Answer: hydrogen bonding is the association between a hydrogen atom which is somewhat positive because it is bonded to a small electronegative atom and an atom of O, N or F on another molecule
Explanation:
true or false? diffusion is a result of the random movement of particals
Im so sorry if im asking alot of questions but i dont know anything so can someone help me ?
Answer:
The homogeneous mixture is only in the one phase of matter, whereas heterogeneous mixture is always in two or more than two different phases of matter. Solutions are termed as the homogeneous mixtures, on the other hand, suspensions or colloids are termed as the heterogeneous mixtures.
Examples:
Homogeneous:
Bronze: this alloy is an example of homogeneous substances since it is composed of tin and copper.
Milk : this mixture that we see in a uniform way is composed of substances such as water and fats.
Heterogeneous:
Mixtures in two or more phases are heterogeneous mixtures. Examples include ice cubes in a drink, sand and water, and salt and oil. The liquid that is immiscible form heterogeneous mixtures. A good example is a mixture of oil and water.
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Question: A marine biologist is testing the hypothesis that cold water promotes the growth of corals. Which of the following study designs may yield the most conclusive results?
A.) Two study sites with stable differing water temperatures, similar water nutrient profiles, and similar coral communities growing at different depths
B.) Two study sites with fluctuating water temperatures, similar coral communities growing at similar depths, with similar water nutrient profiles
C.) Two study sites with the same temperature profile, different coral communities growing at different depths, with different water nutrient profiles
D.) Two study sites with stable differing water temperatures, similar coral communities growing at similar depths, with similar water nutrient profiles
The statement that reveals the best study designs and may yield the most conclusive results is as follows:
Two study sites with stable differing water temperatures, similar water nutrient profiles, and similar coral communities growing at different depths.Thus, the correct option for this question is A.
What is Hypothesis?In experimental biology, the hypothesis may be defined as a testable statement about the relationship between two or more variables or a proposed explanation for some observed phenomenon. It is basically an assumption that is made based on some evidence.
According to the context of this question, the hypothesis that best demonstrates the most conclusive results for the above experiment is the stable differing water temperatures, similar water nutrient profiles, and similar coral communities growing at different depths. This is because the depths of the coral may vary with respect to the nutrients available in an aquatic ecosystem.
Therefore, the correct option for this question is A.
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Some astronomers work for consulting firms that provide expertise to government agencies. Which of the following explains why an astronomer would work as a consultant?
An astronomer would be able to focus on research alone.
An astronomer would not have to obtain a national security clearance.
An astronomer would apply expertise to improve satellite designs.
An astronomer can make more money working as a consultant.
Answer: An astronomer would apply expertise to improve satellite designs
The one that explains why an astronomer would work as a consultant is an astronomer would apply expertise to improve satellite designs. The correct option is c.
Who is an astronaut?An astronaut is a person who works in the areas of space. They have knowledge of space equipment, and technologies.
A satellite is an instrument that revolves around the planets. There are natural satellites and artificial satellites. Natural satellites are the moon and artificial satellites are made by space design artists and all the activities are checked by astronauts.
A consultant is an assistant that works with an astronaut. They have expertise in technologies and assistance in the making of space equipment.
Therefore, the correct option is c. An astronomer would apply expertise to improve satellite designs.
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What are some of the major forces that influence the movements of the oceans?
Cellular respiration uses one glucose molecule to produce a total of
A. 36 ATPs.
B.38 ATPs.
C. 2 ATPs.
D. 24 ATPs.
Cellular respiration uses one glucose molecule to produce a total of 38 ATPs (option B).
What is cellular respiration?Cellular respiration is the process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide.
Cellular respiration occurs in three processes namely;
Glycolysis; this is the cellular degradation of the simple sugar glucose to yield pyruvic acid, and ATP as an energy source. Krebs cycle; this is a series of enzymatic reactions that occurs in all aerobic organisms; it involves the oxidative metabolism of acetyl units, and serves as the main source of cellular energy.Electron transport chain; this is a series of electron transfer that results in the synthesis of large amount of energy.In total, the overall process of cellular respiration results in the formation of 38ATPs.
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Answer:
A. 36 ATPs.
Explanation:
took the test good luck! ;)
true or false? diffusion requires energy from respiration
Answer:
true
Explanation:
What is a substrate? A)the difference between a chemical reaction and an enzyme B)the place where an enzyme attaches itself C)It is a sticky molecule. D)the molecules that the enzyme sticks to in a chemical reaction E)a molecule that releases the energy in a chemical reaction
Answer:
D is correct answer...!
Explanation:
Enzyme binds with substrate to form ES complex.
E+S--->ES Complex--->E + P
b) How does the thermal energy of solid water change as it melts?
Answer:
Hi! So solid water would be ice, the particles in ice are very close together which makes it firm and makes it ice. When you put the ice in the microwave, (Microwave has heat so it would be thermal energy!) the particles in the ice mover a tiny bit away from each other which then makes it water. Then, if you boil the water, the particles that are in the water move far away from each other and it turns into steam!
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Which statement best describe the way thay an adesine phiphosphate molecule become an adenosi trphosphate molecule in the human body?
A. Protein cause phosphate molecule to bind to sugar and form ATP.
B. Food energy is used to attach a phosphate molecule to an ADP molecule.
C. Lonized Oxygen in cells causes sugars and phosphate molecule to form ATP.
D. Water breaks down ADP molecules which form into ATP molecules over time.
Answer:
B. Food energy is used to attach a phosphate molecule to an ADP molecule
Explanation:
Hope this helps!
A landscaper is shopping for landscaping materials. She wants to use materials through which water flows easily. Which two materials should she choose? Clay and gravel gravel and loosely packed soil granite and rocks with cracks rocks with cracks and clay
Answer:
The correct answer is - Clay and gravel
Explanation:
Water can flow from the substance or material with greater porosity which is the number of pores resent in the particles of soil for easy exchange of water and gases.
Clay particles exhibit a higher amount of pores that permit the water to flow from it. Gravel allows water to pass from it as it is a loosely packed fragment of rocks
Answer:
gravel and looselypacked soil
Explanation:
PLEASE ANSWER ASAP. Thank you. QUESTION: Explain the evidence that suggests that the universe is expanding.
Look at the images below and order them from smallest to largest, using 1 for the smallest unit and
3 for the largest
Plant Cell
Atom
Molecule
21. Which of the following statements about catabolic pathways is false?
a. Carbohydrates can feed into oxidative phosphorylation.
b. Glycogen can be broken down into glucose and feed into glycolysis.
c. Amino acids can feed into pyruvate oxidation.
d. Fatty acids can feed into the citric acid cycle.
from my point of view I think the answer should amino acid can fit into pyruvate oxidation
Carbohydrates can not feed into oxidative phosphorylation, firstly carbohydrates catabolize through glycolysis and the citric acid cycle and release electrons which feed into oxidative phosphorylation.
What are catabolic pathways?Acetyl-CoA, a chemical that "feeds" the citric acid cycle, can be produced from pyruvate (a byproduct of glycolysis), fatty acid -oxidation, ketone bodies, and amino acid metabolism.
The citric acid cycle is "cataplerotic" when molecules from other routes enter it for catabolism. Amino acids catalyze the breakdown of pyruvate.
Alanine, serine, glycine (through serine), and cysteine are among the amino acids with three carbon atoms that are transformed into pyruvate (the entry point for the citric acid cycle or gluconeogenesis)
Therefore, carbohydrates can feed into oxidative phosphorylation is false about the catabolic pathway, hence option A is correct.
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Are viruses alive
Explain
Answer:
Yes i think so
Explanation:
Answer:
Yes, because the coronavirus just proves it-
Explanation:
With respect to one another, galaxies have been found to be
1. moving closer together
2.moving farther apart
3.moving in random directions
4.stationary
With respect to one another, galaxies have been found to be moving farther apart from each other. The correct option is 2.
What are galaxies?Galaxies are large areas that contain stars, dark matter, dust, interstellar gases, etc. It is a gravity-bound system that contains everything in its own place.
There are many galaxies, some are still undiscovered. Our galaxy in which the earth is present is called the Milky Way. It is called the Milky Way because due to many stars it looks like a shiny white path.
Now, the Big Bang Theory says that the universe is made up of expanding of a single point. And the universe is still expanding, so the galaxies' and other matters still going farther away.
Thus, the correct option is 2. Moving farther apart.
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All animals go through puberty which prepares their body to have offspring. The cause for the changes in our body are due to hormones being released into the blood stream to different organs in your body. List and explain two organ systems involved.
Answer:
Endocrine and Circulatory system
Explanation:
Endocrine releases horomones while circulatory circulates blood around the body. The hormones are transported around the body in blood.
At which point in the graph has the population reached carrying capacity?
A. Point B
B. Point A
C. Point C
D. Point D
The presence of organic material in soil makes it more productive for plant growth.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
Organic matter in the soil is called "humus". It is formed by the decomposition of plant material by microorganisms.
It is extremely important for retaining water and nutrients in the soil, both of which are crucial for plant growth and survival. Therefore, organic matter in the soil makes the soil much more "productive."
When two species are forced to interact in a particular environment, how would
relationships of competition, predation, and mutualism affect the two populations?
Answer:
Find the explanation below.
Explanation:
When two species find themselves in the same environment, the quest for survival would lead to interactions among themselves.
Competition would result when there are limited resources. For example, when Tigers and Lions who feed on the same prey exist together in an environment, a competitive relationship can result.
Predation is a sort of interaction where an organism feeds on a prey to survive. Here, the weaker animal/species stands the risk of being defeated in the battle for survival. For example, in some homes where cats and rats exist, the cats tend to prey on the rats.
Mutualism is a form of symbiotic relationship where the animals exist together in a cooperative manner. Most fungal species have been found to have a mutualistic relationship with the roots of plants. Each of these two is important to each other's survival.
which best describes the big bang theory
Answer:
The expansion and cooling of the universe from an originally hot and dense state.
Answer: D. The universe formed during a single event in which all matter and energy suddenly expanded from an extremely small, dense, and hot point of pure energy called a singularity.
Which term can be described as "many different species living together, interacting with each
other and with their physical environment?
A. a food chain
B. a food web
С. a nutrient cycle
D. an ecosystem
Answer: D
Explanation: community forms an ecosystem by its interaction with the abiotic environment. Species: A group of organisms that can potentially interbreed to produce fertile, viable offspring.
does breast cancer occur in men? what are the signs and symptoms?
actually anatomy & physiology
Answer:
Yes
Explanation:
Breast cancer can occur in men. Symptoms can include a hard lump in the breast area, nipple discharge, the nipple turning inwards, and/or a rash around the nipple.
The normal human body temperture for adults is around 37°C. Which temperature and pH profile curves on the graphs in the figure were most likely generated from analysis of an enzyme from the
human stomach, where conditions are strongly acidic?
Please help!!
A. Curve 1
B. Curve 2
C. Curve 3
D. Curves 1 and 2
Answer:
i think it should be curve 1
Explanation:
in the graph temperature affect the rate of reaction in each curve, we just need to find the enzyme that has best reaction rate around 37 degree which is curve 1.
ASAP Describe the levels of protein folding- primary, secondary, tertiary & quaternary structure of proteins.
Answer:
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Explanation:
The different levels of protein structure are known as primary, secondary, tertiary, and quaternary structure. The primary structure is the sequence of amino acids that make up a polypeptide chain. ... The exact order of the amino acids in a specific protein is the primary sequence for that protein.
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Andrew wants to determine if playing classical music will affect the growth of his rose buses. Determine three constant variables of this experiment.
Answer:
The fourth option
Explanation:
I am pretty sure that it is the fourth option
Explain how human activities may have led to species being threatened or endangered?
Answer:
Invaded their habitats and hunted them
Explanation:
Why do you think cells of the epithelial tissue are close together?
Answer:
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Explanation:
The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane. The cells in epithelial tissue are very closely packed together and joined with little space between them. ... Epithelial tissue functions to absorb, secrete, and excrete substances.
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an elements has two or more atoms with the same number of protons but different
number of neutrons it is called a(n)
isotope
neutron
electron
none of the above
Answer isotope
Explanation: it has more than one atom
What is a carbon hydrate molecule?
Answer: A carbohydrate is an organic compound such as sugar or starch, and is used to store energy
Explanation:
Answer:
A carbohydrate is an organic compound such as sugar or starch, and is used to store energy. Like most organic compounds, carbohydrates are built of small, repeating units that form bonds with each other to make a larger molecule. ... Carbohydrates contain only carbon, hydrogen, and oxygen.A
Explanation: