Answer/explanation:
These cells are diverse since they utilize the same set of qualities in an unexpected way. So indeed in spite of the fact that each of our cells has the same 20,000 or so qualities, each cell can select which ones it needs to "turn on" and which ones it needs to keep "turned off".
Mode of Action of the Herbicide DCMU When chloroplasts are treated with 3-(3,4- dichlorophenyl)-1,1-dimethylurea (DCMU, or diuron), a potent herbicide, O2 evolution and photophosphorylation cease. Oxygen evolution, but not photophosphorylation, can be restored by addition of an external electron acceptor, or Hill reagent. How does DCMU act as a weed killer
Answer:
It acts as a weed killer by blocking photosynthesis
Explanation:
Photosynthesis is important to plants because it is their principal form of energy.
When DCMU is introduced to weeds, what it does is to block or slow down the process of photosynthesis. Carbon dioxide fixation is slowed down causing weeds to die off. DCMU strongly slows down photosystem II. When this is done, lipid and protein membranes would get destroyed and the weed cells would begin to dry and shed off
Which of the following is found in an Oort Cloud?
O asteroid
O meteor
O comet
O star
The most important minerals needed by plants are _____
compound A. Protein B. Nitrogen
Answer: Nitrogen
Explanation:
Early genetic manipulation of petunias included an attempt to engineer dark purple petals. To this end, extra copies of the gene that causes purple pigment was engineered to be produced in the petunia. However, to the surprise of many, the plants carrying the extra copies of the purple gene were completely white or only had patches of color. Molecular analysis revealed that the purple gene was reduced 50-fold in the engineered plants compared to wild type. Provide a possible explanation how this occurred. Also, provide a possible experiment that may overcome this setback
Answer:
The altered pigmentation in transgenic petunia plants is caused by the RNA interference (RNAi) mechanism
Explanation:
The RNA interference mechanism is a naturally occurring mechanism by which single-stranded RNA molecules can bind to complementary mRNAs in order to inhibit gene expression, blocking translation and leading to mRNA degradation. The example above described is a classical genetic experiment (Napoli et al. 1990 ) that showed the existence of the RNAi pathway by the overexpression of a chimeric chalcone synthase (CHS) gene in pigmented petunia flowers, which blocked anthocyanin biosynthesis. In this experiment, irregularly bicolored/white flowers in transgenic petunias containing exogenous pigmentation genes were developed. The co‑suppression of gene expression was produced by the high-copy-number transcription of the CHS transgene, showing the existence of an undescribed RNAi silencing mechanism. Somatic reversion of the altered phenotype can be achieved by restoring the normal mRNA levels for these pigmentation genes, e.g., by a progeny testing in order to eliminate transgenic CHS expression.
Plzzz help I’m sooo confusseeddd
Answer:
Explanation:
allows more people to be president
Which observation best explains how the landform in the image was created ! PLEASE HELP !!!!!!!
Answer:
dreams have been formed through the process of erosion
Explanation:
because it looks like little water streams cutting through the rock so it must have been eroded
HELP!!!!
Blood type AB evidence is considered-
A) Individual
B) Class
C) Circumstantial
D) Direct
Answer:
hey u blocked me pliz unblock me yer
Explanation:
Answer:
A
Explanation:
im not 100% sure
What is the importance of living systems?
A phycologist is interested in testing the claim that the proportion of algae from a local rivulet that belonged to the particular phylum cyanobacteria is at least half. A random sample of 50 alga was obtained and each alga was categorized as either being cyanobacteria or not. It was found that 38 were, in fact, cyanobacteria. The test statistic for this hypothesis test is...
Answer:
The test statistic for this hypothesis test is - 3.68.
Explanation:
A test statistic is a random variable that is calculated from sample data and used in a hypothesis test. You can use test statistics to determine whether to reject the null hypothesis. The test statistic compares your data with what is expected under the null hypothesis.
Sample proportion = 38/50
= 0.76
Hence,
Test statistic
[tex]= \frac{0.76-0.50}{\sqrt{0.50*0.50/50}}[/tex]
= 3.68
All stories must have words.
A. True
B. False
Answer: False
Explanation: Because a story can be told with actions or signals.
Answer:
False
Explanation:
Stories can be told with an object or a series of photos not exclusively words. I hope that this helps :)
While they aren't spiders, Grandaddy Long legs, Horseshoe Crabs, and
Scorpions all belong to this group of organisms. *
Insecta
Crustacea
Arachnida
Nemertea
wait i may be dum but it sounds like your stating something rather then asking.. could you maybe reword the question?
Which word describes organisms in the Kingdom of bacteria
A. Multicellular
B. Prokaryote
C. Unicellular
D. Eukaryote
Answer:
d) eukaryote
Explanation:
all fungi are eukaryotic in nature
5000+1000+500+50 what is its answer
Answer:
6550
Explanation:
That is the sum and you can also use a calculator to find the sum
Give some 4 common treatment for cAncer?????
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
Surgery, radiation, chemotherapy and hormone therapy can all be used to relieve symptoms. Other medications may relieve symptoms such as pain and shortness of breath. Palliative treatment can be used at the same time as other treatments intended to cure your cancer.
thankshope it helpsWhich of the following increases the amount of water in the atmosphere
Answer:
Transpiration
Explanation:
This is the process of water evaporating from plants into the atmosphere.
What process puts new gene segments into the genes of a corn plant to produce a new variety of corn that is resistant to disease?
O adapting
O cloning
O genetic engineering
O selective breeding
Answer:
selective breeding............
Genetic engineering allows the modification in the DNA of an organism. To obtain a disease free plant, genetic engineering is carried out. Thus, option c is the correct answer.
What is genetic engineering?Genetic engineering is a tool used in biotechnology to bring modifications or alterations in the genetic material - DNA of an organism. It modifies the DNA through addition of a gene segment or deletion of a gene.
In genetic engineering process, a specific gene of interest or the desired genetic sequence is selected. It then inserted into a cloning vector to allow its replication in the host gene. The so called 'recombinant' then formed is inserted into the host through various insertion techniques.
Genetic engineering thus allows the selection of a disease free plant, pest resistance or temperature resistant plant. A new variety of the plant can be obtained through genetic engineering.
The genome of an organism can thus be edited where the unhealthy genes can be eliminated through genetic engineering.
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9. Oldfield mice (Peromyscus polionotus, also called beach mice) in the southeastern United States belong to a different genus than rock pocket mice (Chaetodipus intermedius). Oldfield mice from the mainland live in areas with dark soils. These mice mostly have dark fur. Populations of the same species that live on the white beaches of Florida and Alabama have light fur. Describe the evidence you would need to collect to support the claim that the differences in color in these populations are due to natural selection.
Answer:
It is a true example of natural selection.
Explanation:
The dark colour mice lives in the dark soil of southeastern United States in large number as compared to other colour mice because this colour helps them to hide themselves from their predators in that dark soil while on the other hand, on light beaches of Florida light colour mice lives because this light colour also helps these mice in hiding from their enemy animals which is a true example of natural selection because dark colour mice can't survive in light colour beaches dude easily seen by their enemies and reduces its population by eating them.
Signals from nearby cells on how to differentiate are examples of an:
internal cue
external cue
Answer:
External Cue..........
Answer:
I just want points
Explanation:
What genetic trait allows organisms to survive natural selection in their
environments?
Answer:
Adaptations
Explanation:
Devise a way to remember each stage of mitosis. Propose one word or a short phrase that describes each stage and also starts with the same letter as the name of that stage, for example, Telophase-Two nuclei
Devise a way to remember each stage of mitosis and the correct way to learn is PMAT and the full form of the PMAT is P- prophase - chromosomes appear - P, M- metaphase - chromosomes in Middle - M, A- anaphase - chromatids moved Away - A, and T- telophase - Two new cells -T.
What is mitosis?Mitosis has been defined as the process by which the cell divided it has been chromosome and then to separate them and the identical nuclei that has been produced for the preparation of the division of the cell. During the process of the mitosis as a single cell divided into the identical daughter cell.
There are four stage of the mitosis and these are mentioned below:
1- Prophase
The first stage of the mitosis in which the size of the chromosome has became the short and thicken in the shape.
2- Metaphase
This is known as the second stage of the mitosis in which the chromosome lies in the mid of the cell.
3- Anaphase
During this stage of the mitosis has been chromatides will break and they have to move to the opposite poles.
4- Telophase
Telophase has been known as the last stage of the mitosis in which two nuclei formed.
Therefore, Devise as way to remember each stage of mitosis and the correct way to learn is PMAT and the full form of the PMAT is P- prophase - chromosomes appear - P, M- metaphase - chromosomes in Middle - M, A- anaphase - chromatids moved Away - A, and T- telophase - Two new cells -T.
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What are the differences in DNA and RNA in terms of structures and nitrogenous bases?
Answer: DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.
Explanation:
Answer: DNA is a long polymer with deoxyriboses and a phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine, and thymine. RNA is a polymer with a ribose and phosphate backbone.
Explanation:
what are some of the structures inside a cell that help it to live and perform its role in an organism?
Answer:
hat are some of the structures inside a cell that help it to live and perform its role in an organism? mitochondria - makes ATP, lysome - digest bad things, nucleus - contains DNA ribosomes - synthesize proteins 2. ... Plant cells have a large central vacuoles, animal cells do not.
Explanation:
Which of the following represents the structure of messenger RNA?
Answer:
First option
Explanation:
AUGC are the bases of RNA.
According to cell theory which activity is impossible?
a) Skin cells forming from sunlight.
b) Ribosomes being present in eukaryotes
c) Liver cells forming from liver cells
d) Prokaryotes existing by themselves
a) Skin cells forming from sunlight.
According to cell theory, cells forming by themselves is impossible. They can only be formed when another cell divides.
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The English moth, Biston betularia, is often cited as an example of observed evolution. There are two colors of this moth, light and
dark (typica and carbonaria). Kettlewell found that dark moths constituted less than 2% of the population prior to 1848. Then, the
frequency of the dark coloration began to increase. By 1898, the 95% of the moths in Manchester and other highly industrialized
areas were of the dark color. Using the moth example, analyze the events in order to identify support for the statement: natural
selection changes populations, not individuals. Choose ALL that apply.
A)
Variation in the population existed.
B)
Color variation is a result of different gene combinations.
C)
In response to environmental change, moth coloration changed from light
to dark.
D)
Due to natural selection, the ratio of different genetic combinations is
changing
E)
Predator pressure resulted in the light colored genotype being removed
from the gene pool.
Answer:
A,B,C,F
Explanation:
A, B, C and D all of these statements support the idea that natural selection changes populations, not individuals.
What is natural selection?Natural selection is a process by which organisms that are better adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to their offspring. This leads to changes in the genetic makeup of a population over time, as advantageous traits become more common and less advantageous traits become less common.
Natural selection is driven by environmental pressures, such as predators, competition for resources, or changes in climate. It is a key mechanism of evolution, and helps to explain the diversity of life on Earth and the ways in which different species have adapted to their environments.
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What temperature system is used by most of the world
Answer:
The temp system used by most of the world is Celcius
Answer:
The metric system, including Celsius, is the official system of measurement for almost all countries in the world. Most scientific fields measure temperature using the Celsius scale. Zero degrees Celsius is the freezing point of water, and 100 degrees Celsius is the boiling point of water.
Explanation:
PLEASE HELP ASAP!!!!!
Disruptive selection favors which phenotypic traits?
1. sexual
2. directional
3. extreme
4. intermediate
Answer:
3. extreme
Explanation:
fill in the blanks below with the proper label or vocabulary word that matches each stage
which of the following is an example of potential energy?
Answer:
B.) The energy a spring has by being compressed
Explanation:
yessir
ccording to Sir Isaac Newton, gravity depends on two factors. What are they?
Answer:
Mass and distance.
Explanation:
Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.
Additionally, the gravity of earth makes it possible for all physical objects to possess weight.
Newton's law of universal gravitation states that the force of attraction (gravity) acting between the Earth and all physical objects is directly proportional to the Earth's mass, directly proportional to the physical object's mass and inversely proportional to the square of the distance separating the Earth's center and that physical object.
According to Sir Isaac Newton, gravity depends on two factors and these are mass and distance.