Answer:
The correct answer would be - Having reliable access to food and being able to produce more calories per unit of land available led to population increase.
Explanation:
An increase in disease, sedentary agriculture, and increase in environmental degradation are three problem that is associated with the farming.
There are more benefits to continue agriculture is the ability of human kind to produce a food and access to plenty of food consistently which will led to increase the population.
Thus, the correct response would be - Having reliable access to food and being able to produce more calories per unit of land available led to population increase.
Please Help!!!! Mass extinctions have occurred repeatedly during the course of Earth's history. One of these events occurred at the end of the Cretaceous Period, during which the dinosaurs became extinct. Mammals flourished after the dinosaurs were gone. This led to a variety of genetically diverse species. Why did the mammals suddenly start diverging into different species after the dinosaurs were gone? a. Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce. b. Once the dinosaurs were gone, the mammals started having larger numbers of offspring in each litter to fill the empty niches. c. The mammals chose to move into the vacant niches the dinosaurs had occupied and change their body shapes to suit these new environments. d. Mammals began mutating rapidly once the dinosaurs died out and were able to create new species based on the mutations.
Answer:
Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce
Explanation:
Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce.
What is the maximum likely to take place if predators are brought to an environment without acknowledged predators?With no predators to manipulate the populace and modify feeding behavior, the prey species quickly degrade and over-run their habitat. As food becomes scarce, the population turns unwell and malnourished, and could both flow or crash.
What takes place whilst a keystone species is removed from an ecosystem?Keystone species have low practical redundancy. which means if the species were to vanish from the environment, no other species might be capable of filling its ecological niche. The atmosphere could be pressured to considerably change, permitting new and possibly invasive species to populate the habitat.
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Which explanation provides support for continental drift theory? O Dinosaurs lived on many continents. Coal fields match up across continents. Tropical plant fossils were found in warm areas. Similar rock types are found across continents.
Answer:
Similar rock types are found across continents
Explanation:
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Similar composition of rocks are present across continents that support the theory of continental drift.
Similar rock types are found across continents is the evidence that support the continental drift theory because at the boundaries of two continent there must be similar type of rock present. Scientist Alfred Wegener presented Continental drift theory in the early 20th century.
Wegener noticed similarities between two continents when he pieced together maps of Africa and South America. He noticed that mountain ranges present on both continents line up to each other which means they are made of similar type of rock so we can conclude that similar types of rock are present across continents.
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How does gene flow affect the fitness of a population?
Answer:
It depends on their genes, like some people cant stop gaining weight and some people can just eat and not gain weight because of their high metabolism. Everyone has different genes that runs through their family that affects their body physically.
Explanation:
A woman consumes 500 grams of carbohydrate, 30 grams of protein, and 75 grams of fat in one day. How many total kcalories has she taken in, and how many and what percentage of kcalories are from carbohydrate, protein, and fat?
A. Total kcalories:
B. Percentage of kcalories from carbohydrate:
C. Percentage of kcalories from protein:
D. Percentage of kcalories from fat:
Answer and Explanation:
The computation is shown below:
A. For Total k. calories
= (Number of grams in carbohydrates × 1 gm of carbohydrates) + (Number of grams in protein × 1 gm of proteins) + (number of grams in fat × 1 gm in fat)
= (500 × 4) + (30 × 4) + (75 × 9)
= 2000 + 120 + 675
= 2795 k. calories
b. As we know that
1 gm of carbohydrates = 4 k. calories
So, for 500 grams it would be
= 500 × 4
= 2000 k. calories
Now the percentage is
= Total grams in carbohydrates ÷ Total kcalories
= 2000 ÷ 2795
= 0.72
= 72%
C. As we know that
1 gm of proteins = 4 k. calories
So, for 40 grams, it would be
30 × 4 = 120 k. calories
Now the percentage is
= Total grams in protein ÷ Total kcalories
= 120 ÷ 2795
= 0.043
= 4.3%
D. As we know that
1 gm of fat = 9 k. calories
So for 75 grams, it would be
75 × 4 = 200 k. calories
So, the percentage is
= Total grams in fat ÷ Total kcalories
= 200 ÷ 2795
= 0.072
= 7.2%
5000 Thailand natives were tested for their MN blood grouping. This allele has incomplete dominance and analysis indicated a phenotypic distribution of 600M, 4000MN, 400N. What is the frequency of the N allele?
Answer:
0.28
Explanation:
This allele has incomplete dominance and analysis indicated a phenotypic distribution of 600M, 4000MN, 400N.
Using p+q = 1
Where q is the frequency of the N allele-
400N/5000 = 0.08 is the genotypic frequency out of 5000 in total - q²
Thus the frequency of the allele N is √q² = √0.08 = 0.28
The frequency of the N allele is 0.48
What is incomplete dominance?Incomplete dominance occur when a progeny of a particular parents gives or have a phenotype that combines both parents gene.
This phenotype is intermediate of the two parents and often unique.
Total population of Thailand= 5000
Allele P= 600M
Allele pq= 4000MN
Allele Q= 400N
According to hardyweingberg principles,
P+Q= 1
p2+2pq+q2=1
Therefore, to calculate frequency of allele N in the population we have;
N for Q= 400/5000=0.08
N for pq= 4000/5000=0.8
since pq contain both allele q and p in equal proportion we have
N for pq= 0.5*0.8 = 0.4
Frequency of N in allele N and MN is
0.08+ 0.4 = 0.48.
Therefore, the frequency of the N allele is 0.48
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Which statement about this family’s pedigree is correct? Marco carried the gene for color blindness, but Lauren did not. Lauren carried the gene for color blindness, but Marco did not. Marco and Lauren both carried genes for color blindness. Frank and Caleb both carried genes for color blindness.
Answer:
They face vary of things such as asexual reproduction
Explanation:
Answer:
its a
Explanation:
trust
While studying a newly discovered prokaryotic organism, you notice that it uses binary fission to multiply. Based on your knowledge of the structures and processes of eukaryotes and prokaryotes, predict how this form of division would differ from mitosis and meiosis.
Answer:
Binary fission is different from mitosis and meiosis because it occur in prokaryotic cells. And prokaryotic cells does not have nucleus like the eukaryotic cells and there is not mitotic spindle formation during binary fission compared to mitosis and meiosis.
Explanation:
Binary fission is a process of cell division where a single cells divide into two or more parts and the parts regenerate into another organisms which resembles the parent organisms. This occur only in prokaryotic cells and is very different from mitosis and meiosis that occur in eukaryotic cells because prokaryotic cells lack nucleus and no spindle formation in the nucleus.
Mitosis occur in eukaryotic cells because they have nucleus and membrane bound organelles and is the process where a parent cell divide to produce two daughter cells that are genetically identical to the parent cell and each cell having the same number of chromosomes of the parent cell.
Meiosis is a type of cell division that occur in eukaryotic cells and it occur in sex cells where a single cell divide into four daughter cells with each having half number of parent cell chromosomes.
During which event does the moon appear closer? a. Apogee b. Penumbra c. Perigee d. Umbra
Answer:
Hello!
Your answer must be C. PERIGEE!
Explanation:
What is a PERIGEE?
A perigee is just another word for "near Earth"...when our Moon is at the closest point ever during orbit from the centre of the Earth...
When this happens, FULL MOONS may be seen as well as significant tidal changes!
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What would happen if the Earth lost all gravity for 5 seconds? What would happen if Earth's gravity became as big as Jupiter for 5 seconds?
Answer:
if it lost or gained all life would end
Explanation:
lost for five seconds
1:all things not firmly attached to the ground would start to float eg cars ships people or mid air floods
2;the atmosphere would drift into space causing lack of enough oxygen
3:the Earth's crust starts to expand outwards causing earthquakes and volcanic eruptions etc
4:the earth would drift away
if was like Jupiter's
1:all the blood in your body would pool at the bottom making the heart work harder to supply blood to other areas
2:the earth crust would start moving inwards therefore collapsing from the inside out
3all the satellites in the orbit would come crashing down etc
hope it helps
Which bone is found in the arm?
A. Sternum
B. Cranium
C. Patella
D. Ulna
Answer:
Your answer is D : Ulna
it is 100% correct .
The bone ulna is found in the arm. Therefore, option (D) is correct.
What are the functions of ulna?The longer of your forearm's two bones is the ulna. It makes it easier to move your hand, arm, and wrist. Numerous vital muscles, tendons, ligaments, and blood vessels are also supported by your ulna.
The ulna frames the skeleton of the average piece of the lower arm and is a long bone, comprising of an extended proximal end, a shaft and a head at the distal end.
The ulna is the average bone of the lower arm and the more extended of the two equal lower arm bones. The ulna, like the radius, is made up of three main parts: a shaft, distal end, and proximal end. The distal humerus and the head of the radius are articulated at the proximal end.
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Four importance of farm record
Explanations.
Farming record is a document that is used
to keep account different activities,event and materials regarding the farming records.
The cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?
Answer
The correct answer is option D, that is, cell produce through the spontaneous generation.
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It is now recognized that life originates from prior life and that cells originate from preexisting cells as a result of experiments and the discovery of the microscope. Thus, option D is correct.
What is original cell theory?All living things are made up of one or more cells, which is one of the three principles of the cell theory. The fundamental unit of structure and organization in organisms is the cell.
While doing studies on tissues in the late 1830s, zoologist Theodor Schwann and botanist Matthias Schleiden proposed the united cell theory.
The unified cell theory states that each living thing is composed of one or even more cells, every cell is the basis of life, and new cells can be created from existing cells.
Therefore, cell produce through the spontaneous generation.
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importance of science in everyday life
Explanation:
Science is very important in every activities of our daily life. some of them are,
It is used for cooking as the cooking materials are made with various science ideas.It is used for buying and selling purposes such as measuring amounts of quantities.It is used for lightning our house and also run various type of electronic devices to make our life effective through electricity. We use science in medical sector as all the requirements in medical sector needs the knowledge and skill of science from medicine to surgery. when we make compost manure, there should be bacteria todecompose it.hope it helps..
Answer:
sicience is in our everyday life. It is important to understand how science is incouprated in our every day life.
Which of the following is NOT a frameshift mutation?
A. Deletion
B. Insertion
C. None of these
D. Inversion
Answer:
Inversion
Explanation:
The frameshift mutations are -Base Substitutions
-Deletions
-Insertions
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The type of mutation that is not a type of frame-shift mutation is inversion.
FRAME-SHIFT MUTATION:
A frame-shift mutation is a kind of mutation that causes the manner in which a nucleic acid sequence is read in the genetic code. Frame-shift mutation can occur via two major means as follows: deletion and insertion. Deletion mutation occurs when a nucleotide base is removed from the sequence while insertion mutation occurs when a nucleotide base is added to the sequence. Deletion and insertion causes the sequence of nucleotides in DNA to be shifted. Therefore, the type of mutation that is not a type of frame-shift mutation is inversion.Learn more at: https://brainly.com/question/15192321?referrer=searchResults
Which enzyme would be needed first to convert most plant biomass to ethanol? A. Protease B. Amylase C. Cellulase D. Lipase
Answer:
b
Explanation:
PLEASE HELP! An original dna strand has the following base sequence: taggtaact What base sequence would be produced through dna replication? A B C D
The correct answer is D. ATCCATTGA
Explanation:
In DNA, there are four nucleobases: guanine (G), thymine (T), adenine (A), and cytosine (C). Additionally, these bases form pairs as guanine aligns with cytosine, and adenine aligns with thymine. This base pairing principle is essential in replication because complementary bases are required to create a new strand or replicate DNA.
According to this, if the sequence is TAGGTAACT, the complementary sequence is ATCCATTGA because, in this way, each base matches with the complementary base.
T (Thymine) is paired with A (Adenine)
A (Adenine) is paired with T (Thymine)
G (Guanine) is paired with C (Cytosine)
G (Guanine) is paired with C (Cytosine)
T (Thymine) is paired with A (Adenine)
A (Adenine) is paired with T (Thymine)
A (Adenine) is paired with T (Thymine)
C (Cytosine) is paired with G (Guanine)
T (Thymine) is paired with A (Adenine)
A critical biotic factor in Yellowstone National Park is
A. high elevation
B. high temperatures in the summer
C.population of wolves
form
D. proximity to water
Answer:
A
Explanation:
Phylogeny is the type of classification that names and identifies different organisms primarily by their: A. Physical similarities B. Similarity to humans C. Physical differences D. Evolutionary relationships
Answer:
D. Evolutionary relationships
Explanation:
phylogeny describes the relationships of organisms which evolved on most closely related species
Phylogeny is the type of classification that names and identifies different organisms primarily by their evolutionary relationship. The correct option is D.
What is phylogeny?Phylogenetics is the analysis of the evolutionary history and interactions between or within organism groups in biology.
Phylogenetic inference methods that concentrate on observed heritable traits, including such DNA sequences, protein amino acid sequences, or morphology, are used to determine these relationships.
Thus, the correct option is D.
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Which is not something that occurs in translation? A codon and an anticodon pair. A peptide bond is created. A molecule of mRNA is formed. An amino acid is added to a polypeptide.
Answer:
A molecule of mRNA is formed.
Explanation:
Translation is the second process that occurs in gene expression. It is the process by which the information encoded in the mRNA transcript is used to synthesize a protein.
The mRNA nucleotide sequence is read in a group of three nucleotides called CODON. Each codon specifies an amino acid. Translation, which occurs in the ribosomes (cytoplasm), reads the codon with an anticodon using the complementary base pairing rule i.e. A-U, G-C. This means that a CODON-ANTICODON pairs.
The anticodon carries a corresponding amino acid to the polypeptide sequence. A peptide bond is formed when two amino acids joins together in a condensation reaction.
Note: A molecule of mRNA is formed during transcription
Answer:
A molecule of mRNA is formed.
Explanation:
Translation is the second process that occurs in gene expression. It is the process by which the information encoded in the mRNA transcript is used to synthesize a protein.
Mutações cromossômicas diferem de mutações genéticas clássicas e me geral trazem graves desvantagens aos seus portadores, cite pelo menos 3 desvantagens com relação aos erros cromossômicos em humanos.
Answer:
Desvantagens:
sofrendo de síndromes como Kinefelter que levam à deficiência de testosterona, gerando uma diminuição na massa muscular, cabelos e aumento dos seios.
Sofrendo de distúrbios de aprendizagem, distúrbios de crescimento, distúrbios cardíacos e distúrbios da puberdade, como a síndrome de Turner.
Hipogonadismo como a síndrome do duplo Y.
Explanation:
As mutações cromossômicas são caracterizadas por serem diferentes das mutações genéticas, pois são a perda ou o ganho dos cromossomos.
Os cromossomos estão, portanto, sofrendo anomalias e sem distinção de que tipo de cromossomo será afetado, é por isso que pode afetar os autossomos, bem como os não-autossomos.
Quando os cromossomos sexuais alterados são aqueles que dão frutos ao turner e às síndromes duplas e entre outros.
Outro exemplo disso é que as pessoas que têm multiplicação do cromossomo 21 sofrem da síndrome de Down, essa síndrome consiste em triplicar o conteúdo cromossômico.
What is the main function of carbohydrates?
O A. Storing genetic information
B. Storing energy
C. Forming a cell's structure
D. Providing a layer of insulation
The main function of carbohydrates is:
B. Storing energy
The main function of carbohydrates is to store energy. Thus, the correct option for this question is B.
What is Carbohydrate?Carbohydrates may be characterized as an important class of macronutrients that contains an organic compound such as sugar or starch. These macronutrients play a specific role in the storage of energy.
The storage of genetic information is facilitated by the DNA which is manufactured with the help of nucleotides. A cell is formed or repaired with the help of proteins which are derived from sequences of amino acids.
Like most organic compounds, carbohydrates are built of small, repeating units that form bonds with each other to make a larger molecule. In the case of carbohydrates, the small repeating units are called monosaccharides.
Therefore, the main function of carbohydrates is to store energy. Thus, the correct option for this question is B.
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Peter and Kim both earn the same amount,£18000p.a.Peter gets a pay rise of 4% in January and then a pay rise of 5% on his new salary in July.Kim gets 9% in July Peter says After July we will both be earning the same again.Is he correct? Explain your answer.
sorry guys its maths
Please give me the answers to these
Answer:
1 d
2 c
3 d
4 b
5 b....
..........
Collections of lymphoid tissues, called MALT, are strategically placed throughout the respiratory, digestive, and genitourinary systems. Which one of these is located at the end of the small intestine?
a) appendix
b) Peyer's patches
c) tonsils
PLEASE ANSWER
What roles do polysaccharides play in living things?
storing fat and building proteins
storing sugar and providing structure
storing fat and providing structure
storing sugar and storing fat
Answer:
Option B
Explanation:
Polysaccharides play the role of storing sugar and providing structures in living organisms.
Polysaccharides are carbohydrates that give 10 to thousands of monosaccharide units on hydrolysis.
For Example, Starch and Cellulose
What is endocrine system? What are its functions? Name the important endocrine glands present in a human body. Draw a labelled diagram to show the positions of these endocrine glands in the human body (male/female)
Answer:
endocrine system produces hormones required to coordinate reactions in the body.
How are the alleles for sex-linked traits inherited? They are passed from the Y chromosome in parents to the X chromosome in offspring. They are passed from the X chromosome in parents to the XY chromosome in offspring. They are passed from parents to offspring on the X and Y chromosomes. They are passed from any chromosome in the parents to the X or Y chromosome in the offspring.
Answer:
they are passed from parent to offspring on the X and Y chromosomes
i just took this test on ed :D
Alleles for sex-linked traits are inherited in such a way that they are passed from parents to offspring on the X and Y chromosomes.
Generally, sex-linked traits are traits or genes that are found on the sex chromosomes only. In humans, females have XX sex chromosomes while males have XY sex chromosomes.
Thus, X-linked traits are passed from parents to offspring via the X chromosomes only. Since both males and females have X chromosomes, it means both genders can have X-linked traits.Y-linked traits are passed from parents to offspring via the Y chromosomes only. Since only males have Y-chromosomes, it means that only the male gender can have Y-linked traits.More on sex-linked traits can be found here: https://brainly.com/question/1381309
Explain Hertzspeung-Russell diagram relationship to stars life cycles
Along the length of a river, there exists a species of green sunfish. In order to provide electricity to area homes, a hydroelectric dam is built that separates the lower river area from a newly formed lake above. After many, many years, the green sunfish in the river and lake are sampled and found to be very different. Which of the scenarios listed below is the best hypothesis to explain the changes observed?
a. directional selection.
b. disruptive selection.
c. stabilizing selection.
d. sexual selection.
Answer:
b. disruptive selection.
Explanation:
Due to technical difficulties, you will find the explanation section in the attached file
Complete each statement with the correct term from the drop-down menu.
Many molecules are moved through the body by
.
provide structure for plants.
determine what people look like.
Cells are surrounded and protected by
.
speed up chemical reactions in the body.
Hemoglobin, a protein, is built by
.
The human body is insulated by
Answer:
1. Proteins
2. Carbohydrates
3. Nucleic acids
4. Lipids.
5. Proteins
6. Nucleic acids
7. Lipids
Correct on edge 2020!!!