Answer:
D) to prevent bias in the data collection
Explanation:
If the researchers told the patients of the pill they took, it could create bias.
Bias can make the experiment's outcome end in a different way because of the way it influences the people taking the pill.
Bias can create another factor in an experiment, making your results unreasonable due to the addition of another factor.
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which structures are found only in the animal cell?
Answer:
Centrioles
Explanation:
Centrioles: Animal cells contain organelles known as centrioles, which are not present in plant cells.
Answer:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not
Explanation:
:)Hope this help you out friend:)1 the off spring of an organism produced through asexual reproduction is always-
2 if two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is-
3 all of the offspring or an organism have the same genetic material identical to the parent organism. From this, we can conclude that this organism-
4 which of the following is likely to experience regeneration?
a turtles
b starfish
c babies
d birds
Questions with Answer Options:
1 the off spring of an organism produced through asexual reproduction is always-
genetically identical to its parent.created by vegetative propagation.made of cells with a cell wall.different from its siblings.2 if two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is-
identical to only one parentidentical to all of its siblingsa unique combination of traitsthe recessive traits of each parent3 all of the offspring or an organism have the same genetic material identical to the parent organism. From this, we can conclude that this organism-
makes its own food.is unicellular.lives in a marine habitat.reproduces asexually.4 which of the following is likely to experience regeneration?
a turtles b starfish c babies d birdsAnswer:
genetically identical to its parent.a unique combination of traitsreproduces asexually.starfishExplanation:
1. Asexual reproduction is when an organism produces offspring without a mate. The offspring are always genetically identical to the parent.
2. Sexual reproduction is when two organism produce an organism through the fusion of gametes. The offspring's genetic make up is a mixture between the two parents - a unique combination of traits.
3. If all the offspring of an organism have the same genetic material that is also identical to the parent organism, the organism must reproduce asexually.
4. Starfish can regrow arms that have become detached from the central cavity - a process called regeneration
QUESTION 1:
Asexual reproduction is a type of reproduction that involves only one parent organism to produces offspring. The offspring are always genetically identical to the parent.QUESTION 2:
Sexual reproduction is a type of reproduction in which two organism produce an organism through the fusion of gametes. The offspring's genetic make up is a mixture of that of the two parents, which produces unique combination of traits.QUESTION 3
Offsprings produced as a result of asexual reproduction will possess similar genetic material as the parent cell Hence, if all the offspring of an organism have the same genetic material that is also identical to the parent organism, the organism must have reproduced asexually.QUESTION 4
Starfish, also called, sea stars are star-shaped echinoderms that have the ability to regrow arms. This unique process is called regeneration.Learn more at: https://brainly.com/question/18275681?referrer=searchResults
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During which portion of the cell cycle does the amount of dna in the cell decrease by half?.
Answer:
Through this remaining period, until the conclusion of mitosis, the cell contains 92 chromatids. Only the G1 phase precedes the S phase and has half the amount of DNA as the rest of the cell cycle; therefore, cells in the G1 phase have the least amount of DNA.
In the cell cycle, DNA becomes half at the division phase, or M phase (mitotic phase). As a result, each daughter cell gets a copy of the genetic material of the parent cell.
How does DNA number decrease in cell division?In the S phase, DNA duplicates, and as a result, the DNA number becomes double. In the case of humans, there are a total of 23 pairs of DNA, or 46. In the S phase, the DNA number becomes double, which is 92. The chromosome number remains the same in S phase that is 46. Chromosome numbers are counted by their centromere number. The number of centromeres and chromosomes are same.
In the division phase (M phase), the cell divides and the duplicated chromosomes are separated to make daughter cells. As a result, the 92 DNA of a cell are divided into 46 DNA. Each daughter cell has 46 DNA, or 23 pairs in M phase. In mitosis each daughter cell has 46 DNA, while in meiosis each daughter cell has 23 DNA.
Hence, in M phase and especially in anaphase, the DNA becomes half.
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Which of the following statements regarding water conservation is not true? a. Only about 1% of Earth’s water supply is usable for human consumption. B. Over half of the states predict water shortages by 2013. C. While environmentally beneficial, water conservation is a costly endeavor. D. Failure to conserve water will lead to more water contamination.
Answer:
d
Explanation:
ive had this question on my test
Answer:
its c
Explanation:
The plant roots being underground respire by using which mechanism?
(b) The amount of CO2 be the lowest in which one and why?
Answer:
hi my self Avantika
Explanation:
can we be friends
Write the major phyla under the kingdom fungi
Answer:
Chytridiomycota, Zygomycota, Ascomycota, Basidiomycota, and Glomeromycota.
Explanation:
Which of the following statements is true? *
1. Autotrophs take in food from outside themselves.
2. Consumers are autotrophs.
3. Heterotrophs produce their own food.
4. Consumers are heterotrophs.
Feelings of being lightheaded or dizzy are signs of low sugar in your blood, officially called _____________
Answer: hypoglycaemia
Explanation:
Answer:
pressure low disease which make people unconscious
A root emerges from a seed because of the force of
Answer:
water against the seed coat.
Explanation:
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Answer:
Panzola =x .... Pantra =Y ..... Neuralgia = Z
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Why do we compare the dermal tissue of plants to human skin? Explain your answer.
Answer:
They are like each other
Explanation:
Your skin covers your body, protecting it from abrasion, water loss, and infection and secreting conditioning substances. The epidermis of a plant serves similar functions. Usually a single layer of closely-packed cells, epidermal tissue covers leaves and young stems and roots of vascular plants. Most epidermal cells secrete waxy substances which form a cuticle, or waterproof covering, over the aerial surfaces of the plant, such as the stems and leaves. The cuticle also resists viral, bacterial, and fungal invasion.
In this assignment, you will create a poster that models how the circulatory and respiratory systems work
together to ensure homeostasis through gas exchange. The poster should highlight the roles of
components in each system as well as the interaction between the two systems. You will also write two
paragraphs describing the contents of your poster.
Answer:
I hope this helps those who are struggling with it :) I got 100% and please, rewrite in your own words.
Explanation:
To supply the body with oxygen, the respiratory system collaborates directly with the circulatory system. Inhaled oxygen travels into blood vessels where it is subsequently circulated to tissues as well as cells through the body's circulatory system.
What is respiratory systems?In both animals and plants, the respiratory system would be a biological system made up of particular organs and structures that are employed for gas exchange. Based on the size of the organism, its habitat of living, and its evolutionary background, the anatomy or physiology that cause this vary drastically.
What is circulatory system?A human or other vertebrate's complete body is circulated by a system of organs called the blood circulatory system, that includes the heart, blood arteries, and blood itself. It contains the heart and blood vessels-based cardiovascular system, often known as the vascular system.
The nasal cavity, larynx, pharynx, epiglottis, trachea, bronchioles, bronchi, alveoli, as well as lungs are all components of the respiratory system.
The primary function of the respiratory system would be to introduce fresh air entering our body while expelling waste gases. After entering the lungs, oxygen travels through your body's bloodstream. The waste gas carbon dioxide has been exchanged for oxygen in each cell in your body.
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1 point
Which of the follow traits did Lucy have similar to Home Sapiens (modern
day humans) *
Pick all that apply!
Steep facial slope
Small canines
Bowl shaped pelvis
Legs longer than arms
Big toe in line with stride
Answer:
Bowl Shaped Pelvis
Explanation:
Lucy stood upright similar to Home Sapiens, this means Lucy would have had a similar like pelvis for the ability to stand
To construct linkage maps, scientists estimate the distance between genes on the same chromosome based on the ______, as indicated by the percentage of recombinant offspring.
To construct linkage maps, scientists estimate the distance between genes on the same chromosome based on the crossover frequency. It is also called recombination.
What is a crossover?Crossover or recombination is the interchange of genetic material between non-sister chromatids during meiosis.
In genetics, this rate of recombination is useful to develop linkage maps (i.e., genetic maps).
These genetic maps are not equal to distance maps, which are constructed based on nucleotide distances.
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Which are found on the right side of the arrow in a chemical equation?
Reactants
Products
Answer:
The right side of the arrow in a chemical equation would indicate the products. Think of it like this: You REACT to stubbing your toe by spilling a glass of water, and it PRODUCES a mess, so you clean it up. The reactants affect the products, or the outcomes of an experiment—or situation.
Where does the urea in the urine come from?
Answer:
Urea is produced when foods containing protein, such as meat, poultry, and certain vegetables, are broken down in the body. Urea is carried in the bloodstream to the kidneys, where it is removed along with water and other wastes in the form of urine.
Explanation:
Location of melanocytes and tactile epithelial cells.
Answer:
The melanocytes and tactile epithelial cells (Merkel cells) are located in the stratum Basale.
Explanation:
Clara bought a beautiful plant for her apartment. Clara lives in a basement apartment that receives very little sunlight. She placed the plant close to the only window in the apartment. After a few weeks, the plant has started to die. Clara is very confused and upset. She gave the plant fertilizer and enough water. Explain to Clara why her plant is dying.
Answer:
The plant is not receiving enough sunlight.
Explanation:
Some plants require direct sunlight for a few hours at a time in order to stay healthy. Because Clara lives in a basement apartment that doesn't receive much sunlight, it is an unsafe environment for a plant to live in. Plants need sunlight to create energy, creating that energy also creates food which allows the plant to consume that food and feed itself. If the plant doesn't receive enough sunlight because it is in a place where not much sunlight goes then it cannot create the amount of food, it needs to survive which will cause it to die slowly. If Clara wants to save her plant, she needs to keep giving it proper fertilizer and water while finding a new location to put it where it can receive all the sunlight it needs to create its food.
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Where do plants get the carbon needed to make glucose molecules during the process of photosynthesis?
a.) from the ground
b.) from the air
c.) from the water
d.) from the sun
Answer:
b.) from the air
Explanation:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
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Which of the following descriptions matches the niche of humans?
A. Primary consumer, tool using, lives in communities
B. Agile, carnivore, sprinter, lives in groups
C. Omnivore, high intelligence, hibernation, high body strength
D. High intelligence, omnivore, tool using, lives in communities
Reset Selection
Humans are the most intelligent species in the whole living system who has social security, tools, cultures, and communities, along with all the humans occupying the tertiary trophic level in the food chain. Thus option D is correct.
What is a niche?Niche can be simply defined as the is the position of the species in the ecosystem regarding every aspect.
Humans are positioned top in the intelligence, feed on plants as well as animals, and have the ability to make tools and communities. So option D is correct.
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Firstly, plant cells have a cell wall that surrounds the cell membrane, whereas animal cells do not. ... These additional organelles allow plants to form an upright structure without the need for a skeleton (cell wall and central vacuole), and also allow them to produce their own food through photosynthesis (chloroplasts).
Answer:
Explanation:
This question appears incomplete. However, one of the main differences (in organelles) between plants and animal cells is the absence of cell wall and chloroplast in animal cells while both organelles are present in plant cells. The cell wall is outside of the cell membrane. The cell wall provides rigidity and support to the plant cell while the chloroplast is the cellular "machinery" for photosynthesis. The chloroplast contains the green pigment called chlorophyll which provides green plants with there colour and assist the plants in absorbing/capturing of sunlight/energy for the purpose of photosynthesis (self production of food by green plants).
Some national companies are banning the use of foods with GMOs.
True
False
Answer:
True
Explanation:
Scientists use genetics to trace the evolution and migration of humans. How do scientists know which populations are older than others
Answer:
Scientists often look at mitochondrial DNA to determine these chronological relationships. Mitochondrial DNA mutates at a relatively predictable rate, often referred to as the "molecular clock". By comparing the amount of mutations between groups compared you can determine which groups have been around longer and therefore have acquired more mutations.
Explanation:
Describe the function of each organelle.
Cytoplasm
Cell wall
Chloroplast
Centrioles
Answer: Cytoplasm: Is a semi- fluid substance. It is present between the cell membrane and the nucleus. Water is the main component of the cytoplasm. Cytoplasm dissolve in it the molecules released by organelles present in it. It acts as a reservoir for dissolution of molecules not required instantly by the cell to conduct any metabolic activity except lipids. It can dissolve proteins, glucose etc. Pathways like glycolysis takes place in cytoplasm.
Chloroplasts: It is a cell organelle found in plants. The function of chloroplast is to carry out photosynthesis in plants. It uses pigment which traps the sunlight. It converts the sunlight energy into chemical energy in the form of ATP and NADPH.
Cell wall: It is the semi- permeable layer outside the plant, fungi, algae and bacteria. It's main function is to provide structural support to the cell. It facilitates the import and outport of molecules in and of the cell necessary for cell function.
Centrioles: They are the cell organelles which are visible during the cell division.The centrioles are the sites where the spindle fibers originate. These spindle fibers gets attach with the each membrane of the chromosome pair and facilitate their separation during cell division.
Explanation:
What is the first type cell that exist in this world?
Answer:
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primitive prokaryotic-like cells
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Write a scientific explanation about which type of spawning is more successful
Answer:
The findings show that single spawning fish are more successful than first-time repeat spawners their age, pointing to a tradeoff between mortality and reproduction. Single spawners die after reproduction, so they give everything they have to their one batch of eggs.
Explanation:
Which of the following is not a source of groundwater pollution? a. Landfills b. Septic tanks c. Smoke stacks d. Fertilizer Please select the best answer from the choices provided A B C D.
Where does the water cycle start?
The mass of an empty cylinder is 200 grams. The mass of the cylinder with the mystery liquid is 250 grams. If the volume of the mystery liquid is 100 ml, what is the density of the liquid?
Show your work
Answer:
ok,so the mass of mystery liq.+cylinder is 250g
cylinder alone is 200g
mystery liquid's mass=50g
d=m/v
50/100
=0.5g/ml
all the characteristics of a prokaryotic cell
Answer:
Explanation:
Prokaryotes lack an organized nucleus and other membrane-bound organelles.
Prokaryotic DNA is found in a central part of the cell called the nucleoid.
The cell wall of a prokaryote acts as an extra layer of protection, helps maintain cell shape, and prevents dehydration.