Answers
Answer:
vein
Explanation:
carries blood vessels with no oxygen to the heart to get oxygen.
Related Questions
What is the same about the 4 nucleotides?
Answers
Pyrimidines: Cytosine and Thymine each have a single six-member ring. Purines: Guanine and Adenine each have a double ring made up of a five-atom ring attached by one side to a six-atom ring.
Answer:
Nucleotides in DNA contain four different nitrogenous bases: Thymine, Cytosine, Adenine, or Guanine. ... Pyrimidines: Cytosine and Thymine each have a single six-member ring. Purines: Guanine and Adenine each have a double ring made up of a five-atom ring attached by one side to a six-atom ring.
EASY QUESTION HELP ME HELP ME
What characteristics are shared by both the turtle and the leopard?
Answers
Answer:
four walking legs
Explanation:
How biology
is related to physics
Answers
Answer:
Because they both are about life and include some math
Explanation:
Answer:
Biology is the study of living organisms. Physics is the study of matter and the laws of nature to understand the behavior of matter and the universe.
Explanation:
The Biophysical Society explains that, when scientists combine physics and biology, they learn more about biological systems on a molecular or atomic level.
Hope this helps :)
Constructing a Device to Regulate the
Release of Energy - Student Guide
Assignment Summary
In this project, you will design, construct, test, and modify a device that releases thermal energy by
chemical processes. You will be provided specific materials by your instructor, and will use these
materials to design a device that releases energy to the environment. Next, you will build the device and
test it by gathering temperature data. Finally, you will use your data to evaluate the design and decide
how to improve your device.
Answers
Answer:
Thermal Energy and Chemical Reactions
The device controlled the activation as shown by the water holding room temperature for 15 seconds until activation by crushing the pills. The temperature rose 30° over two minutes,showing a measurable exothermic reaction from the Calcium Chloride dissolving in the water.
Pour 5mL water in a quart bag
Place Thermometer in the bag to make contact
Fill two gelatin 000 capsules with 1 gram of Calcium Chloride
Place capsules into the bag
Wait 15 seconds to crush the capsules while they are submerged in the water
-Temperature
0 seconds 75 degrees
15 seconds - Activation 75 degrees
30 seconds 85 degrees
60 seconds 95 degrees
90 seconds 104 degrees
120 seconds 105 degrees
Conclusion: During a reaction, thermal energy from the environment is converted into chemical energy stored in the products.
Answer:
Thermal energies & Chemical reactions
Explanation:
Thermal Energy and Chemical Reactions
The device controlled the activation as shown by the water holding room temperature for 15 seconds until activation by crushing the pills. The temperature rose 30° over two minutes,showing a measurable exothermic reaction from the Calcium Chloride dissolving in the water.
Pour 5mL water in a quart bag
Place Thermometer in the bag to make contact
Fill two gelatin 000 capsules with 1 gram of Calcium Chloride
Place capsules into the bag
Wait 15 seconds to crush the capsules while they are submerged in the water
-Temperature
0 seconds 75 degrees
15 seconds - Activation 75 degrees
30 seconds 85 degrees
60 seconds 95 degrees
90 seconds 104 degrees
120 seconds 105 degrees
Final Conclusion: During a reaction, thermal energy from the environment is converted into chemical energy stored in the products.
A person who is optimistic:
O A. will make more money.
O B. believes that others control his or her fate. .
O C. will have successful relationships.
O D. will be healthier.
Answers
Answer:A
Explanation:
because optimistic people are confident about their future
Optimistic people believe that they will make more money. Therefore, option A is correct.
What is an optimistic person?A person who is very confident and hopeful about his future and hopes for good outcomes is known as an optimistic person. They have faith in themselves and believe that they have the skills to make everything good. Optimists are happier than pessimists.
An optimistic person sees the positive side of everything. They believe their faith is in their own hands, and no one can control it. Their point of view is always positive. There are two types of optimistic people and that are comparative optimism and nihilistic optimism.
They believe that they will be successful and make more money in the future. Therefore, option A is correct.
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summarize how small, nonpolar molecules enter and leave the cell (and why).
Answers
Answer:
Small, nonpolar molecules (ex: oxygen and carbon dioxide) can pass through the lipid bilayer and do so by squeezing through the phospholipid bilayers. They don't need proteins for transport and can diffuse across quickly.
Explanation:
The channel proteins act like doors through the cell membrane.
They allow large polar molecules to move in and out of the cell.
The process is called passive diffusion or passive transport, because it does not need energy.
Sometimes the protein changes shape to help the polar molecules move through the channel.
It often uses a gated pore mechanism, in which the channel is never completely open.
why do plant need food
Answers
Answer:
They need food in order to gain the initial energy they need.
Explanation:
Plants unlike humans don't get food by primary sources (aka, hunting). instead they retrieve their food from the suns rays. Without the suns rays they are able to convert this energy into glucose for themselves, and will essentially die because they do not have that source of food to give them the energy they need to survive.
What are the molecules called that react with enzymes?
Please help.
Answers
I LOVE YOU SO MUCH AND HAVE A GREAT DAYYY!!!
can someone please help me convince my biological mother to let me on testosterone....ive been out for 4 years and am 17 and she still wont allow it.....
Answers
Answer:Try explaining to her why you want or need them,try explaining what’s going on in your brain and what your feeling.
i have a best friend who does and he has become way happier since he’s out!!
What is a cell theory
Answers
Which of the following is associated with infant mortality rates?
A Conflict, including war
B Cultural beliefs
C Hygiene and sanitation
D Religious beliefs
Answers
The non-living parts of an organism's habitat are called...
Answers
Answer:
Abiotic Factors
Explanation:
These are the nonliving parts of an organism's habitat.
Urey and miller cooked a "primordial soup" with Hadean gases, water snd electricity to make _____,_____,_____ and_____
Answers
Answer:
Urey and miller cooked a "primordial soup" with Hadean gases, water and electricity to make glucose, acetic acid, amino acids and lipids.
Explanation:
In the Miller-Urey experiment, the aim was to reproduce the conditions of the earth before the existence of life, with the objective of demonstrating the formation of organic matter from inorganic molecules.
The scientists took water and gases present in the Hadean eon —previous to the existence of life— such as methane, carbon dioxide, hydrogen, nitrogen and even ammonia, the primordial soup. This mixture was subjected to electrical discharges, inside closed containers.
The results were some organic molecules, including glucose, acetic acid, amino acids and fatty acids. In these results the presence of macromolecules, such as proteins or nucleic acids, is not appreciated, however it was a significant contribution to the knowledge of the origin of life on earth.
Which of the following categories of ecosystem services allows us to make medicine from a rare plant grown in Chile?
Answers
Answer:
The answer is Provisioning
Explanation:
A provisioning service is any type of benefit to people that can be extracted from nature. Along with food, other types of provisioning services include drinking water, timber, wood fuel, natural gas, oils, plants that can be made into clothes and other materials, and medicinal benefits. and the question is about making medicine from plants.
Select the correct location on the image.
This diagram shows the functions of different enzymes during DNA replication. Which label would change if this process took place in aprokaryotic cell?
Answers
Answer:
DNA ligase
Explanation:
Answer: The nucleus
Explanation: I got it right on the test.
what natural causes destroy ponds
Answers
Answer:
invasive species
Answer:
In the explanation. :)
Explanation:
The water in a pond must remain clean if it is to provide a healthy environment for the organisms (animals and plants) living in it. The natural waste from the living and dead organisms is ‘recycled’ by special tiny organisms called bacteria. Plenty of oxygen is needed for the bacteria to ‘break down’ the waste. The pond can take care of its own waste – it’s people who cause pollution!
The most noticeable kind of pollution is the dumping of rubbish – anything from old cars and drinks cans to bikes and bottles have been found cluttering up ponds. This not only makes the environment look so unsightly but it may also destroy pond-life.
Perhaps the most serious threat to ponds is chemical pollution as a result of modern farming methods. Over the years fields have been sprayed with pesticides to rid the crops of pests. However, rain often washes the excess chemicals off the crops into nearby ponds, streams or rivers, poisoning some of the animals living there. Fortunately, these poisonous chemicals are not used so freely now and, hopefully, this problem will gradually be reduced.
Another, equally serious, problem connected with agriculture is the use of artificial fertilizers. Powdery chemical fertilizers, containing nitrates, are put on the crops to help their growth but they can also be washed off by rain into nearby ponds. They do not poison the wildlife but the rich supply of nitrogen causes the water plants, especially algae, to grow very quickly. The plants use up so much oxygen during the night and during decaying processes that there is none left for the other pond-life. The growth also prevents sunlight reaching the organisms below. Eventually, all the algae die leaving a smelly, decaying mass. The case of excess nitrates in water is called eutrophication.
Hope this helps. Have a great day!
Water makes up a large percentage of the body’s cells. For a cell to remain in homeostasis, there must be a mechanism to control water changes in the cells. The movement of water from an area of high water concentration to an area of low water concentration is
A.Diffsion
B.stable transport
C.Active transport
D.Osmosis
Answers
Answer:
osmosis
Explanation:
on edge2020
The movement of water from an area of high water concentration to an area of low water concentration is called as Osmosis. Thus option D is correct.
What is osmosis ?The process in which solvent molecules pass from a lower concentration based solution to a higher concentration solution through a semipermeable membrane called as osmosis.
It is a passive process as no external energy is needed.
When a living plant cell kept in a sugar or salt solution, water diffuses from the cell sap out through the cell membrane called as ex-osmosis.
The cell causes shrinkage of the protoplasm due to water loss, where the cell undergo a condition called as plasmolysis or necrosis.
When the plasmolysed cell is placed in distilled water, the cell regains it’s turgidity and also the original shape and size by a process called endosmosis.
This condition is called deplasmolysis or cytolysis. Thus option D is correct.
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You state that the presence of water could accelerate the growth of bread mold. is this a
a)conclusion
b)analysis
c)hypothesis
d)experiment
Answers
Answer:
C. Hypothesis
Explanation:
What are the genotypes of the F1 parent plants?
Answers
HELPPP!!!Ill give you a 5 star rating and a heart!
Answers
Which two species are most closely related?
Answers
Answer:
Two species (B & C) are more closely related to one another than either one is to a third species (A) if, and only if, they share a more recent common ancestor with one another (at Time 2) than they do with the third species (at Time 1).
Explanation:
B and C species are closely related in this phylogenetic tree. A diagram that shows the evolutionary relationships between different species or groups of animals is called a phylogenetic tree.
By showing the branching points where species diverged from a common ancestor, it exemplifies the shared ancestry and evolutionary history of species. The arrangement of species on branches that have a recent common ancestor reflects the degree of relatedness between organisms.
Closely related species tend to cluster together on such branches. Phylogenetic trees are constructed based on similarities and differences in genetic structure, physical characteristics, or other traits observed in different animals. They are important tools in the discipline of evolutionary biology to study patterns of variation and the development of life on Earth.
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Which of the following is NOT a characteristic of active transport? *
A)It moves substances against a concentration gradient
B)It requires energy from the cell
C)It involves facilitated diffusion
D)It may use carrier proteins that often function as the sodium potassium pump
Answers
Answer:
It involves facilitated diffusion.
Explanation:
Facilitated diffusion uses channel proteins. Channel proteins allow substances to travel through a membrane going with the gradient. Since active transport goes against the gradient, facilitated diffusion would not be a characteristic of it.
describe one of the interactions between the four major earth systems
Answers
Answer:
Explanation: Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
The water cycle is one of the interactions that significantly occurs between all four major earth systems. These systems are also known as spheres.
What are the four major earth systems?The four major earth systems include the lithosphere which deals with the land, the hydrosphere which linked all sorts of water on the earth's surface, the atmosphere which is associated with the presence of air, and the biosphere where life exists and living organisms live in order to play their functional role.
According to the context of this question, each and every biogeochemical cycle like the water cycle, carbon cycle, etc. process with the successful interaction of all these earth systems.
This is because these cycles include all kinds of products that are derived directly or indirectly from these spheres. For example, the gaseous form of water is present in the atmosphere while its liquid state is present in biospheres.
Therefore, the water cycle is one of the interactions that significantly occurs between all four major earth systems.
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helpppp!!!!!! i need this answer now
Why is a solution not a pure substance?
A. The solute and solvent cannot be separated.
B. It is made up of one substance.
C. It is a mixture between a solute and solvent.
D. It is made up of two substances that are chemically combined.
Answers
Answer: C. It is a mixture between a solute and solvent.
Hope this helped!
Answer:A
Explanation:
The enzyme maltase will break down the sugar maltose into which of the following components?
Answers
Answer:
Hsksjks
Explanation:
Jsksjsossjs
Consider the plant cells in the image below.
Х
Which is a function of the cell structure that is labeled X?
Answers
Answer:
It is cell wall and it provides support to the plant cell
Answer:It provides support.
Explanation:
so it things cant get in or out
The variety of life within a particular habitat, often measured by
the number of different species is known as
Answers
Answer:
"Biodiversity" would be the appropriate response.
Explanation:
Biodiversity, sometimes referred to as biological diversity, is the spectrum of organisms occurring on Earth although, occasionally, the entire range of life on Earth. The accumulation of species through a region is a general indicator of this diversity, considered species prevalence. Throughout ecosystems, like something from an intricate network, almost all of these plants or animals helping to maintain equilibrium and sustain life.Which of the following is NOT a type of neuron?
multipolar
unipolar
apolar
bipolar
Answers
Answer:
i think the answer is bipolar
1) Which of the following statements is TRUE with regard to the human hand?
a) There are 5 carpals, 8 metacarpals and 14 phalanges.
b) There are 8 carpals, 6 metacarpals and 14 phalanges
c) There are 8 carpals, 5 metacarpals and 15 phalanges
d) There are 8 carpals, 5 metacarpals and 14 phalanges
e) There are 5 carpals, 8 metacarpals and 15 phalanges
Answers
Carpal bones are bones of the human hand and consists of eight wrist bones which connects hand to the forearm. The Wrist is known as carpus and is the sole cluster of bones.
These bones don't belong to fingers and are labeled in alphabetical order from A to H. The metacarpals are thin and long bones that are connected by carpal bones in the wrist and the phalanges. They all are made of a base, shaft, and head. The first metacarpal is the thickest and shortest of them all. The phalanges are tubular ones in the thumb and the fingers found in the foot.They consist of proximal, distal, and middle phalanx. hence fourteen in total.Hence the option D is correct that is 8 carpals, 5 metacarpals, and 14 phalanges.
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How often do spring and neap tides occur?
twice a day
twice a month
every 27.3 days
every 24 hours
Answers
Spring and Neap rides occur twice a month
Spring and neap tides occurs twice a month.
What is the difference between spring and neap tides?A neap tide refers to a period of moderate tides when the sun and moon are at right angles to each other. A spring tide is a common historical term that has nothing to do with the season of spring.
In the period between the two spring tides, the moon faces the Earth at a right angle to the sun. When this happens, the pull of the sun and the moon are weak. This causes tides that are lower than usual. These tides are known as neap tides.
Spring tides have higher high tides and lower low tides whereas neap tides have lower high tides and higher low tides. Hence, the range (difference in water level between high and low tide) is much larger in a spring tide than in a low tide.
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