Explanation:
The small number behind each element symbol designates the number of atoms of each element in a chemical formula. If there is no number, it is assumed there is only one of those elements. A large number designates how many units there are of that compound.
Answer:
Element's number of atoms in a chemical formula
Explanation:
The small number behind each element symbol indicates each element's number of atoms in a chemical formula. If there is no number, it is assumed there is only one of these elements. A huge numeral in front of a compound designates whereby many units there are of that compound.
Which of the following is NOT a structure that is similar in the embryological development of humans, fish, lizards, and birds
Gills
Tail
Spinal cords
Feathers
Which of the following is NOT a type of single gene genetic disorders?
Common medical problems such as heart disease, type 2 diabetes, and obesity do not have a single genetic cause—they are likely associated with the effects of multiple genes (polygenic) in combination with lifestyle and environmental factors.
A student is presented with a model of a digestive system and is asked to remove one structure (small or large organ) that will have the largest impact on decreasing chemical digestion. Which structure should the student remove
Answer:
Small intestine
Explanation:
Digestion is the process of breaking down food molecules into simpler and usable forms by the body cells. The process of digestion involved the mechanical aspect and chemical aspect. The mechanical one deals with using physical means like chewing to break down the food particles.
However, the chemical one deals with the usage of chemically-secreted enzymes to work on the food molecules. Lots of digestive organs are involved in this chemical digestion, but, the most of chemical digestion takes place in the SMALL INTESTINE. The small intestine is where most of the chemical digestion occurs including absorption.
Hence, according to this question, the student should remove the SMALL INTESTINE because it will have the largest impact on decreasing chemical digestion.
Cognition is studied indirectly. Please select the best answer from the choices provided T F
The statement "Cognition is studied indirectly" is true.
What is cognition?The mental action or process of obtaining psychological features and apprehension through self-satisfaction, experience, and the senses is the definition of cognition.
Cognitive psychologists are interested in the investigation of mental functions. This relates to the study of cognition, memory, learning, and problem-solving processes in people. Cognitive psychologists are interested in how people think or react psychologically to various situations.
On the other side, behavioral psychologists are interested in researching and observing behavior. It is additional research on the interactions between stimulants and outcomes.
Therefore, the statement is true about cognition.
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help me with his please
Answer:
the second choice is correct
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what eats sunbeam snakes?
Sunbeam snakes kill prey by squeezing (constricting) it like a python. Natural Enemies: King cobras and kraits would probably eat these snakes, though I don’t have evidence that they do. Defensive Behavior: Curl tail.
eagle I think maybe .......
A pink snapdragon is crossed to a white snapdragon. What is the probability of getting a red snap dragon
Answer:
0%
Explanation:
Hope this helped! ^^
The Lubber grasshopper is a very large grasshopper, and is black in color with stripes. The color of the stripes exhibit incomplete dominance. Red stripes or yellow stripes may be expressed; however, when alleles are mixed, orange stripes are expressed. What will be the genotypic and phenotypic ratios be for the offspring of two parents that both have orange stripes.
Genotype: ______________________________
Phenotype: _____________________________
Explanation:
Let R be the allele for red stripes.
Let r be the allele for yellow stripes.
Parental phenotypes:
Orange stripes * Orange stripes
Parental genotypes:
Rr * Rr
Gametes:
(R)(r) * (R)(r)
Using a Punnett's Square, we get
F1 generation genotypes:
RR : Rr : rr = 1 : 2 : 1
F1 generation phenotypes:
Red : Orange : Yellow = 1 : 2 : 1.
explain all the fundamentals of sex
Put the following in order, from smallest to largest.
Virus, human skin cell (eukaryotic), yeast, bacteria.
human skin cell, bacteria, virus, yeast
Explanation:
Two genes are hypothesized to be linked. The map distance between the genes is thought to be 12 map units. Out of 1000 offspring produced by two heterozygous parents, predict how many would occur in each phenotypic category.
Answer:
Approximately the number of individuals with each phenotype is:
RS-->0.75 x 1000 = 750rs--> 0.19 x 1000 = 190Rs--> 0.05 x 1000 = 50rS--> 0.05 x 1000 = 50Explanation:
Available data:
Two genes are hypothesized to be linkedThe map distance between the genes is thought to be 12 map units. Two heterozygous parents1000 offspring producedLet us say that the two diallelic genes are R (alleles R and r) and S (alleles S and s)
Heterozygous parents might have the following genotype RS / rs
We know that there are 12mp between genes, which means that the recombination frequency equals 0.12 or 12%.
0.12 of the gametes are recombinants and 0.88 are parentals. There are two types of parentals and two types of recombinant, so 0.06 + 0.06 are recombinants while 0.44 + 0.44 are parentals. This is:
Cross:
Parentals) RS/rs x RS/rs
Gametes) RS (parental) 0.44
rs (parental) 0.44
Rs (Recombinant) 0.06
rS (Recombinant) 0.06
Punnet square) RS rs Rs rS
RS RS/RS RS/rs RS/Rs RS/rS
rs RS/rs rs/rs Rs/rs rS/rs
Rs RS/Rs rs/Rs Rs/Rs rS/Rs
rS RS/rS rs/rS Rs/rS rS/rS
F1) Genotypes:
1 RS/RS --> 0.44x 0.44 = 0.1936 2 RS/rs --> 0.44x 0.44 = 0.1936 x2 = 0.38722 RS/Rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0532 RS/rS --> 0.44 x 0.06 = 0.264 x 2 = 0.0531 rs/rs --> 0.44x 0.44 = 0.1936 2 rs/Rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0532 rS/rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0531 rS/rS --> 0.06 x 0.06 = 0.00361 Rs/Rs --> 0.06 x 0.06 = 0.00362 Rs/rS --> 0.06 x 0.06 = 0.0036 x 2 = 0.0072Phenotypes:
RS-->0.7506 (RS/RS + RS/rs + RS/Rs + RS/rS + Rs/rS)rs--> 0.1936 (rs/rs)Rs--> 0.0566 (rs/Rs + Rs/Rs)rS--> 0.0566 (rS/rS + rS/rs)Now, to know how many individuals would occur in each phenotypic category, you just need to multiply it by 1000, that is the total number of individuals
RS-->0.75 x 1000 = 750rs--> 0.19 x 1000 = 190Rs--> 0.05 x 1000 = 50rS--> 0.05 x 1000 = 50Cancer is the result of an improperly regulated cell cycle. Describe two reasons why cells can form tumors
Answer:
•Continuous cell division
•Too little cell division
Explanation:
Factors that affects cell division includes
•Nutrients
•Genetics
•Chemical and toxics
•Stress
Answer:
-Continuous cell division-Too little cell division-Too little DeathExplanation:
Factors that affects cell division includes
-Nutrients
-Genetics.
-Chemical and toxics,
-Stress.
"Image result for why cells can form tumors
Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor."
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Chose which question you want to solve!!
1. What are the differences and similarities between an asteroids and comets?
or
2.What are the differences and similarities between the moon and a planet?
Answer:
Asteroids or planetoids are small solids in planetary systems. They usually orbit the parent star in their own orbit or as natural satellites (moons) of larger planets.
A comet is a celestial body that is in an elliptical orbit around the Sun. They come from the farthest and coldest areas of the solar system.
Explanation:
The moon is the only natural satellite of the Earth and at the same time the closest celestial body.
It is the brightest celestial body in the night sky, not because it consists of incandescent gases like the sun, but because it reflects sunlight.
A planet is a celestial body that moves directly in an elliptical orbit around a star, not like a natural satellite, which orbits a star while circling around another body.
What determines the genetic code you had when you were born?
Answer:
Explanation:
your biological parent's gene
PLEASE HELP ME
Do you think it’s possible to capture energy from photosynthesis for human use? please explain
Answer:
No
Explanation:
I do not think it is possible because plants do photo synthesis in a organelle called chloroplast which humans do not have.
In an experiment, there are two groups. Which group is not changed in any way?
Answer:
the control
Explanation:
What are the different types of Adaptations? Give examples of each.
Give an example for natural selection occurring based on food sources
Answer:
Behavioural-made by an organism that helps it to survive/reproduce.
Physiological-a body process that helps an organism to survive/reproduce.
Structural -a feature of an organism's body that helps it to survive/reproduce
Explanation:
In silkworms,yellow cocoon (B) is dominat over white cocoon(b). If the mom is BB and the dad is bb, what are the chances they have offspring with yellow cocoons?
Answer:
100 %
Explanation:
Dominance is a genetic phenomenon where a gene variant or allele masks the effects of another allele (of the same gene) in heterozygous individuals. This last gene variant is referred to as the recessive allele. In this case, the silkworm mother can produce only one type of gamete carrying the dominant gene (B) form, while the silkworm father can produce only one type of gamete carrying the recessive gene (b) form. In consequence, from this cross, all offspring (100 %) will be heterozygous (Bb) and therefore they will express the dominant trait (i.e., yellow cocoon).
PLEASE HELP IM TIMED Which of the following statements best summarizes the processes of transcription and translation resulting in the expression of a particular gene?
The genetic information carried by DNA is transcribed into a code that is carried by RNA, which is translated into a specific protein that determines a phenotype.
The genetic information carried by DNA is translated into a code that is copied by RNA and transcribed into a protein chain that results in a specific phenotype.
The genetic information carried by RNA is transcribed into a code that is carried by DNA and translated into a protein chain that results in a specific phenotype.
The genetic information carried by RNA is translated into a code that is copied by DNA and transcribed into a protein chain that results in a specific phenotype.
The genetic information carried by DNA is transcribed into a code that is carried by RNA, which is translated into a specific protein that determines a phenotype. Thus option A is correct.
What are the difference between eukaryotic transcription and translation?The central dogma of life consist of replication, transcription, translation and reverse transcription.
The process in which RNA are formed from DNA is called as Transcription where as the process in which Protein synthesis occur from RNA is called as translation.
Transcription occurs in the nucleus where as Translation occurs in the cytoplasm.
In Initiation phase of transcription RNA dependent polymerase bind to DNA promoters.
The initiation phase of translation involves association of ribosome subunits, tRNA, and initiation factor to mRNA.
Termination step of of transcription includes the release of RNA transcript or mRNA
In translation the ribosome meets stop codons which leads to the dissociation of the ribosome from polypeptide chain. Thus option A is correct.
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What products of the Calvin Cycle are used by the light reactions?
Answer:
ATP and NADPH
Explanation:
The Calvin cycle uses the reducing powers ATP and NADPH from the light dependent reactions to produce sugars for the plant to use.
X-rays carry a small risk of damaging DNA which can lead to cancer. Why are they still used by doctors?
Answer:
Despite the risk of DNA damage and cancer production, X-rays are still used by doctors because the benefit of this diagnostic study outweighs the risk, which in most cases is very low.
Explanation:
Diagnostic radiology studies, such as X-rays and CT scans, are procedures that use ionizing radiation to obtain images of the inside of the body. Prolonged or constant exposure to this type of radiation is harmful because there is a risk of producing damage to DNA and can lead to the development of cancer.
However, the use of X-rays and CT scans are non-invasive diagnostic methods whose information provides an accurate diagnosis of a disease and, when well used, has a very low risk of organ damage.
Ionizing radiation is measured in milisieverts (mSv) and exposure from radiologic studies is in the range of 0.1 to 10 mSv per study. The amount of ionizing radiation a person is expected to receive per year from exposure to their environment is in the order of 3 to 5 mSv per year, so diagnostic imaging studies involve a low risk of organ damage.
Doctors continue to use X-rays as a diagnostic study, despite the risk of cancer and DNA damage, because the benefit —accessible, noninvasive, and cost-effective— far outweighs the risk.
what are the 10 branches of biology?
Answer:
Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology.
What cannot form when two plates collide?
Volcanoes
⊝
Deep Sea Trenches
⊝
Mountain Ranges
⊝
Rift Valleys
Answer: Rift Valleys
Explanation:
A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion.
The picture below shows two galaxies.
Which of these statements best describes a similarity between the two galaxies?
a)Both have elongated centers.
b)Both have shapes determined by gravitational forces.
c)Both change their shape from time to time.
d)Both are held together by electrostatic force.
Answer:
I think its B
Explanation:
Because all I know is that galaxies are defined as the system which contains billions of stars bind together by gas or dust and held together by gravitational forces. There are also three types of galaxies which are elliptical, spiral, and irregular shaped and all galaxies have different shapes of centers.
Answer:
Both change their shape from time to time.
Explanation:
Do Chloroplasts?
A. Chemically change energy from the sun, carbon dioxide, and water into sugar and oxygen. This chemical change is called photosynthesis.
B. Store water, nutrients, or waste products in the process of photosynthesis
C. Surround and protects the cell during photosynthesis
Answer:
A
Explanation:
5 Which answer best describes how
the particles that make up a liquid
move?
A vibrate in place
B tightly packed
C flow past each other
D move freely in all directions
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Polygenic traits are when one phenotype (trait) is controlled by several different genes. The provided example shows human skin color being controlled by 3 different genes. Describe one other trait (don't use skin color!) in any animal that you think could be a Polygenic trait, and explain why you think that it is (HINT: I did mention an example in class yesterday... lets SEE if you remember!).
HELP ASAP ! QUESTION IS IN PICTURE !
Answer:
first and third one
Explanation:
animals need the oxygen they make. and animals eat the plants. if an animal doesnt eat plants it eats somthing that does. sorry for the typos.
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Paragraph 5 looks at the types of fuels organisms need.Which of the Following statements is true?
1)Humans need a lot of fat molecules to avoid hunger
2)humans need proteins, fatty acids, vitamins & minerals
3)Humans need a constant supply of red meat
4)Humans need to take Vitamin B supplements
Please help & thank You
Answer:
2
Explanation:
Humans need proteins, fatty acids, vitamins, and minerals
Identify the factors that have an effect on temperature and precipitation by sorting the words and phrases into the
correct categories.
mountain ranges
Temperature
Precipitation
seasonal winds
prevailing winds
altitude
latitude
ocean currents
Answer: Temperature: Latitude, Ocean Currents, Altitude
Precipitation: Mountain Ranges, Prevailing Winds, Seasonal Winds
Explanation: I just did it