Answer:
Im pretty sure its A.
Explanation:
=just took the teskst
Answer: The correct answer is A. differentiation
Explanation: Confirmed correct.
A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored.
Dependent Variable: ______________________ Control Group: ____________________________
Independent Variable: _____________________ Experimental Group: ________
Answer:
Dependent variable - sleep times
Independent variable - jazz music/silence
Control group - Group 1. The group that was kept in a silent room
Experimental group - Group 2. The group placed in a room with jazz music.
Explanation:
The dependent variable is the actual variable to be measured during an experiment. The value of the dependent variable is dependent on the independent variable supplied. In this case, the dependent variable is the duration of sleep of the different groups.
The independent variable is supplied by the experimenter and is often manipulated to see the effects it will produce on the dependent variable. In this case, the jazz music and the silence in the rooms respectively represent the independent variable.
The control group receives no treatment variable and represents the group that is often used as the benchmark to measure the effects of treatment variables on experimental subjects. In this case, the control group is the group that was placed in a room without jazz music.
The experimental group is the group that receives the treatment variable and in this case, the group that slept in the room filled with jazz music.
Dependent Variable: The dependent variable in this experiment is the sleep duration or the length of time each participant slept.
Control Group: The control group in this experiment is the group of people placed in a quiet room where they went to sleep without any jazz music playing. This group serves as a baseline for comparison to evaluate the effects of jazz music on sleep duration.
Independent Variable: The independent variable in this experiment is the presence or absence of jazz music while falling asleep and throughout the night.
Experimental Group: The experimental group in this experiment is the group of people placed in a room where jazz music played softly as they began to sleep and continued to play throughout the night. This group is exposed to the independent variable (jazz music) to test its effect on sleep duration.
The purpose of this study is to determine if the independent variable (jazz music) has an impact on the dependent variable (sleep duration) by comparing the control group's sleep duration to that of the experimental group.
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Identify and describe the process that describes the movement of water in cells.
Explanation:
Osmosis is the process in which a solvent moves from a solution of low concentration to a solution of higher concentration . A gradient is followed for this movement and once the concentration of both the solutions(on either sides of the membrane) becomes equal the solvents stop flowing.
A population is growing at a rate of 2, 4, 8, 16, 32. Which type of growth does this describe?
Answer:
it is doubling
Explanation:
that is the answer
Answer:
x(2)
Explanation:
It's multiplying by 2
I ADDED EXTRA POINTS FOR A REASON!!!!!!!!!! GIVING BRAINLIEST, ⓉⒽⒶⓃⓀⓈ AND ✰FIVE STARS ✰
how do ferns reproduce?
Ferns produce male and female cones.
Ferns produce spores under its leaves.
Ferns produce egg and sperms cells in the leaves.
Ferns produce flowers that contain egg and sperm cells.
Answer:
The answer is C.
Explanation:
Most ferns reproduce differently, and that involves meiosis and fertilization. When you are thinking of the typical big fern plant, what it does is, by meiosis, produces spores, and spores have half the number of chromosomes of the big parent plant. The spores are released into the wind.
Answer: The correct answer on Ody2020 is: Ferns produce spores under its leaves.
Explanation: Got it right on the assignment.
I will give all my points For who ever answers this
A ball rolls down a ramp. starting from rest. After 4.9 seconds, its velocity is
7 m/s. What is the acceleration of the ball?
Answer:
1.43 m/s/s
Explanation:
[tex]a= \frac{vf-vi}{t}[/tex]
vi=0m/s
Vf=7m/s
t=4.9
[tex]7/4.9=1.4285714285714284[/tex]
or 1.43 m/s/s
The diffusion of a substance into or out of a cell requires
Answer:
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.
Explanation:
The diffusion of a substance into or out of a cell requires a process called diffusion, by which the molecules pass out through the plasma membrane.
What is diffusion?Diffusion is a key mechanism for material transfer within cells and for the passage of critical tiny molecules across the cell membrane. This process controls the exchange of gases in the gills and lungs. All cells release carbon dioxide as a byproduct of biological metabolism.
There are two processes by which the molecules pass through a semi-permeable membrane. The processes are osmosis and diffusion. When the material transfer from low concentration to higher concentration.
Thus, diffusion is the process by which molecules travel through the plasma membrane to allow material to enter or exit a cell.
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Define these words:
Activation energy
Catalyst
Enzymes
Substrate
Conservation of mass
Conservation of energy
Answer:
Activation Energy: the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
Catalyst: A substance that increases the rate of a chemical reaction
Enzymes: a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
Substrate:
the surface or material on or from which an organism lives, grows, or obtains its nourishment.
Conservation of mass: a principle stating that mass cannot be created or destroyed.
Conservation of energy:
a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
Which state is considered the “Mecca” of the natural revolution? AGRICULTURE*
Answer:
Texas
Explanation:
Donna has observed that her father can control the speed of their grandfather clock by adjusting the
height of the weight on the end of the pendulum. Donna thinks that the pendulum will move faster when
the weight is lowered, and wants to test her idea. Donna gets a stopwatch and measures the time it takes
for the pendulum to swing twenty times when the weight is moved to its lowest position. Donna begins to
move the pendulum up by 1 cm and continues to measure the time for twenty swings of the pendulum.
Donna records her data.
The missing part of the question is as follows:
Position Time (seconds)
1 23.23
2 21.56
3 20.33
4 19.00
5 18.02
Hypothesis: ____________
Dependent Variable: ____________
Independent Variable: ________________
Constants: __________
Control Group:_________________
Experimental Group: ____________
Answer:
Hypothesis:
if the weight is lowered the pendulum will move faster
Dependent Variable:
Time it takes the pendulum to swing or move
Independent Variable:
the position of the weight
Constants:
same weight and the same number of swings
Control Group:
pendulum at the lowest position
Experimental Group:
different height of pendulums
Explanation:
A hypothesis is a possible explanation for the observation in a given experiment which is "if the weight is lowered the pendulum will move faster" as it states the effect of length of the pendulum on the time it takes to swing.
The dependent variable in an experiment is affected and measured to see the effect which is the time it takes the pendulum to swing or move which is measured here and affected by the independent variable that is the position of the weight.
Constants are the variable that remains constant throughout the experiment that is the same weight and the same number of swings. Control group is the group of subject or condition which minimize the effect of factors or variables except one factor to compare or ensure if the experiment works that are pendulum at the lowest position. The experiment group is the group of a subject that get treatment desired to influence the dependent variable that is the different height of pendulums.
what’s the answer to this?
BRAINLIST OPPORTUNITY
where are you MOST likely to find infectious agents? Check ALL that apply!!
in saliva
in mucus
on a door handle
on a water fountain
on a gene
in sewage
in animal waste
Answer:
All
Explanation:
Answer:
A, B, C, D, F, G
**all except on a gene :)**
On my test Pls Help
What is the difference between a hydrogen bond and a covalent bond?
A Covalent bonds are when atoms share electrons while hydrogen bonds have lost or stolen electrons
B Covalent bonds are between two ATOMS while hydrogen bonds are between two MOLECULES
C Hydrogen bonds are when atoms share electrons while covalent bonds have lost or stolen electrons
D Hydrogen bonds are between two ATOMS while covalent are between two MOLECULES
"You use your entire body weight worth of ATP for energy EACH day!"
How can this be true when you don't eat your body weight worth of food each day?
A Lysosomes digest the used up ATP so it can be reused continually
B ATP is "recycled" each use by using energy from food to attach a phosphate back on making ADP
C Fats and phospholipids use enzymes to turn ATP into ADP
D Energy from food is used to attach a "P" group back onto the ADP so it is usable again
What concept is demonstrated by the "lock and key" model?
A Membranes will "lock" up food/water until the right "key" allows it out
B That the shape or proteins and substrates is specific and essential to protein function
C How only certain information is "unlocked" in the nucleus
D The method by which ions are transported through the "door" of the membrane
Answer:
Explanation:
Bonds form when atoms share or transfer valence electrons. In a covalent bond, two atoms share one or more electrons. Water is a polar molecule. A hydrogen bond is a relatively weak bond between two oppositely partially charged sides of two or more molecules.
what is property Around a restaurant called
Answer:
I don't understand your question
Type fast if you don’t mind thanks!!
The _________ is a large structure that directs the cell's activities.
(please help me)
Answer:
Nucleus
because it's the structure directs all of the cell's activities, including reproduction.
Which is one function of a protein molecule?
What’s the answer so confused
Answer:
0
Explanation:
1/3 x 21 = 7
1/1 x 12 = 6
7 - 1 = 6
6 - 6 = 0
justify how birds belonging to different species might all share a common ancestor.
Answer:
When two different species having similar ancestors evolve to become different is called divergent evolution.
Birds belonging to different species might all share a common ancestor are also based on divergent evolution. Animals undergo divergent evolution for several reasons such as enviornmental changes and existance or absence of predators.
Some animals or birds adapt according to enviornmental changes for their survival and presence of predators affect the evolution of animals or birds to protect themselves from predators.
For example: Galapogas finches undergo divergent evolution in which they have same ancestors but radiates into different species such as medium ground finches, woodpecker finch, and mangrove finch.
Explain how the discoveries by Rosalind Franklin helped Watson and Crick build an accurate model of DNA
Explanation:
n 1952, Rosalind Franklin produced an image of DNA that suggested it contained two strands twisted in a double helix with a phosphate backbone and bases inside.Franklin calculated the diameter of DNA, the distance between strands and bases, the angle of the helix, and the number of bases per coil.Watson and Crick used this information to build and accurate model of DNA.
Answer:
here is the topic information
In 1952, Rosalind Franklin produced an image of DNA that suggested it contained two strands twisted in a double helix with a phosphate backbone and bases inside.
Franklin calculated the diameter of DNA, the distance between strands and bases, the angle of the helix, and the number of bases per coil.
Watson and Crick used this information to build and accurate model of DNA.
Explanation:
edg2020
What is NOT true about Pure substances.
O they can be elements or compounds
O they can be homogeneous or heterogeneous
O they are made of only one type of matter
O all of the statements are true
Describe 3 main organelle differences between plant and animal cells.
Answer:
chloroplasts, the cell wall, and vacuoles.
Explanation:
HOPE THIS HELPS
Plz hurry if u can. What is the momentum of a 100-kg football
player running north at a speed of 4 m/s?
What factors should scientists consider when creating a plan to conserve the species?
Answer:
Educate your family about endangered species in your area.
Recycle and buy sustainable products.
Reduce your water consumption.
Reduce your personal footprint.
Do not buy plastic products.
Pressure your civil servants.
Volunteer your time to protect the wildlife in your area.
Explanation:
What process do cells use to release energy without oxygen? *
cellular respiration
O digestion
O fermentation
O photosynthesis
Photosynthesis is a process which uses light energy, convert it into chemical energy and uses it to release energy without oxygen. Therefore, option (D) is correct.
What is photosynthesis?Photosynthesis is a process that plants and other organisms utilize to transform the energy from light into chemical energy. This chemical energy can then be used to fuel the activities of the organism later on through a process called cellular respiration.
Plants absorb carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis. Water is oxidized, meaning it loses electrons, while carbon dioxide is reduced, gaining electrons, within the plant cell. This converts water to oxygen and carbon dioxide to glucose.
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21.5 grams of potassium Dichromate is dissolved in water to make 650.0 mL of solution. What is the concentration of the potassium ions in the above solution?
Answer:
30% concentration
Explanation:
:)
Mixtures will not be represented by a_____
Answer:
symbol/chemical formula
Explanation:
Which cross section best represents the valley shape where a rapidly flowing stream is cutting into the bedrock in a mountainous area
Answer:
D. The inverted triangle like
A raccoon needs three fish a day to survive. A Fish needs 11 phytoplankton 1 point a day to survive. How much phytoplankton does a raccoon need to survive a day?
Answer:
33
Explanation:
if one fish needs 11, then you multiply 3 by 11, and that gives you 33.
Explain how the method of mark and recapture works to determine population size.
Answer:
A number of members of a population are capture, tagged, and released. At a later time, the sampler returns and captures a set number of members of the population and determines the ratio of tagged to untagged individuals. The ratio of tagged to caught individuals is then approximately equal to the ratio of originally tagged individuals to the total population.
edge 2021
12. A student has a brand new pencil with a mass of 120g. One week later,
after sharpening it a few times, the pencil becomes shorter and it's mass is now
only 90g. Is this an example of a physical or chemical change?
Where is the other 30g of mass from the pencil? Be specific/give details.
Answer:
Water is a polar molecule because one area is ________________ and another area is ______________________.
Explanation: