Answer:
d. have red eyes and a wild-type copy of gene X integrated into a random location in the genome.
Explanation:
P elements are genetic mobile elements, i.e., transposons, which are highly mobile in the Drosophila germline. These transposons naturally cause a high rate of mutation in Drosophila germline cells resulted from an interstrain cross of males with autonomous P elements and females without P elements, a phenomenon known as hybrid dysgenesis. Moreover, a transposase in an enzyme required for the mechanism of transposition (in this case, to mediate the transposition of P elements which are reinserted randomly). The P elements have provided a useful mutagenesis system widely used in molecular biology and genetics research. In fly transformation, it is required to use plasmids with a P element (P plasmids) which contains a w+ (red-eye) marker and recognition sequences for the transposase. In this case, the embryos injected with P plasmids will contain all the components to insert the reporter gene (red-eye marker) and the wild-type copy of gene X into a random site of the genome.
What is formed when sulfur dioxide and nitrogen oxides combine with water in the atmosphere?
A. acid rain
B. particulate matter
C. Ozone
D. chlorofluorocarbon
Answer:
d
Explanation:
chlorofluorocarbons
Which of the following are represented by upper and lowercase letters? A. proteins B. chromosomes C. genotypes D. phenotypes
Answer:
Represented by upper and lowercase letters
(C) genotypes
The following are Represented by upper and lowercase letters are
(C) genotypes. Thus, option "C" is correct.
What is Genotype and phenotype?Genotype is the genetic makeup of an individual i.e the genes responsible for a traits or character that is expressed in an individual.
Phenotype is the physical expression of a gene. Each gene in an individual that is expressed or can be seen physically is what makes up the phenotype.
Thus, option "C" is correct.
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PLEASE HELP!!
Humans have 23 pairs of chromosomes (46 total). What is the total number of chromosomes that a
human baby will have? How many chromosomes will come from each parent?
Answer:
Total 46, 23 from each parent
Explanation:
Which statement correctly shows the flow of energy in a food chain?
A.
Producer→ heterotroph → decomposer
B.
Producer ← consumer ← decomposer
C.
Autotroph← decomposer ← consumer
D.
Autotroph→ decomposer→ heterotroph
Answer:
Producer→ heterotroph → decomposer
Explanation:
Which organism on the cladogram do not have four limps?
Answer:
bird
Explanation:
Which class of organic molecules is used for long term energy storage in animals?
a. Carbohydrates c. Amino Acids
b. Triglycerides d. Proteins
Answer: Triglycerides
Explanation:
Fats are the primary long-term energy storage molecules of the body. Fats are very compact and light weight, so they are an efficient way to store excess energy. A fat is made up of a glycerol, which is attached to 1 to 3 fatty acid chains.
Question 20 of 25
How are photosynthesis and cellular respiration related?
A. Cellular respiration is the process animals use to produce glucose,
while photosynthesis is the process plants use to produce
glucose.
B. The products of photosynthesis are the reactants of cellular
respiration
C. Cellular respiration provides the energy for photosynthesis.
O
D. Photosynthesis produces water molecules, while cellular
respiration splits water molecules apart.
Answer:
B. The products of photosynthesis are the reactants of cellular respiration
Explanation:
O LEVEL 1
04
What effect does biodiversity have on a
community?
A. It enables species to survive in a desert
B. It enables the community to withstand
changes
C. It makes destruction by insects impossible
D. It makes primary succession more likely
Answer:
d
Explanation:
Biodiversity is what the trees and the animals live on so they need it to survive.
(Describe the impact of cutting down or burning large areas of forest on the recycling of carbon.
Answer:
it speeds up the process of the green house effect when trees are burned down is a large area it makes less homes for animals
How do both species benefit in this relationship? (Crocodile & Plover)
A. The Crocodile gets a home and the Plover gets protection
B. The Crocodile gets its teeth cleaned and the Plover gets food
C. The Crocodile gets protection and the Plover gets food
D. Crocodile gets food and the Plover gets cleaned
Answer:
B.
Explanation:
Egyptian plovers and crocodiles have a unique symbiotic relationship. Crocodiles can’t use dental floss, they get food stuck in their teeth. All that food rots their teeth and probably causes some pain. When a crocodile feels the need for a good tooth cleaning it will sit with its mouth wide open. The Egyptian plover bird sees the invitation, and if one is nearby it will fly into the mouth of the crocodile, eat the food stuck in its teeth, and fly away unharmed.
The rays of the Sun strike Earth most directly
O at the equator
O at the poles
O over the oceans
Answer:
at the equator
The Sun’s rays strike Earth’s surface most directly at the equator.
How many bonds does oxygen have?
Answer:
2
Explanation:
duhhhhhhhhhhhhhhhhh
‼️‼️ PLEASE HELPP!! :D
Answer:
limiting factor whose effects impact a population regardless of the population's density
50 points welp
Mums are plants that bloom in the fall.
Which statement describes the photoperiodism of mums?
They bloom when the days are longer.
They bloom when the nights are longer.
They bloom when the temperatures are warmer.
They bloom when the temperatures are colder.
Answer:
They bloom when the nights are longer.
Answer:
2. They bloom when the nights are longer
Explanation:
Photoperiodism means the reaction to length of a day or night cycle, since fall is the beginning of shorter days and longer nights, it is only reasonable that the answer is that They bloom when the nights are longer.
A thermostat is used for which of the following?
Match the position to the closest estimation of its current career outlook.
agricultural engineer
landscape architect
agricultural managers
loss of more than 5 percent
:: growth of more than 15 percent
growth of less than 10 percent
Answer:
can you rephrase your question im not understaind it, if you can i can answer it for you
Explanation:
calculate the solute potential of a 1.0 M sucrose solution at 25 C and standard atmospheric conditions
The solute potential will be "-24.4658 liter-atm".
Given values are:
Concentration,
C = 1.0 MTemperature (in Kelvin),
T = 25+273= 298
Ionization constant,
i = 1Universal gas constant,
R = 0.0821 \ liter-atm/mol-KThe solute potential will be:
→ [tex]\psi_s = -iCRT[/tex]
By substituting the given values, we get
→ [tex]= -(1\times 1\times 0.0821\times 298)[/tex]
→ [tex]= - 24.4658 \ liter-atm[/tex]
Thus the above solution is correct.
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how many molecules are in 2fe203
Answer:
2 molecules.
Explanation:
In 2Fe203, there are two molecules because Fe203 is a molecule which is made up of two atoms i.e. iron and oxygen atom. In one molecules of Fe203, there are 5 atoms so in 2 molecules of Fe203, there are 10 atoms. The digit present in front or to the left side shows number of molecules so that's why we can say that there are only two molecules in 2Fe203. The name of this molecule is iron oxide.
Mendel based his conclusions on his understanding of meiosis.
a. FALSE
b. TRUE
A scientist is studying an aquarium ecosystem that contains water, plants, and fish that eat those plants. The aquarium
has glass walls so light can get in, but it is sealed so no material can move into or out of the tank. When the scientist
turned the aquarium's light on, carbon dioxide in the water started decreasing. How is carbon moving and what is
happening to the amount of carbon in the living things inside the aquarium? Explain your thinking as completely as
possible
Answer:
Carbon in form of carbondioxide is used by plants during photosynthesis. Explanation: According to this question, the aquarium contains water, plants and fish. The glass of the aquarium is transparent and allows the passage of light
Mums are plants that bloom in the fall.
Which statement describes the photoperiodism of mums?
They bloom when the days are longer.
They bloom when the nights are longer.
They bloom when the temperatures are warmer.
They bloom when the temperatures are colder.
no links please, only answer if you know it!
Answer:
D
Explanation:
Answer:
D
Explanation:
the temperature goes up
Which of the following is NOT part of the first line in immune defense? *
Mucus
Sweat
Tears
Antibodies
Skin
Answer:
Antibodies
Explanation:
Skin, tears, sweat and mucus, are all first line of defense.
The part that is not the first line of immune defense is antibodies. The correct option is d.
What are antibodies?
The immune system is a bodily system that consists of white blood cells and antibodies that aid in the fight against any external invaders or infections that enter the body.
They are the body's defense mechanism. Antibodies recognize the pathogen and assist your body in combating it. These antibodies are produced by your body's immunological system. Everyone possesses a variety of antibodies. Each of them detects intruders, such as viruses and bacteria, that might cause illness.
An antibody is a protein that the body's immune system produces when it recognizes dangerous chemicals known as antigens. Microorganisms (bacteria, fungi, parasites, and viruses) and chemicals are examples of antigens.
Therefore, the correct option is d, Antibodies.
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1. The energy that cells need for cellular processes
is found in the chemical bonds that make
up
what
molecule?
a. water
C. ATP
b. glucose
d. ADP
The energy that cells need for cellular processes is found in the chemical bonds that make up ATP (adenosine triphosphate).
What is ATP?ATP, or adenosine triphosphate, is a molecule that stores and provides energy for cellular processes. It is often referred to as the "energy currency" of the cell. ATP is composed of three phosphate groups, a sugar molecule (ribose), and a nitrogen-containing base (adenine).
The energy stored in the bonds between the phosphate groups is released when the last phosphate bond is broken, forming ADP (adenosine diphosphate) and a free phosphate group. This process, called hydrolysis, releases energy that is used by the cell to drive metabolic processes such as muscle contraction, nerve impulse transmission, and protein synthesis.
ATP is produced in the mitochondria through cellular respiration and is constantly recycled within the cell to provide energy for ongoing cellular processes.
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Explain to pieces of evidence that suggest humans and frogs are related
Explanation:
Scientists found additional similarities between the frog genes and human genes. For instance, genes in frogs have very similar neighboring genes as humans about 90 percent of the time. In other words, the frog genome contains the same sort of “gene neighborhoods” as the human genome.
Which of these statements is true of asexual reproduction?
HELP PLEASE HURRYYYY!!!!!
It produces offspring genetically identical to each other and requires one parent.
It produces offspring genetically identical to each other and requires two parents.
It produces offspring genetically different from each other and requires one parent.
It produces offspring genetically different from each other and requires two parents.
Explanation:
Option first is the correct one.
Asexual reproduction is a mode of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it is reproduction which almost never involves ploidy or reduction. The offspring will be exact genetic copies of the parent, except in the specific case of automixis.
Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent. A single individual can produce offspring asexually and large numbers of offspring can be produced quickly.
DNA is found in the nucleus of eukaryotic cells and the ribosomes, the location where proteins are made, are found out in the cytoplasm of the cell as show below. Explain why this is a problem and how the cell solves this problem.
Answer:
See the answer below
Explanation:
The DNA of eukaryotic organisms being present in the nucleus while the protein-synthesizing organelle, the ribosome being present in the cytoplasm poses a spatial problem. It means that transcribed DNAs (messenger RNA) in the nucleus would have to somehow be transported to the ribosome in order for the cell to successfully synthesize proteins.
The problem of transporting the messenger RNA is solved by two features of the cell:
The presence of pores in the nuclear envelopThe presence of transport proteins in the nucleusThe mRNA binds to the transport proteins to form mRNA-protein complexes and is transported through the nuclear pores, often with the assistance of ATP.
What are the advantages of manure?
Answer:
The Advantage of manure are:-
Cost effectiveImprove soil fertilityreduce soil erosion and leachingthey are good sources of macronutrientsit can be transported easily .
20. You have a segment of DNA that contains 26% Adenine, what percent of Cytosine will there be?
a. 24%
b. 26%
c. 52%
d. 48%
Answer:
A
Explanation:
as all bases will be 100% so there will be same about of adenine and thymine so 26+26 =52 do 100-52=48 which will be the amount of cytosine and guanine so 48÷2=24 which will be the amount of cytosine.
hope this make sense :)
PLEASE HELP‼️‼️‼️‼️‼️
Answer the four questions based on the diagram below.
1. Which taxonomic category shown in the diagram contains
the greatest number of different organisms?
2.
Do all organisms shown in the diagram that belong to the
order also belong to the Phylum?
3. Do all organisms shown that belong to the class
Mammalia also below to the genus Ursus?
4. Describe how the diversity
at each level changes from
species to kingdom.
Classification of a Ursus arctos.
answer in 4 complete sentences
Answer:
1. Kingdom Animalia
2. Yes
3. No
4. The taxonomic ranks get more specific as you go down the upside-down pyramid. As you go down the levels, the animals left are more similar but there is only one animal in the species category; the polar bear.
(Needs Two More Sentences)
1. Kingdom Animalia contains the greatest number of different organisms.
2. Yes, all organisms shown in the diagram that belong to the order also belong to the Phylum
3. No, all organisms shown that belong to the class Mammalia also below to the genus Ursus.
4. Ursus arctos—the brown or grizzly bear—is a species. It represents a separate genetic and physical group.
Diversity grows from species to kingdom. Animalia includes mammals, birds, reptiles, and more, including Ursus arctos. Multicellularity and heterotrophic feeding are common traits in the kingdom Animalia. From species (Ursus arctos) to kingdom (Animalia), organism diversity rises.
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What other step do they need to add to their experimental design in order to determine the effect of mass on the speed of the toy cart?
Answer:
The answer is determine the total distance the toy cart traveled for each trial. Brainliest pls
Explanation:
