Answer:
One of the main advantages of using a single blind study in this case is that she will have uneffected people to compare to the ones who took the medicine
Explanation:
Using a single-blind experiment in testing the new anti-depressant medication offers the advantage of minimizing potential bias in the participants' responses, which could arise from their knowledge of whether they are receiving the actual medication or a placebo.
In a single-blind experiment, participants are unaware of whether they are receiving the medication or the placebo. This reduces the likelihood of placebo effect and experimenter bias. Participants' psychological and behavioral responses are more likely to be genuine and unbiased since they lack knowledge of their group assignment.
This strengthens the study's internal validity by improving the accuracy of evaluating the true effects of the anti-depressant medication without the influence of participant expectations or experimenter interference.
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How does nondisjunction cause chromosome number disorders.
Answer:
Disorders of chromosome number include the duplication or loss of entire chromosomes, as well as changes in the number of complete sets of chromosomes. They are caused by nondisjunction, which occurs when pairs of homologous chromosomes or sister chromatids fail to separate during meiosis.
Explanation:
1. Describe what DDT is and how does it impact the food web. 2. Do you think humans health can be affected by hazardous bioaccumulates in an ecosystem? Make sure you explain using a statement from the reading. 3. Do you think DDT is the only bioaccumulate that can affect the food webs of an ecosystem?
Answer:
1. DDT may alter the central nervous system of the animals living in an ecosystem contaminated with this synthetic insecticide, thereby affecting their food relationships
2. Yes, indeed it has been shown that the incidence of deaths by cancer is significantly higher in areas where DDT is used as an insecticide. Moreover, it also been shown that this compound alters the endocrine system of most animals.
3. DDT is a synthetic biomolecule insoluble in water and persistent in the environment, and it is therefore a severely hazardous formulation. Persistent organic pollutants include synthetic organochlorine pesticides (for example, DDT), industrial chemicals, especially toxic polychlorinated biphenyls such as those used in insulating fluids for transformers and capacitors and industrial hazardous substances, including polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF).
Explanation:
Dichlorodiphenyltrichloroethane (DDT) is an organochlorine substance originally used as an insecticide, which became infamous due to its environmental impacts. In 1972, the US banned the use of DDT; however, there are countries that still use it as an insecticide for the control of mosquitoes in endemic malaria areas.
The biosphere is best described as the regions of Earth that support _______.
Answer:
The answer is All Life
Explanation:
Hope that helps!
Answer: fossil fuels are easily renewed
Explanation:
ezzzzz plus i did it lolololol
What is the purpose of the polymerase chain reaction.
PCR, or the polymerase chain reaction, is a chemical reaction that molecular biologists use to amplify pieces of DNA. This reaction allows a single or a few copies of DNA to be replicated into millions or billions of copies.
What is most likely the author’s purpose in capitalizing the word “Death” in paragraphed 7
Answer:
Hi this question can be only answered by you because we don't know what book your reading. It's not that but its your own opinion and so we can't answer that.
Explanation:
why red blood cells are small in size
Answer:
When there is a lack of hemoglobin in a red blood cell, the cell is smaller in size and can carry less oxygen.
Answer:
When there is a lack of hemoglobin in a red blood cell, the cell is smaller in size and can carry less oxygen.
What model shows trophic
levels of an ecosystem?
A. An evolutionary tree
B. An energy pyramid
C. The hierarchy of an organism
Answer: The correct answer to this question is B: An energy pyramid.
Explanation: An energy pyramid is a diagram that compares the energy used by producers, primary consumers, and other trophic levels.
1 (1 point)
What is another term used to identify phospholipid bilayer?
Cell envelope
Cell membrane
All choices represent the phospholipid bilayer.
Selectively permeable membrane
Answer:
C) All choices represent the phospholipid bilayer
Explanation:
:)
Based on this picture, how do you think a DNA molecule makes a copy of itself? (Hint: Look at the bottom two “rungs” of the ladder.)
The figure is not found here but DNA makes copies of itself by a semiconservative process. It is part of DNA replication.
What is DNA replication?DNA replication refers to the process by which a DNA molecule multiplies to produce two identical DNA molecules.
The DNA molecule is a double helix that may be considered a ladder, where pairs of nucleotides are the ladder's rungs.
DNA replication is semiconservative because the new DNA molecules have a new DNA strand and one original strand.
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Which describes the role of carbon dioxide in photosynthesis?I will give brainliest!
Answer:
now it should
Explanation:
Among the different forms of electromagnetic radiation emitted by the sun, which form is absorbed by plants for photosynthesis?.
Answer:
visible light is the em radiation absorbed by plants for the photosynthesis process.
The form of electromagnetic radiation that is absorbed by plants for photosynthesis is known as visible light. This is also known as photosynthetically active radiation (PAR).
What is Photosynthesis?Photosynthesis may be defined as a type of process through which green plants and some photosynthetic algae synthesize their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.
Visible light lies in the visible spectrum of wavelength from 400 to 700 nm. This visible spectrum is a system where we study the properties of light. This spectrum defines the relationship between energy and wavelength.
Therefore, the visible light or visible spectrum is the form of electromagnetic radiation that is absorbed by plants for photosynthesis.
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Carbon can make up to ___ bonds
a. 1
b. 2
c. 3
d. 4
Answer:
Carbon can form up to 4 bonds, so the answer will be *D.*
When returning from open sea and you see a red buoy, how should you respond?.
You should respond when you see a red buoy by keeping the buoy on the right.
What is a Buoy?This is an object which is used as an anchor float and serves as a navigation mark positions of submerged objects to prevent danger.
The red buoy which means movement to upstream must be kept on the right for proper monitoring by others.
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Best awnser gets Brainliest! Answer ASAP!
How are cells and/or tissues are affected by the PRKN protein when it mutates into parkinson's disease?
What happens to these cells and tissues as a result?
Answer:
cell got damaged I think
FURRY FURSONA TEST. ill tell u ur fursona when ur done : whats ur fav animal ,do u like robots or music,whats ur fav element select from these i put out fire,water,earth, and air
Answer:
yee ha
Explanation:
Answer:
my fav animal is artic fox i like music my fave alement is fire
Explanation:
Rhinoceroses are being poached at a rate of two or three a week in Africa and Asia. Which type of diversity is being lost at the population of rhinoceroses becomes very small?
Answer:
Genetic Diversity
Explanation:
I learned this in my biology course
Answer:
B
Explanation:
punnett square simple definition
Underground there are plates within the Earth. These plates are responsible for Earthquakes. When certain plates move, it creates a seismic wave that carries energy within the rocks and soil. What is the most likely result of the wave being transferred from the rock/soil to the air? Group of answer choices
Answer:
Propagation waves that can alter the winds and generate tornadoes, even these waves can also propagate over water surfaces and generate large masses of water that are expressed in forms of giant waves or tsunamis.
Explanation:
In some specific cases, fissures, cracks, natural disasters, species extinctions, vibrations and earthquakes, or schisms are generated due to the propagation of seismic waves.
A cell undergoes meiosis. How do the gametes it produces compare with the original cell and with one another? a. The gametes are genetically identical with the parent cell and with one another. B. The gametes have half the chromosomes of the parent cell, and are genetically identical with one another. C. The gametes have half the chromosomes of the parent cell, and are genetically different from one another. D. The gametes have one fourth of the chromosomes of the parent cell, and are genetically identical with one another
Answer:
i say this is a the gametes are genetically identical
Explanation:
The gametes have half the chromosomes of the parent cell, and are genetically identical with one another. their not different
Although the genes that cause LHON are found in cells throughout the body, LHON especially affects specific cells in the eyes and heart. Why do you think that tissues with these cells are among the first to fail as a result of defective mitochondria? How could a mitochondrial defect be related to vision and heart problems?Cite evidence
Answer:
Leber’s hereditary optic neuropathy (LHON) is defined as a disorder caused by a mitochondrial mutation that affects the visual and heart cells.
A defective mitochondria is the primary cause of the LHON because it causes mtDNA is involved in the encoding of ubiquinone oxidoreductase (subunits of NADH) that is the first complex of the electron transport chain. So, any defect or mutation in mtDNA causes neuronal defects.
Mitochondrial defect due to mutation in amino acid exchanges in ubiquinone oxidoreductase affects optic nerves causing loss of retinal ganglion cells (RGCs) and their axons that leads to vison loss.
Mitochondrial biogenesis is the process in which mitochondrial ATP produced, and ATP transfer to heart and defect in mitochondrial biogenesis causes defect in heart cells.
Why is biology so fun?
Answer:
Biology is a fascinating subject in and of itself. It has been my favorite subject to read about and study since I was an incredibly young child. Biology is unique in its complexity and the way living things interact with one another and with their environment. It is fascinating to consider that many of Earth's rocks and minerals came from living things. Chalk and limestone are the remains of small aquatic creatures, particularly shellfish, which died and fell to the seabed, where they were buried and compressed into rock. A limestone or chalk that has been subjected to elevated temperatures and pressures, for example, is metamorphosed into marble. The fact that flints started out as sponges is less well known. Mineralogy and geology on Earth would be quite different if there were no living things.
I hope this helps you
:)
In eukaryotic gene regulation, rna interference occurs through.
explain molecules in your own words
Answer:
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.
Explanation:
mass is measured in 1._______
amount of 2._______
mass cant 3._________
weight is measured in 4._______
force of 5.__________
weight can 6.________
# 1 Mass is measured in kilograms
# 2 Amount of newtons
# 3 Mass cant be destroyed or created
# 4 Weight is measured in newtons
# 5 Force of gravity
# 6 Weight can be measured
I NEED HELP PLZ!!!!!!!!!!!!
What would the environment of a polar bear include?
A. The temperature of the air, the amount of snow cover
B. The temperature of the air and the number of other polar bears
C. The type of food he eats
D. All of the above are part of the polar bears environment
Answer:
I believe its all of the above.
Explanation:
A fossil of an ancient palm tree found in Alaska is an indication that Alaska once had
what kind of climate in its history?
Cold winters and hot summers
warm and humid throughout the year
dry and hot throughout the year
Cold winters and mild summers
Answer: Warm and humid throughout the year
Explanation: Just took the test
what makes iconic bonds?
Answer:
Hello there!
Explanation:
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
Hope this helps!
let me know if wrong
(Being honest this is from google, so I accept any punishment coming my way :) thank you)
4 points
Concrete has a density of 2.30 grams per centimeter cubed. What is the
mass of a concrete block in kilograms that is 1000.Ocm x 1000.Ocm x 15.0
cm? *
Answer:
Explanation:
density=2.30 g/cm^3
volume=1000.0 cm*1000.0 cm*15.0 cm=15000000
now we know that
d= m/v
therefore
m=d*v
m=2.30*15000000
m=34500000 g
now we have to convert grams into kg
1kg=1000 g
34500000 g=34500000/1000
34500000 g=34500 kg
PLEASE!! HELP ME!! PLEASE!! HURRY!! I AM BEING TIMED!! PLEASE HELP ME FAST!!
1. What do cells need in each stage to move on to the next?
2. Why might it take a cell a while to complete the cell cycle?
3. What is cancer? What are tumors? How do we treat them?
4. What are the different stages of mitosis? What do they look like?
5. What are the different parts of the chromosome? Chromatid, centromere, DNA etc..
6. Why does DNA need to be condensed into a chromosome?
7. What is the purpose of histones in organization?
8. What are the different levels of organization within a chromosome? DNA, chromatin, histones, nucleosomes etc.
9. What are the 4 phases of the cell cycle?
10. What are some key things that happen in each phase?
11. What is the purpose of the various checkpoints?
12. What do the following checkpoints ensure? G1/S, S/G2, G2/M?
13. Where is the Restriction Point and what does that mean?
Answer:
Explanation:
1. living organisms in them
2. skip
3. a disease caused by an uncontrolled division of abnormal cells in a part of the body. a swelling of a part of the body, generally without inflammation, caused by an abnormal growth of tissue, whether benign or malignant.
4. Interphase
Prophase
Prometaphase
Metaphase
Anaphase
Telophase
5.
1)
Pellicle and matrix
(2) Chromonemata
(3) Chromomeres
(4) Centromere
(5) Secondary constrictions
(6) Satellite bodies
Approximately what proportion of the dna in the human genome codes for proteins or functional rna?.
Answer:
1.5%
Explanation: