Answer:
the variable that is being measured or tested in an experiment
Explanation:
just fax
What happens during S phase?
O A. Chromosomes are duplicated.
O B. DNA separates into two nuclei.
O C. The cell splits in two.
O D. Cytoplasm is manufactured.
Answer: A. Chromosomes are duplicated.
Explanation: This is the correct answer on the quiz.
Chromosomes are duplicated in S phase. Therefore, option (A) is correct.
What do you mean by S phase?
Between G1 phase and G2 phase, DNA replication takes place during S phase of the cell cycle. The processes that take place during S-phase are tightly controlled and highly conserved.
The cell replicates its genetic material entirely during the S phase of DNA synthesis; At the end of S phase, a normal diploid somatic cell with a DNA complement of 2N acquires a DNA complement of 4N.
DNA synthesis or replication occurs during the S phase of the cell cycle, which occurs prior to the interphase. Before entering mitosis or meiosis, the cell's genetic material is replicated in this manner, leaving enough DNA for daughter cells to divide.
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omplete the passage to describe the function of the heart.
The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called
, and the lower chambers of the heart are called
.
Answer:
The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called at atria and the lower chambers of the heart are called ventricles.
Conjugation differs from reproduction because conjugation Group of answer choices transfers DNA horizontally, to nearby cells without those cells undergoing replication. transcribes DNA to RNA. replicates DNA. transfers DNA vertically, to new cells. copies RNA to make DNA.
Answer:
it is differs from reproduction because conjunction group of answers
Conjugation transfers DNA horizontally, to nearby cells without those cells undergoing replication.
Conjugation is a mechanism of genetic transfer in bacteria where genetic material, usually in the form of plasmids, is transferred from one bacterial cell to another. Unlike reproduction, which involves the replication and inheritance of genetic material through cell division, conjugation allows bacteria to transfer genetic material horizontally between cells that are in close proximity to each other.
During conjugation, the donor bacterial cell containing the plasmid makes contact with the recipient cell through a specialized structure called a pilus. The plasmid DNA is then transferred from the donor cell to the recipient cell through this pilus. The transferred DNA can include genes that provide advantages such as antibiotic resistance or the ability to metabolize certain substances.
The key difference between conjugation and reproduction is that conjugation does not involve replication of the recipient cell's entire genome. Instead, it transfers specific genetic material from one cell to another. The recipient cell does not undergo replication as a result of conjugation but acquires new genetic information from the donor cell.
Reproduction, on the other hand, involves the replication and inheritance of the complete set of genetic material in the parent cell. It results in the production of offspring cells that are genetically identical or similar to the parent cell.
In summary, conjugation is a form of genetic transfer in bacteria where DNA is horizontally transferred between cells without those cells undergoing replication. It allows for the exchange of genetic material and the acquisition of new traits by recipient cells. Reproduction, on the other hand, involves the replication and inheritance of genetic material through cell division.
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Một các thể của một loài sinh vật khi giảm phân tạo giao tử. Trong số giao tử được sinh ra người ta nhận thấy số loại giao tử mang 2 NST có nguồn gốc từ mẹ là 6. Quá trình giảm phân diễn ra bình thường, không xảy ra trao đổi chéo.
a. Xác định bộ NST 2n của loài và tên loài.
b. Tính tỷ lệ loại giao tử nói trên?
Cho rằng tỉ lệ thụ tinh của giao tử đực và cái đều là 100%. Toàn bộ các hợp tử đều phát triển thành cá thể con.
Answer:
i cant understand
Explanation:
because your language in vietnam
A pseudogene is a Group of answer choices second copy of a gene that functions when the original copy becomes damaged. gene that is unrelated in sequence to another gene but has the same function. gene that evolved by gene duplication and the acquisition of mutations to yield a gene product that has a slightly different function from that of the original gene product. gene that arose through gene duplication, but by acquiring mutations became nonfunctional.
Answer: Gene that arose through gene duplication, but by acquiring mutations became nonfunctional.
Explanation:
A gene is a functional unit of heredity formed by DNA. They possess a sequence of nitrogenous bases that during translation is read by ribosomes to produce molecules called proteins. A pseudogene is a DNA sequence that resembles a gene, but which has been inactivated in the course of evolution by mutations in its sequence. Thus, it is a gene that derives from other known genes and whose functions are different, may have lost their functionality or have radically changed it. To this day, it is not known exactly how pseudogenes are created, however some theories are as follows:
1. A gene duplication can generate two copies of a gene when only one is needed. A mutation would then occur that deactivates one of the copies. In addition, the duplication event may not be complete, so that the copy has incomplete promoters.
2. They may be fragments of the messenger RNA transcript of a gene may be spontaneously reverse transcribed and inserted into the chromosomal DNA. They lack the promoters of normal genes, so they are not expressed normally.
3. A gene may become non-functional or inactivated if such a mutation becomes fixed in the population. This can occur by normal means such as natural selection or genetic drift.
During a stay in the hospital, an accident victim develops symptoms of bacteremia. A blood sample shows the presence of Gram-positive cocci in pairs. Lab tests determine that the bacteria are non-hemolytic and bile salt tolerant. The bacteremia is likely due to
Answer:
Enterococcus.
Explanation:
Enterococcus is reason for nosocomial infection with predilection for older patients with multiple comorbidities. It is usually caused by longer stay in hospital. The infections may include urinary tract infections, wound infection and intra abdomen or pelvic infections.
What are true of multicellular organisms
Answer:
hope this answer help you
2. Slime moulds cannot be put neither in kingdom Plantae nor in kingdom Animalia. Give reason.
3. Give the disadvantages of the two kingdom classification.
Answer:
3. In the two-kingdom classification following are drawbacks:-
The plants comprised of photosynthetic and non-photosynthetic species. Fungi, that feed on dead organic matter, were placed under photosynthetic plants. There was another class of classification needed were the organisms with the same characteristics were clubbed into one kingdom. This system did not distinguish between the eukaryotes and prokaryotes, unicellular and multicellular organisms and photosynthetic (green algae) and non-photosynthetic (fungi) organisms. There are some organisms which neither fall into plant nor animal kingdom like Lichens.Explanation:-
Hope my answer is helpful.. If yes, plz mark me as brainliest
If a scientific journal article is difficult to understand in its entirety, what is the best resource for comprehending the overall study
and results?
Answer:B an abstract of the study
Explanation:
See the image below!
Answer:
it is cytosine part of deoxyribonucleic acid
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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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
Identify a global challenge
Answer:
electrical waste management and deforestation
A sealed Ecosphere is able to perpetually sustain life until what happens?
Answer:Oxygen is DEPLETED
Explanation:
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
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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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.
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
hormones in the bloodstream
Answer:
insulin
Explanation:
Answer:
chemical messenger.
Explanation:
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
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.
Write one functions of seed.
Seeds serve several functions for the plants that produce them.
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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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.
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.
biological term for control of the body temperature
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
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
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
How many different genotypes are possible from a cross between the parents RRYy and rrYY?
Answer:
1 genotype is possible
RrYy
