The group 2 Elements The Alkaline Earth Metals and the group 14 carbon.
Once you have the atomic number of an element you can find its period number and group number. The periodic number refers to the number of shells an electron in an element occupies, while the periodic number refers to its valence electrons. Group 14 is the carbon family. The five members are carbon silicon germanium tin and lead.
All of these elements have four electrons at their limited energy levels. Of the group 14 elements, only carbon, and silicon form bonds as electron-sharing non-metals. The carbon family is also called carbon group 14 or group IV. This family was called petrel or tetragon because the elements belonged to group IV or as a reference to the four valence electrons of the atoms of these elements. This family is also called crystallins.
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How old is Earth and when did the oxygen revolution occur?
pls help i dont get it
Smithers thinks that a special juice will increase the productivity of two groups of
50 workers. He creates two groups of 50 workers each and assigns each group
the same task (in this case, they're supposed to staple a set of papers). Group A is
given the special juice to drink while they work. Group B is not given the special
juice. After an hour, Smithers counts how many stacks of papers each group has
made. Group A made 1,587 stacks, Group B made 2,113 stacks.
Use this scenario to answer questions 1-4
1. Identify the control group
A: Group A
B: Group B
C: There is no control group
2. Identify the independent variable
a: Amount of pages stapled
b: Special Juice
c: Stapler
3. Identify the dependent variable*
a: Special Juice
b: Stapler
c: Amount of pages stapled
4. What should Smithers conclusion be?
a: Group A made 1,587 stacks and Group B made 2,113 stacks of paper therefore the special drink DID work
b :There isn't enough evidence to make a conclusion
c: Group A made 1,587 stacks and Group B made 2,113 stacks of paper therefore the special drink DID NOT work
Answer:
bbcc
Explanation:
1.)Group B wasn't given anything to effect their productivity.
2.)The special juice is not effected by other factors.
3.)The amount of pages stapled is directly affected by the special juice variable
4.)The point of the special juice was to increase productivity, since the group with the special juice was less productive than the group without it the special juice failed.
1.this part of the brain controls the beating of the heart
a.spinal cord b.cerebrum c.cerebellum d.main stem
2. tiny connections or pathways in the nervous system are called ___
a.blood cells b. neurons c.brain tissues d.tiny cells sites
3. sounds enter the ear as ___
a.vibrations b.loud c.reactions d. all of these
please help me answer this questions it’s due tomorrow 7am….
3. D
Explanation:
nice
Answer:
1(the answer is the brain stem)
2(the answer is the neurons)
3(the answer is the vibrations)
Question 3(Multiple Choice Worth 3 points)
(02.06 MC)
What best explains the relationship between photosynthesis and cellular respiration?
~ The higher the rate of formation of products in respiration, the lower the rate of photosynthesis.
~ Photosynthesis depends on the carbon dioxide released during cellular respiration.
~ Cellular respiration depends on the water released during photosynthesis.
~ They have the same set of product molecules.
Photosynthesis depends on the carbon dioxide released during cellular respiration. Option C.
Glucose is then converted to carbon dioxide and used for photosynthesis. Water is broken down into oxygen during photosynthesis, but oxygen combines with hydrogen during cellular respiration to produce water. Cellular respiration is the process by which biofuels are oxidized in the presence of inorganic electron acceptors
Most aerobic respiration with oxygen occurs in the mitochondria of cells whereas anaerobic respiration without oxygen occurs in the cytoplasm of cells. During cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as by-products. In the absence of oxygen, pyruvate undergoes a process called fermentation.
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Q1. In a sound wave what is a region of high pressure known as?
Q2.Name a wave that does not need a material to travel
Q3.Why does sound travel faster in solids as compared to liquids and faster in liquid as compared to gases?
Answer:
1. In a sound wave what is a region of high pressure known as?
These regions are known as compressions and rarefactions respectively. The compressions are regions of high air pressure while the rarefactions are regions of low air pressure.
2. Name a wave that does not need a material to travel
An electromagnetic wave can travel through anything - be it air, a solid material or vacuum. It does not need a medium to propagate or travel from one place to another.
3. Why does sound travel faster in solids as compared to liquids and faster in liquid as compared to gases?
This is because the molecules of solids are more tightly packed together than in liquids and those in liquids are more tightly packed than in gases. Vibrating effects are more easily passed on from one molecule to the next when they are in close proximity.
Explanation:
Hope it helps! =D
You are performing a dissection and have discovered a fluid vessel, but you don’t know if it is from the cardiovascular system or from the lymphatic system. Finding which of the following features will confirm that this can only be a lymph vessel?
a. The presence of valves
b. The presence of three tunics (intima, media, and externa)
c. Designed to handle low fluid pressure
d. One-way flow of fluid
e. Presence of anchoring filaments f. Connection to the heart
The following features which will confirm that this can only be a lymph vessel include the following:
c. Designed to handle low fluid pressure
d. One-way flow of fluid
f. Connection to the heart.
What is Lymphatic vessel?This is referred to as the network of capillaries and tubes which are located throughout the body and transport lymph away from tissues. they are also involved in the collection and draining of lymph and it is usually done at the node region.
This type of vessel works under low pressure and allows the flow of fluid in only one direction. This is enhanced by the presence of the semilunar valves.
It is connected to the heart as it helps drain tissue fluid in order to maintain the steady-state interstitial fluid equilibrium thereby making it the correct choice.
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An excess of carbon dioxide (CO2) in a chloroplast makes conditions there more acidic. Such a change can cause protein molecules in the cells to change shape and stop functioning. Which change is most likely to happen is a chloroplast contains to much CO2
A. A decrease in formation of chlorophyll in thylakoids
B. An increase in the amount of CO2 that the cell can absorb
C. An increase in the amount of O2 that the cell can absorb
D. A decrease in the formation of ATP by the light reactions
The change that is most likely to happen is a chloroplast contains to much carbon dioxide is decrease in the formation of ATP by the light reactions (option D).
What is the effect of excess carbon dioxide?This question is describing the process of photosynthesis, which is how green plants synthesize their food (sugar) in the chloroplast of their cells.
According to this question, too much of CO₂ will lead to the chloroplast being acidic, which will utterly cause protein molecules in the cells to change shape and stop functioning.
Enzymes that bring about the photosynthetic process in the chloroplast are composed of proteins. This means that the synthesis of ATP in the light reaction of photosynthesis will be disrupted because of deactivation of enzymes.
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Answer: A decrease in the formation of ATP by the light reactions.
Application: The enzymes in lysosomes are dangerous, and can’t be directly exposed to the cytoplasm. In the diagram
below, 7 represents a lysosome. Explain what has to happen for an enzyme to get placed inside a lysosome. Note that the
membrane (8) is not involved in this process.
First, the instructions…
Next,
After that, the smooth ER will
Following that, a vesicle will
At the Golgi,
Finally.
First, enzyme synthesis occurs following mRNA instructions. Next, enzymatic maturation occurs in the RER. After that, the SER sends enzymes and lipids to the Golgi complex into vesicles. The Golgi complex packages hydrolytic enzymes into lysosomes and sends them to thei destiny.
How are lysosomal enzymes synthesized and packaged?Let us remember that enzymes are proteins, so they follow the protein synthesis process.
1)
First, mRNA is synthesized within the nucleus by copying the DNA fragment that provides the necessary information for protein building.
2)
When mRNA leaves the nucleus forward to the cytoplasm, it meets a ribosome and starts protein-building. Ribosomes attached to the RER membrane are responsible for synthesizing membrane proteins, exportation proteins, or enzymes.
Proteins destined to become enzymes, membrane proteins, or exportation proteins start their growth in the cytoplasm, where a signal aminoacidic sequence is synthesized.
A signal-recognizing particle leads the synthesizing protein to the Rough endoplasmic reticulum. Once there, it continues protein building forward the reticulum lumen.
When the new protein synthesis is complete, the polypeptide is released into the reticulum lumen, suffering a few posterior steps related to conformation and structure.
