Mad scientists Ms. Jones & Ms. Peek studied how a catalyst affects the rate of a chemical reaction. The data table below shows their results
Amount of Catalyst (mg)
Reaction Time (s)
10
60.3
20
47.7
30
31.8
40
22.6
Which statement correctly describes the pattern in the data (AKS 1a1)(DOK 1)
Question 25 options:
a. The catalyst did not affect the rate of the reaction.
b. The more catalyst added, the slower the rate of reaction
c. The more catalyst added, the faster the rate of the reaction
d. If 50 mg of catalyst were added, the reaction would take less than 22.6 seconds
Answer:
b. Cu cât se adaugă mai mult catalizator, cu atât viteza de reacție este mai RMEA
Explanation:
5.
Which of the following is the most used form of renewable energy?
wind power
wood burning
biofuels
hydroelectric power
Answer:
hydroelectric power
Explanation:
Hydropower is the most widely-used renewable power source, with the global hydroelectric installed capacity exceeding 1,295GW, accounting for more than 18% of the world's total installed power generation capacity and more than 54% of the global renewable power generation capacity.
Answer:
hydroelectric power
Explanation:
ASAP The levels of water and salt in the blood are controlled by the ________, which is controlled by the ________.
Answer:
the hormone that regulates the salt and water levels is aldosterone found on the adrenal gland that sits above the kidney
Explanation:
Aldosterone, a hormone found in the adrenal gland above the kidney, regulates salt and water levels which are usually regulated by the renin-angiotensin system.
What is aldosterone?Adrenal glands secrete aldosterone, a steroid hormone. Its primary function is to regulate salt and water in the body, thereby influencing blood pressure.
It is actually regulated by a system namely the renin-angiotensin system.
Thus, aldosterone, a hormone found in the adrenal gland above the kidney, regulates salt and water levels which are usually regulated by the renin-angiotensin system.
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Although flowers have a common ancestor, they vary quite differently due to the environment and their specific pollinators. This is an example of
Answer:
Divergent evolution.
Explanation:
Divergent evolution can be defined as the process in which more than one group of the same species (from the same ancestors) evolve and possesses (accumulates) various features or traits such as behavior or bodily structures, thus, resulting in the formation of new species of the living organisms.
Although flowers have a common ancestor, they vary quite differently due to the environment and their specific pollinators. This is an example of divergent evolution.
What question did Charles Darwin attempt to answer?
A. Where is genetic material stored in the cell?
B. How many offspring can an organism have?
C. Why do different organisms live in different places?
D. Are an offspring's traits similar to those of its parents?
Answer:
The correct answer is C. Why do organisms in different places have different traits?
Explanation:
Charles Darwin was a naturalist, biologist, and geologist from England and known for his theory of evolution. According to the theory, he observed different types of species of organisms such as birds, plants and fossils all over the world and found similarities in the characteristics.
He suggested that there were variations in species on the basis of specific geological locations. On the basis of these observations, he proposed that all species of organisms are come from the same ancestor but shows the differences due to the response to the condition of their habitat or location
Answer: C <3
Explanation:
What are some helpful and harmful examples of dna mutations
Answer:
Examples of helpful mutations embrace HIV resistance, milk sugar tolerance, and colored vision.Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes.A cell is placed in a solution with a HIGHER solute concentration (a
hypertonic solution) than the inside of the cell. What will happen to the
cell?
Answer:
the cell will shrink due to the concentration gradient. Areas of low to areas of higher concentration.
Explanation:
help asap for biology.
The shadow zone exists due to the of seismic waves.
O A. reflection
O B. refraction
O C. absorption
OD. deletion
Answer:
B. refraction
Explanation: hope this helps!
The shadow zone exists due to the effect of seismic waves is the refraction. Thus, the correct option will be B.
What is Refraction?Refraction can be defined as the redirection of a wave as it passes from one medium to another medium. The redirection of the waves in a medium can be caused by the wave's change in speed or by a change in the medium of wave.
Seismic waves are the waves which follow the same law of refraction at the compositional boundaries. If the seismic wave velocity in the rock below a boundary is increasing then, the waves will be refracted in the upward direction and this speed up relative to their original path of movement.
Therefore, the correct option will be B.
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Compare the environmental impact of using solar, geothermal, and nuclear energy.
Answer:
Both the sun and geothermal are considered renewable energy sources. ... nuclear energy produces nuclear waste, but solar and geothermal energy does not produce large amounts of waste.
Explanation:
The nuclear energy has more environmental impact as compare to solar energy and geothermal energy. The nuclear energy produces nuclear waste where solar energy and geothermal energy is renewable source of energy.
What type of nuclear wastes produce through nuclear energy?The nuclear energy produces radioactive wastes like uranium mill tailings, spent reactor fuel etc. These radioactive wastes are dangerous for human heath for thousands of year.
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answers :
oxygen
glucose
water
carbon dioxide
Answer:
1. Is Carbon Dioxide
2. Is oxygen
3. Water
4. Glucose
Explanation:
I think these are the answer, I am not sure.
Which body system assists the respiratory system in the exchange of chemicals within the body's cells?
O A. circulatory
B. reproductive
O C. excretory
D. digestive
The table below shows the depths at which an index fossil and three other fossils were found.
Fossil Data
Fossil Depth (meters)
A 320
B 380
C 500
Index fossil 380
Which statement is correct?
The index fossil is the oldest fossil.
The index fossil is the youngest fossil.
Fossil A is the same age as the index fossil.
Fossil B is the same age as the index fossil.
Answer:
Fossil B is the same age as the index fossil.
Explanation:
TOO LATE BUSTER
Answer:
B
Explanation:
Why does a violet flower look violet?
OA. It reflects all colors of light except violet.
O B. It absorbs violet light.
C. It transmits violet light.
OD. It reflects violet light.
Answer:
It reflects violet light
Explanation:
i just took the test
How are the pulmonary arteries and veins different from the arteries and veins of the rest of the body, in terms of the kind of blood they carry?
The Pulmonary Arteries are responsible for carrying low-oxygenated blood from the right ventricle of the heart to the lungs and the Systemic Arteries are responsible for transporting oxygenated blood from the left ventricle of the heart to the rest of the body while the Pulmonary Veins are responsible for carrying oxygenated blood from the lungs to the left atrium of the heart and the Systemic Veins are responsible for carrying low-oxygenated blood from the body to the right atrium of the heart.
The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
A. simple osmosis
B. active transport
C. simple diffusion
D. facilitated diffusion and please give a reason why you chose this answer
Answer
the answer would be b
Explanation:
By contrast, during Meiosis, what do daughter cells receive?
A. In meiosis, the daughter cells help increase genetic variation from one generation to the next.
B. Each chromosome will divide to produce two diploid daughter cells, each of which has the same number of chromosomes
C. Homologous chromosomes are separated, and each daughter cell receives 2 diploid sets of chromosomes.
D. Homologous chromosomes are separated, and each daughter cell receives only a haploid set of chromosomes
Answer:I’m on this question right now, do yk the answer
Explanation:
In meiosis, Each chromosome will divide to produce two diploid daughter cells, each of which has the same number of chromosomes.
What do you mean by meiosis?Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells.
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.
Therefore the purpose of meiosis is to produce gametes, the sperm and eggs, with half of the genetic complement of the parent cells.
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Based on the information in the graph, which region's population will grow the most in the next 40 years?
A. United states
B. Europe
C. Africa
D. Asia
Answer:
Africa
Explanation:
A P E X
a hurricane comes through and causes beach erosion. which choice best represents the systems that are affected?
A. hydrosphere, atmosphere, geosphere
B.atmosphere, cryosphere, geosphere
C.hydrosphere, lithosphere, biosphere
What is a hypothesis?
O A. A unifying model or explanation based on a large body of
experimental data
B. A guess or prediction based on previous experience or
observation
O C. A statement of fact that describes an action or set of events
O D. A statement that cannot be tested scientifically
Answer:
B
Explanation:
Answer: B: A guess or prediction based on previous experience or observation.
In the graph below, which letter represents the activation energy of a catalyzed reaction and why?
Choose 1 answer:
(Choice A) Y; the activation energy is reduced in a catalyzed reaction
(Choice B) X; the activation energy is greater in a catalyzed reaction
(Choice C) X; the activation energy is greater in an uncatalyzed reaction
(Choice D) Y; the activation energy is greater in an uncatalyzed reaction
Report a problem
Answer: Choice C) X; the activation energy is greater in an uncatalyzed reaction
Explanation: I got this question on khan academy.
The option that represents the activation energy of a catalyzed reaction is C. X; the activation energy is greater in an uncatalyzed reaction.
Activation energy simply means the minimum amount of energy that should be provided for compounds that'll result in a chemical reaction.
It should be noted that the activation energy for uncatalyzed conversion to the products will be more than that of the catalyzed reaction. In this case, X; the activation energy is greater in an uncatalyzed reaction.
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I NEED HELP PLEASE IT'S DUE TOMORROW PLEASEEEE
Answer:
5. heart rate
6. caffeine
7. mice
8. c
9.b
10. (not sure sorry)
Explanation:
5 is heart rate because how high/low it is depends on the amount of caffeine they have. Ex- if they have a lot of caffeine the heart rate would be higher like in humans.
6 is caffeine because the heart rate depends on the amount of caffeine given.
7 is the mice because thats the one thing not changing or dependent on anything since we can see mice without caffeine and mice with caffeine
8. is c because Ari wants to see if the heart beat is dependent on caffeine
9 is b cause theres a group of mice without caffeine
Which level or organization is higher than the water hole community ?
Answer:
the answer is a
Explanation:
i did that same question in my test
1. How would you describe the biosphere?
2. What are some ways we, as humans, affect the biosphere?
Answer:
1. The Biosphere is a life-supporting stratum of Earth's surface, extending from a few Km into the atmosphere all the way to the deep-sea vents of the ocean. The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients
2. Humans burning fossil fuels and growing animal agriculture has led to large amounts of greenhouse gases (such as carbon dioxide and methane) in the atmosphere. Higher concentrations of greenhouse gases trap more heat in the biosphere and result in global warming. Humans have caused threats to non-renewable resources, CO2 production& global warming, as well as over-competition for food between native and introduced species.
name two proccesses that fix atmospheric nitrogen
Answer:
Lightning, ammonia production, nitrogen fixing bacteria
Explanation:
What are 5 factors that decrease populations (explain each or tell how that factor causes a decrease in a population).
Answer:
Morality and Emigration
Explanation:
Mortality and emigration decrease the population. Thus, the size of any population is the result of the relationships among these rates. Natality, mortality, immigration, and emigration rates apply to every population, including the human population. The sum of these rates makes up the growth rate of a population.
Which statement BEST describes the relationship between mass and weight?
A. As the value for mass increases, the weight decreases.
B. The mass will always be greater than the weight.
C. Weight is always needed to calculate mass.
D. Weight is dependent on mass and gravity.
Which of the following is a result of reduced levels of red blood cells and elevated levels of white blood cells in the body?
Efficiency of oxygen transport is reduced due to an infection.
Efficiency of nutrient transport is reduced due to an infection.
Efficiency of oxygen transport is reduced, but not due to an infection.
Efficiency of nutrient transport is reduced, but not due to an infection.
Answer:
the white cell is the air in youre body and the red cell are the blood in youre body
Explanation:
Answer:
Efficiency of oxygen transport is reduced due to an infection.
Explanation: got it right on flvs
BIOLOGY HELP PLS!!!!!!! I DONT KNOW WHAT THIS IS XD
The purpose of photosynthesis is …...
helppppp
Answer:
Is for plants to receive energy without hunting for food. they are stationary organisms, therefore depend on photosynthesis for food/energy.
Answer:
Explanation:
to convert light into food
if you want me to pick a multiple choice question just comment on my answer