Answer:
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Explanation:
When both lactose and glucose are available to E. coli, the part of the lac operon regulation that assures that glucose will be metabolized first is
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Lactose is a type of sugar that is found naturally in milk produced by mammals and Glucose is a monosaccharide made mostly by plants during photosynthesis
Mitosis is the division of the _____ and begins with a stage called ____ . As the nuclear envelope finishes dissolving, the cells enter ____, where microtubules from the spindle attach to the duplicated X-shaped chromosomes.
When all chromosomes are fully attached to the spindle, they align at the midplate between poles. This marks the middle of mitosis, which is ____ . As sister chromatids separate, cells enter ____ and they finish separating and a nucleus reforms around each set of new chromosomes in ____ . During this phase, cytokinesis also becomes visible as the cells themselves begin to divide.
Answer:
cell; prophase. prometaphasemetaphase. anaphase, telophase.Explanation:
Mitosis is the division of the cell and begins with a stage called prophase. As the nuclear envelope finishes dissolving, the cells enter prometaphase, where microtubules from the spindle attach to the duplicated X-shaped chromosomes.
When all chromosomes are fully attached to the spindle, they align at the midplate between poles. This marks the middle of mitosis, which is metaphase. As sister chromatids separate, cells enter anaphase and they finish separating, and a nucleus reforms around each set of new chromosomes in telophase. During this phase, cytokinesis also becomes visible as the cells themselves begin to divide.
Organisms that live in similar environments, such as the ocean, often have similar adaptations. This is often due to
A. convergent evolution
B. coevolution Proton
C. gradualism
D. sexual selection
Answer:
A.
Explanation:
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time.
Organisms that live in similar environments, such as the ocean, often have similar adaptations, and this is often due to convergent evolution, which is in Option A, as convergent evolution is a process by which organisms that live in similar environments adapt.
What are coevolution and convergent evolution?Convergent evolution occurs because the same selective pressures are acting on the organisms, leading to the development of similar adaptations, such as streamlined bodies and fins, in many species of fish that live in the ocean and this is due to convergent evolution.
Hence, organisms that live in similar environments, such as the ocean, often have similar adaptations, and this is often due to convergent evolution, which is in Option A, as convergent evolution is a process by which organisms that live in similar environments adapt.
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How might a wildfire influence mass wasting? By drying out (removing the water) from the regolith on a slope, wildfires decrease the likelihood of a mass wasting event. A wildfire can dry out the regolith on a slope, making it less cohesive and more likely to travel downward. Wildfires burn only at the bottom of a slope, which oversteepens the slope and induces mass wasting. The ash from the wildfires lands on the slope, adding enough mass to instigate mass wasting. Because plants on a slope bind the regolith with their roots and shield the soil surface from raindrops, a wildfire that destroys these plants would render the soil looser and more susceptible to the erosional forces of rain.
Answer:
Because plants on a slope bind the regolith with their roots and shield the soil surface from raindrops, a wildfire that destroys these plants would render the soil looser and more susceptible to the erosional forces of rain.
Explanation:
The plants present in a region, protect the soil from being eroded by the impact of rain or wind. This is because the roots of the plants leave the soil more aggregated, block the impact of the wind and allow water to infiltrate. This protection is increased on slopes, where the chances of erosion are greater. However, when a fire occurs and these plants are killed, the roots no longer provide protection to the soil, leaving it drier and looser. This causes the wind to break this soil apart, facilitating erosion. In addition, rainwater has difficulties in infiltrating the soil and ends up draining, taking parts of the soil with it and causing erosion.
What happens in crossing over? Why is it important for sexually reproducing organisms, and what is one of the consequences of errors in crossing over?
Answer:
Crossing over increases the genetic variation
Errors in crossover formation result in chromosomal rearrangements (duplications and deletions) and may also cause chromosome nondisjunction
Explanation:
Crossing over, also known as recombination, refers to the exchange of genetic material (DNA) between non-sister chromatids of homologous chromosomes during meiosis. Crossing over increases the genetic variation of the resulting gametes, allowing different genetic combinations to be passed from parents to offspring. Unequal crossing over is a type of error associated with chromosomal duplication and/or deletion events. Unequal crossing over occurs when homologous sequences are not paired precisely. Moreover, errors in crossing over may also cause chromosome nondisjunction, thereby leading to aneuploidies.
What adaptations do trees have in the rainforest?
Question 7 options:
deep roots that do not spread out over a great distance
deep roots and spread their roots out over a great distance
short roots that do not spread out over a great distance.
short roots and spread their roots out over a great distance
Answer:
the answer is c
Explanation:
i took the quiz and got it right
The adaptations trees have in the rainforest are short roots that do not spread out over a great distance.
How are adaptations necessary in ecology?All organisms need to adapt to their habitat to be able to survive. This means acclimating to be able to survive the climatic conditions of the ecosystem, predators, and other species that contend for the same food and space.
Thus, the correct option is "C".
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describe how the mammalian heart is adapted to it's function
Answer:
The ventricles are thick walled; to pump blood to the lungs and the rest of the body. The left ventricle has thicker wall to create more pressure because it pumps blood for longer distances round the body; while the right ventricle pumps blood to the lungs close to the heart.
What word means "between the dorsal wall and peritoneum” and refers to the location
of the kidneys?
Answer: The kidneys are situated in between posterior abdominal wall and partial peritoneum.
Explanation:
Kidneys are located at the dorsal side of the body of vertebrates including humans. These are located opposite to the spine. The location of the kidney is the retroperitoneal space that lies in between the posterior abdominal wall and partial peritoneum. Peritoneum is the serous membrane which forms the lining of the abdominal cavity. It also covers the kidneys from the dorsal side. The kidneys are well protected by muscles and fat at the dorsal side.
What is the difference between Gene Pool, Genetic Drift and Gene Flow?
Answer:
Genetic drift is referred to the changes in allele frequency in a gene pool. Gene flow is the process of alleles moving from one population to another.
Explanation:
If the black line represents a reaction without an enzyme and the red line represents the same reaction with the addition of an enzyme, what can be said of the relationship between the use of an enzyme and the energy of the reaction?
A.
Less energy is released by a reaction without an enzyme.
B.
More energy is absorbed by reactions without an enzyme.
C.
More energy is absorbed by a reaction with an enzyme.
D.
Less energy is released by a reaction with an enzyme.
Answer:
more energy is absorbed by reactions without an enzyme.
Answer:
D.
More energy is absorbed by reactions without an enzyme.
Explanation:
How is the instructions for your traits carried on a DNA molecule?
Sequence of the nitrogen bases
In the bond between the phosphate and the sugar
O In the Deoxyribose Sugar
O In the phosphate group
Sequence of the nitrogen bases
What geological feature is found along the sides of the grand canyon?
What does this feature turn into?
Answer:
The Colorado River has carved the Grand Canyon into four plateaus of the Colorado Plateau Province. The Province is a large area in the Southwest characterized by nearly-horizontal sedimentary rocks lifted 5,000 to 13,000 feet above sea level.
hope this answer helps you.....
the illustration below shows a cellular process which of the following is shown in this illustration a gene expression b DNA replication c DNA translation d transcription
Answer:
dna replication
Explanation:
Answer B
Match each explanation to the correct step of the Scientific
Method.
Explanation:
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Pls answer fast!!!! Timed!!!
Which of these descriptions best contrasts safety knowledge for cows and horses?
A. Horses have a definite flight zone, whereas cows do not
B. Cows will startle at sudden movement or noise, but horses do not.
C. Cows have a definite flight zone, whereas horses do not.
D. Cows have 360-degree vision, but horses do not
Answer:
Cows have a definite flight zone, whereas horses do not. So the answer is C.
If a wolf eats a herbivore, the energy is transferred ________.
Explanation:
enrgy used and it will help woth the enery that the herbivore ate
Answer:
from the herbivore to the wolf
Which phase occurs immediately after a full moon?
waxing gibbous
waning crescent
waning gibbous
waxing crescent
Type the correct answer in the box.
The temperature equivalent to 77°F is
°C.
Use the formula to convert the temperature.
Answer:
25 degree celcius
Explanation:
formula
(given degree Fahrenheit - 32)×5÷9
(77 - 32)× 5÷9
= 25°C
Here I will show you how to convert 77 F to C so you know how hot or cold 77 degrees Fahrenheit is in Celsius. The F to C formula is (F − 32) × 5/9 = C. When we enter 77 for F in the formula, we get (77 − 32) × 5/9 = C.
so therefore the answer is 25 degrees celsius
why do spider bites itch?
how many milliliters of acetic acid solution (contents of weigh boat C) did you have to add to neutralize the contents of Beaker B, the sodium bicarbonate?
Answer: SDFGHNJMNJHIBUGVFCVGBJHNK
Explanation:DXGNK MBFCHBJKN
These weeds are growing in a farmer's field. The weeds compete with the soybean plants the farmer grows, so he needs to get rid of them. For a few years, the former relies on manually removing the woods, but that is labor intensive and limits how much crop he can grow. The farmer decided to change his crop to genetically modified soybeans that are herbicide resistant. This allows the farmer to use chemicals to remove the weeds. With this GM soybean, the chemical kills the woods but does not harm the crop. For many years this works, and allows the farmer to expand his farm and grow more soybeans. But then, one of the farmer's fields has a large weed plant remaining after the field has been sprayed with herbicide
1. Which of the following is the likely reason the weed has remained?
a. The weed needed to be resistant in order to survive, so it became resistant
b. A mutation appeared in one weed plant that made that weed not susceptible to the herbicide
2. Which of the following is likely to happen if that weed stays in place?
a. The trait will spread to nearby weeds
b. The weed will survive long enough to reproduce
c. In time, the herbicide will no longer be effective on that field.
Answer:
1) A mutation appeared in one weed plant that made that weed not susceptible to the herbicide ( B )
2) The weed will survive long enough to reproduce ( B )
Explanation:
1) The most likely reason the weed remained is : A mutation appeared in one weed plant that made that weed not susceptible to the herbicide
The weed plant must have undergone some mutation in order to be resistant to the herbicide which would kill the weed before now
2) The most likely thing that will happen if the weed stays in place in that farm is : The weed will survive long enough to reproduce
The trait or mutation of the weed cannot just spread to other weeds nearby it can only spread by reproducing more weeds of same mutation
Please give me the correct responses.Only answer if you're very good at science/biology.Please don't put links to websites or else I'll report you.
Scientists believe Polar Bears have evolved from a group of Brown Bears that became an isolated population during a time when the Earth's climate began cooling down.What are some adaptations that make Polar Bears different from Brown Bears and what do you think caused the adaptations to occur?
Answer:
One adaptation is white fur. There was probably one white cub born to a brown bear mother, and the fur helped camouflage it for safety and later, hunting. This bear would have been more successful in hunting in the arctic, so it was more likely to reproduce and pass on the white fur genes. A second adaptation is the long claws of brown bears that are used for digging through vegetation would have shortened to be safer on ice. Polar bear paws also have little sticky bumps on their paws for gripping ice.
A third adaptation is that polar bears don't hibernate in winter. In winter, there is a lot more food available to them, so they need to stay awake. A fourth adaptation is their hair is also now water repellent, because most of their food comes from the sea. A fifth adaptation is in their digestive system. Polar bears don’t digest carbohydrates as well as brown bears, because their diet has much more fat than anything else. Polar bears hunt seals and can convert the blubber into fat for their bodies to live off of when food is scarce.
The heart is important for transporting oxygen to the muscles when we exercise. How does the heart rate change when we go from sitting on a chair to running up the stairs?
A. The heart rate stops.
B. The heart rate gets slower.
C. The heart rate gets faster.
D. The heart rate stays the same.
Answer: C. The heart rate gets faster.
Explanation:
its true also give brainliest
The heart rate gets faster
Explanation:
C. Because when you are sitting your heart rate is chill put if you're moving really fast that means your heart rate is going up because you have to deep breaths over and over when you stop running.
HELPPPPPPPP!!!! what is a mutation that a polar bear can have to help conserve energy and how do genetic mutations relate to chromosomes, genes, protein, and DNA?
Answer:
wings
Explanation:
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How was a round-the-world voyage useful to Darwin for developing his theory of evolution?
Answer: During the long voyage, Darwin made many observations that helped him form his theory of evolution. For example: He visited tropical rainforests and other new habitats where he saw many plants and animals he had never seen before (see Figure below). This impressed him with the great diversity of life.
Explanation:
Animals with exoskeleton are called
Answer:
Examples of animals with exoskeletons include insects such as grasshoppers and cockroaches, and crustaceans such as crabs and lobsters, as well as the shells of certain sponges and the various groups of shelled molluscs, including those of snails, clams, tusk shells, chitons and nautilus.
Explanation:
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describe the mass and charge of particles you find in the nucleus and in the electron cloud.
Proton is the positively charged particle with a charge equivalent to 1.6×10−19C .
Neutron is a neutral charged particle i.e. zero charge.
Electrons are negatively charged particle with a charge equivalent to −1.6×10−19C .
Protons and Neutrons are inside the nucleus of an atom and contribute to the most of the mass of the atom. Electrons are revolving around the positively charged nucleus in quantized energy shells.
True or False: The larval stage of the sea urchin is called the pluteus.
Answer:
False
Explanation:
it is called planktotrophs.
Answer:
larva, which is called a pluteus, has a small, wartlike bud that grows into the adult while the pluteus tissue disintegrates. In both examples it is as if the organism has two life histories, one built on the ruins of another.
Explanation:
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Which principle tells us that this area has undergone tilting?
a. original horizontality
b. cross-cutting
c. superposition
d. inclusions
Answer:
A.
Explanation:
original horizontality
Pls answer
The human body needs minerals to survive. Without
minerals, the body could not function properly. The minerals
that make up rocks are the same minerals that someone
might eat in a bowl of cereal! The body needs about 80
different types of minerals to function properly. Iron enriches
the blood, salt maintains fluid balance, calcium fortifies the
bones, and fluorine strengthens the teeth. Most vital
minerals can be absorbed into the body from eating plants
and lean meats. However, many food manufacturers add
minerals to their products to make them more desirable to
consumers. Eating a balanced diet can ensure that the
proper amount of these essential minerals is ingested.
Question:
The passage tells us that "many food manufacturers add minerals to their products to make them more desirable to consumers." Do you think that this is a good idea? What are the pros and cons?
Answer:
You have to put down what you think and not what other people thing
Explanation:
You can simply answer this question yourself by doing research or just thinking if its a good idea
Eating vegetables and lean meats can help the body absorb the majority of essential nutrients. However, many food producers add minerals to their products to increase customer appeal.
What are nutrients?Chemical elements known as nutrients are present in all living things on Earth. They are essential to the survival of all living things, including humans, animals, and plants.
The breakdown of food by nutrients provides energy for living things. They are utilised in every bodily function of an organism.
The majority of vital nutrients can be more easily absorbed by the body when veggies and lean meats are consumed.
To boost consumer appeal, several food companies do, however, add minerals to their products.
Although processing has many advantages, it can also be harmful and reduce the nutritional value of food.
For instance, blanching causes vitamin and mineral leaching losses. Additionally, during processing, milling and extrusion might result in the physical removal of minerals.
Thus, these are some pros and cons of the given scenario.
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Which phrases describe the open-ocean zone? Check all that apply.
very little sunlight
Ofew nutrients
low temperatures
low density
located near coasts
Answer:
Very Little Sunlight
Few Nutrients
Low temperatures
Explanation:
It was correct on the test.
Hello, t8j5gq6rzt! I hope I can answer your question.
The open-ocean zone has low temperatures because there's little sunlight. So you will want to check:
Very little sunlight
Low temperatures
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