Answer:
Evidence of Sea Floor Spreading Harry Hess’s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. This evidence was from the investigations of the molten material, seafloor drilling, radiometric age dating and fossil ages, and the magnetic stripes.
Explanation:
(winks and runs off)
Which statement describes how basic DNA technology is used to construct recombinant DNA molecules? (10 points)
A. Scientists use a gel-filled electrical chamber during gel electrophoresis to isolate DNA fragments.
B. Scientists use restriction enzymes to cut DNA molecules and ligation to paste DNA fragments together.
C. Scientists use heat and bacterial
transformation to add novel DNA into bacterial cells.
D. Scientists use high temperatures to separate strands of DNA molecules during polymerase chain reaction.
The statement 'Scientists use restriction enzymes to cut DNA molecules and ligation to paste DNA fragments together' describes the construction of recombinant DNA molecules. This technology is called recombinant DNA.
Recombinant DNA is a genetic engineering approach by which scientists uses specific enzymes to cut and paste nucleotide (DNA) target sequences of interest.
The enzymes that recognize and cut DNA are called restriction enzymes, while enzymes that ligate DNA fragments are called ligase enzymes.
Recombinant nucleotide sequences are placed into specific vectors (e.g., a plasmid) that transport the DNA in a host cell in where this sequence is expressed as protein.
Learn more in:
https://brainly.com/question/19820456
Where does a plants food come from
1. The food comes in from the soil through the plants roots
2. The food comes from the air through the plants leaves
3. The plant makes its food from the carbon dioxide and water
4. The plant makes its food from minerals and water
Answer:
Actually, you made me confused!
The food comes from plant root in the form mineral's and water and they also use Gas as CO2.
If there is sunlight, they can even convert the light energy into Chemical, in the form of sugar (Glugose)
We call this process as Photosynthesis.
Answer is 3, food dont come from ground, nor just CO2, it requirs minerals and Water too...
The glycoside bond formed is similar to which of the following in proteins?
A) bond in amine group B) peptide bond
C) disulfide bond D) bond in the β . sheet
Answer:
B) peptide bond
Down's syndrome occurs because of a(n)
missing sex chromosome
extra sex chromosome
additional 21st chromosome
additional 18th chromosome
Answer:
C.Additional 21st chromosome
Explanation:
Hope this helped :)
Which statements describe how traits are inherited? Check all that apply.
O An offspring always receives different alleles from each parent.
O An offspring always receives the same alleles from each parent.
O An offspring can receive different alleles or the same alleles from each parent.
O Traits are inherited when proteins are passed from parents to offspring.
O Traits are inherited when genes are passed from parents to offspring.
Answer:
C and e ( The 3rd and the 5th one)
Explanation:
Offspring get everything from parents. One could look like either the parental sex: xx or the parent sex: xy
Or the offspring could look like a mixture of each parental or the parental's parents.
Traits received through bloodline are called genes.
A.flowering plant located in one part of the garden is producing showy purple flowers. A plant in the same species in a different part
of the garden has bright pink flowers. When the pollen from one of these plants is transferred to the ovule of the other plant, seeds
and then offspring are generated. When these seeds are planted in a different place in the garden, the resulting plants are allowed to
flower, and data are gathered. Which statements predict the appropriate outcomes based on the inheritance patterns? Select ALL that
apply
A)
All offspring would be magenta in a codominance inheritance pattern
B)
All offspring would be magenta an incomplete dominance inheritance
pattern
All offspring would be magenta if the pH of the soil is intermediate to the
other two locations.
C)
D)
Half of the offspring would be magenta and half would be pink in a
codominance inheritance pattern
All offspring would be purple if this is dominant to pink according to a
simple Mendelian inheritance pattern
E)
Answer:
its B,C,andE
Explanation:
i just did the usa testprep
The appropriate outcomes based on the inheritance patterns is all the offspring would be magenta on incomplete dominance inheritance pattern, they are magenta is the pH of the soil is intermediate to the other two locations. Thus, the correct options are B, C, and E.
What is Inheritance pattern?
Inheritance pattern describes how the genetic variants are distributed in the families. These help in understanding the patterns which is crucial to predicting disease risk in the family members of an affected individual.
According to the data given, all the offspring would be magenta in an incomplete dominance pattern, offspring would be magenta if the pH of the soil is intermediate to the other two locations, and all the offspring would be purple if this is dominant to pink according to a simple Mendelian inheritance pattern.
Therefore, the correct options are B, C, and E.
Learn more about Inheritance pattern here:
https://brainly.com/question/25632001
#SPJ2
PLEASE HELP WORTH 40 POINTS
Explanation:
Which question, is it b, c or 4
Which side is hypertonic ? A or B ?
Which side will gain water
What is c ?
Answer:
1-b
2-b
3-phospholipid bilayer
B side is hypertonic. It will gain water. C is Phospholipid layer.
What is Hypotonic Solution?
A hypotonic solution is a type of solution that has a lower osmotic pressure than any other solution to which it is compared. It is a solution in which a small amount of solute passes across a semipermeable membrane compared to the amount of solute in the other solution.
If the solute concentration outside the cell is lower than inside the cell, these solutes cannot cross the membrane, so the solution is hypotonic to the cell.
The cell membrane consists of a phospholipid bilayer containing embedded proteins present between these two solutions where a hypotonic solution has a relatively low concentration of solutes.
Thus, B side is hypertonic. It will gain water. C is Phospholipid layer.
Learn more about Hypotonic Solution, here:
https://brainly.com/question/29309024
#SPJ2
can you please help?
Answer:
it's b
hope it will help you
What are the 4 steps of protein synthesis?
Answer:
In every eukaryotic cell, such as plants and animals, there is DNA in the nucleus. The nucleus is an area surrounded by a membrane (nuclear membrane) which has some pores for materials to enter and exit, but these are controlled.
The DNA is the cell's instructions, it is a series of code that can be transcribed and translated to make proteins. As in the image below DNA is a series of bases attached to a sugar phosphate backbone and bonded to another base pair to made a ladder, this ladder is twisted making the shaped called a double helix . There are four base pairs: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C).
The bases have bases they bond to making complementary base pairs , A and T bond together while the C and G bond together. on each strand of DNA one end is labelled 5' (read as 5 prime) and other end is the 3'. The 5' end base pairs of one strand are always attached to the 3' end of the complementary strand. Labelling the ends helps us to describe in which direction DNA is read.
Since the DNA cannot leave the nucleus , copies of the section needed to make the protein are made, this is called transcription.
This done by first opening the double helix with an enzyme called DNA Helicase. Another enzyme called RNA polymerase will match new bases to the original DNA attaching them in a long strand of mRNA. When the enzyme reaches the end the strand will be removed and the DNA can close.
what type of weather is typically associated with the air pressure system near Salem
Answer:
According to common weather maps of the region surrounding Salem, Massachusets, the weather typically associated with the air pressure system is rain.
Explanation:
Given the nature of warm air and its tendency to rise, warmer regions tend to fall under the low-pressure system category. These systems, due to the movement of the warm air, have lower pressure at their center than in the areas surrounding them. As the wind blows towards the low-pressure air systems, the cooler and warmer air meet within the atmosphere, which causes the water vapor to condense and form clouds. Oftentimes, these clouds then precipitate, causing rain.
Drag the correct RNA bases to their matching DNA bases.
Answer:
DNA and RNA bases are also held together by chemical bonds and have specific base pairing rules. In DNA/RNA base pairing, adenine (A) pairs with uracil (U), and cytosine (C) pairs with guanine (G).What's biology?
Biology is a natural sciences that deals with the study of living things.
Answer:
True
Explanation:
You study plants, animals, and cells in biology if I'm not mistaken.
What other food do plantains resemble?
A.
sweet potatoes
B.
bananas
C.
white potatoes
D.
beets
Answer:
B. bananas
Explanation:
Which of the following substances can cause atherosclerosis and should be eliminated from the diet for health reasons?
A. butter
B. olive oil
C. liver, kidney or animal organs
D. avocado, liver and kidney
Answer:
A. butter
Explanation:
Which of the following substances is least likely to diffuse across the phospholipid bilayer of the cell membrane?
A) large hydrophobic molecules B) hydrophobic small molecules
C) carbon dioxide D) small ions
Answer:
Hi, could you answer my question: What is a plan in science for a 6 QWC question?
Explanation:
HELP PLZ
WILL MARK BRAINLIST!!
(EARTH SCIENCE)
1. Which of the following factors made the land a place where the first land plants could thrive? Select the two correct answers.(1 point)
A) abundant sunlight for photosynthesis
B) evolution of animals
C) low levels of oxygen in the atmosphere
D) new, nutrient-rich soil made of cyanobacteria and deteriorating rock
2. Select the 2 correct statements that describe cyanobacteria.(1 point)
A) Cyanobacteria were the first photosynthesizing organisms
B) Cyanobacteria decreased the levels of oxygen in the atmosphere
C) Cyanobacteria have complex cells containing a nucleus
D) Cyanobacteria lived in the ocean
3. Select the correct answer from the list.(1 point)
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to ((remain constant, decrease, increase)) which aided in the formation of ((soil, roots, chloroplasts))
1. Plant can thrive due to abundant sunlight for photosynthesis and new, nutrient-rich soil made of cyanobacteria and deteriorating rock.
2. Cyanobacteria were the first photosynthesizing organisms and Cyanobacteria lived in the ocean.
3. Oxygen increase weathering leads to formation of soil.
Factors made the land a place where the first land plants could thrive are abundant sunlight for photosynthesis and new, nutrient-rich soil made of cyanobacteria as well as deteriorating of rock.
Cyanobacteria were the first photosynthesizing organisms that lived on Earth 3 billion years ago. Cyanobacteria live anywhere on the earth where light and moisture is available i.e. in the open oceans, lakes and streams, in soils, hot and cold deserts, hot springs and salty water.
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to increase which help in the formation of soil. Oxygen directly take part in the chemical weathering of rocks through the process of oxidation. In this process, oxygen reacts with a substance present in the rock and forms oxides which will result in weathering.
Learn more: https://brainly.com/question/25729616
what regulates the growth and development of all the body cells
Which three structures are found in both prokaryotic and eukaryotic cells?
A. cytoplasm, endoplasmic reticulum, DNA
B. ribosomes, DNA, cytoplasm
C. nucleus, cell wall, cell membrane
D. cell membrane, endoplasmic reticulum, ribosomes
The answer is B. Prokaryotes do not have endoplasmic reticulum, cell wall, cell membrane or a nucleus. But they do have DNA (just not in a membrane bound nucleus), ribosomes, and cytoplasm.
what is a protein that recognizes and responds to a signal
The answer to your question is receptors.
aside from the hard-boiled egg, what other things can you compare to the earth's interior layer
Answer:
The Avocado because its seed represents its core and the avocado meat represents the mantle and the skin of the avocado represents the crust
Explanation:
Hope it Helps
Answer:
An Avocado can be another example
Explanation:
a
9. It is difficult to burn a heap of green leaves but dry leaves catch fire easily.
Explain.
Answer:
Green leaves have water wich makes them hard to burn
Explanation:
Dry leaves have no relaining water in them, whick makes them very succeptible to fire, whereas the green leaves are green and therefore still have water in them. This presence of water makes them more resistant to fire.
using example, explain the concept of homeostasis
Answer:
Homeostatis: maintenance of constant internal environment (optimum temperature or optimum optimum osmotic concentration) that permits all the biochemical reactions and physiological functions to proceed with maximum efficiency.
▪For example, when we exercise, there is heat production in the body and the body temperature rises which gets detected by the nerve sensors present in the body and the temperature control system in the brain is activated. It then activates sweat glands that helps in bringing the body temperature back to normal.
una característica que se puede observar o medir sin cambiar la composición de la materia es una propiedad química ¿cierto o falso ?
Answer:
Falso, una propiedad química cambia no solo su apariencia, sino que la cambia por completo. Por ejemplo, la madera sigue siendo madera hasta que la pones al fuego y QUÍMICAMENTE se convierte en col. =)
Explanation:
A scientist uses a microscope to inspect a thin piece of onion and a paramecium. A paramecium is a type of protist. How are the protist and onion sample similar? A. They are both made of a single cell. B. They are both made of structures other than cells. C. They are both made of many cells. D. They are both made of one or more cells.
Answer:
l think that the answer is A.. hope this helps
Please help I am confused between option (b) and (c)
Answer:
option B
Explanation:
the cell is nucelated
What structure within the eye could cause distortions?
Which phrase best defines the orbit of Earth? A. the position in pace of Earth at a certain time B. the distance from the sun to Earth at any point C. the spin of Earth on its axis as it moves forward D. the path Earth travels as it revolves around the sun
The phrase that best defines the orbit of Earth is the path Earth travels as it revolves around the sun. That is option D.
Rotation of the EarthThe earth is one of the nine planets that makes up the solar system.
An orbit is a regular, repeating path that an object takes around another one.
The earth and other planets travels round the sun. That is to say, the orbit of earth is defined as the path the earth passes through or travels as it revolves around the sun.
The earth rotates about its own axis within 24 hours causing day and night while it travels round the sun in every 365.25 days.
Therefore, the orbit of Earth is the path Earth travels as it revolves around the sun.
Learn more about earth here:
https://brainly.com/question/10893109
Choose which assumption must be made in order for this estimate of broad-sense heritability to be correct.
a. The phenotypic variance of the genetically identical plants is the same as the genetically variable population.
b. The genetic variance component is strictly the result of additive genetic variance.
c. The environmental variance of the genetically identical plants is the same as that of the genetically variable population.
d. There is no phenotypic variance associated with the environment.
The assumption 'environmental variance of the genetically identical plants is the same as that of the genetically variable population' is CORRECT. It is used to estimate the variation due to genetic factors.
Heritability (h2) refers to the proportion of the variability of a given phenotypic trait due to genetic factors.
Broad-sense heritability is affected by genetic and environmental factors.
Broad-sense heritability can be estimated as H² = VG/VP, where VG and VP represent genetic variability and phenotypic variability, respectively.
Learn more in:
https://brainly.com/question/8090199
When someone is infected with cholera, the cholera toxin acts as a
A. ligand
B. receptor
C. cellular response
D. nucleus
Answer:
I think it acts as a receptor