The rough endoplasmic reticulum is in charge of protein folding to become functional, maturation, and transport. It produces the latest protein modifications after transduction and initiates the glycosylation process.
3)
Meanwhile, the smooth endoplasmic reticulum is in charge of lipid synthesis. These lipids are the ones that will compose the vesicle membranes in which proteins are packaged and the lysosome membranes.
4)
The new proteins get packaged into vesicles that carry them to the Golgi complex. Lipids are also sent to the Golgi complex.
5)
Once in the Golgi complex, occurs the final association of carbohydrates and lipids with proteins to originate glycoproteins and glycolipids.
This distribution center sends proteins to different regions in the cells. Among other functions, it concentrates and packages hydrolipic enzymes into lisosomes.
6)
Enzymes are packaged and sent from the Golgi complex to their final destiny into vesicles. Lisosomes are formed.
So, according to this sequence, we can answer the question.
First, the instructions for enzyme synthesis will be copied from DNA in the nucleus, where mRNA is synthesized.Next, mRNA will leave the nucleus. Enzymes synthesis will start in the cytosol and finish in the rough ER. The enzyme maturation stage will be completed there.
After that, the smooth ER will produce membrane lipids, and package the enzymes into vesicles.
Following that, a vesicle will reach the Golgi complex.
At the Golgi, hydrolytic enzymes will be packaged into lysosomes.
Finally, lysosomes will be released into the cytosol to accomplish their functions.
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A boxer has been jumping rope for an hour. His leg muscles are burning and
he feels weak. Which substance is the most likely cause of the burning he
feels in his muscles?
Waste products from anaerobic respiration substance is the most likely cause of the burning he feels in his muscles.
What is the muscle function?Its ability to contract is their key principle. Movement is caused by muscles that are connected with blood vessels, internal organs, or bones. Less body fat, a better immune system, more energy, less stress, and almost all bodily activity is indeed the consequence of muscle contraction.
Which body parts are muscles?An organ of the postural muscles is a whole muscle tissue. Skeletal muscle tissue, connective, nerve tissue, and blood or vascular tissue make up each organ or muscle. Size, form, and fibre arrangement in skeletal muscles vary widely.
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A habitat is ___________________.
A habitat is a natural environment where organism lives,
What is a habitat?
Habitat in simple terms is where an organism lives due to to the suitability for it to survive in that particular place. Therefore, habitat can be be classified into types, the aquatic habitat, the terrestrial habitat and the arboreal habitat.
The types of habitat are:
Aquatic habitat: are places like lakes, rivers, ponds, oceans, where where water is present and it provides shelter, food and oxygen for organisms to survive and reproduce.Terrestrial habitat: are cover by land surface. This type of habitat can be forests. deserts, mountains and grasslands.Arboreal habitat: this is home for animals that live and survive in trees.In summary, a habitat is a natural place where an organism is found, where it lives and where it thrives.
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What does the
prefix "bio" mean?
A. study of
B. biotic
C. life
D. grow
Answer:
What does bio- mean? The combining form bio– is used like a prefix meaning “life.” It is often used in scientific terms, especially in biology. The form bio– comes from Greek bíos, meaning “life.” The Latin cognate of bíos is vīta, “life,” which is the source of words such as vital.
During DNA replication, which enzyme performs each job listed below. Options for enzymes are ligase, DNA polymerase, and helicase.
Ligase is an enzyme that uses ATP to form bonds.DNA polymerase is a type of enzyme that mainly forms new copies of DNA. Helicases are enzymes that bind nucleic acid protein complexes.
DNA replication requires enzymes like DNA polymerase DNA helicase, DNA ligase. DNA ligases are crucial enzymes of DNA metabolism. The reaction they catalyze is required in DNA replication and in DNA repair pathways that require the re-synthesis of DNA. Helicases are defined as a class of enzymes that catalyze the separation of duplex nucleic acids into single strands in an ATP-dependent reaction and function in DNA modification processing.
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which system is responsible for beathing
A cell is a system of parts that work together to carry out basic life processes. An animal is also a system of parts that work together to carry out basic life processes. Match each organ or organ system with the cell part that has a similar function.
Answer:
Nucleus - brain
cell membrane - skeletal system
mitochondria - digestive system
cell wall - skin
Explanation:
hope that helps!
What are your thoughts on psychoneuroimmunology?
Answer:
Psychoneuroimmunology is the study of how your immune system and your central nervous system interact. Psychological stress makes you more susceptible to everything from the common cold to flare-ups of autoimmune diseases.
I need help please!!
1According to the periodic table, the statement that correctly describes the change from a neutral atom of an element to its ion is: a phosphorus atom forms a P ion by gaining three electrons; option D
Ions are substances that are formed when neural atoms lose or gain electrons.
There are two types of ions:
cation - these are positively charged ionsanions - these are negatively charged ionsCations are formed by the loss of electrons. Metal atoms form cations by a loss of electrons.
For example; Mg ---> Mg²⁺ + 2 e⁻
Anions are formed by a gain of electrons. Non- metals form anions by a gain of electrons.
For exmaple: Cl₂ + 2 e⁻ ---> 2 Cl⁻
Therefore, ions are formed when atoms gain or lose electrons.
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1.Photosynthesis and cellular respiration are often described in two ways: (1) they are chemically opposite; and (2) they have a relationship to each other. Explain what these two statements mean. Be sure to include the specific substances used and released by each process.Answer:I need help writing a simple and original answer.
They are chemically opposite, since one (photosynthesis) implies an anabolic metabolism. It produces sugar, from atmospheric CO2. While respiration is a catabolic process, it takes this sugar and oxidizes until it creates CO2, ¡the very essential ingredient photosynthsis needs! So, to sum up, while photosynthesis creates sugar, respiration consumes it. This has a deeper physiological meaning, because both process happen at the same time, they could be view as a worldwide ecosystemical gas atmospheric regulation. Some organisms produce sugar and release Oxygen (photosynthesis products), while others consume sugar and release CO2 (non photosynthetic organisms). Note that plants, are also capable of repiration (that is, C02 release) but this occurs at lesser extent than in animals.
what type of body is favored in hot-dry climates
High-surface-area-to-volume ration
Low-surface-area-to-volume ratio
The type of body that is favored in hot-dry climates is option A: High-surface-area-to-volume ration.
Why choose the High-surface-area-to-volume ration?Larger animals retain more body heat in cold areas because they radiate less heat per unit of mass due to their lower surface to volume ratio than smaller animals.
Note that Body heat produced by metabolism requires to be swiftly expelled rather than kept by animals living in warmer regions.
Therefore, In hot and dry regions, the increased surface-to-volume ratio of smaller animals enables heat dissipation through the skin as well as aids in bodily cooling.
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When a motor unit is sufficiently stimulated, all of the muscle fibers in that motor unit will contract?
When a motor unit is sufficiently stimulated, all of the muscle fibers in that motor unit will contract is a true statement.
What is Motor unit?They are referred to as the smallest unit of the nervous system and comprises of muscle fibers which number about one to 1000 depending on various factors.
An example of a motor unit is known as soleus which is present in the lower leg and stimulation which is sufficient will result in muscle fibers contracting and being activated. This results in the production of maximum muscle force as a result which is why true was chosen.
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The full question is:
When a motor unit is sufficiently stimulated, all of the muscle fibers in that motor unit will contract? true/false
The element which forms the backbone of all organic molecules is: PLEASE HELPPPP
Answer: Organic chemistry based on compounds in which (Carbon) is a central element. The properties of carbon make it the backbone of the organic molecules which form
Explanation: The fundamental component for all of these macromolecules is carbon. The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.
Answer: Carbon
Explanation:
How do we make room when we delete or insert a mutation in our DNA?
In a sequence alignment, we need to use a script when we delete or insert a mutation in our DNA in a nucleotide sequence.
What is a sequence alignment?A sequence alignment is an alignment between the nucleotide sequences of different but evolutionary-related organisms that allow to identify of single nucleotide polymorphisms, deletions and insertions (commonly known as indels). This alignment is denoted with a script for indels.
Therefore, we can conclude that a sequence alignment is denoted with a script of the presence of indels that evidence mutations in the nucleotide sequence between organisms.
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You know that all eleven body systems work together in the human body. What would happen if a system stopped working?
Answer: Every organ system is important for the body and if one of them stops working the entire body would collapse and be dysfunctional. After one system shuts down, the others would slowly start to shut down as well until the body can no longer maintain homeostasis and the person would slowly die.
Explanation: Some body systems work together to complete a job. For example, the respiratory and circulatory systems work together to provide the body with oxygen and to rid the body of carbon dioxide. The lungs provide a place where oxygen can reach the blood and carbon dioxide can be removed from it.
Answer:
The biological processes halt and one dies.
Explanation:
Biological operations are key to life.
How do O2 levels change during the day?
Your SpO2 may fluctuate during the day, especially when going from a low-energy state to a high-energy state. These variations, your SpO2 remains within a reasonable range, therefore there is no need for alarm.
Why are oxygen levels important?Similar to a person's blood pressure or body temperature, many people believe that an individual's oxygen level is a crucial indicator of how well their body is functioning. According to their doctor's instructions, people with lung or heart conditions can use a pulse oximeter at home to monitor their health.
What happen when oxygen level is low?You may experience headache, disorientation, or restlessness when your blood oxygen level drops below a specific point. Anemia is one of the typical causes of hypoxemia. (Acute respiratory distress syndrome)
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What is the name given to biological catalysts?
Answer:
anenzyme is a biological catalyst and is almost protein.
name three important factors that can effect the rate of photosynthesis
Answer:
light intensity, carbon dioxide concentration and temperature.
Explanation:
Which is NOT a benefit of biodiversity?
A. clean air and water
B. natural gases
C. spread of agriculture
D. food
The variety of animals, plants, fungi, and even microorganisms like bacteria that created up our natural environment exist all included in what is known as biodiversity
What is meant by biodiversity?The variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural environment are all included in what is known as biodiversity. These various species and critters collaborate in complicated web-like ecosystems to keep things in balance and support life. The systems that sustain all life on Earth, including humans, depend on biodiversity. We cannot have the healthy ecosystems that we depend on to give us the air we breathe and the food we consume without a diverse variety of animals, plants, and microorganisms. People also appreciate nature in and of itself.The first tenet of the origin of modern biodiversity was established by Charles Darwin, who postulated that all species were connected by a single, vast phylogeny, or tree of life, and that all of them could be traced back to a single, original species that existed at some remote point in the geological past.To learn more about biodiversity refer to:
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How would I fill in the Lillies and Nematodes?
A single entity has been discovered that shows many of the characteristics of living things including growth, organization, and the ability to maintain homeostasis. However, because it does not reproduce, it is not considered a living thing.
True or false
Answer: False
Explanation: Reproduction can not be considered as a describing factor of living organisms.
for example: mule is a hybrid of female horse and male donkey which is a sterile animal
similarly in case of human beings there are several couples who can not have babies but they are living organisms.
Hence, Reproduction can not be counted as a defining property of living beings
do you think that the incubation period of all the animal is same? why?
Answer:
The incubation period, the time from the start of uninterrupted incubation to the emergence of the young, varies from 11 days (some small passerines and the black-billed and yellow-billed cuckoos) to 85 days (the wandering albatross and the brown kiwi).
Calculate the population growth for the following scenario. Over the course of a year, a population of 25 penguins gained 5 penguins through births and lost 3 penguins to death. In addition, 10 adult penguins moved into the population through immigration and 6 adult penguins moved out of the population through emigration. What is the yearly growth rate of this population?
Yearly growth rate is 6.
Population increases by Birth and immigration. Population decreases by death and emigrations .so, yearly growth rate of this population from births and immigration provides the growth rate of a population over a given period of time.
Birth immigration 5+10,6+3
Yearly growth rate is 15-9=6
Population growth is the increase in the number of people in a population or dispersed group. To calculate the Population Growth (PG) we find the difference (subtract) between the initial population and the population at Time 1, then divide by the initial population and multiply by 100.
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