Answer:
Bdelloid rotifers are small metazoans, a class of very small invertebrates that can visible through a microscope only. They reproduce asexually and found in temporary or permanent freshwater.
Bdelloid rotifers population shows only females in this population and Males not found yet, which suggests that females asexually produce identical progeny. The process called parthenogenesis. The organisms that sexually produced their DNA has two copies of the genome that may or may not be identical but in case of asexual reproduction, there are always identical copies produce.
5. What do Chloroplast and Mitochondria have in common?
A. They contain DNA
B. Provide energy to the cell
C. Are in charge in cell transport
D. Make proteins
Answer:
B. Provide energy to the cellExplanation:
Both the chloroplast and the mitochondrion are organelles found in the cells of plants, but only mitochondria are found in animal cells.
The function of chloroplasts and mitochondria is to generate energy for the cells in which they live.
The structure of both organelle types includes an inner and an outer membrane
As with any major scientific discovery, the previous work of many different scientists help contribute to final conclusions. Which of the following scientists' work did not contribute to the discovery of the structure of the DNA molecule? A Gregor Mendel B Linus Pauling C Erwin Chargaff D Rosalind Franklin
A
AExplanation:
AExplanation:Gregor Mendel is generally regarded as the father of genetics due to his three(3) laws of genetics. Non of his work alluded to the existence of the DNA molecules( i.e. the major constituent of genes) let alone its structure.
Computer simulations are __________ ?
1) Dry lab
2) In-silico
3) In-vitro
4) Wet lab
Answer:
2) In-silico
Explanation:
Hope it helps!
The vertical acis on a graph is called the y-axus for scientific data what usually placed along the y-axis
Answer:
dependent variables
Question 12 of 15
A force is a push or pull.
Answer:
True
Explanation:
A force is a push or pull against something or someone
What is the answer to number 1
Answer:
TTT GGC AGT
Explanation:
Advantages and disadvantages of physical barriers in the immune system
Explanation:
advantages:Physical barriers play an important role in preventing microbes from reaching tissues that are susceptible to infection. At the cellular level, barriers consist of cells that are tightly joined to prevent invaders from crossing through to deeper tissue.
Physical barriers play an important role in preventing microbes from reaching tissues that are susceptible to infection. At the cellular level, barriers consist of cells that are tightly joined to prevent invaders from crossing through to deeper tissue.
What is immune system?Immune system is a large network of organs, white blood cells, proteins (antibodies) and chemicals. This system works together to protect you from foreign invaders (bacteria, viruses, parasites, and fungi) that cause infection, illness and disease.
Disadvantages of physical barriers in the immune system is causing immuno deficiency disease.
For more information regarding immune system, visit:
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A fruit fly of genotype B R/b r is testcrossed with b r/b r. In 84 percent of the meioses, there are no chiasmata between the linked genes; in 16 percent of the meioses, there is one chiasma between the genes. What proportion of the progeny will be B r/b r
Answer:
4 percent (4%)
Explanation:
A single crossover occurs between two (non-sister) chromatids belonging to homologous chromosomes. In this case, 16 percent of the meioses have a single crossover, thereby it will produce 8 percent of the chromosomes with the original (parental) combination in the progeny and the remaining 8 percent should be recombinants. From this result, it is reasonable to conclude that half of these recombinants should be 'Br' (and the other remaining 4 percent should be recombinants 'bR'), and therefore the answer is 4 percent (4%).
True or False; Carbohydrates and Proteins are organic and they contain CHO.
which of the following elements is most likely to be the least reactive?
A. a group of 2 element
B. a group of 17 element
C an element with 1 valence electron
D an element with 8 valence electrons
Please help1!1
Answer:
D
Explanation:
8 valence electrons means it is stable, so it will not need to lose or gain electrons
Explain why insertions and deletions are called frameshift mutations, usingthe terms reading frame, codons, and amino acids in your answer.
Answer: A reading frame shift mutation involves the insertion or deletion of a certain number of nucleotides that is not divisible by three, because the cell reads a gene in groups of three bases (a codon). This type of mutation can change the reading frame causing a different translation from the original, because it will code for different amino acids.
Explanation:
DNA is the double-stranded molecule composed of nucleotides which are the functional unit of nucleic acids and are composed of a base (which can be Adenine, Thymine, Guanine, Cytosine, and Uracil replacing Thymine in RNA), a phosphate group and a sugar which can be ribose in RNA and deoxyribose in DNA. The reading frame is one of the possible ways in which a sequence of DNA or RNA nucleotides can be divided to form a group of codons that are consecutive and non-overlapping. A codon consists of a set of three nucleotides and each codon codes for an amino acid during translation or protein synthesis. When DNA is transcribed into messenger RNA (mRNA), this mRNA is read on ribosomes during translation and the three bases of each codon will code for an amino acid.
A single-stranded nucleic acid (RNA) molecule has a phosphate end, called the 5' end (read five prime end) and a hydroxyl end, called the 3' end. These ends define the 5'-3' direction. There are three possible reading frames in which a nucleotide sequence can be read in the 5'-3' direction. Each of these reading frames could start at a different nucleotide of the same codon. In a double-stranded nucleic acid (DNA), there are also three additional reading frames corresponding to the complementary strand, but in an antiparallel direction. Since the two strands of a double-stranded nucleic acid are antiparallel, the 5'-3' direction of the second strand corresponds to the 3'-5' direction of the first strand.
Generally, there is at most, a single biologically relevant reading frame for a given section of a nucleic acid, and that reading begins when a start codon indicating the initiation of protein synthesis is found in the messenger RNA. And the process stops when a stop codon is reached.
An insertion is a type of mutation that involves the addition of genetic material. It can be small and involve a single DNA base pair, or large and involve a fragment of a chromosome. A deletion is a type of genetic mutation in which genetic material is lost, from a single DNA nucleotide pair to an entire chromosome fragment. A reading frame shift mutation involves the insertion or deletion of a certain number of nucleotides that is not divisible by three, because the cell reads a gene in groups of three bases, as it was explained before. This type of mutation can change the reading frame causing a different translation from the original.
21. Which force is used to separate solid pollutant particles from smoke given out from factories?
onlar
Answer: Electrostatic Force
Explanation:
What statement best explains the change over the 10 year period?
What is the original source of energy for most ecosystems?
A grass
B) humans
C)the sun
D)heat
Answer:
C the sun
Explanation:
Step by step explanation
Beatrice’s science teacher gave her an unknown substance to identify based on its properties. After a few tests, Beatrice listed her observations in a chart.
reflects light very well
warms up in my hand
flattens out when hit with a hammer
conducts electricity
Which kind of substance does Melinda have?
A. metalloid
B. nonmetal
C. metal
D. noble gas
One way to think about the importance of biodiversity is simply to think in terms of natural capital: the roles that genes, species, ecosystems, and ecological processes play in supporting human society and a healthy biosphere. What are benefits provided by biodiversity?
Answer and Explanation:
Biodiversity composes of different species living in a certain restricted area. It is the variability of living beings in a natural environment, involving all the species on the planet and their genetic material. This variety includes all plants, animals, fungus, and microorganisms living in a certain place, their genetic variability, and the ecosystems these species form.
Ecosystems include all the biotic, physical, and chemical components of nature, continuously interacting and depending on each other. The ecosystem is composed of living and non-living things that interact and depend on each other. These are the biotic and abiotic factors.
Biodiversity, in equilibrium with abiotic factors, provides ecosystem services, which are important for the maintenance of all forms of life, including human beings.
Ecosystem services
When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:
Provision or supply:These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials, raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.
Regulation:Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.
Cultural:Refers to not the material benefits. Ecosystems provide a recreational place or area to spend time and learn. They provide a spiritual/religious space, are a source of inspiration. Ecosystems are cultural patrimony and the source of scientific knowledge.
BRAINLIEST
CAN SOMEONE PLZ HELP ME!!
Explanation:
I’m pretty sure it’s phenotypes
convention cells hbnmb,
Answer:
convention cells
Explanation:
In the field of fluid dynamics, a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. These density differences result in rising and/or falling currents, which are the key characteristics of a convection cell. When a volume of fluid is heated, it expands and becomes less dense and thus more buoyant than the surrounding fluid. The colder, denser part of the fluid descends to settle below the warmer, less-dense fluid, and this causes the warmer fluid to rise. Such movement is called convection, and the moving body of liquid is referred to as a convection cell. This particular type of convection, where a horizontal layer of fluid is heated from below, is known as Rayleigh–Bénard convection. Convection usually requires a gravitational field, but in microgravity experiments, thermal convection has been observed without gravitational effects.
Coal burning power plants are required to measure the waste gases they produce.
What data is most important for the measurement technology to report?
A. the time of day the gases are released
B. the amount and type of gases produced
C. the temperature and color of the waste gases
D. the movement of gases through the power plant
Answer:
I think b is the correct answer of the question
A very common dahlia plant with red petals is crossed with another very common plant having streaky petals. The probability that an offspring from this cross has red flowers is .75. Let X be the number of plants with red flowers grown from 100 randomly collected seeds from a very large population (N > 10,000) of this cross. A. Does the random variable X have a binomial distribution
Answer:
Yes, it is vivid that the random variable has a binomial distribution
Explanation:
From the given information:
The probability of the plant with red flowers(p success) = 0.75
the sample size n = 100
Thus, the mean μ = np
= 100 ×0.75
= 75
The standard deviation can be calculated by using the formula:
[tex]SD = \sqrt{np(1-p)}[/tex]
[tex]SD = \sqrt{100 \times 0.75(1-0.75)}[/tex]
[tex]SD = \sqrt{100 \times 0.75(0.25)}[/tex]
[tex]SD = \sqrt{18.75}[/tex]
SD = 4.33
PLEASE HELP! I WILL GIVE BRAINLIEST! the factors that limit a populations growth are A.oxidation and corrostion B.climate and weather C.command and control
Hello! Let's tackle this question together.
The answer is option B.
Climate and weather have a significant monopoly over whether or not a species will survive. Say if we put a plant that has to live in hot areas in a cold place. It will die because of the climate and weather in the area. Henceworth, the answer is B.
The North Slope of Alaska has concentrations of air pollutants comparable to the air pollutant concentration of some major cities on the east coast of the United States because
Answer:
pollutants are transported by are from Eurasia
Explanation:
In the following choices, the one that is NOT a function of the skeletal
system is
O protect organs
make red blood cells
transport blood cells
O provide shape and support
Answer:
I'm pretty sure it's transport blood cells
The enzyme dihydrofolate reductase (DHFR) normally resides in the cytosol, and it can be imported into mitochondria by appending a mitochondrial signal sequence. However, when this modified DHFR is incubated with methotrexate, which is a substrate analog that binds tightly to the active site, the modified DHFR is no longer imported. Propose an explanation for this finding.
Required:
a. Consider a transmembrane protein that spans the inner nuclear membrane. Suggest a pathway by which such a protein could reach its destination.
b. Clathrin can assemble with multiple types of adaptors to create coated vesicles. Explain why this multiplicity of adaptors is useful to the cell
Answer:
Within the mitochondria, the import takes place post-translationally. The imported protein must be in an unfolded condition so that it can go through the mitochondria's import machinery. In the existence of methotrexate, the bound DHFR moiety remains in the folded state, and thus, stays on the surface of mitochondria.
It is witnessed that the presequence must be of the length of 55 amino acids to cover both the membranes of mitochondria and must be of about sixty amino acids length to associate with the mhsp70. If the presequence of this methotrexate bound DHFR is of seventy-five amino acids in length, it can associate with mhsp70 within the matrix, to initiate the ATP reliant import within the mitochondria. Due to the presence of various endocytic and intracellular sorting signals, multiple adaptors are essential.
Which of the following is NOT an
ecological effect of mining?
A. habitat disruption
B. loss of biodiversity
C. acid mine drainage
D. increased biodiversity
d is correct
..................
^_^
what kind of graph is this?
Answer:
Explanation:
financial chart
g In transcription, the 3'-hydroxyl group of the growing RNA strand: Group of answer choices NONE OF THESE binds to the 5' ribose. attacks the outermost phosphorous group of the incoming nucleotide. ALL OF THESE attacks the 5' hydrogen of the incoming nucleotide. interacts with a positively charged metal ion in the active site.
Answer:
attacks the outermost phosphorous group of the incoming nucleotide.
Explanation:
Transcription is the biological process where RNA is formed. As you may already know, RNA is an extremely important nucleic acid for genetic processes and the production of proteins. The transcription has three steps that are called start, elongation and end. In the elongation phase, the RNA strand is growing, at this time, RNA polymerase, which is the enzyme responsible for RNA elaboration, places the nucleotides, in the RNA strand, in the 5' - 3' direction. This enzyme causes the hydroxyl, which makes up the nucleotide at the 3' end of the forming RNA, to attack the phosphorus present in the incoming ribonucleotide.
5 factors that influence price
Explanation:
Price Determination: 6 Factors Affecting Price Determination of Product
Product Cost: The most important factor affecting the price of a product is its cost. ...
The Utility and Demand: ...
Extent of Competition in the Market: ...
Government and Legal Regulations: ...
Pricing Objectives: ...
Marketing Methods Used:
6. Which statement describes evolution?
याेग्यबाबुकाे याेग्यपुत्रका रुपमा बहादुर शाहलाई मुल्याङ्कन गर्नुहाेस?
Explanation:
Bahadur Shah was the youngest son of King Prithivi Narayan Shah. He ruled as a regent for next 9 years. During his regency the border of Nepal was extended to Kumau Gadwaal. He was a visionary and courageous ruler. He married the Princess of Palpa with the intention of strengthening the ties between Nepal and also recruited qualified people in his army to make his army strong. In jestha 1843BS, he conquered Gulmi, Argakhaanchi, Dhurkot and included them in Nepal. He also achieved victory over Parvat in the Asoj of the same year. After that Pyuthan, Dang, Rolpa and Jajarkot also came under Nepal's rule.