Explanation:
The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. It is one of the four valves of the heart and one of the two semilunar valves, the other being the aortic valve. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the pulmonary artery. At the end of ventricular systole, when the pressure in the right ventricle falls rapidly, the pressure in the pulmonary artery will close the pulmonary valve.
Help this is due in an hour
Answer:
Chloroplasts absorb sunlight and store chemical energy
Explanation:
The chloroplasts capture sunlight and store energy
Why do Mitochondria and Chloroplasts have their own DNA?
Answer: To allow regulation of trans-membrane electron transport at the cell's energy barrier, genes in mitochondria and chloroplasts are co-located with their gene products.
Explanation:
Which molecule supplies chlorophyll with electrons
In light reactions, a molecule of chlorophyll absorbs one photon of light, causing a chlorophyll electron to transfer to a higher energy level. The energized electrons from the chlorophyll molecules flow down a transportation chain to a compound called nicotinamide adenine dinucleotide phosphate or NADP.
▪▪▪Cutest Ghost▪▪▪Water is the molecule that supplies chlorophyll with electrons.
What happens during photosynthesis?Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose (sugar) and other carbohydrates. This process also produces oxygen as a byproduct.
During the process of photosynthesis, chlorophyll absorbs light energy, which is used to split water molecules into oxygen and hydrogen atoms. The hydrogen atoms are then used to generate ATP and NADPH, which are used to power the process of carbon fixation. The oxygen atoms are released as a byproduct of water splitting and become a part of the oxygen in the Earth's atmosphere.
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What determines cell differentiation once gene regulation has taken place?
A.
proteins
B.
adenosine triphosphates
C.
mitochondria
D.
fluids
pls helppp
Answer:
A. Proteins
[Hope this helped, good luck!]
ASAP HELP 100 POINTS + BRAINLEY 2. Write 1–2 paragraphs that summarize how spectroscopy provides information about the composition of objects. Use data from the lab to support claims you make, and provide compelling reasoning. Make an effort touse proper writing conventions in your summary (such as good punctuation, spelling, and capitalization)
Answer:
Spectroscopy is the study of the interaction between matter and electromagnetic radiation as a function of the wavelength or frequency of the radiation. Simply, spectroscopy is the study of color as generalized from visible light to all bands of the electromagnetic spectrum; historically, spectroscopy originated as the study of the wavelength dependence of the absorption by the gas phase matter of visible light dispersed by a prism. Matter waves and acoustic waves can also be considered forms of radiative energy, recently gravitational waves have been associated with a spectral signature in the context of the Laser Interferometer Gravitational-Wave Observatory as well. Spectroscopy, primarily in the electromagnetic spectrum, is a fundamental exploratory tool in the fields of physics, chemistry, and astronomy, allowing the composition, physical structure and electronic structure of matter to be investigated at the atomic, molecular and macro scale, and over astronomical distances.
The spectrum is determined by measuring changes in the intensity or frequency of this energy. The types of radiative energy studied include: Electromagnetic radiation was the first source of energy used for spectroscopic studies. Techniques that employ electromagnetic radiation are typically classified by the wavelength region of the spectrum and include microwave, terahertz, infrared, near-infrared, ultraviolet-visible, x-ray, and gamma spectroscopy. Dynamic mechanical analysis can be employed to radiating energy, similar to acoustic waves, to solid materials. The types of spectroscopy also can be distinguished by the nature of the interaction between the energy and the material example:Absorption- when energy from the radiative source is absorbed by the material. Elastic scattering and reflection spectroscopy determine how incident radiation is reflected or scattered by a material. Crystallography employs the scattering of high energy radiation, to examine the arrangement of atoms in proteins and solid crystals. Coherent or resonance spectroscopy are techniques where the radiative energy couples two quantum states of the material in a coherent interaction that is sustained by a radiating field. Spectroscopic studies are designed so that the radiant energy interacts with specific types of matter.
what characteristics do all prokaryotes have in common
Answer:
All prokaryotes have plasma membranes, cytoplasm, ribosomes, a cell wall, DNA, and lack membrane-bound organelles.
Help me I need this done by the end of the class if you are a bot you will get your answer kicked so stop
Answer:
1. In the natural carbon cycle, there are two main processes which occur: photosynthesis and metabolism. During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product.
2. When fossil fuels are burned, they release carbon dioxide and other greenhouse gases, which in turn trap heat in our atmosphere, making them the primary contributors to global warming and climate change.
3. it Disrupts the nitrogen cycle by contaminating the groundwater and making it more difficult for the plants to absorb the nitrogen and causes the phosphorus cycle to accelerate, resulting in an excess of phosphorus in water and soil.
4. The phosphorous cycle is slower than carbon cycle and nitrogen cycle because phosphorous is found mainly in very small dust particles. It moves very slowly from the deposits on land and in sediments and then it is transferred to the organism and from organism it is moved more slowly to the soil.
how are the purposes of the digestive system and circulatory system linked?
Answer:
Explanation:
) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).
Which of these is an example of a chemical change?
O A. Dissolving salt in water
O B. Melting loe
OC. Breakina tree branch
D. Burning a piece of wood
Why is mucus and cilia first line defense?
Answer:
the cluos in the cilia
Explanation:
it helps for you
A frog cannot be kept in the class pisces. Why?
Answer:
The frog belongs to the class amphibia, which live both on water and land.
Explanation:
Frogs spend part of their lives underwater and part on land.
Answer:
a frog is not only aquatic but also a terrestrial animal therefore it is placed in the class of amphabia and not pisces#thatstherightanswer
hope na naktulong akoThe normal body temperature of an adult human is between 36.1°C and 37.2°C. The normal body temperature of an adult chicken is between 40.6°C and 41.7°C. Based on this information, do you think most human enzymes and chicken enzymes have identical structures? Explain why or why not.
Answer:
Almost 60% of chicken genes correspond to a similar human gene. Although, researchers uncovered more small sequence differences between corresponding pairs of chicken and human genes, which are 75% identical on average, than between rodent and human gene pairs, which are 88% identical on average
Explanation:
if a multicellular animal lacks true tissues, then it can properly be included among the
Answer:
Sponges
Explanation:
6. The thick rigid layer that surrounds plant cells and provides support and structure is called the:
(a) Nucleus
(b)Mitochondria
(c) Cell wall
(d)Chloroplast
Answer:
C. Cell wall
Explanation:
The cell wall gives the cell its structure and protection. It also provides support to the cell by making sure nothing happens to it, and it is considered the outer layer of the cell and the layer is very thick and rigid.
Give me 20 facts about the documentary Super Size Me 2
Answer:
Its about fast food. Its in America. Its also about how Americans are usually overweight. The main character is a guy. The logo is a guy eating chicken. Its also called: Holy chicken! The guy eats fast food a lot. Morgan is 50. He has dirty blonde hair.
Explanation:
Thats all I have
¿Cuáles son las funciones vitales que realiza la célula y por qué son importantes?
Doy corono
Es la criatura viviente más simple que se conoce, lo que significa que es capaz de realizar las tres funciones vitales, que son la nutrición, la interacción y la reproducción. Consta de dos partes que son la membrana plasmática y el citoplasma.
Proporcionan estructura al cuerpo, ingieren nutrientes de los alimentos, convierten esos nutrientes en energía y realizan funciones especializadas. Las células también contienen el material hereditario del cuerpo y pueden hacer copias de sí mismas. Las celdas tienen muchas partes, cada una con una función diferente.
which tiny structures help the paramecium to move around
Answer:´´Their bodies are covered in cilia,¨ or short hairy protrusions¨
Explanation:
Answer:
Cilia are the ones that allow locomotion in paramecium.
Short and tiny protrusions found all over their bodies.
Is the following sentence true or false? As a cell gets larger, it takes longer
for a molecule that has entered the cell to reach the middle of the cell.
Answer:
true
Explanation:
hope it helpsssssss
Answer:
true
Explanation:
because if larger the molecules will travel much longer to get to the center
what’s the correct answer?
bio
Answer:
It is a type of homogenous mixture.
Explanation:
The skeletal system stores minerals and maintains mineral
a purity
b structure
C homeostasis
D surfaces
Answer:
C homeostasis
Explanation:
what types of proteins are not synthesized in the rough er?
Answer:
Explanation:
Mitochondrial proteins
which type of cell produces new bone tissue by secreting matrix?
Answer:
Osteoblast
Explanation:
please help me.
thank you in advance
Answer:
At the edge of tectonic plates
Explanation:
An earthquake is typically caused by the collisions of tectonic plates, so they are more common at the plates' edges.
what is the name used to refer to the clogged xylem tissue?
The name used to refer to the clogged xylem tissue is heartwood in contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood has been the tree as the main column of support.
What is xylem?Xylem has been defined as the vascular bundle which has been used to transport water and other minerals from the root part to other parts of the plant. The main function of the xylem and phloem is to transport water and minerals from root to other parts of the plant.
The last common ancestor of the gymnosperms and angiosperms possessed the same characters such as the pollen, seeds, and the vascular tissue.The gymnosperms are a group of plant that are known as seed- producing plants such as Ginkgo, gnetophytes, cycads etc.
Angiosperms has been the plant that produces flowers and having seeds enclosed within their fruit. Gymnosperms have no production of flowers and fruits and they contain bare seeds on the surface of their leaves.
Therefore, The name used to refer to the clogged xylem tissue is heartwood in contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood has been the tree as the main column of support.
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an organism that captures and consumes another organisms for nourishment is called an?
Answer:
The organism is called a predator and the organism captured, a prey.
Answer:
predation I think
Explanation:
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Explain why a person can survive if they exclusively eating a protein diet. What are the hazards if any?
Answer:
Risks of high protein diet
Explanation:
Some high-protein diets include foods such as red meat and full-fat dairy products, which may increase your risk of heart disease. A high-protein diet may worsen kidney function in people with kidney disease because your body may have trouble eliminating all the waste products of protein metabolism.
what is the difference between a joint and a fault?
Answer:
Fractures include joints and flaws. A joint is a fracture along which there has been no movement, which is generally generated by tensional pressures. A fault is a fracture or break in the rock that has allowed movement to occur. Near faults, more earthquakes are likely to occur.
ecosystem with same climate and similar communities
Answer:
A biome is a group of ecosystems that have the same climate and similar dominant communities
Which of the following correctly describes how the chemical equation for cellular respiration would differ from a chemical equation for photosynthesis?
Answer:
Uh not seeing an option but I hope this helps
The products of one process are the reactants of the other. Notice that the equation for cellular respiration is the direct opposite of photosynthesis: Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O. Photosynthesis: 6CO2 + 6H2O → C6H12O6+ 6O.
tumors can coerce the formation of blood vessels to serve the cancer cells within the tissue. what is this process called?
Answer:
Such tumors, unless they secrete hormones, cause few problems. However, most tumors induce the formation of new blood vessels that invade the tumor and nourish it, a process called angiogenesis.
Explanation: