Answer:
The correct answer is -
The control group: the group of people with no supplements and kept inside.
The dependent variable: Vitamin D level in all groups.
The independent variable: the source of vitamin D (sun or tablets)
Explanation:
The control group of any experiment is the group of subjects that did not receive any type of treatment or did not manipulate by the independent variable. Here the group of 30 people that kept inside and did not get supplements is the control group.
The independent variable is a variable that directly affects the dependent variable by a change in the independent variable. In this experiment, the sunlight and vitamin D tablets are independent variables that affect the vitamin D level in people.
The dependent variable is a variable that is affected by the independent variable or depends on the independent variable, vitamin level is the dependent variable.
If the sequence of an mRNA moving through the ribosome has the sequence 5'AUGCCAGCGGAUCGC3', what is the sequence of the polypeptide produced from translating this segment
Answer:
MPADR (methionine-proline-alanine-aspartic acid-arginine)
Explanation:
Translation is the mechanism for which a protein is synthesized from the information encoded in the messenger RNA (mRNA). The mRNA is a single-stranded molecule that consists of a chain of nucleotides, where three-letter combinations of nucleotides 'or codons' specify the order of the corresponding amino acids in the polypeptide chain. The ribosome reads the mRNA by one codon at a time and thus translates this information into a polypeptide, where each codon is specific for one amino acid. In this code, the start codon is AUG (which is read as Methionine), while stop codons can be UAG, UAA, and UGA.
I’ll mark as BRANLIEST!!
Plz I need this for my test!!
1) Observation: a teenager observed that he had three new pimples the night after eating a chocolate bar.
Question:
Hypothesis:
2) Observation: A mother observed that the plant that she accidentally spilled salt water on was wilted.
Question:
Hypothesis:
3) Observation: A little boy observed the leaves on trees changed colors when the temperature was lower.
Question:
Hypothesis:
Answer:
See the answer below
Explanation:
In science, research questions are generally derived from the observation of phenomena. Also, hypotheses that represent general statements that have not been tested are formulated in such a way that they can be falsified. Hence, for each of the observations in the illustration, the question and their respective hypothesis would be as follows:
1. Observation: a teenager observed that he had three new pimples the night after eating a chocolate bar.
Question: Do chocolate bars cause pimples in teenagers?
Hypothesis: If teenagers eat chocolate bars, they might get pimples.
2. See the attached image
3. Observation: A little boy observed the leaves on trees changed colors when the temperature was lower.
Question: Do lower temperatures cause tree leaves to change color?
Hypothesis: If the ambient temperatures of trees are lowered, their leaves might change color.
I NEED HELP ASAP
4)I am an animal cell
PROKARYOTE
EUKARYOTE *****
BOTH
7) I contain genetic information
PROLARYOTE
EUKARYOTE ******
BOTH
6)
4) Eukaryote Cells are animal cells
7) Both I'm pretty sure
What is the importance of having bacteria that is helpful that is helpful?
A. All bacteria makes humans and animals sick.
B. The bacteria that causes strep throat helps with immunity.
C. The bacteria in human’s intestines help digest food and cows with digesting plants.
D. Bacteria can create pathogens to make us healthy.
Answer:
the correct answer is D
An _____
is a head and throat specialist.
Answer:
Otolaryngologists
Explanation:
genotype and phenotype of 4 o'clock flowers
Answer:
genotype:All of the the offspring are RW.
phenotype:All of the offspring are pink.
Structure of a Water molecule
Answer:
A water molecule consists of two hydrogen atoms and one oxygen atom. ... This molecular structure leads to hydrogen bonding, which is a stabilized structure in which a hydrogen atom is in a line between the oxygen atom on its own molecule and the oxygen on another molecule.
Explanation:
SOMEONE PLEASE HELP MEEEE you don’t have to explain just tell me if it’s true or false
Answer:
7. True
8. False
9. True
10. True
Explanation:
Identify the incorrect statement about a single motor unit. Identify the incorrect statement about a single motor unit. Some motor units include as many as 2000 muscle fibers. Fine motor skills depend on the development of small motor units. The more neurons involved, the more powerful the contraction. The smaller the number of muscle fibers, the more precise the movement. Muscle fibers of one motor unit intermingle with the fibers of another motor unit.
Answer:
The more neurons involved, the more powerful the contraction
Explanation:
The motor unit can be defined as the functional unit for muscle contraction, which consists of a motor neuron and the associated muscle fibers it innervates. The number of associated muscle fibers varies depending on the muscle’s ability for contraction. Muscles with a higher number of motor units can modulate force output more finely. The number of muscle fibers per motor unit is inversely proportional to the force that it generates, and while higher is precision, lesser is the size of the motor unit. A higher number of neurons is required for controlling motor units with lesser size, thus being greater the brain's control over the extent of shortening.
The incorrect statement about a single motor unit is that some motor units include as many as 2000 muscle fibers. The correct option is A.
One motor neuron and the muscle fibres it innervates make up a motor unit in most cases. Although a motor unit's muscle fibre count might vary, it is normally significantly lower than 2000.
Depending on the muscle and its purpose, the number of muscle fibres in a motor unit might range from a few to several hundred.
Smaller motor units are linked to more precise motions, whereas larger motor units are in charge of more strong contractions. The size of the motor units affects the level of control and precision of movement.
Thus, the correct option is A.
For more details regarding motor neuron, visit:
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Your question seems incomplete, the probable complete question is:
Identify the incorrect statement about a single motor unit.
A. Some motor units include as many as 2000 muscle fibers.
B. Fine motor skills depend on the development of small motor units.
C. The more neurons involved, the more powerful the contraction.
D. The smaller the number of muscle fibers, the more precise the movement.
E. Muscle fibers of one motor unit intermingle with the fibers of another motor unit.
Which of the following is not a prokaryote?
1.archaebacteria
2.fungi
3.eubacteria
4.halophiles
Which two molecules do green plants use to make glucose?
A. Hydrogen and oxygen
B. Carbon dioxide and water
O C. Methane and iron oxide
O D. Nitrogen and water
Answer:
b
Explanation:
Answer:
Carbon dioxide and water
Explanation:
during photosynthesis plants produce glucose from simple inorganic molecules - carbon dioxide and water - using light energy.
What are the difference illnesses that a human body would acquire if the person did not quit smocking? Give at least 4 examples. Organize and categorize which illnes
Answer:
hi
Explahination:
Organize the following words from smallest to largest in size and list them below.
virus, carbon atom, hydrogen atom, water molecule, bacterial cell, plant cell, animal cell, mitochondrion, chloroplast, glucose molecule, nucleotide, a condensed chromosome, nucleus, ribosome, human brain, human, petri dish, sucrose molecule, glycine (an amino acid), tryptophan (an amino acid)
Answer:
Hydrogen atom
Carbon atom
Water molecule
Glucose molecule
Sucrose molecule
ribosome
Virus
Mitochondrion
glycine
Bacterial cell
Plant cell
Animal Cell
human brain
human
Explanation:
Atoms are the smallest particle and they can not be broken down into further pieces. The molecules are made up of two or more atoms. Cell is made up of two or more molecules.
Help me plzzz thanks I’ll mark brainliest
Answer:
b
Explanation:
abiotic factors
Answer:
B
Explanation:
Restriction endonucleases cleave at __________ , which are sequences that read the same, 5 to 3 , on each DNA strand.
Answer:
Restriction endonucleases cleave at DNA (Deoxy ribonucleic acid) which are sequences that read the same, 5 to 3 , on each DNA strand.
Explanation:
RESTRICTION ENDONUCLEASES-: An enzyme that cleaves DNA into fragments at or near unique recognition sites within molecules known as restriction sites is a restriction enzyme, constraint endonuclease, or restrictase. One class of the larger endonuclease group of enzymes is restriction enzymes. Restriction enzymes are typically divided into five groups, which vary in structure and whether their DNA substrate is cut at their location of recognition or whether the locations of recognition and cleavage are different from one another. Both restriction enzymes make two incisions in order to cut DNA, once through each sugar-phosphate backbone (i.e. each strand) of the double helix DNA.
In bacteria and archaea, these enzymes are contained and provide a defence mechanism against invading viruses. Within a prokaryote, in a process called restriction digestion, the restriction enzymes selectively cut up foreign DNA; meanwhile, host DNA is protected by a modification enzyme (a methyltransferase) that modifies the prokaryotic DNA and blocks cleavage. Together, these two procedures form the method of restriction alteration.
Four gases are described below:
Gas A: 3 liters at 42 °C
Gas B: 9 liters at 12 °C
Gas C: 9 liters at 42 °C
Gas D: 9 liters at 12 °C
Which gases have the same average molecular kinetic energy?
Gas A and Gas B
Gas A and Gas C
Gas B and Gas C
Gas B and Gas D
Gases A, B, and D all have the same average molecular kinetic energy, since they are at 12°C.
Explanation:
Which of the following situations best describes the use of a renewable resource?
A
filling a car with gasoline
B
building wooden furniture
С
mining copper
D
burning coal in a power plant
find the value of x and y if (x,5)=(3,y)
Answer:
x = 3
y = 5
Explanation:
You associate the placement of the variables with their values.
Which of the following is NOT a function of
lipids?
insulation
short term energy storage
make up cell membranes
long term energy storage
Answer:
The answer is "long term energy source!"
Explanation:
Lipids are able to create their own energy, but they are not capable of controlling its capacity. Meaning, that they cannot control how much more energy they can withdraw.
HELP PLS ASAP I MIGHT FAIL
Answer:
a and b
Explanation:
because I have took the test before
What is point source pollution?
Give examples of point source pollution.
What is non-point source pollution?
Answer:
The United States Environmental Protection Agency (EPA) defines point source pollution as any contaminant that enters the environment from an easily identified and confined place.The classic image of a factory smokestack belching smoke and fumes into the air or an industrial discharge pipe pouring contaminated liquid into a river are some great examples of point source releases to the environment.Nonpoint source (NPS) pollution is pollution resulting from many diffuse sources, in direct contrast to point source pollution which results from a single source.Hope this helps :)
Use your own observations and real-life experiences about your brain
Answer:
our life experience changes our brain so if u fall off a bike ur brain will train u and send signals to ur body ur brain also knows when its forgetting something but doesn't know what its forgetting
Explanation:
How do changes in population size relate to environmental conditions?
Answer:
Population size certainly relates to environmental conditions, as more people in a city equate to a higher amount of cars—thus increasing emissions. Additionally, there could be more factory runoff–polluting nearby rivers and waterways.
Population and resource utilization per person determine ecosystem vulnerability. Population expansion increases resource demand, waste, and environmental deterioration.
What are the effects of increase in population on the environment?The hazard to the ecosystem is proportional to human population number and resource consumption per person. Population increase accelerates resource use, waste generation, and environmental degrading.
Through overexploitation, intensive farming, and land fragmentation, it lowers the quality and quantity of natural resources. In regions with significant population pressure, arable land is scarce, resulting in a shortened/eliminated fallow time, a decline in soil fertility, and a decline in farm income owing to farm subdivision.
Learn more about population size, here:
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What is the process that occurs when a recipient eukaryote cell accepts DNA gragmets indirectly from the surrounding environment?
Answer:
horizontal gene transfer
Explanation:
Horizontal Gene Transfer (HGT) can be defined as a non-sexual process that enables the exchange of genetic information between genomes. Although HGT mainly occurs between prokaryotic genomes, an increasing number of examples involving eukaryotic host genomes have recently been described. Agrobacterium bacteria are capable of transferring and integrating DNA into the genome of eukaryotic cell hosts by the HGT mechanism. The transference of genetic material via Agrobacterium-mediated transformation is widely used in biotechnology to generate plants with desired genetic sequences. In the last years, it has been shown that various bacterial species including Bartonella henselae Rhizobium etli or even Escherichia coli, are able to genetically transform eukaryotic cells under laboratory growth conditions. The genetic phenomenon of horizontal gene transfer has evolutionary significance since it enables to bypass barriers between kingdoms in order to acquire nucleotide sequences that may eventually have some adaptive advantage. Moreover, the mechanism of horizontal transfer challenges a narrow vision of the eukaryotic genome as a fixed entity.
According to some critics of evolution, natural selection can produce changes in a population, but it cannot cause substantial changes leading to?
Answer:
It cannot cause substantial changes leading to the formation of a new species.
Explanation:
So natural selection would improve a population but creating a different one will not happen.
Please help me it’s due today!!!!
Answer:
This is a chart I use in my class, I hope you find it helpful. Eventually, you may need to memorize these and whether or not they are polar and such.
Explanation:
Match the bone or bony structure with the structure with which it articulates. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ResetHelp 1. : head of radius 2. : glenoid cavity 3. : manubrium 4. : radial notch of ulna 5. : ulnar notch of radius 6. : olecranon fossa of
Answer:
The Sternal end of the Clavicle goes with the Manubrium of the sternumThe Olecranon process of Ulna articulates with the Olecranon fossa of the HumerusThe Capitulum articulates with the Head of RadiusThe Head of Humerus articulates with the Glenoid Fossa of the Scapula or the Glenoid CavityThe Head of Radius articulates with the Radial notch of UlnaHead of Ulna articulates with the Ulna notch of RadiusCheers!
_______ bonds are created by gaining or losing electrons
Answer:Iconic
Explanation:
True or False?
An apple, potato, and onion all taste the same if you eat them with your nose plugged
I was going to try it, but I don't have any onions.
Answer: True! I just saw something about this :)
Explanation: Makes sense and I just saw something about it haha:)
let me know if right/I helped!
i need to finish this test by 11:59 can someone help
Answer:
it's the large central vacoule
Answer:
1.C
Explanation: Animal cells and plant cells both contain:
cell membrane
cytoplasm
nucleus
mitochondria
Plant cells also contain these parts, which are not found in animal cells: cell
wall
vacuole
chloroplasts
Plant cells are the basic unit of life in organisms of the kingdom Plantae. They are eukaryotic cells, which have a true nucleus along with specialized structures called organelles that carry out different functions. Plant cells have special organelles called chloroplasts, which create sugars via photosynthesis. They also have a cell wall that provides structural support.
I hope this helps Plz tell me if its wrong so i can fix it :)
c
