Answer:
Reaction times slow with age, and they correlate with scores on tests of higher cognitive functions many of which also deteriorate with age. The age-related changes in reaction times account for a substantial proportion of the age-related variance in higher cognitive functions (e.g., Deary, 2000. 2000Reflexes do slow with age. Physical changes in nerve fibers slow the speed of conduction. ... But the effect of age on reflexes and reaction time varies greatly from person to person. You can actually slow down—even reverse—the effects of aging by staying physically active.The next time some twenty-something complains that they feel old, you can reassure them that their feelings are, in fact, not ridiculous. After studying 3,305 people ages 16 to 44, researchers found that the brain's response time begins to decline at age 24.
Explanation:
Researchers want to use eDNA to look for an invasive species in a waterway.
Which step should they do last?
A. Cut the DNA into fragments of different sizes.
B. Compare the samples with a positive control.
C. Isolate DNA from the waterwakin question.
D. Stain the gel to reveal a banding pattern.
The last step to observe different DNA patterns is to stain the gel to reveal a banding pattern (Option D).
DNA extraction, polymerase chain reaction (PCR) and fragment separation by gel electrophoresis are basic molecular techniques used to identify patterns in DNA.The patterns in DNA can be used for identifying an individual in a population, distinguishing different species, etc. These patterns can be obtained by using restriction enzymes.There are different dyes used to stain DNA before the identification of patterns in DNA.For example, ethidium bromide is a widely used dye to stain DNA before fragment separation by agarose gel electrophoresis.In conclusion, the last step is TO STAIN the gel with a DNA dye to reveal a banding pattern (Option D is correct).
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C Protista itc
5. Which of the following is a heterotrophic eukaryote associated with the decomposition of dead organisms
a Protist
b. Herbivore
c Bacterium
I
d Fungus
Help
based on the lesson, explain how dna creates proteins
Answer:
During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.
Explanation:
Transpiration (the evaporation of water out of the leaves) helps
pull what up through the roots and stems and into the leaves?
Transpiration helps to pull water and dissolved minerals up through the roots and stems of plants and into the leaves, which is present in the third option as the transpiration creates a negative pressure, or tension, in the leaf tissues.
What is transpiration?
Plants absorb water and minerals from the soil, and these minerals, such as nitrogen, phosphorus, and potassium, are essential for plant growth and development, the roots of plants have tiny, hair-like structures called root hairs, which increase the surface area of the root and help in the absorption of water. Water and minerals are absorbed by the roots to be transported upwards through the plant stem to the leaves, and this transport occurs in specialized vascular tissues called the xylem and the phloem.
Hence, transpiration helps to pull water and dissolved minerals up through the roots and stems of plants and into the leaves, which is present in the third option.
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what are the products of the combustion of a hydrocarbon
Answer: Carbon dioxide, water, and heat.
Explanation: Hydrocarbon combustion refers to the type of reaction where a hydrocarbon reacts with oxygen to create carbon dioxide, water, and heat. Hydrocarbons are molecules consisting of both hydrogen and carbon. They are most famous for being the primary constituent of fossil fuels, namely natural gas, petroleum, and coal.
Answer:
Carbon Dioxide and Water!!!
Explanation:
EDG2021
In which situation is the principle of cross-cutting relationships useful in determining relative age?
1. A fault breaks through sedimentary layers.
2. Fossils of two different species are found in different rock layers.
3. Sedimentary layers form over millions of years in a lake bottom.
4.Lava flows form on top of one another from several eruptions over time.
HELP ASAP
MARK BRAINIST
Answer:
1. A fault breaks through sedimentary layers.
Explanation:
The principle of cross cutting relationships is useful in determining the relative age of a fault break through sedimentary layers.
Principle of cross cutting relationships states that "a feature which cuts through a rock sequence is younger than the rock through which it cuts through".
A fault break through sedimentary layers is younger than the rock layers.
Answer:
A.) A fault breaks through sedimentary layers.
Explanation:
I got it right on the test
You are on a flight to Los Angeles, California. As the plane gets ready to land, it flies out over a large body of water. You look out the window and can see only water in the distance. You are over an ocean. Which ocean can you see?
Answer:
pacific ocean
Answer:
Pacific Ocean
Explanation:
Give 3 harms done by groundwater to living organisms.
Answer:
1 harm done by groundwater to living organisms is that the water Drowns them.
Students were studying a graph showing the phase changes of a substance. The graph is shown below. Which statement best describes the data shown?
Answer:C
Explanation:P shows a increase of kinetic energy and a phase change from solid to liquid
Molecules can cross cell membranes from areas of low concentration to areas of high concentration by
binding with carrier proteins and ATP. What is this process called?
A. Osmosis
B. Endocytosis
C. Facilitated Diffusion
D. Active Transport
Answer: THE ASNWER IS A. Osmosis
Explanation:
Osmosis. Osmosis is the movement of water across a membrane from an area of low solute concentration to an area of high solute concentration.
Which of the following statements BEST describes the products of the photosynthesis process?
a. They are also the products of glucose.
b. They are also the starting materials of glucose.
C. They are also the starting materials of cellular respiration.
d. They are also the products of cellular respiration.
Answer:
C - They are also the starting material (reactants) of Cellular Respiration.
Explanation:
Hope this Helps!!
:D
HELP FAST, HELP ASAP
Which gases contribute to the greenhouse effect?
which one of these is the answer
nitrogen and helium
carbon dioxide and methane
carbon dioxide and helium
nitrogen and methane
Answer:
Overview.
Carbon Dioxide.
Methane.
Nitrous Oxide.
Fluorinated Gases.
Explanation:
Here you go
Answer:
carbon dioxide & methane
Explanation:
Which process is part of the carbon cycle?
A. Photosynthesis
B. Transpiration
C. Evaporation
D. Fixation
Hey there!
Photosynthesis is part of the carbon cycle.
Plants absorb carbon dioxide & sunlight in the middle of the photosynthesis process and create glucose (a type of sugar).
I hope this helps,
have a wonderful day. :)
Photosynthesis is part of the carbon cycle. Therefore option A is correct.
Photosynthesis is a vital process in the carbon cycle, which is the biogeochemical cycle that describes how carbon is exchanged and recycled between the atmosphere, living organisms, oceans, and the Earth's crust.
During photosynthesis, green plants, algae, and some bacteria convert carbon dioxide (CO2) from the atmosphere into organic compounds, such as glucose, using sunlight as an energy source.
This process removes CO2 from the atmosphere, reducing greenhouse gas levels and helping to regulate the Earth's climate.
It is an essential step in maintaining the balance of carbon in the biosphere and plays a significant role in sustaining life on our planet.
Therefore option A Photosynthesis is correct.
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Explain the differences between the three ways of heat transfer, conduction, convection, and radiation.
Answer:
The differences between these three ways of heat transfer are that conduction is the transfer of thermal energy through direct contact, convention is the transfer of thermal energy through the movement of liquid or gas, and radiation is the transfer of thermal energy through thermal emission. As you can see, each way of heat transfer has a different way of moving through objects.
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answer for electron arrangment worksheet
I'll give you brainliest if u help me asap
Answer:
paramecium
Explanation:
A healthy blood pH for humans is around 7.4. Lee's blood pH is 7.2. Which statement most likely describes Lee's
condition and treatment plan?
O Lee has type 1 diabetes and will receive insulin injections.
O Lee has hypothermia and will receive core warming therapy.
Lee has insomnia and will receive non-habit-forming medication.
O Lee has acidosis and will receive infusions of bicarbonate.
Answer:
He has acidosis
Explanation:
Neurological and perceptual speeds are generally higher in individuals with _________ intelligence.
A. general
B. lower
C. higher
D. inherited
Answer: C. higher
Neurological and perceptual speeds are generally higher in individuals with higher intelligence.
Neurological and perceptual speeds are generally found to be higher in individuals with higher intelligence. Thus, the correct option will be C.
What is Neurological and perceptual speed?Neurological speed can be defined as the speed or how fast the neurons react in the body, how fast a person acquires and processes the information. Neurological speed can be calculated through aptitude tests. These are the tests which are designed to predict a person's future performance and aptitude is the capacity of a person to learn.
Perceptual speed is the speed which indicates the automaticity as well as the efficiency of processing novel visual information and speed of decision-making of a person. Perceptual speed is typically assessed with the speeded tests that require the quick identification of specific targets from a set of stimuli in the body.
Neurological and perceptual speeds are generally higher in the individuals with higher intelligence.
Therefore, the correct option will be C.
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What is difference between acid and bases?
Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)
Answer:
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Explanation:
An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Visual Reading Tool: Inside a Chloroplast
1. Fill in the reactants and products of the light-dependent and light-independent reactions of
photosynthesis.
Light-Dependent
Light-Independent
Reactions
Reactions
NADPH
ATP
THYLAKOID
ADP
STROMA
NADP
2. What is the NADPH responsible for?
3. Where do the "light" reactions (light-dependent) take place?
Answer:
A) Light dependent reactions
Reactants: light, H2O
Products: Oxygen gas
B) Light independent reactions
Reactants: C02
Products: Glucose
2. NADPH is an electron carrier which transfers electrons in the electron transport chain of photosynthesis
3. Light reactions occur in the THYLAKOID membrane.
Explanation:
As depicted in the image in this question, the photosynthetic process can be grouped into two stages viz; light dependent reactions and light independent reactions. The light dependent reactions, which take place in the THYLAKOID MEMBRANE of the Chloroplast, involves the synthesis of ATP (energy carrier) and NADPH (electron carrier) to be used in the next stage. The reactants of light dependent reactions are light energy from sun, and water (H2O) while the product is Oxygen (O2) gas.
In the light independent reactions, the ATP and NADPH are used to synthesize GLUCOSE as a product from Carbon dioxide (CO2) reactant.
2. The NADPH is is an electron carrier produced from the reduction of NADP+, which transfers or donates electrons to other molecules in the electron transport chain of photosynthesis. This is crucial in building of the proton gradient for ATP production.
3. The light reaction or light dependent reaction takes place in the THYLAKOID MEMBRANE of the Chloroplast.
The light-dependent reactions use ADP and NADP to produce NADPH and ATP (it occurs in the thylakoid membrane), whereas light-independent reactions use NADPH and ATP. NADPH is a cofactor.
The light-dependent reactions use sunlight and water (H2O) to produce oxygen (O2), NADPH and ATP, whereas light-independent reactions use carbon dioxide (CO2) NADPH, and ATP to produce simple carbohydrates (e.g., glucose).Both light-dependent reactions and light-independent reactions occur in the chloroplast: light-dependent reactions occur in the thylakoid membrane of the chloroplast, whereas light-independent reactions occur in the stroma of the chloroplast.Reduced nicotinamide adenine dinucleotide phosphate (NADPH) is a cofactor that transports electrons (e-) and protons (H+) released by sunlight into new carbon-carbon bonds and thus serves to produce simple carbohydrates (i.e., sugars).In conclusion, the light-dependent reactions use ADP and NADP to produce NADPH and ATP (it occurs in the thylakoid membrane), whereas light-independent reactions use NADPH and ATP to create carbohydrates.
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Select the correct answer. Hormones are chemical molecules produced by glands. Vasopressin is a hormone secreted by the cells of the hypothalamus, a part of the brain. The hormone regulates homeostasis through its effect on the kidney cells. Which statement is true based on this information? A. All cells in the human body produce the same types of hormones. B. Specialized cells allow for different organs to work together to perform a function. C. Cells can work together only if they’re located in the same area of the body. D. All cells in the human body have the same structure and function.
B. Specialized cells allow for different organs to work together to perform a function.
Which of the following correctly matches a catastrophic weather event with its effects on an ecosystem?
Answer:
I think the answer would be C.
Explanation:
It's the one that makes sense.
Buildings can be demolished, which can result in the release of various harmful substances into rivers, lakes, bays, and the ocean, harming marine life. These substances include paint, pesticides, and gasoline. Thus, option C is correct.
What are the effect of catastrophic weather on ecosystem?Droughts that are more frequent and extreme, storms, heat waves, rising sea levels, melting glaciers, and warmer oceans can all directly injure animals, destroy the habitats they rely on for survival.
And have a disastrous impact on people's way of life and communities. As climate change worsens, dangerous weather occurrences occur more frequently or with greater severity.
When drainage systems are destroyed by floods, raw sewage leaks into bodies of water.
Therefore, a thunderstorm lightning can start a forest fire.
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What is Endochondral Ossification?
Answer:
The formation of bone in which a cartilage template is gradually replaced by a bone matrix, as in the formation of long bones or in osteoarthritic ossification of synovial cartilage.
How could you show both the hills and the flat fields on the same map?
Answer:
For the hills, you would have to draw a symbol to symbolize the mountains. Like, you could draw a curved line to represent the hills. Then come up with another symbol for the flat lands, but be sure to do a key, telling which means hills and which means flat fields.
I hope this helps!!!
Explanation:
ana walked through this part of the forest. When she passed under some low branches, water drops fell on her head. What most likely caused that water drops to form?
Answer:Fog condensed on the leaves.
Explanation:
What is the purpose of RNA Translation
Answer:
this is how proteins are bound, through a series of amino acids combined in a chain
Explanation:
Long lashes (L) are dominant over short eyelashes (l). Complete a Punnett Square crossing two parents that are both heterozygous for long eyelashes.
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Glucose reacts with Oxygen to form Carbon dioxide and water. During this process, glucose is oxidized to Carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP
(adenosine triphosphate).
THE REACTION
C6H12O6 + 6O2 → 6CO2 + 6H2O
what is the purpose or function for ectoplasm in biology
21. Choose one of the hypotheses from Question 20. Describe how you could set up an experiment to test the hypothesis by listing your experimental groups, control group, and at least 2 constants you would need to have.
this is question 2020. Identify the independent and dependent variables in the hypotheses below: (4 pts)
A. If a player practices longer, then he will score more points in the game.
B. If students eat a high-protein breakfast, then they will score higher on their biology test.
Answer:
Biologists and other scientists use the scientific method to ask questions about the natural world. The scientific method begins with an observation, which leads the scientist to ask a question. She or he then comes up with a hypothesis, a testable explanation that addresses the question.
A hypothesis isn't necessarily right. Instead, it's a "best guess," and the scientist must test it to see if it's actually correct. Scientists test hypotheses by making predictions: if hypothesis \text XXstart text, X, end text is right, then \text YYstart text, Y, end text should be true. Then, they do experiments or make observations to see if the predictions are correct. If they are, the hypothesis is supported. If they aren't, it may be time for a new hypothesis.
How are hypotheses tested?
When possible, scientists test their hypotheses using controlled experiments. A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant. We'll look closely at controlled experiments in the next section.
In some cases, there is no good way to test a hypothesis using a controlled experiment (for practical or ethical reasons). In that case, a scientist may test a hypothesis by making predictions about patterns that should be seen in nature if the hypothesis is correct. Then, she or he can collect data to see if the pattern is actually there.
Controlled experiments
What are the key ingredients of a controlled experiment? To illustrate, let's consider a simple (even silly) example.
Suppose I decide to grow bean sprouts in my kitchen, near the window. I put bean seeds in a pot with soil, set them on the windowsill, and wait for them to sprout. However, after several weeks, I have no sprouts. Why not? Well...it turns out I forgot to water the seeds. So, I hypothesize that they didn't sprout due to lack of water.
To test my hypothesis, I do a controlled experiment. In this experiment, I set up two identical pots. Both contain ten bean seeds planted in the same type of soil, and both are placed in the same window. In fact, there is only one thing that I do differently to the two pots:
One pot of seeds gets watered every afternoon.
The other pot of seeds doesn't get any water at all.
After a week, nine out of ten seeds in the watered pot have sprouted, while none of the seeds in the dry pot have sprouted. It looks like the "seeds need water" hypothesis is probably correct!
Let's see how this simple example illustrates the parts of a controlled experiment.
Explanation:
