During an experiment to determine if people with more symmetrical body features have a lower incidence of disease, a researcher first measures the length of several bones in the subject's hands and arms. The device used to measure length does not display a readout of the measurement taken. Instead, a wire connects the measuring device to a computer that records the data. The computer monitor is kept out of sight of the subject and the researcher. Why is such an elaborate device used?a. So that the subject will not know if he or she is part of the control group.b. So that the experiment will be repeatable.c. So that the subject will not be injured by the experiment.d. So that the identity of the subject will remain anonymous.e. So that the measurements are not biased by the researcher.
Answer:
e
Explanation:
The main reason such an elaborate device was used would be to eliminate any element of bias by the researcher.
It is important to eliminate biases when taking measurements so as to ensure the accuracy of the data and the overall outcome of the experiment. If a simpler device had been used in which the researcher manually records the length of the bones, it is possible to knowingly or unknowingly introduce biases or random error into the experiment which will impact the integrity of the data and the outcome of the experiment.
The correct option is e.
*
How many copies of DNA are made when replication is complete?
14 points
O A4
B3
C2
D 1
PLEASE HELP
If guinea pigs, black fur is dominant over white fur. Which of the following alleles could represent the gene for white fur? Hint we use the letter of the dominant trait
B b W or w?
I strongly belive its W Please let me know
Answer:
...
Explanation:
What sea creature is this?
Answer:
i wanna say a stingray but im not 100% sure
Explanation:
Q1. Name the following:
(i) Narrow blood vessel whose walls have a single layer of cells
Answer:
i think just google it for the answer
Answer:
Artery
Explanation:
Tunica Intima
In smaller arterioles or venules, this subendothelial layer consists of a single layer of cells, but can be much thicker in larger vessels such as the aorta. The tunica intima is surrounded by a thin membrane comprised of elastic fibers running parallel to the vessel.
Choose the term that best matches the description given.
Cells that engulf and destroy bacteria _____________.
[tex]\huge\color{pink}{\underline{\underline {Question}}}[/tex]
Choose the term that best matches the description given.Cells that engulf and destroy bacteria _____.
[tex]\huge\color{pink}{\underline{\underline {Answer}}}[/tex]
Cells that engulf and destroy bacteria phagocytes.
Answer:
Cells that engulf and destroy bacteria is " Phagocytes"
Brainliest to the correct answer...plz anser if you know and not just for points
Answer:
i would say false because tree slow down erosion not speed it up
Explanation:
hope this helps :)
If there's anyone who took the test, please help!
What results when there is very heavy competition between the two species?
A) interspecific competition
B) competitive exclusion
C) coexistence
D) evolution
Answer:
it's D
Explanation:
This is because heavy competition drives natural selection which increases evolution.
In this project, you will be designing three graphs based on the information given to you in tables. You must organize the information into graphs and make them clear and understandable. For help on the graphs, go back and read the section in your text on graphing. If you are creating a digital graph your teacher may provide resources or tools to guide you through the digital application. When submitting your graphs make sure to answer the following question for each graph.
Did you finish your line or bar graph?
Did you draw your graph or create a digital graph?
Describe your results.
Did you finish your pictograph?
Did you draw your graph or create a digital graph?
Describe your results.
Did you finish your pie chart?
Did you draw your chart or create a digital chart?
Describe your results.
Answer:
I tried but I could not get if
Explanation:
try Google or any other app
Which is the best hypothesis for the scientific question “How does light intensity affect the rate of photosynthesis?”
Answer:
A hypothesis for this question could be: If there is more light intensity on a plant then, there would be higher rates of photosynthesis.
Explanation:
Answer:
The answer to this question would be C.) If the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease.
Explanation:
Hope this helps :) !!!!!!!!!!!!!!!!!
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1. A piece of pure gold (Au) has a volume of 50 cmWhat is its mass?
Density of Some Metals
Metal
Density (g/cm3)
Copper
8.96 (g/cm)
Iron
7.87 (g/cm)
Lead
11.36 (g/cm)
Magnesium
1.74 (g/cm)
Silver
10.49 (g/cm)
Zinc
7.13 (g/cm)
A. 0.38 g
B. 2.63 g
C. 69.3 g
D.950 g
Answer:
96.5g
Explanation:
Given parameters:
Volume of Au = 50cm³
Density of Au = 19.3 g/cm³
Unknown:
Mass of the gold = ?
Solution:
Density is the mass per unit volume of a compound.
Density = [tex]\frac{mass}{volume}[/tex]
Mass = density x volume
Insert the parameters and solve;
Mass = 19.3 g/cm³ x 50cm³ = 96.5g
What is the correct answer?
Answer: it has to to be the last one one cause i added all the numbers and got 1,200 but when i sutracted them i did get those numbers so it must be the last one
Explanation:
The diagram shows a reflex arc. Name parts P and Q shown on the diagram above.
Please help.
Answer:
P - synapse
Q - Relay neuron
Explanation:
A synapse, easy to remember as a neural junction, is the site where the transmission of electric impulses occurs. This occurs between two neurons or between a neuron and a gland or muscle cell. So in this scenario when we poke the finger it fires an electric nerve impulse that gets to the P spot that is a synapse and gets transmitted to the relay neuron. A relay neuron is there to receive the signal from one neuron and then transfer it to another interneuron resulting in the signal being received by a motor neuron so that we can react to the stimulus.
Recall what you know about nervous tissue to answer the following questions. Nervous tissue can generate and conduct ____ signals that control the body.
answer choices are:
chemical
electrical
thermal
Answer:
Nervous tissue can generate and conduct electrical signals that control the body.
Explanation:
The neuron is the specialized cell that provides function to nerve tissue. Given the structure of the neuron, this cell is capable of creating and conducting information in the form of electrical impulses or signals, by depolarizing its cell membrane and generating action potentials.
The information generated and transmitted by the neurons allows the nervous system to obtain internal and external information of the organism, as well as to control all the body functions.
The other options are not true because nerve tissue does not generate or conduct thermal or chemical signals to perform its function.
Answer:
Part 1: electrical
Part 2: A, B, E
Explanation:
did it on edg.
Describe the phases of the moon.
Answer:
Here
Explanation:
Answer:
Waxing Cresent ( when the moon is growing in size to reach it's maximum fullness), FIrst Quarter (When the moon is one quarter full), Waxing Gibbous (When the moon is over half full), Full Moon (When the moon is completley full), Waning Gibbous (When the moon is almost half dark), Last Quarter (When the moon is half dark), Waxing Cresent (When the moon is a small cresent shape in the sky), New Moon (When the moon is completley dark)
Explanation:
Hope this helps!! :)
what are nutrients and water absorbed by?
Answer
Your lower intestine of your body
What happened when Earth's first atmosphere collapsed? Will mark you as brainliest!
- it created oxygen
-it formed the oceans
-it triggered an ice age
-it fell as rain, watering the earliest plants
Explanation:
solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe. The lack of atmosphere would chill the Earth's surface.Plants and land animals would die
Identify the structure labeled X in the diagram
Polypeptide (protein) made up of amino acids
DNA make up of nucleotides
DNA made up of amino acids
Messenger RNA made up of nucleotides
Answer:
first one
Explanation:
DNA is what is in the nucleus not outside and mRNA is the bottom
Which of the following statements is true of both binary fission and mitosis?
a.) They both produce four daughter cells with one set of chromosomes.
b.) They both produce two daughter cells with complete DNA.
c.) They both are used primarily for asexual reproduction.
d.) They both involve the division of a single nucleus.
Answer:
i think c is the right answer
Answer: B
Explanation:
Food is moved through the esophagus into the stomach by
involuntary muscle contractions called?
Answer:
peristalsis
Explanation:
when food contracts down the esophagus
Answer:
peristalsis
Explanation:
Which of the following words means limp or lacking in turgor?
Besides helping to discover the structure of DNA, describe two other contributions Rosalind Franklin made to the world of science.
Answer: Rosalind Franklin discovered the density of DNA and, more importantly, established that the molecule existed in a helical conformation. Her work to make clearer X-ray patterns of DNA molecules laid the foundation for James Watson and Francis Crick's suggestion that DNA is a double-helix polymer in 1953.
Explanation:
Rosalind Franklin made numerous contributions to science in addition to helping to discover the structure of DNA, and in the field of virology, in coal-based materials, by using X-ray crystallography, in agriculture, etc.
What is the contribution of Rosalind Franklin?She was one of the greatest scientists who made significant contributions to the field of DNA by using X-ray crystallography, and apart from that, she also made contributions to the field of virology. As X-ray diffraction facilitates the study of the structure of viruses such as the tobacco mosaic virus and the polio virus and helps in understanding the replication of viruses, it is also helpful in the study of the structure of coal and other carbon-based materials.
Hence, Rosalind Franklin made numerous contributions to science in addition to helping to discover the structure of DNA, and in the field of virology, in coal-based materials, by using X-ray crystallography, in agriculture, etc.
Learn more about Rosalind Franklin here.
https://brainly.com/question/6707318
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When we breathe, we inhale oxygen and release carbon dioxide. What cell process does our body use the oxygen for?
