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Answer:
Answers are in the image above
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A mutation is the change in a gene. Mutations happen when a mistake is made when a cell’s chromosomes are copied. How might mutations introduced to variation into a population?
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Which two structures have functions that are the most similar? swimmerets in crustaceans and claws in centipedes claws in crustaceans and antennae in insects stingers in arachnids and claws in centipedes fangs in arachnids and antennae in insects
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Answer:
laws in crustaceans and antennae in insects
Explanation:
What tools do we use to measure length , mass , volume & temperature in the biology lab
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measure mass with a balance, such as a triple beam balance or electronic balance and tools used to measure length include a ruler, a Vernier caliper, and a micrometer screw gauge. Vernier calipers and micrometer screw gauges are more precise and can be used to measure the diameter of objects like pipe and wire.
Sight in whales ,vestigial organ
Answers
Answer:
a human hand and a whale's flipper. similar bone structure.
Explanation:
what causes the formation of ocean currents?
A: rotation of Earths on its axis
B: change in the magnetic field of Earth
C: temperature differences of water in the ocean
D: movement of tectonic plates under Earth's surface
Answers
Answer:
a
Explanation:jhgyutfyrdtsardfghygygtfydrtdrtdtyytftydtrdrdrtdxfhdy8
Answer:
It may be C or D.
Sorry if I'm wrong.
Explanation:
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Which is the result of genetic drift?
1. a decrease in genetic diversity
2. an increase in the size of the gene pool
3. an increase in total allelic frequency
4. a decrease in the size of the population
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Answer:
An increase in total allelic frequency
Which space probe (s) was/were used to map the background microwave radiation throughout the universe?
Answers
Answer:WMAP
Explanation:
Create your own Python file in a code editor of choice and begin writing functions as defined below. Your function names, inputs, and outputs should be exactly as described. Please make sure you follow the coding guidelines from the main rubric! def dna_count(dna): This function takes in a string representing a DNA sequence and returns a list or tuple of four integers representing the number of times each nucleotide A, C, G, or T occur in the DNA string, in that order.
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Answer:
In python:
def dna_count(dna):
A = dna.count('A'); C = dna.count('C')
G = dna.count('G'); T = dna.count('T')
dna_countlist = []
dna_countlist.append(A) dna_countlist.append(C)
dna_countlist.append(G) dna_countlist.append(T)
return dna_countlist
dna = input("DNA: ")
print(dna_count(dna))
Explanation:
This defines the function
def dna_count(dna):
This counts the occurrence of A and C
A = dna.count('A'); C = dna.count('C')
This counts the occurrence of G and T
G = dna.count('G'); T = dna.count('T')
This creates an empty list
dna_countlist = []
This appends the occurrence of A and C to the empty list
dna_countlist.append(A) dna_countlist.append(C)
This appends the occurrence of G and T to the list
dna_countlist.append(G) dna_countlist.append(T)
This returns the list
return dna_countlist
The main begins here
This prompts the user for the DNA string
dna = input("DNA: ")
This calls the dna_count function and also prints the returned list
print(dna_count(dna))
Plants use energy from the sun to produce glucose. This glucose is then used for fuel for growth. Which of the following terms best applies to plants?
O A. Producers
OB. Herbivores
O C. Consumers
D. Omnivores
Answers
Answer:
A
Explanation:
Petrus brings his 87-year old grandmother to the emergency department where you work. His grandmother has a fever, is dehydrated and confused, and complains of pain when urinating. Petrus reports that she has not been eating or drinking, but she has no signs or symptoms of gastrointestinal distress. You request blood samples and also a urine sample. You decide to keep Petrus' grandmother in the hospital so that she can be given intravenous fluids. You also want to wait for the lab test results before you decide whether she required additional treatment or if she can return home.
1. When Petrus' grandmother's test results are sent to you, you discover that while her blood work is normal, her urine has Gram-negative bacilli in it. Based on this, you know that the cells are:______.
a) stained blue and are cylindrical in shape.
b) stained purple and are cylindrical in shape.
c) stained pink and are spherical in shape.
d) stained pink and are cylindrical in shape.
e) stained green and are oval in shape.
2. Petrus asks you what the Gram-negative result means and you explain that the bacteria causing his grandmother's UTI:____.
a) have a thin cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
b) have a thick cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
c) have no cell wall but they have a thick outer membrane which makes the cells less sensitive to the antibiotic penicillin.
d) have a thin cell wall and an inner cell membrane which makes the cells less sensitive to penicillin.
e) have no cell wall which makes the cells more sensitive to the antibiotic penicillin.
Answers
Answer:
d) stained pink and are cylindrical in shape.
b) have a thick cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
Explanation:
Gram-negative bacteria are bacteria that do not retain the crystal violet stain. So they stain in pink and they have an outer cell membrane unlike gram positive bacteria.
PLEASE HELP ASAP !!! Like many multicellular organisms, plants have organs that perform specific functions. Which of the following correctly pairs a plant organ with its function?
O Plant leaves capture nutrients from rain.
Plant roots absorb water needed for photosynthesis.
O Plant stems store carbon dioxide for cellular respiration
O Plant flowers provide the energy needed for eggs to develop.
Answers
Answer:
Its A, the roots of plants absorb the water used in the process of photosynthesis
Explanation:
Really hope this helps <3
The following correctly pairs a plant organ with its function - Plant roots absorb water needed for photosynthesis.
RootsThe root is the part of a vascular plant that is normally underground. The roots absorb water and mineral from the soil. It also helps in anchoring the plant in the ground.
The water is absorbed through roots used for the photosynthesis and cooling of the aerial parts of the plant.
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Difference between fern and bamboo
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PLEASE HELP ASAPP !!! A certain plant tissue, typically found in the stem and in the hard outer covering of seeds, contains very thick, rigid cells. Which of the following correctly identifies this tissue and its function?
O meristem tissue; gamete formation
O vascular tissue, production of sugar
O ground tissue, transportation of materials
dermal tissue, protection against damage
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Answer:
B.) vascular tissue, production of sugar
This small structures break down materials in the cell.
Answers
Answer:
Lysosomes
Explanation:
an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane. In other words, they break down materials in the cell.
The aurora lights
primarily occur in the
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Answer:
Occurrence. Most auroras occur in a band known as the "auroral zone", which is typically 3° to 6° wide in latitude and between 10° and 20° from the geomagnetic poles at all local times (or longitudes), most clearly seen at night against a dark sky.
Explanation:
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A formerly large, random-mating population switches to a high rate of inbreeding. As a consequence: a. Recessive, deleterious traits are more evident in the population. b. Migration rates will decrease. c. Dominant traits will be selected against. d. Genetic drift will be stronger. e. Heterozygotes become more common.
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Answer: The correct option is A.
Explanation:
This is because inbreeding is the mating or organisms that are genetically related in one way or the other and it go against interchanging of DNA. This normally result in recessive traits in a population and bring about the same traits.Therefore there is more possession of two identical traits in the population and there is decrease in genetic variation because of the similar traits in offsprings genome.
The consequence of moving from random-mating population to a high rate of inbreeding is a. Recessive, deleterious traits are more evident in the population.
This is because in inbreeding, individuals are further decreasing genetic variation as a result of increasing h. zygosity in the genomes of their offspring.
Random mating on other hand, the mattings in a population is as a result of proportion to their genotypic frequencies.
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A scientist made the following table showing the number of eggs laid by two different salmon. Based on this data, which fish has the best chance of their offspring surviving, and what type of adaptation is this?
Salmon Number of Eggs Laid
#1 10 million
#2 25 million
Salmon #1, life cycle adaptation
Salmon #1, physical adaptation
Salmon #2, life cycle adaptation
Salmon #2, behavioral adaptation
Answers
Answer:
C
Explanation:
Hope that this mighthave
helped you
Based on this data, Salmon #2, life cycle adaptation fish has the best chance of their offspring surviving.
What adaptations do salmon have?The other highly significant adaptation in salmon is their gills. Atlantic Salmon have four sets of gills with specialized cells that allow them to migrate between salt and fresh water.
The four sets also allow for the efficient dissolving of oxygen.
Thus, Salmon #2, life cycle adaptation is correct.
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Which of the following is the most rare to observe from Earth?
total solar eclipse
total lunar eclipse
partial solar eclipse
partial lunar eclipse
Answers
Answer:
total solar eclipse
Explanation:
A group of scientists were using CRISPR to treat a mouse with cystic fibrosis, a disease caused by a defective Cl- channel protein called CFTR. The most common cause of cystic fibrosis in humans is the absence of a phenylalanine, an amino acid, in the CFTR protein, which prevents CFTR from achieving the correct 3-D structure.If the scientists wished to repair this mutation, how would they alter the mutated CFTR gene before using CRISPR to insert the DNA into the mice
Answers
Answer:
they can insert the codon that encodes phenylalanine by CRISPR-Cas mediated homology-directed repair
Explanation:
The CRISPR (clustered regularly interspaced short palindromic repeats,)-Cas (CRISPR-associated protein) is a versatile technology for genome editing which has been developed by adapting a natural defense mechanism found in prokaryotic organisms. The CRISPR-Cas genome editing tool can be used to edit DNA sequences in eukaryotic genomes (for example, in human genomes) and thus restore gene function (in this case, the CFTR gene function). The system consists of a Cas protein that cleaves the DNA at specific genomic sites and a single guide RNA (sgRNA) that guides the Cas protein at specific genomic locations. CRISPR-Cas mediated homology-directed repair refers to the process where Cas cuts the DNA to triggers the homologous recombination (HR) DNA repair pathway, by which it is possible to insert new genetic sequences at specific genomic sites (in this case, the codon that encodes phenylalanine within the specific CFTR gene).
Which expression is equivalent to 7.659
Answers
Answer:
99
Explanation:
A student observes that a fallen Bryophyllum leaf has tiny plants growing along the leaf margin, as
shown in the figure.
fallen Bryophyllum leaf
new plants
-leaf margin
What form of reproduction is shown?
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Answer:
Asexual (vegetative) reproduction
Explanation:
Asexual reproduction is a type of reproduction that involves only a single parent. As opposed to sexual reproduction, it does not involve the formation of sex cells or gametes.
According to this question, Bryophyllum, which is a plant known to propagate itself via its leaves is practicing a form of asexual reproduction called VEGETATIVE PROPAGATION, which is the propagation of a plant via its vegetative parts e.g. stems, leaves, cuttings etc.
What is the answer to this please?
Answers
Answer:
convection
Explanation:
Answer:
Radiation
Explanation:
Type the correct answer in the box. Spell all words correctly.
Dwayne makes the following observations and conclusion.
• Animals and birds smell through their nostrils
• Fish have nostrils
• Therefore, fish must smell through their nostrils
What type of reasoning is Dwayne using?
Dwayne is using _______
reasoning, which begins with specific observations and arrives at a general conclusion.
Reset
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How Babies Are Born....
Answers
Answer:
Mommy and daddy got turned on and decided to have a little fun.
Explanation:
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What will occur if a species is divided into two groups and allowed to reproduce in different environments for many generations?
1. divergence, potentially giving rise to two different species
2. random mutations, all of which will decrease fitness
3. divergence, but these will never be two different species
4. natural selection, keeping both groups genetically static
Answers
If a species is divided into two groups and allowed to reproduce in different environments for many generations, it will produce divergence, potentially giving rise to two different species (Option 1).
What is divergence?Divergence refers to the emergence of genetic variation in a population, which occurs when individuals are separated.
Divergence may lead to speciation and the emergence of new species when variations are important enough to produce reproductive isolation.
Divergence and speciation due to geographical barriers are common evolutionary processes.
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Answer: If a species is split into two groups and allowed to breed in extraordinary environments for many generations, it will produce divergence, doubtlessly giving upward push to two specific species (option 1).
Explanation: What is divergence?
Divergence refers back to the emergence of a genetic version in a populace, which takes place when individuals are separated.
Divergence might also lead to speciation and the emergence of recent species whilst variations are important enough to provide reproductive isolation.
Divergence and speciation because of geographical barriers are commonplace evolutionary processes.
NOTE: Hope this helps you answer is from Acceleration Education / Buzz.
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Which is most similar to the skin of a human?
Gills of a tadpole
Scales of a fish
Beak of a bird
Teeth of a crocodile
Answers
Which is not a reason why organisms are classified into Domains and Kingdoms?
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Answer:
for a better study of organisms
Explanation:
Organisms are classified into domains and kingdoms based on their cell type, their ability to make food, and the number of cells in their bodies.
Domains and kingdoms are the highest categories of classification. It is usually used to classify organisms to make it simple for their identification. It is not classified only to study the organism better.
What are domain and kingdom?A domain is the highest category of classification and a kingdom is a second-highest category.
Living things are placed in these categories according to their way of obtaining food, the number of cells, types of nuclei, etc.
It is used to avoid confusion between the organism and to show that the organisms are related to each other.
Thus, it can be concluded that it is not used not only study but for other purpose also.
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PLEASE HELP ASAPP !!! A certain plant tissue, typically found in the stem and in the hard outer covering of seeds, contains very thick, rigid cells. Which of the following correctly identifies this tissue and its function?
O meristem tissue; gamete formation
O vascular tissue, production of sugar
O ground tissue, transportation of materials
dermal tissue, protection against damage
Answers
According to the given information, this tissue is ground tissue, transportation of materials
What tissue is found in the stem?The stem is composed of three tissue systems that include the epidermis, vascular, and ground tissues, all of which are made from simple cell types.
The xylem and phloem carry water and nutrients up and down the length of the stem and are arranged in distinct strands called vascular bundles.
Thus, option C ground tissue, transportation of materials is correct.
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1. Define the term biodiversity and explain why biodiversity is necessary for a helpful ecosystem.
2. List 3 things that humans have done to decrease biodiversity
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Explanation:
Biodiversity is a combination of various cultures and religions. It helps our ecosystem because together with other cultures and countries we can come up with different and various methods of helping our ecosystem. Like biodiesel and electric cars instead of our emissions polluting the air we breath.
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Which of the following can be determined from the data in figure 1?
A) Mouse 2 is a transgenic organism while Mouse 1 isn't
B) Mouse 1 produces a functional Mc1r protein while Mouse 2 doesn't
C) Mouse 2 has a longer coat than Mouse 1 does
D) Mouse 1 and Mouse 2 differ in at least one nucleotide of the Mc1r gene