Answer:
A because one of the key terms is the transfer of alleles from one population to another
Elodea is a plant that lives in water. Like all plants, elodea can make its own food through
process called photosynthesis. Oxygen gas is also produced during photosynthesis.
Photosynthesis can only happen in the presence of light. To measure the rate of
photosynthesis, a piece of elodea can be placed in an inverted test tube filled with a
sodium bicarbonate solution. Oxygen gas produced by photosynthesis will collect at the
top of the test tube.
A student has designed an experiment using elodea plants. The experimental setup is
shown in Figure 1-4
Which of the setups would serve as the control of the experiment?
Bucket
Lamp
Flashlight High
Natural
Elodea
Sodium
bicarbonate
solution
The controlled variable is kept constant during the whole experiment in all the different study groups. In this experiment, Sodium bicarbonate solution is the controlled variable.
------------------------
During an experiment, the controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
In this experiment,
The independent variable → presence/absence of light reaching the plant. The researcher regulates the amount of light by using different elements such as the bucket, lamp, flashlight, and natural light. The dependent variable → oxygen production through which the researcher measures the photosynthesis rate. The controlled variable → Sodium bicarbonate solution. It provides carbon dioxyde, and must be constant in the four scenarios to avoid an effect on the results.-----------------------
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A pesticide tolerance refers to the a. amount of a pesticide that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace. b. ability of the liver to detoxify a pesticide c. toxicity of the pesticide in the laboratory d. number of pests that are killed by a selected dose of the pesticide
Answer:
a. amount of a pesticide that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace.
Explanation:
Pesticides are chemical substances used to get rid of or kill pests that attack crops on farmlands. These pesticides, although help the farmer to get rid of his pest problem and likely have an increase in yield, are dangerous to human and animal health if consumed.
As set up by the Environmental Protection Agency (EPA), pesticide tolerance is the amount or quantity of pesticide chemical that can be applied to a food and how much of the pesticide that is permitted to remain on the food in the marketplace.
The sympathetic and parasympathetic nervous systems are both part of which division of the nervous system?
the central nervous system
the peripheral nervous system
the somatic nervous system
the autonomic nervous system
Answer:
The answer is D. The autonomic nervous system.
Answer:
(D): the autonomic nervous system
Explanation:
Got it right on edge! Good Luck <3
Identify parts A and C.
Answer:
A. Liver B. Stomach
Explanation:
Liver detoxifies chemicals and metabolize drugs, stomach mixes the food and grind it
A: Liver
C: Stomach
hope it helps!!!!
1.Explain what makes a scientific experiment reliable. Be sure to include at least three reasons to support your answer.
2.During research, why is it important to use peer reviewed evidence when collecting background information during a scientific investigation?
An experiment is reliable when its repetition produce always the same result. In science, peer review is fundamental because this process ensures that there is not misleading data that may lead to erroneous results.
In sciences, reliability is a term used to evaluate the quality of research. Reliability refers to the probability that an experiment or result is correct, thereby preventing and mitigating failures over time.
An experiment whose successive repetitions conduct the same result is 100% reliable.
Three examples of reliability in science: the same measurement of the size of the leg of a spider. the observation of the same behavior of birds populations on different days and at different times of the day. the same byproducts from a given chemical reaction when an experiment is repeated two or more times.
Peer review is the most widely accepted process used to validate scientific data. This process (peer review) is fundamental to facilitate the growth of scientific knowledge.
During peer review, independent scientists assess the originality, reliability, and significance of a scientific work before its publication.
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Answer:
i hade this assesement i aced it but this is only one part of it there is more
Explanation:
Structure of DNA:
Question 6
What is the function of DNA?
Select one:
To encode instructions for traits.
To help the cell move.
To store energy for the cell.
To protect the cell.
Answer:
My friend, the answer is to encode instructions for traits.
Which is defined as a cell structure made of DNA that gives all of the master instructions for the cell?
a. centromere
b. chromosome
c. allele
d. gene
Answer:
a chromosome is a cell structure made of DNA,which is found in the nucleus of a cell.
I hope this helps
If an electric train moves south, which direction does the train smoke go?
answer with intelligence.
no direction
because its electric so there is no smoke produced
if someone is smoking the it will move in south direction xD
what is the drug delivery system for alka seltzer
Answer:
aspirin/citric acid/sodium bicarbonate (OTC)
Explanation:
Which statements describe the synapse? Select all that apply.
It carries information through electrical impulses to the cell body.
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body.
It is the gap between neurons.
It ensures that information travels in multiple directions.
Answer:
A
Synapse, also called neuronal junction, its carries of information through electric nerve impulses between two nerve cells (neuron) or between a neuron and a gland or muscle cell (effector).
Answer:
A
C
E
Explanation:
I just took the quiz on edge
what is photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide,water and minerals
Which characteristics belong to a eukaryote?
is usually multicellular
contains a nucleus
contains one cell type
contains membrane-bound organelles
Answer:
all are correct... it all belongs to eukaryote
Answer:
[tex]{ \sf{ - \: is \: usually \: multicellular}} \\ { \sf{ - \: contains \: a \: nucleus}} \\ { \sf{ - \: contains \: one \: cell \: type}} \\ { \sf{ - \: contains \: membrane-bound \: organelles}}[/tex]
All the above is ✔
3. Which of the following most accurately represents the various feeding relationships within an ecosystem?
O A. A biomass pyramid
O B. A food chain
O C. A feeding diagram
OD. A food web
Answer:
B- A food chain
Explanation:
This answer has been confirmed as correct and helpful
What causes an ionic bond to form between sodium and chlorine?
Answer:
The loss of an electron
Explanation:When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na+), and the chlorine atoms each gain an electron to form anions (Cl−
Answer:
"Sodium has 1 electron in its outermost shell, and chlorine has 7 electrons. ... If sodium can transfer it's "spare" electron to chlorine, both atoms will satisfy their full outer shell requirements, and an ionic bond will be formed."
Explanation:
Which of the following is an
example of facilitated
diffusion?
A. liquid molecules colliding with one
another
B. reaching an equal amount of molecules on
both side of a membrane
C. red blood cells allowing glucose to move in
and out
D. cytoplasm keeping an organelle in place
Not 100% sure but I'm pretty sure it's C. red blood cells allowing glucose to move in and out.
Help!!!! Give a simple overview of the process of photosynthesis.
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil.
Explanation:
This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
A junction between neurons through which electrical signals pass through are known as _________.
A. Neurotransmitters
B. Axons
C. Myelin sheaths
D. Synapses
(answer: D)
Answer: Synapses
Explanation: I think this the answer
if i am correct.
Bacteria species live in the intestinal tracts of many types of mammals. These bacteria consume the partially digested food the mammal eats but also help to complete digestion of the food for mammals. This represents a ________________ relationship between species.
A) Predation
B) Mutualistic
C) Competitive
D) Commensalism
Answer:
B) Mutualistic
Explanation:
A mutualistic relationship is one of the symbiotic relationships that involves two organisms whose actions benefit one another. In mutualism both parties interact with one another and gain from one another.
According to this question, a bacteria species live in the intestinal tracts of many types of mammals. The bacteria helps the mammal to completely digest the food while the mammal provides shelter and food for the bacteria. This represents an example of MUTUALISTIC RELATIONSHIP.
The celiac ganglion ________. Group of answer choices is located near the base of the superior mesenteric artery arises from the greater splanchnic nerve projects postganglionic fibers that innervate the small intestine and the kidney and urinary bladder arises from the lesser splanchnic nerve arises from the lumbar splanchnic nerve
Answer:
The correct answer is ''arises from the greater splanchnic nerve''
Explanation:
The greater splanchnic nerve or great adrenal nerve, originates in the thoracic sympathetic chain from vertebral levels T5 to T9 (T10). It runs over the bodies of the thoracic vertebrae and as it descends it becomes more anterior. It enters the abdomen crossing the diaphragmatic pillar and ends at the celiac plexus. The upper part of each celiac ganglion continues with the greater splanchnic nerve. The collateral or prevertebral ganglia innervate the abdominal and pelvic organs and viscera. The celiac ganglion receives preganglionic fibers from T5 to T12 and innervates the stomach, liver, pancreas, gallbladder, small intestine, spleen, and kidneys.
The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that providing live copepods (2 mm long) and feeder fish (2 cm long) would satisfy the dietary needs of all of the organisms. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)
Answer:
The correct answer is - Biwalves and sponges.
Explanation:
Suspension feeders are the organisms that depend on, for the dietary needs or nutriton, materials suspended in the water. The materials that are suspended are living organisms such as phytoplankton and zooplankton.
Biwalves and sponges are suspended or filter feeders and not predators like other organisms so providing copepods will not complete their food requirement and they will starve to death.
The correct answer is - Biwalves and sponges.
The founder effect occurs when Multiple Choice large groups of individuals leave their home population and establish new settlements, mating only among themselves. small groups of individuals leave their home population and establish new settlements, mating only among themselves. many members of a population die, resulting in a great loss of genetic diversity. many members of a population reproduce causing too much genetic diversity within the population. small groups of individuals leave their home population and join established settlements, and mating with natives.
Answer: small groups of individuals leave their home population and establish new settlements, mating only among themselves.
Explanation:
The founder effect is what happens when a small group of individuals leave their home population in order to establish new settlements. They will then mate only amongst themselves and colonize the area without mixing with the natives.
As a result of the founder effect, there is less genetic variation in the new population than in the home one because the smaller number of individuals who left would not possibly be able to carry all the genes in the home population. The only genes that would be passed on are those of the small individuals.
HELLLLLLLLLLP MEEEEEEEE PLS
THIS QUESTION IS NOT HARD BUT MY BRAIN DOESNT GET IT.
the last answer choice is blocked but it says
0 only sample 4
Answer:
3 and 4
Explanation:
Both appear to be up river which mean they're coming DOWN to contaminate the uptake. If they're ahead of the uptake facility they're not going to show up in the water. I only know this because of City Skylines :)
easy biology question below first correct answer gets brainliest
Answer:
B
Explanation:
B.bb, because there is no dominant present.
What is desertification?
a.
method of using desert land for agriculture
b.
the process of turning arable land into deserts
C.
drying up of stream beds and lakes
d.
the expansion of current deserts land areas
Answer:
B
Explanation:
I believe it's B because desertification is the process of land being turned into deserts due to many factors like animal grazing.
Desertification means the process of turning arable land into deserts, which is the second option. Desertification is a process in which agricultural land is affected the most, resulting in the land having fewer nutrients.
What is desertification?Desertification is a process in which arable land is affected, and as a result, crop production is reduced. Desertification is the result of many factors, such as climate change, rapid urbanization, population growth, global warming, etc. The less water, nutrients, and microbes there are in the soil, the more likely it is that the land will become a desert.
Microbes in the soil become extinct as a result of climate change, causing crop patterns to shift and more land to become desert. Global warming causes temperatures to rise and many species to become extinct, exacerbating the problem.
Hence, desertification means the process of turning arable land into deserts, which is the second option (b).
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Which of the following is true of living things that have prokaryotic cells when compared to living things that have eukaryotic cells?
They have many types of organelles.
They are types of plants.
O They are always larger than eukaryotic organisms.
They are always unicellular.
Answer:
the answer is the last one, they are always unicellular
Explanation:
which of the following describes the function of nucleic acids?
Answer:
A
Explanation:
DNA
Answer:
Option A
Explanation:
The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis
pls mark brainliest
Se podría afirmar que las aletas anteriores de las ballenas se pueden comparar con estructuras similares de organismos terrestres?
Answer:
Las aletas de una ballena y el brazo de un hombre son un ejemplo de órganos homólogos, porque la estructura ósea de las aletas de una ballena es parecida (homóloga) a la estructura ósea de nuestros brazos, debido a que ambas proceden del mismo origen embrionario pero se han modificado para desempeñar funciones ...
anyone please help me
Answer:
b b
B Bb Bb
b bb bb
if the brown mail had been BB then all offspring would have been Bb and all brown however is the male is Bb as above and you perform a test cross 50% of all Offspring should have the bb genotype and a white phenotype a testcross to a heterozygous individual should always yield about a one-to-one ratio of the dominant or recessive phenotype so both of the genotypic and phenotypic ratios here are 50/50
Hello
Would you like to be my friend? Can i please get your intro?
Myself Ojasvi
Class 8, 13
India
For the numbered steps below, select the option that places them in the correct order. 1) The ribosome binds to the mRNA and uses tRNAs to translate mRNA into the corresponding amino acid polypeptide sequence. 2) The spliceosome removes introns. 3) The primary structure of the polypeptide chain undergoes hierarchical foldings to form the tertiary structure. 4) RNA polymerase binds to the promoter region of a gene and initiates transcription.
Answer:
first 4, then 2, then 1, and lastly 3
Explanation:
First, RNA polymerase binds to the promoter region of a gene on the DNA and initiates transcription. Transcription is the process by which we get mRNA (coding RNA) which is used as a template for protein synthesis. Then, in transcription, the resulting mRNA undergoes modification and maturation. This involves removal of introns, addition of 3'-poly-A tail and 5'-cap. Introns are sequences that do not code for protein and are hence removed. The structure that removes introns is the spliceosome. Thirdly, mature mRNA travels to the cytoplasm. Ribosome (composed of rRNA) binds to mRNA and tRNA to start the process of protein synthesis. The process of formation of protein is called translation. Lastly, the primary structure of protein may undergo folding to form a tertiary structure.
Which of the following is NOT true of the
muscular system?
A. They are connected to bones.
B. They allow voluntary movement.
C. They allow us to move.
D. They are connected by gap junctions.
The one that is not true regarding muscular system is that they are connected by gap junction. The correct option is D.
What is gap junction?Gap junctions are specialized intercellular connections that connect a wide variety of animal cell types.
They connect the cytoplasm of two cells directly, allowing molecules, ions, and electrical impulses to pass through a regulated gate between cells.
Location includes that the gap junctions can be found in a variety of locations throughout the body.
This includes epithelia (surface coverings of the body), nerves, cardiac (heart) muscle, and smooth muscle (such as that of the intestines). Their primary function is to coordinate the activity of neighboring cells.
Skeletal muscle cells lack gap junctions because they do not require them. Skeletal muscles are not made up of individual cells.
Thus, the correct option is D.
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