A. Photosynthesis
B. Cellular respiration
C. Osmosis
Answer:
Cellular respiration
Explanation:
This is because if you see Photosynthesis is used for plants to get a food source from the Sun. Osmosis is the movement of chemicals from a less converted membrane to a more. I think i said that wrong but. I am sure it is cellular respiration which is the despirsion of waste products. So yeah Answer is Cellular respiration
When you mix salt with water in a beaker, the salt is no longer visible. What
happens to the salt?
A. The salt changes state from a liquid to a gas.
B. The salt reacts with the water to make a new substance.
C. The salt dissolves in the water.
D. The salt is destroyed by the water.
please help, i’ll mark brainliest if you get it right! please please only answer if you know the answer though, don’t guess i’m taking a test and i can’t fail as it’s the last one before the quarter ends ( tomorrow ) id appreciate it!! thank youuu
Answer:
C. The salt is dissolved by the water
Explanation:
When ionic compounds dissolve in water, the individual ions separate and get surrounded by water molecules—a process called solvation. Because the salt ions are charged, they dissolve much better in a polar solvent, which is also slightly more charged than a nonpolar solvent
Hope this helped, Have a Great Day!!
Carbon, nitrogen, and phosphorus are examples of what?
Answer:
A natural process in which elements are continuously cycled in various forms between different compartments of the environment (e.g., air, water, soil, organisms).
Hope this helps!
Answer:
Carbon Cycle. Nitrogen cycle. Photsphorus cycle. Water cycle. The carbon cycle includes the uptake of carbon dioxide by plants through, its ingestion by animals and its release to the atmosphere through respiration and decay of organic materials.
Explanation:
A natural process in which elements are continuously cycled in various forms between different compartments of the environment (e.g., air, water, soil, organisms). Examples include the carbon, nitrogen and phosphorus cycles (nutrient cycles) and the water cycle.
What water cycle process moves water from land to streams
Answer:
The answer would be runoffs
Explanation:
Although water coming from land to streams isn't directly tied to the water cycle, runoffs are due to gravity.
May I have brainliest please? :)
Read the article and use the information to answer the question that follows.
Forensic DNA
How can DNA be used to help solve a crime?
Answer:
Each person’s DNA is unique.
Scientists use variable regions in DNA to create a DNA profile.
DNA samples can be taken from blood, bone, hair, or other body tissues and
products.
DNA from a crime scene can be compared to DNA from a suspect.
DNA typing can be used to solve old cases.
Explanation:
edge 2021
DNA can be used to solve a crime as the sample of the DNA of a person can be compared to the evidence that's gotten from a crime scene.
Deoxyribonucleic acid which is commonly referred to as DNA is the molecule that has all the information that's vital to build an organism. Each person’s DNA is unique.
DNA contains the genetic information of everyone. DNA samples can be taken from blood, bone, hair, or other body tissue.
To solve a crime, DNA from a crime scene can be compared to DNA from a suspect. If the DNA collected is the same as the one that's seen at the crime scene, then it shows that the person is responsible for the crime.
Read related link on:
https://brainly.com/question/19276361
Which of the following is true regarding tissue?
a)
An example of tissue is the digestive system, which helps break down food
particles for organisms to obtain energy and nutrients.
Ob) Tissue is a group of specialized cells that work together for a common
function and form organs.
O c) Sponges are the only animal made of tissue and made of haploid cells.
d) Tissue is a group of diploid molecules bonded together chemically.
Answer:
True: b) Tissue is a group of specialized cells that work together for a common function and form organs.
Explanation:
Cells are the smallest units of life, they may be either unicellular or multicellular. Unicellular organs have a single cell capable of carrying out all of the functions necessary for its survival. Multicellular organisms are more complex, and require the work of multiple different cell types.
Their cells become differentiated- where they undergo certain processes to become specialized, and gain maturity. Groups of specialized cell types form tissue; these each have varying functions over time. Organs consist of two or more tissue types that are specifically organized to carry out a function.
Answer:
b) Tissue is a group of specialized cells that work together for a common
function and form organs.
Explanation:
Sponges are the simplest type of animal therefore they have a few different features than other animals. Like all animals, sponges are diploid, multicellular, heterotrophic, reproduce sexually, mobile, and don't have a cell wall. They are different in that their zygotes do not form into a blastula and they are not made of tissue.
Also, i took the quiz :)
what are the most common types of organisms in the ecosystem.
Answer:
producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.
Explanation:
Hope this helps
3. What does the heading
represent?