Answer: DNA replication occurs in two steps.. first, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.
Explanation:
Answer:
The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.
Explanation:
what is apple plus a banana it's really hard only big brain get it
Answer:
Panana is the answer buddy
If the number of photosynthetic organisms on Earth decreased drastically, which would happen as a result? Less water would be available on Earth’s surface. Less solar energy would reach Earth’s atmosphere. More oxygen gas would be found in Earth’s atmosphere. More carbon dioxide gas would be found in Earth’s atmosphere.
If photosynthetic organisms are decreasing on Earth there is no consumption of carbon dioxide, hence option 4 is correct.
How much carbon dioxide Earth’s atmosphere?The amount of oxygen in the atmosphere will likewise decrease as the number of photosynthetic species rises.
More carbon dioxide gas would be found in the atmosphere because forests, especially rainforests, create more oxygen. The development of oxygenic photosynthesis was the most significant metabolic advancement in Earth's history.
It liberated life from the finite supply of reductants drawn from geochemistry and allowed it to create energy and reduce power directly from sunshine and water.
Therefore a decrease in photosynthetic organisms increases the carbon dioxide gas in Earth’s atmosphere.
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Which of the following structures would normally be found in a plant cell but not in an animal cell? A. cell wall B. cell membrane C. nucleus D. vacuoles
Answer: A) Cell wall
Explanation:
Please note that because it says normally not in an animal cell, the answer may be vacuole, which are rarely in animal cells. However, because cell walls are never found in animal cells, I went with that.
Hope it helps <3
Answer:
Cell Wall
Explanation:
Animals have only cell membrane due to which they move but Plants have cell wall due to which they don't move
The
fishing of the species led to a decrease in its population. In which two ways will this affect the food web?
The higher levels in the pyramid will receive more energy.
The higher levels in the pyramid will receive less energy.
The lower levels in the pyramid will have less predation.
The higher levels in the pyramid will receive no energy at all.
The lower levels in the pyramid will receive less energy.
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Answer:the lower levels will receive less energy, and the higher levels will receive no energy at all.
Explanation:
Nothing happens to the higher levels besides not getting preyed upon, and the lower levels get less food
a lodge pole pines of NORTH America are affected by the following abiotic factors:
A) fires and fungus
B) pine beetles and fungus
C) warm dry summers and cold wet winters
D) cold wet winters and pine beetles
Answer:
C
Explanation:
Summers and winters are not living, therefore they are abiotic.
___ competiton drives natural selection, as individual members of a species compete with each other for limited natural resources.
What scientific knowledge about macromolecules is a direct result of Gerardus Johnannes Mulder’s 1838 discovery? All proteins contain carbon, hydrogen, oxygen, and nitrogen. All carbohydrates contain carbon, hydrogen, and oxygen. Nucleic acids are polymers with nucleotide monomers. The helical structure of DNA is essential for protein production.
Answer:
All proteins contain carbon, hydrogen, oxygen, and nitrogen.
Explanation:
edge
As per the Gerardus Johnannes Mulder’s 1838 discovery, all proteins contain carbon, hydrogen, oxygen, and nitrogen. The correct option is A.
What is Gerardus Johnannes Mulder’s 1838 discovery?Mulder used the descriptor protein in his 1838 document, "On the composition of some animal substances," after Jons Jacob Berzelius suggested it.
He also proposed in the same journal that animals get the majority of their protein from seedlings, which was known as protein.
Mulder was the very first to posit a stipulates the factors that cause distinctions in chemical and physical behavior when revealed to reagents between albumin, casein, and fibrin and other substances more or less similar to them.
All proteins, according to Gerardus Johnannes Mulder's 1838 discovery, contain carbon, hydrogen, oxygen, and nitrogen.
Thus, the correct option is A.
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The source of ATP and NADPH, which are required to synthesize glucose, is a
A) light independent reaction: glucose breakdown and carbon dioxide
B) light dependent reaction: electron transport and the splitting of water
C) light independent reaction: electron transport in the splitting of water
D) light dependent reaction: RuBP and the splitting of water
Answer:
B) light dependent reaction: electron transport and the splitting of water
Explanation:
The source of ATP and NADPH, which are required to synthesize glucose is a light-dependent reaction.
During the process of photosynthesis, light energy is required to tranport electrons that produces ATP and NADPH and splitting of water, generating O2.
Photosystem I (PSI) absorbs the light energy and electrons supplied from PSII (Photosystem II) are transferred to the protein ferredoxin, which further donates electrons to electron transport chain that produces ATP and to the electron carrier NADP+ to form NADPH.
Hence, the correct option is B.
Which question can be answered by science? A. Should the government be regulating the use of grocery bags? B. Is it O. K to force people to recycle their grocery bags? C. When is the most enjoyable time to go grocery shopping? D. How much energy does it takes to make a paper bag?
Answer:
How much energy does it takes to make a paper bag
Explanation:
Answer:
D
Explanation:
A, B, and C are not correct because an answer to these question could be counted as an opinion. Although you can support your opinion using science, the answer will be an opinion and not science.
D is the answer because you can find out the answer using science and mathematics. The answer to this question would not be considered opinion.
In an electron microscope, the sample is bombarded with a stream of electrons that are expelled from an electron gun. The electrons interact with the sample component, the result of which is transformed into an image. Why do you think electron microscopes allow for greater magnification than compound microscopes?
Answer:
It is because the electron microscope uses a shorter wavelength electron
Explanation:
In an electron microscope the sample is always bombarded with a stream of electrons. These electrons usually have shorter wavelengths.
The electrons interact with the sample component well, the result of which is transformed into an image which is always clearer and allows for greater magnification than the compound microscope as a result of the short wavelength electrons being used.
Answer:
Due to the shortened wavelength electron it causes a greater magnification than compund microscopes.
3. Because plants don’t have interior or exterior skeletons, they rely on their cell walls to give them structural support. Did you see evidence of this cell structure in plants? How was it different from the animal cells (the blood cells, cardiac muscle, and skin)? 4.The paramecium was the only unicellular organism that Stella viewed through her microscope. All the other organisms were multicellular. How was the unicellular specimen different from the multicellular organisms? 6. Why do you think electron microscopes allow for greater magnification than compound microscopes?
Answer:
3. Plant cells are arranged in tight squares due to their cell walls and are filled with water. These characteristics give the plant a structural support.
Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound microscope?
Cell structures could be clearly seen using a 400x compound microscope, you could see how it is stuctured and detailed because of the magnification, you can see the cell at 40x but not as clear as you can with 400x
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You are analyzing an organism
found in a deep ocean survey.
You believe it is a new species,
but to be sure, you must classify
it first. It appears to have
threadlike root structures. It
cannot move, and sprouts from
the bottom of the ocean floor. It
is clearly multicellular. Light or
dark conditions have no effect on
its growth. What group fits it
best?
A. Fungi
B. Eubacteria
C. Protista
D. Plantae
Answer:
The answer is C Protista.
Explanation:
D can’t be since light or dark has no effect on it, B can’t be since it multicelular, and A can’t be since it has the threadlike roots
An organism found in deep oceans. It cannot move, sprouts from the bottom of the ocean floor, and is clearly multicellular. The group is the best fit for protists. The correct option is C.
What are protists?Protists are multicellular organisms. They are a separate kingdom, that is different from plants, animals, and fungus. They are eukaryotic organisms and are present in land and water.
Examples are algae, amoeba, plasmodium, slime molds, etc.
They are heterotrophs, saprophytes, and autotrophs. Some organisms engulf their food by the membrane of the body, like an amoeba, and paramecium.
They have a resemblance to bacteria, plants, and fungi. They were before categorized into a separate kingdom.
Thus, the correct option is C. Protista.
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Which element is less electronegative than barium (Ba)?
The Periodic Table
O A. Lead (Pb)
O B. Radon (Rn)
O C. Beryllium (Be)
D. Cesium (Cs)
Answer:
cesium
Explanation:
cesium has 0.79 electronegativity and barium has 0.89. All other element have electronegativity higher than that of barium
In exocytosis, the membrane package fuses with _____.
the cell membrane
the nucleus
a gap junction
a transport protein
Answer:
the cell membraneExplanation:
In exocytosis, the membrane package fuses with the cell membrane.
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When oxygen first was released in the early seas it combined with iron to form
A)RNA
B)DNA
C)proteins
D) DNA molecules
Categorize Different Foods Categorize the food items below by selecting which macromolecule they are known to contain. apple steak celery olive oil potato avocado egg
Answer:
The correct categorization of the listed food items would be:
Carbohydrate: apple, celery, potato
Protein: Steak, egg,
Fat: Olive oil, avocado.
The four major macromolecules are carbohydrates, proteins, lipids, and nucleic acids.
Foods like apple, celery, and potato are rich in carbohydrates.
Foods like chicken, meat, eggs, et cetera are rich in proteins.
Similarly, foods like olive oil, mustard oil, butter, et cetera are rich in fats or lipids.
Explanation:
Answer: apple- carb; steak- protein; celery- carb; olive oil- lipid; potato- carb; avocado- lipid; egg- protein
Explanation:
Fruit and veggies are mainly made of carbohydrates because that is the storage and structural components they use (think glucose, cellulose, starch, etc.); Steak is a meat, and meat is technically muscle- muscle is built from protein; Olive oil and avocado are lipids because they are considered fats; Egg is protein because it is an animal by-product, and contains many amino acids, which build up proteins.
Light-dependent reactions
Light-independent reactions
Sun's energy absorbed
Sugars produced
Answer:
The question is unclear but I suppose we're to match the stage of photosynthesis with it's description below.
Light-dependent reactions- Sun's energy absorbed
Light-independent reactions- Sugars produced
Explanation:
Photosynthetic process involves two main stages viz: light dependent stage and light-independent stage. In the light dependent stage, light energy from the sun is trapped or absorbed by the Chlorophyll pigment of green leaves. The absorbed energy is used to split water in a process called PHOTOLYSIS OF WATER.
This process (photolysis) releases protons that build up in the thylakoid membrane to produce a proton pump that generates ATP. At the end of the light dependent reactions, ATP and NADPH molecules are produced.
In the light independent stage which occurs in the stroma of the CHLOROPLAST, the ATP and NADPH molecules produced in the light stage are used to power and reduce carbondioxide (CO2) to synthesize sugar (glucose).
How is the endosymbiotic theory used to support the emergence of eukaryota
Answer:
It involves a cooperative relationship between two cells
Explanation:
allow both to survive—and eventually led to the development of all life on Earth.
For four o'clock flowers, flower color is a case of incomplete dominance. The gene for flower color has two alleles: red (R) and white (r). What is the percent probability that one offspring from a parent with red flowers and a second parent with white flowers will have the genotype rr? Use a Punnett Square to figure out the likelihood.
Answer:
0%
Explanation:
The question is about a gene coding for flower colour in four o'clock plants. The alleles exhibit incomplete dominance i.e the allele for red color (R) is incompletely dominant over the allele for white color (r), hence, an heterozygous intermediate phenotype, which has a pink color, is produced when both alleles combine i.e. Rr.
A parent with red flowers will possess a genotype: RR while a parent with white flowers will possess a genotype: rr. When both parents are crossed using a punnet square (see attached image), all possible offsprings will possess a pink heterozygous phenotype with genotype Rr.
Therefore, the percentage probability of producing an offspring with genotype: rr is 0% since it is not possible considering the parent's genotypes.
If Earth was not spinning, there could still be a ____.
A. diurnal cycle
B. seasonal cycle
C. Hadley cell
D. Ferrel cell
If Earth was not spinning, there could still be a seasonal cycle. The correct option is B.
What is seasonal cycle?A hemisphere experiences winter and longer nights as it is tilted away from the Sun. A hemisphere experiences summer and longer days when it is inclined toward the Sun.
The duration and structure of daylight are largely constant at the equator.
The seasons are caused by Earth's tilted axis. Different regions of the Earth are exposed to the Sun's strongest rays at various times of the year.
Therefore, the Northern Hemisphere experiences summer when the North Pole tilts toward the Sun.
Seasonality describes regular cycles and changes in specific commercial sectors that depend on a specific season.
A season can refer to either a commercial season, like the Christmas season, or to a calendar season, such the summer or winter.
Thus, the correct option is B.
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*ANSWER PLS* What is one possible effect in humans of microbiological pollution? a.) heart disease b.) ecosystem destruction c.) cholera d.) eutrophication
Cholera is one possible effect in humans due to microbiological pollution. The correct option is c.
What is cholera?Cholera is a severe diarrheal condition caused by a Vibrio cholerae bacterial infestation of the intestine.
People can become ill if they consume cholera-contaminated food or water. The infection is frequently mild or without symptoms, but it can occasionally be severe and life-threatening.
Cholera is one possible effect in humans due to microbiological pollution.
Thus, the correct option is c.
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what controls traits and inheritance?
Answer:
Genes
Explanation:
Gregor Mendel discovered in his experiments that a factor determined the physical characteristics of an organism. This factor is called a gene. A gene is the molecular unit of heredity in a living organism.
Genes are segments of DNA that holds the information needed to build and maintain an organism and pass genetic traits to offspring. The trait of an organism, which refers to the physical characteristics of an organism, are passed from parents to offsprings via genes. The genes also contain variant forms called ALLELE that determines which trait an organism will possess.
help pleasssssssssssssssssssssssssse
Answer:
6.) Centi - one hundredth (1/100)
7.) Mega - one million ( x 1,000,000)
8.) Milli - one thousandth ( 1/1,000)
9.) Micro - one millionth ( 1/1,000,000)
10.) Kilo - one thousand ( x 1,000)
Hope this helps you
Which characteristics of bacteria help them infect other organisms? Check all of the boxes that apply. Bacteria reproduce quickly. Bacteria have a protective layer called a capsule. Bacteria can evolve quickly because they can pass on genetic information. Bacterial infections cause symptoms that transfer the bacteria to new hosts.
Answer:
Bacteria reproduce quickly.
Bacteria have a protective layer called a capsule.
Bacteria can evolve quickly because they can pass on genetic information. Bacterial infections cause symptoms that transfer the bacteria to new hosts.
Explanation:
Bacteria are an example of pathogenic microorganisms which infects other cells in order for its survival and reproduction.
They are capable of reproducing quickly and they have protective layer called a capsule protects them from harsh conditions. They can evolve quickly because they can pass on genetic information and their infections cause symptoms that transfer the bacteria to new hosts.
Answer:
1, 2, 3, 4
Explanation:
Binary fission occurs in which of the following type of organsim?
Answer:
A. Prokaryotes like bacteria
Explanation:
Binary fission is a type of asexual reproduction (requiring only one organism, as opposed to sexual reproduction, which requires two) occurs when an organism itself splits into two - hence binary (bi- means two).
Binary fission occurs most often in prokaryotes; eukaryotes like plants and animals engage more in sexual reproduction because they are more complex.
The answer is thus A.
I need help on this question will give brainly points must be right.
Answer:
3
Explanation:
The answer is three, I just did it
In polygenic traits when the bell curve distribution of traits moves to one end of the curve because of a preference for best fit of that trait. What's this shift called?
Answer:
Directional selection
Explanation:
This is known as directional selection.
Answer:
Directional Selection
Explanation:
This is known as directional selection.
Which pair of terms best describes a wooden table?
biotic and nonliving
biotic and living
abiotic and nonliving
abiotic and living
Answer:
Biotic and non-living
Explanation:
=> Since it can't move,respire, ingest or reproduce , it is a non-living thing.
=> It is a component derived from the living part of an ecosystem(A wooden tree), so it is a biotic component.
How many rounds of division are there when one cell in the testis becomes four sperm cells?
Answer:As a result of the two meiotic divisions, each primary spermatocyte produces four spermatids. During spermatogenesis there are two cellular divisions, but only one replication of DNA so that each spermatid has 23 chromosomes (haploid), one from each pair in the original primary spermatocyte
Explanation: