Answers
Answer:
3rd option...........
Related Questions
what is the energy needed to start a chemical reaction called
Answers
Activation energy
Explanation:Activation Energy is the minimum amount of energy needed to start a chemical reaction.
A chemical reaction consists of different atoms, molecules, or compounds that arrange themselves to create new compounds.The chemical reaction contains reactant molecules that produce product molecules.The minimum amount of energy that is required to start any chemical reaction is called activation energy.This is because some amount of energy is always needed to initiate the reaction whether it is exothermic or endothermic.The exothermic reaction also involves some activation energy to initiate the reaction, and later it releases this energy.Activation energy can be affected by the nature of the reactant and the effect of the catalyst.The unit of activation energy is KJ/mol.Which statement describes biological organization on a level smaller than a cell?
A. Many specialized cells come together to form a tissue.
B. Multiple organs can function together in a system.
C. Two or more tissues combine to form an organ with a specific function.
D. All living organisms are made up of organic compounds.
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Answer: B- Multiple organs can function together in a system.
Explanation: I took the quiz.
Answer: All living organisms are made up of organic compounds.
Explanation: I took the quiz and the other answer was wrong but this one was right.
what are things Animal Cells have Only
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Answer:
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation:
hope this helps :D pls mark brainliest :D
What had happened with the HeLa cells that made the Johns Hopkins researchers want to take blood and tissue samples from the Lacks family?
plzz real answers only
Answers
Answer:
HeLa cells contain rare traits that make them invaluable to scientific research. Research into the Lacks family may provide insight into this mutation and cell proliferation.
Explanation:
HeLa cells have a controversial origin, rooted in ethical breaches. They were derived from a non-consenting, female African-American donor patient, Henrietta Lacks who was terminally ill with a form of cervical cancer. These particular cells have a remarkably short period of proliferation, due to their active telomerase.
During cell division, these telomoerases were found to make repeat copies of the cell's telomere, and the cells can divide an unlimited number of times in lab cell cultures- a very rare occurrence. They were later commercialized- HeLa cells are durable, robust and commonly used in cancer cell research.
microorganisms occur everywhere in nature and have several requirements to grow. what is one of these requirements? select all that apply
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Microo rganisms occur everywhere in nature and have several requirements to grow will be food, moisture, darkness and suitable temperature.
Microorganisms can live in hott-er and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. Cellular microbes replicate a sex-ually and/or sex-ually
The smallest microorganisms, measuring between 0.0001 mm as well as 0.001 mm, were bacteria. Prot ozoa including phytoplankton have sizes ranging from 0.001 mm to 0.25 mm. The largest protozoa and phytoplankton can only be observed with the nak-ed eye. The majority are only visible under a microscope.
The question is incomplete, the complete question is:
Microorganisms occur everywhere in nature and have several requirements to grow , What is one of these requirements.
(a) food,
(b) moisture,
(c) darkness and suitable temperature.
(d) all of these
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A scientist goes on an expedition to Greenland and finds an unknown organism. She then analyzes the DNA and confirms that the strand she has contains 1000 total nitrogenous bases. She continues to analyze it further and realizes the strand has 200 adenines. She needs to determine how many cytosines exist in that sample.
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Answer:
800
Explanation:
1000-200
The number of individual organisms present in a given population at a given time is.
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Answer:
7th Science Honors Ch. 4 Vocab
A B
population size: the number of individual organisms present in a population at any given time
population density: the number of individuals in a population per unit of area
population distribution: how organisms are arranged within an area; sometimes called population dispersion.
Explanation:
jansman, a. j., verstegen, m. w., huisman, j., and van den berg, j. w. 1995. effects of hulls of faba beans (vicia faba l.) with a low or high content of condensed tannins on the apparent ileal and fecal digestibility of nutrients and the excretion of endogenous protein in ileal digesta and feces of pigs. j. anim. sci. 73:118–127.
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The effects of dietary inclusion of faba bean hulls (Vicia faba L.) with a low (.1% catechin equivalents; LT) or high tannin content on the obvious ileal and faeces digestibility of nutrients were studied in three experiments (Exp. 1, 2, and 3) with young pigs (BW 10 to 26 kg).
Faba beansAdditionally, using the 15N isotope dilution method, the actual digestibility of the meals' protein and the excretion of endogenous protein (N x 6.25) in the ileal digesta and feces of pigs were assessed.
Diets either contained casein and faba bean cotyledons as highly soluble (HS) protein sources (Exp. 1 to 3) or protein sources with a low solubility (LS), such as potato protein, soy concentrate, sunflower meal, animal meal, and fish meal.
It has been determined that faba bean condensed tannins interact with dietary and endogenous proteins in pigs' digestive systems.
As a result, less food protein is really digestible and more endogenously secreted proteins are excreted. Faba bean tannins interact with proteins more frequently than other molecules.
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28 points and brainliest hurry!!
The movement of plates at a divergent boundary-
O Move up and down
O Move away from each other
O Move towards each other
O Form mountains
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Answer:
They move away from eachother.
Explanation:
Took the test
Change in gene pool caused by movement of organisms into (increase genetic variation) or out of (decrease genetic variation) the population
Answers
Answer:
A
Explanation:
i got it right
The genetic information that moves from the nucleus to the cytoplasm of a cell during protein synthesis is called.
Answers
Help pls. I will give brainliest.
A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a _______
It's either cuticle or sufficient root
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Answer:
Sufficient root!Explanation:
took it last year
Answer:
Sufficient root.
Scientists use specific levels of organization to analyze the biosphere. which level of organization is seen in both a school of anchovies and a gaggle of geese?
Answers
Scientists use specific levels of organization to analyze the biosphere. This shows population level of organization is seen in both a school of anchovies and a gaggle of geese. The correct option is C.
What is a population?A population is a discrete assemblage of entities with identifiable characteristics, such as people or animals, with the goal of analysis and data collection.
It is made up of a similar group of species that live in a specific geographical location and have the ability to interbreed.
The population is an important factor in balancing the environment; the population should be in balance with the means and resources.
Scientists analyze the natural ecosystem using different levels of organization. This demonstrates population-level organization within both a school of anchovies and a flock of geese.
Thus, the correct option is C.
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As a responsible citizen and future taxpayer, what concerns would you have about switching from a traditional fossil fuel-based to a biomass-based energy source for your community? Think about environmental, economic, and societal concerns.
ILL GIVE BRAINLIEST
Answers
wang bh, campbell g (2009) formulations of polyvinyl alcohol cryogel that mimic the biomechanical properties of soft tissues in the natural lumbar intervertebral disc. spine 34:2745–2753
Answers
Wang bh, campbell g (2009) formulations of polyvinyl alcohol cryogel that mimic the biomechanical properties of soft tissues in the natural lumbar intervertebral disc. spine 34:2745–2753
Current lumbar intervertebral disc prostheses gives suboptimal symptom relief and do not restore natural load-cushioning.
PVA-C is a likely material due to its high water capacity , excellent biocompatibility, and cosmopolitan mechanical properties. PVA-C samples were made with different PVA concentrations and number of freeze thaw cycles (FTC). Unconfined concretion was conducted to characterize various PVA-C formulations. concretive stress relaxation and creep were performed to evaluate the stability of PVA-C under stress. The results were distinguised to the mechanical properties of human lumbar intervertebral discs obtained from literature.PVA-C compressive elastic modulus jumped with elevating PVA concentration and no. of FTC's. The 3% 3FTC is the best formulation for mimicking the nucleus pulposus in concretion .
In general, concretive stress relaxation and creep falllen with elevated PVA concentration and no. of FTC's. concretive stress relaxation and creep were lower for PVA-C than human lumbar intervertebral discs, proposed that PVA-C will mostly exhibit stable and affirmable mechanical response in vivo.
All formulations furnished good mimicry of the human IVD in stress relaxation and creep. PVA-C also furnished good match to the anulus fibrosus matrix.
Good unimprisoned compression, stress releasing and creep behavior, summed with excellent biocompatibility, makes PVA-C a suitable choice as a major component of a tissue-mimicking artificial IVD.
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Explain the role of lipids, carbohydrates, and proteins in the cell membrane.
Ready? Enter your answer here.
III
Answers
Lipids provide structure - allow the selective diffusion. Proteins provide structure - involved transport - involved in cell adhesion. Carbohydrates are involved in cell recognition - receptor complexes.
What is the function of lipids, carbohydrates, and proteins in the cell membrane?The cell membrane is composed of a lipidic bilayer, cholesterol, proteins, and glucans incrusted in between.
⇒ Lipids
Phospholipids are amphipathic molecules.They have hydrophilic heads facing the exterior and the interior of the cells and hydrophobic tails that arrange against each other in the interlayer space.Lipids can easily change places with other lipids by lateral diffusion and transversal diffusion. Their function is to provide structure to the membrane and allow the diffusion of some selected small molecules.⇒ Cholesterol
These lipidic molecules play a significant role in membrane formation and structure. They are embedded in the membrane in between phospholipidic tails.
⇒ Carbohydrates
Carbohydrates are significant energy store molecules.
Carbohydrates get attached to lipids and proteins on the outer side of the membrane (glycolipids and glycoproteins).
Complexes protein-carbohydrate are used to identify and differentiate the cell and work as receptors.
Carbohydrates are also involved in cell adhesion.
⇒ Proteins
Among the proteins, we can find integral proteins and peripheric proteins.Integral proteins are permanently associated with the membrane. They accomplish many different functions such as substances transport, cellular receptors, and cellular adhesion, among others.
According to how they are incrusted in the lipidic bilayer, integral proteins might be,
→ Transmembrane proteins ⇒ they cross the two lipid layers of the cell membrane.
→ Monotypic integral proteins ⇒ they can be found tied to one of the lipidic layers.
Integral proteins provide structure to the plasmatic membrane.
Periferic proteins are in the internal or external surface but not incrusted in the membrane.
In conlusion,
Phospholipids are the basic elements of the cell membrane. They are arranged in two layers, and thanks to their motion properties, they allow passive transport (diffusion) of some substances.Proteins provide structure, are involved in facilitated and active transport, and are involved in cell adhesion. Carbohydrates are involved in cell recognition and in receptor complexes.You can learn more about membrane composition at
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Two Questions! Will give brainliest!
What does the law of superposition tell about the relative ages of rocks?
That the deeper you go into rock layers, the older the rocks are
that the deeper you go into rock layers, the younger the rocks are
that the oldest rock layer is always on top
that the oldest rock layer is always undisturbed
•
After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap, in the geologic record?
An earthquake or motion along a fault
new sediment deposits build up on the eroded area
radioactive decay along a fault
avolcanic eruption near the eroded area
Answers
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Water is so common, that it often is taken for granted. But as we’ve learned, it is a
remarkable molecule that is essential to life. And it is the unique properties of water that allow life on the planet to exist. Most people on this planet don’t know of water uniqueness and life-permitting properties. That needs to change!
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Answer: Because ignorance water is misused
Explanation:
Are gender traits completely a result of societal expectations? Justify your answer.
Answers
Answer:
No. Gender traits in humans are largely determined by biophysical processes.
Explanation:
There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary. But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to. This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development.
the effect of phacoemulsification on intraocular pressure in eyes with preexisting glaucoma drainage implants
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At the first postoperative week after GDI surgery, phacoemulsification caused a momentary decrease in IOP.
What is Glaucoma?A series of eye conditions known as glaucoma induce damage to the optic nerve and vision loss. The drainage angle for fluid within the eye is left open in open-angle (wide angle, chronic simple) glaucoma, which is the most prevalent kind. Normal-tension glaucoma and closed-angle glaucoma are less prevalent varieties. Open-angle glaucoma doesn't hurt and develops gradually over time.
If untreated, peripheral vision may start to deteriorate, accompanied by central vision, and could eventually lead to blindness. A fast or gradual onset of closed-angle glaucoma is possible. Severe eye pain, hazy vision, a mid-dilated pupil, eye redness, and nausea may all be present suddenly. Glaucoma causes persistent vision loss once it has already started. Glaucomatous eyes are referred to as
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which element is always present in proteins
Answers
Answer:
Carbon (C)Hydrogen (H)Oxygen (O)Hydrocarbonyl elements
Explanation:
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why are some ions known as polyatomic ions?
Answers
Answer:
because a polyatomic ion is just a regular ion except it contains more then one atom
Explanation:
What is produced during the light-independent reactions of photosynthesis?
Answers
Answer:
Light-independent reaction is a series of biochemical reactions in photosynthesis not requiring light to proceed, and ultimately produce organic molecules from carbon dioxide. The energy released from ATP (produced during the light reactions) drives this metabolic pathway.27-Jan-2022
Purpose: Utilize stored chemical energy for carbon dioxide fixation and form glucose ...
Site of Reaction: Stroma of Chloroplast
Input: ATP, NADPH, CO2
Output: G3P, ADP, NADP+
Why are sex linked disorders most often seen in males
Answers
Polaris is one of the brightest stars in the sky and is the brightest star in the constellation Ursa Minor. It is very close to the northern celestial pole, and Polaris is often referred to as the Northern Star. Polaris is estimated to be approximately 46 times larger than the Sun. Why does Polaris appear to be so much smaller than the Sun to the human eye?
A) The Sun is a brigher star than Polaris.
B) The distance from Earth to Polaris is much greater than from Earth to the Sun.
C) The Sun is actually made of many different stars, giving it the appearance of being big.
D) The light from the Sun is spread out in our atmosphere, giving it the appearance of being large.
Answers
Answer:
B.
Explanation:
Hope This Helps!
Answer:
b
Explanation:
Which statement best describes an environmental consequence of sustainable v
O Incinerators release fewer emissions into the atmosphere.
O Transporting waste to other countries saves land for housing.
O Ecosystems are saved when less land is used for landfills.
Sealed landfills can be capped for methane gas use.
Answers
Transporting waste to other countries saves land for housing statement best describes an environmental consequence of sustainable waste management.
Sustainable waste management strives to reduce the quantity of solid waste that's also disposed of in landfills or by incineration. Materials are kept in use for as long as feasible.
In addition to promoting a healthy natural environment that benefits both people and animals, sustainable waste management is essential to releasing precious land from landfills, enhancing energy production, creating jobs, and lowering the price of logistics and transportation.
Not only would reducing trash benefit the environment, but it will also save money or lower disposal costs.
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Suppose that the oil pipeline will be built through the middle of the area and caribou will not be able to go under it or jump over it. predict what might happen to the caribou and tell me why
Answers
The number of variables and the number of observations of caribou contacts with raised pipe are currently too great to allow any generalizations about the impact on caribou mobility.
which problem affected CARIBOU in the THE TRANS-ALASKA PIPELINE ?The trans-Alaska oil pipeline building could have an impact on caribou behavior and seasonal movements, according to research conducted by the Alaska Department of Fish and Game since July 1974. The Beaufort Sea's coast to the north, the Brooks Range's crest to the south, and the Canning and Colville rivers to the east and west, respectively, roughly define the research area's boundaries. The study region is roughly divided in half by the Trans-Alaska pipeline and its accompanying haul route.There are four sections of around 125 km of raised pipe between Purdhoe Bay and Galbraith Lake Camp, making up 51% of the entire pipe length on the arctic slope.To learn more about CARIBOU THE TRANS-ALASKA PIPELINE refer:
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Trees that grow in a forest tend to grow very tall, with few branches. The same species of tree grown in an open area tends to grow shorter and wider, with many branches. The stimulus responsible for these different growth patterns is the amount of
wind striking the tree
⊝
light reaching the tree
⊝
nutrients in the soil
⊝
water in the ground
⊝
Which one is it?
Answers
Answer:
The correct answer is A) light reaching the tree
Explanation:
In a forest, there are lots of trees and they are all competing for sunlight so they are forced to focus all their energy on growing taller so they don't get stuck in the shadow of another tree, however, the trees that grow in a large, open area have little to no competition for sunlight, so they can relax and spread out their branches because there's lots of room.
Light, water, and nutrients play a crucial role in the adaptation and evolution of species. The trees of the same species will be taller in the forests, whereas in the open grasslands the height of the trees will be short.
The correct answer is:
Option B. Light reaching the trees
The light plays a crucial role in the height of trees as:
1. Light is essential for the survival of trees. In a forest, a large number of organisms are present, which fight for shelter, food, and light. Thus, to achieve more light, trees are taller.
2. In open grasslands, the trees are shorter and wider, because they do not have neighboring trees that fight for light and water.
Thus, the correct answer is Option B.
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Transmembrane proteins assist passive transport of substances that cannot cross the lipid bilayer on their own down their concentration gradient. True or false?.
Answers
It is true that transmembrane proteins assist passive transport of substances that cannot cross the lipid bilayer on their own down their concentration gradient
The passive movement of molecules over a concentration gradient is referred to as facilitated diffusion. It is a selective mechanism in which only certain molecules and ions may flow through the membrane. Other molecules, however, are prevented from flowing through the membrane. The electric charge and pH both aid in membrane diffusion. The plasma membrane regulates the passage of chemicals into and out of the cell by being selectively permeable. This is accomplished by the active or passive transport of chemicals. It is required for the transport of vital substances like as glucose, proteins, minerals, and gases. Temperature, concentration, diffusion distance, and molecule size all influence facilitated diffusion.
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The total amount of living tissue within given topics level is called
Answers
Answer: The answer is "biomass".
Explanation: yes