Answer:
C
Explanation:
As mammal cells have more precise restriction enzymes, it sometimes needed instead of bacteria. The correct option is C.
What is genetic engineering?Genetic engineering also referred to as genetic modification is a process that uses laboratory-based technologies to alter an organism's DNA makeup.
Because mammalian cells have more precise restriction enzymes, it is sometimes necessary to use them instead of bacteria.
Herbert Boyer and Stanley Cohen, biochemists, create genetic engineering in 1973 by implanting DNA from one bacteria into yet another.
There are three basic stepping stones to genetic engineering. These are:
Isolating DNA fragments from a donor organism.Inserting an isolated donor DNA fragment into a vector genome.Growing a recombinant vector in an appropriate host.Thus, the correct option is C.
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biological term for control of the body temperature
Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don't they explode? They don'Ât drink any water because they get so much from osmosis. They have adapted to live with high osmotic pressure. They urinate a lot, so the water does not build up. Their cells have adapted to absorb salt. All of the above
Answer:
They urinate a lot, so the water does not build up.
Explanation:
Freshwater fishes are fishes that live in freshwater habitat i.e. little or no salt. This means that the fishes are hypertonic (have more salt) to their external environment. Due to their hypertonicity, freshwater fishes tend to take in more water via osmosis.
Freshwater fishes, however, do not explode despite this phenomenon because they pass out the excess water via urine waste. Freshwater fishes urinate a lot, hence, the absorbed water does not build up in their bodies.
q.no. 5 answer me please please please please please please please please please please please
Answer:
(a)The strength of natural fibers is very less as compared to synthetic fibers. Natural fibers are heavy in weight. Natural fibers can be damaged by moths and other insects. These fibers are not wrinkle-free. These fibers are not long lasting and hence not durable.
(b) Cellulose is termed as polymer because it is made up of many monomer units.
(c) Rayon is first man- made fibre it is known as artificial silk because it have properties that are similar to silk.
(d) Rayon possesses many properties of natural fibers since it is a semi-synthetic fiber. Nylon is a synthetic fiber and has properties that are completely different from natural fibers. The key difference between rayon and nylon is their resistance to wrinkles and tears.
(e) Nylon has since become a popular choice, as it has excellent wind resistance, good elasticity, mildew resistance, and is comparatively cheaper. The material is also lightweight and dries quickly.
(f) When the piece of cotton is burnt then it burns completely and produces no odour or smell. When nylon is burnt, It completely burns and produces burning paper like odour. When nylon is burnt then the nylon is completely shrink and starts to melt first and then produces odour during the time of burning
1. Assertion: Mother may be a carrier for haemophilia.
Reason: The father is always a carrier for haemophilia.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) Assertion is true, but the Reason is false.
(d) Assertion is false, but the Reason is true.
Answer:
c
Explanation:
The assertion is true,but the reason is false because the mother is the carrier.
I hope this helps
Which of the following cell membranes is the most fluid?
Membrane A, because it is composed of saturated fatty acids that have one or more cis bonds that form stable aggregations
Membrane A, because it is composed of saturated fatty acids that lack weak hydrogen bonds that continually break and reform to permit macromolecule movement
Membrane B, because is it composed of unsaturated fatty acids that form weak covalent bonds at the site of their cis bonds, which permit easy movement
Membrane B, because it is composed of unsaturated fatty acids that have one or more bends, which prevent tight packing
Answer:
Membrane B, because it is composed of unsaturated fatty acids that have one or more bends, which prevent tight packing.
ANSWER AND I’LL GIVE BRAINLIEST
Which of the following statements can you infer would happen If one organ system stopped working?
a. The other organ systems would have to work harder to make up for the broken system
b. The other organ systems would stop working too.
c. The other organ systems would still work on their own but might have to work harder to complete their function correctly.
Answer:
b
Explanation:
After one system shuts down, the others would slowly start to shut down as well until the body can no longer maintain homeostasis and the person would slowly die. 3. All systems would be working together but the main ones would be muscular, nervous, and skeletal.
Help!!!
I'll give brainliest the brainliest.
Answer:
resists the turgor pressure of the cell: A : cell wall
controls the activities of the cell : C : nucleus
site of the chemical reactions of the cell including synthesis of proteins: D : cytoplasm
Answer:
1. A - Cell Wall
2. C - Nucleus
3. B. Mitochondria
Give brainliest
briefly describe what the outer layer of bone tissue is like
Answer:
dinkachika
jingalalalalallalal
Answer:
Plz refer image for your answer
Explanation:
Hope it helps.. if yes plz mark me as brainliest
define ostia in science
Answer:
Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.
Answer:
An opening, a passage.
Explanation:
science - Anatomy
what type of energy transfer happens when something freezes
What can differentiate between multiple layers of the ocean floor?
sonar
magnetic imaging
x-ray
seismic reflection
Explanation:
seismic reflection is the answer
Besides plants, what other factor distinguishes one biome from another biome?
(A) the number of plant species in the biome
(B) the variety of animal species
(C) average temperatures and precipitation
(D) geographic location
explain how bacteria cam develop resistance to an antibiotic?
Explanation:
Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.
hope this helps you
have a nice day
Write one functions of seed.
Seeds serve several functions for the plants that produce them.
Human Population Growth and Overpopulation
Can someone please help me I don't understand what I have to do.
Answer:
all you're trying to do is create a histogram of what has happened in the past and what could happen in the future.
Explanation:
for example and AD you feel the first little bar because it's not more than a billion and its last therefore it would be the zero billion
and then for 1850 you feel to bars because they had 1 billion people so therefore you feel the 0 billion and the 1 billion part
Adaptation:
Question 4
Which phrase indicates that organisms in a population with the best-adapted set of traits become more common over time?
Select one:
Mutations are not harmful.
Bigger is better.
All organisms have a common ancestor.
Survival of the fittest.
Answer:
Mutation is yes a harmful
Explanation:
Two lizards with different coloring exist within the same ecosystem. One lives in the trees, and the other prefers hiding among rocks. They are separate species because
they behave differently
Othey have different characteristics
Othey cannot successfully reproduce
Othey exist within the same ecosystem
Natural selection is that the process through which populations of living organisms adapt and change.
What are the adaptations behavior in organisms?
Many animals are well adapted to biotic and abiotic conditions due to behavioral, physiological, or structural adaptations that increase their chances of survival and reproduction.
Behavioral - responses made by an organism that help it to survive/reproduce..
Physiological - a bodily process that helps an organism to survive/reproduce.Structural - a feature of an organism’s body that helps it to survive/reproduce.Thus, we can conclude that the correct option is (b).
They are separate species because they cannot successfully reproduce.
which means they have different adaptation methods.
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How many different genotypes are possible from a cross between the parents RRYy and rrYY?
Answer:
1 genotype is possible
RrYy
please help me out, name all 3 parts of the atom.
In the atom, the arrow 1 depicts the proton. The arrow 2 depicts the neutrons, and the arrow 3 depicts the electrons. All three of these are subatomic particles.
What is an atom?An atom is the fundamental structural unit of matter. It consists of protons, neutrons, and electrons. Electrons are negatively charged particles that are present outermost shell of the atom, while protons are positively charged particles that make up the core of the atom. The neutron doesn't have any charge.
Both neutrons and protons make up the core of an atom, while electrons revolve around them. A neutral atom has equal numbers of protons and electrons. Example: the sodium atom.
Hence, the atom showing arrow 1 is a proton, arrow 2 is a neutron, and arrow 3 is an electron.
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As compared to the circulatory system of most fishes, the circulatory system of adult amphibians has the advantage of a single circuit. partially-separate circuits for gas exchange and systemic delivery of blood. complete separation between oxygenated and deoxygenated blood. a four-chambered heart. a pocket of the gut that serves as an air bladder.
Answer:
Partially separate circuits for gas exchange and systemic delivery of blood.
Explanation:
Adult amphibians have separate circuits for gas exchange and systemic delivery of blood. Fishes usually breathe through gills and very few have nostrils. The fishes can breathe underwater with the help of their gills.
Which of the following is NOT of the major biogeochemical cycles?
A.Life cycle
B.Water cycle
C.Carbon cycle
D.Phosphorus cycle
water cycle............
The following is NOT of the major biogeochemical cycles D.Phosphorus cycle is D.Phosphorus cycle.
What is the difference between Carbon cycle and Phosphorus cycle?The major distinction among carbon and phosphorus cycle is that carbon cycle interacts with the environment while phosphorus cycle does now no longer engage with the environment. Therefore, the carbon cycle is a sort of gaseous biking while the phosphorus biking is a sort of sedimentary rocks.
As in comparison to nitrates & different macro elements, decomposers take longer time to decompose any lifeless biota into phosphates. Decomposers are organisms mainly a soil bacterium, fungus, or invertebrate, that decompose natural material. These are the motives for phosphorus cycle being the slowest biogeochemical cycle.
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laws of thermodynamics
Answer:
The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The First Law of Thermodynamics states that energy can be converted from one form to another with the interaction of heat, work and internal energy, but it cannot be created nor destroyed, under any circumstances. The 3rd law of thermodynamics will essentially allow us to quantify the absolute amplitude of entropies.
HELP ME PLEASE FASST
Which of the following describes a scenario that could increase the winds of the jet stream?
O Faster global convection currents
O Decreasing radiation from the sun
O Equal heating of the Earth's surface
O Stopping conduction from the ground
Answer:
faster global convection currents!
Fortunately I just took this quiz and received 100%!
The statement that explains scenerio that can bring an increase to winds of the jet stream is A: Faster global convection currents.
Jet streams can be regarded as a fast flowing as well as narrow and meandering, air currents which is found on Earth and other planet. It is a bands of strong wind which moves to east from west in the globe.The wind of jet stream do increase by the action of wind current, because convection current do aid the movement of this this wind from a place to the otherTherefore, option A is correct.
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Identify a global challenge
Answer:
electrical waste management and deforestation
What is the control for “which bait works best for a homemade fly trap?”
Answer:
A glass of water or an empty cup
Explanation:
If no flies are attracted, that means your experiment is not flawed.
Many animals have a mutually-beneficial, symbiotic relationship with bacteria that reside in their guts. To study the effects of these relationships in more detail, research organisms such as fish and mice have been raised under germ-free conditions. What important process do you predict is compromised in germ-free mice
Answer:
Explanation:
Quá trình tiêu hoá và hấp thụ chất dinh dưỡng
hormones in the bloodstream
Answer:
insulin
Explanation:
Answer:
chemical messenger.
Explanation:
Why is it difficult to bond three phosphate groups to Adenosine?
They have the same charge and repel each other.
They form a strong attraction to each other.
They are like opposite poles of a magnet.
The energy is evenly dispersed across all three bonds.
A sealed Ecosphere is able to perpetually sustain life until what happens?
Answer:Oxygen is DEPLETED
Explanation:
In the scientific process, what is the correct sequence for the following steps: A: Recognizing a problem/Asking a question; B) Testing a hypothesis; C Drawing inferences
Group of answer choices
ABC
ACB
CAB
BCA
Answer:
ABC
Explanation:
Ask questions, make a hypothesis, test the hypothesis, analyze results, draw conclusions, communicate results.
