hand, only contain one basic circular chromosome and a variety of plasmids, which are tiny DNA rings. In comparison to prokaryotic cells, the DNA of eukaryotic cells contains a higher percentage of non-coding DNA and proportionately less coding DNA.
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Describe the path of a phosphorous atom through four parts of the phosphorous cycle. Be sure to explain the processes involved in the transfers. Note when a form of phosphorous is available to plants. (Will mark brainliest)
Answer: One of the ways the path of a phosphorous atom starts is in a rock containing phosphate. The rock weathers, so that a phosphate ion enters the soil. A plant takes up the phosphate ion and incorporates it into a DNA molecule in a pollen grain. The grain falls back to the ground and decomposes, converting the atom back into phosphate through mineralization. The phosphate ion then leaches into the groundwater, leaving the soil.
Explanation: Plato/ Edmentum
Phosphorus moves in a cycle through rocks, water, soil and sediments, and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals.
This inorganic phosphate is then distributed in soils and water. Plants take up inorganic phosphate from the soil.
How does phosphorus enter the phosphorus cycle?
Phosphorus enters the atmosphere from volcanic aerosols. As this aerosol precipitates on earth, it enters terrestrial food webs. Some of the phosphorus from terrestrial food webs dissolves in streams and lakes, and the remainder enters the soil. Another source of phosphorus is fertilizers.
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Which equation represents the photosynthesis process?
a
CO2 + Glucose ----> H2O + Sunlight + O2
b
CO2 + H2O + Sunlight ----> Glucose + O2
c
CO2 + H2O ----> Glucose + O2
d
Glucose ----> CO2 + Alcohol + ATP
Answer:
C
Explanation:
Carbon Dioxide + Water -> Oxygen + Glucose
14. Which of the following occurs during the electron transport chain?
a. the formation of ATP by oxidative phosphorylation
b. the formation of water
c. a concentration gradient of protons
d. all of the above
Answer:
All
Explanation:
The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis.
Answer:
D
Explanation:
ATP is created in the ETC
Water is formed as a by product
The concentration gradient is what fuels the ETC. Protons (H+ ions) move across the membrane to create energy.
Hope that helps (and also hope its right, i did bio a while back)
List two diseases that are the result of a viral
attack on the human nervous system.
Answer:
rabies , Tick-borne encephalitis
Explanation:
Answer:
look at the bottom
Explanation:
Acute - the most common diseases caused by acute viral infections are encephalitis, flaccid paralysis, aseptic meningitis, post infectious and encephalomyelitis.
Practice: Biochemical Reactions Summary
Photosynthesis
Chemical Equation:
Step 1: Light-
Reaction aka
Where:
What:
Why:
Step 2: Light-
Reaction aka
Where:
What:
Why:
Answer:
Explanation:
There are two stages to photosynthesis: Reactions of light and darkness. Light-Reaction takes place in thylakoid membrane.
What is Light-Reaction takes place during Photosynthesis?Autotrophic plants produce their own food through a process called photosynthesis. Sunlight, chlorophyll, CO2, and water are four crucial components needed for this process. It is a response that is light dependent.
In plants and some other creatures, a process known as the "Dark Reaction" harnesses the energy from the sun to change carbon dioxide and water into glucose (a sugar) and oxygen.
Therefore, a sequence of chemical events known as the "Light Reaction of Photosynthesis" are what is needed for the pigment found in leaves, such as chlorophyll, to transform light energy into chemical energy in the form of ATP and NADPH.
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The enzyme that builds the complimentary strand during replication.
helicase
replicase
polymerase
synthase
Answer:
polymerase
Explanation:
It wraps itself around a polynucleotide strand and attaches new nucleotides to the exposed nitrogenous bases
After an extreme disturbance, ecological succession ultimately causes the
O A. populations of each species to keep growing
B. biodiversity to increase
O C. ecosystem to become less stable
D. biodiversity to decrease
Answer: B biodiversity to increase
Explanation:
Which of the following describes the cause of Addison's disease?
Answer:
b. Low levels of secretions of the hormones produces by the adrenal cortex
Explanation: is correct
What names are used for the top process (requiring oxygen) and the bottom process (taking place without oxygen)?
Oxygen present → Krebs Cycle → Electron transport chain
→
Glycolysis
→ Lactic acid fermentation
Oxygen not present →
Alcohol fermentation
What names are used for the top process (requiring oxygen) and the bottom process (taking place without oxygen)?
How many ATP are produced by each process shown?
Answer:
Processes that takes place with oxygen is aerobic and processes that takes without oxygen is anaerobic.
Glycolysis and Krebs Cycle produces 2 Atp and ETC produces 34 Atp
How does biodiversity affect the stability of an ecosystem?
Answer:
biodiversity in ecosystem, species, and individuals leads to a greater stability .
Explanation:
for e.g species wth high gentic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances ,diseases and climate change.
Which of the following choices is not among the most common cell shapes found in prokaryotes?
оооо
Cocci (spherical)
Bacilli (rod-shaped)
Spirochetes (spiral-shaped)
Recticuli (rectangular)
Answer:
Recticuli(rectangular)
"Recticuli (rectangular)" is not among the most common cell shapes found in prokaryotes. Therefore, option (D) is correct.
Rectangular cells, represented by "Recticuli" in your options, are not among the most common cell shapes found in prokaryotes. Prokaryotes are primarily characterized by cocci (spherical), bacilli (rod-shaped), and spirochetes (spiral-shaped) forms. Cocci are typically round, bacilli are elongated rods, and spirochetes exhibit a spiral or helical structure.
These shapes facilitate various functions such as movement, attachment, and replication. Rectangular cells, while theoretically possible, are not commonly observed in natural prokaryotic populations. The lack of real-world prevalence could be attributed to the structural challenges and limited advantages of such a shape in prokaryotic environments. The prevailing shapes have likely evolved due to their practical benefits, underscoring the connection between form and function in these microorganisms. Therefore, option (D) is correct.
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Which of these are causes of long-term climate change? Check all that apply.
Answer:
Where are the answers?
Explanation:
Answer: Earths orbit around the sun, solar energy, and volcanic eruptions
Explanation:
Earths orbit: At other times, the ellipse is more pronounced, so that the Earth moves closer and further away from the Sun in its orbit. When the Earth is closer to the Sun, our climate is warmer and this cycle also affects the length of the seasons.
Solar energy: Solar produces less life-cycle GHG emissions than conventional fossil fuel energy sources.
Volcanic eruptions: Volcanic eruptions of this magnitude can impact global climate, reducing the amount of solar radiation reaching the Earth's surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.
a chromosome is best described as a _____________
a. gene that has more than one form
b. green cell found in many plants
c. strand of DNA containing genetic information
d. reproductive cell found in certain kinds of bacteria
Answer: the answer is C
The genetically programmed death of cells is called:
Answer:
Apoptosis :)
Explanation:
How does your body respond to an increase in the waste products of energy production
Answer:
Energy is delivered to the body through the foods we eat and liquids we drink. Foods contain a lot of stored chemical energy; when you eat, your body breaks down these foods into smaller components and absorbs them to use as fuel. Energy comes from the three main nutrients carbohydrates, protein, and fats, with carbohydrates being the most important energy source. In cases where carbohydrates have been depleted, the body can utilise protein and fats for energy. Your metabolism is the chemical reactions in the body’s cells that change this food into energy.
Most of the energy the body needs is for being at rest, known as the Basal Metabolism. This is the minimum amount of energy the body requires to maintain its vital functions such as breathing, circulation and organ functions. The rate at which energy is utilised for such functions is known as the Basal Metabolic Rate (BMR) and varies based on genetics, sex, age, height and weight. Your BMR drops as you get older because muscle mass decreases.
Optimal energy metabolism requires getting sufficient nutrients from our foods, otherwise our energy metabolism underperforms and we feel tired and sluggish. All foods give you energy and some foods in particular help increase your energy levels, such as bananas (excellent source of carbohydrates, potassium and vitamin B6), fatty fish like salmon or tuna (good source of protein, fatty acids and B vitamins), brown rice (source of fibre, vitamins and minerals), and eggs (source of protein). There are actually many foods that provide an abundant amount of energy, particularly those packed with carbohydrates for available energy, fibre or protein for a slow release of energy and essential vitamins, minerals and antioxidants.
Foods are metabolised at a cellular level to make ATP (Adenosine Triphosphate)
by a process known as cellular respiration. It is this chemical ATP that the cell uses for energy for many cellular processes including muscle contraction and cell division. This process requires oxygen and is called aerobic respiration.
Glucose + Oxygen → Carbon dioxide + Water + Energy (as ATP)
Initially, large food macromolecules are broken down by enzymes into simple subunits in the process known as digestion. Proteins are broken down into amino acids, polysaccharides into sugars, and fats into fatty acids and glycerol—through the action of specific enzymes. Following this process, the smaller subunit molecules then have to enter the cells of the body. They firstly enter the cytosol (the aqueous part of the cytoplasm of a cell) where the cellular respiration process begins.
Hope this helps. ;-]
Explanation:
Suggest how coeliac disease could affect the growth of a child
Answer:
In celiac disease, gluten triggers the immune system to damage villi. Villi (VIL-eye) are finger-like projections lining the small intestine that absorb nutrients from food and send them into the bloodstream. Damaged villi can't absorb the vitamins and minerals that a child needs to grow.
Explanation:
Hope it help :)
Correct me if im wrong(if its wrong sorry)
What is most responsible for the presence of groundwater in an area?
Answer:
precipitation
Explanation:
how is the dna in a prokaryotic different from a eukaryote?
can someone help me on this question
Answer:
unknow
Explanation:
Messages are carried from the eyes to the brain by Question 5 options: nerves muscle light blood vessels.
Answer: Messages are carried from the eyes to the brain by nerves.
(specifically optic nerves)
Explanation:
When we see something, our eyes send messages to our brain through the optic nerves. Each nerve contains around a million long 'wires', called axons, which carry information from ganglion cells in the retina to relevant parts of the brain.
I got it from Goog|e, I hope it helps.
Messages are carried from the eyes to the brain by NERVES. These fibers send sensory messages between the body and brain.
The nerves are groups of fibers that receive and send sensory messages between the body and brain.
The cells that form nerves are called neurons, which use electrical and/or chemical (neurotransmitter) signals to transmit sensory information.
The optic nerve is a specialized nerve that transmits different types of visual sensory information (i.e., brightness, color, perception, contrast, etc).
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Pioneer species are the first species
to appear after a disturbance. What
is one significant characteristic of
pioneer species?
A. They are not adapted to their surroundings.
B. They are very tolerant of extreme conditions.
C. They are the end product of secondary
succession.
Help please I’m doing the test. Am I right?
What are potential solutions for the spike in human population
O educating women
O family planning (birth control)
O working women (contribute to the household income
O all the above
what was the key factor that allowed Hershey and Chase to show that DNA alone carried the genetic information of a bacteriophage?
Explanation:
DNA contains phosphorus, but protein does not. Protein contains sulfur, but DNA does not. This allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.
[tex] \mathbb \fcolorbox{green}{red}{ STAY \: STRONG}[/tex]
[tex] \mathfrak \fcolorbox{green}{red}{BE \: BRAINLY }[/tex]
In the DNA structure there is phosphorus present while protein does not contain phosphorus but it contains sulfur while DNA does not which allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.
What is Hershey and Chase experiment?Hershey-Chase experiment was the final experiment which is also called as the Waring Blender experiment. In this experiment, they showed that phages only injected their DNA into host bacteria, and that the DNA served as the replicating genetic element of phages.
They used this experiment to prove that DNA is the genetic material. [tex]T_2[/tex] Bacteriophage that was grown in isotopic medium radioactively labels a specific viral component. Two types of isotopic media were used.
Viruses that were grown in radioactive sulfur (35S) contained radiolabeled proteins.Viruses grown in radioactive phosphorus (32P) had radiolabeled DNANext, the virus was allowed to infect a bacterium (E. coli) and the virus and bacteria were then separated through centrifugation. After centrifugation, the larger bacteria formed a solid pellet, while the smaller viruses remained in the supernatant. The pellet of bacteria was found to be radioactive when infected with 32P-virus (DNA), but not with 35S-virus (protein).
This provided proof that DNA was the genetic material because DNA had been transcribed into bacteria, not proteins.
Thus, in the DNA structure there is phosphorus present while protein does not contain phosphorus but it contains sulfur while DNA does not which allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.
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