Answer
Mutations in the promoter sequence prevent RNA polymerase from binding and transcribing the operon; this results in no expression.
Binding of the CAP protein (bound to cAMP) to the CAP-cAMP binding site facilitates the binding of RNA polymerase to the promoter sequence. Mutations in the gene that encodes the CAP protein or in the CAP-cAMP binding site make binding of RNA polymerase to the promoter less likely. This results in a lower than normal expression of the operon.
Loss of function mutations in the repressor protein or in the operator region to which it binds prevent the repressor from blocking transcription. This results in constitutive expression of the operon.
Gain of function mutations in the gene for the repressor (super-repressor) cause the repressor to bind to the operator even in the presence of lactose; this results in no expression.
Mutations in the lacZ gene which encodes beta-galactosidase result in no expression of beta-galactosidase.
Are The properties of the reactants in this investigation are the same as the properties of the products
Answer:
Compounds usually have very different properties than the individual elements that make up the compound.
Explanation:
Because the reactants and products of the investigation are unknown, properties can't be determined so I can't really help much.
The precentage of offspring would be heterozygous from the following cross of alleles BB(dominant) x bb(recessive)
A. 25%
B. 50%
C. 100%
Answer:
C. 100%
Explanation:
Refer to image :)
Describe 3 ways a volcanic eruption can affect the biological and human populations around the volcano
Answer:
Volcanic eruptions can cause the loss of human life and can devastate wildlife habitats. The blast from an explosive eruption can knock down trees, destroy buildings, and kill humans and other animals. During an eruption, pyroclastic flows can race down the slope of a volcano and burn everything in their path.
Explanation:
why dies red blood cells disk shaped
The cell theory includes different tenets to explain the organization of life. What principles comprise the cell theory
Answer:
All organisms are composed of one or more cells, and the life processes of metabolism and heredity occur within these cells.
Explanation:
Which three of these classes of animals practice internal fertilization?
Mammals
Birds
Amphibians
Repriles
Arthropods
Answer:
Mammals
Explanation:
This is because the sperm meets the egg and fertilizes it in a female mammals which occurs in the ovary
Which of these plants are thought to be the first land plants and the main food source for large dinosaurs?
1. Mosses
2. Ferns
3. Evergreens
4. flowering trees
Answer:
out of all of them its going to be ferns
Answer: I'm sure it is going to be evergreens
Explanation:
Pleasee I need help!!
What elements make up water?
What elements make up proteins?
What three elements make up fats?
In which of the following is there a greater Carbohydrate composition?
Oil
Chicken
Apple
Beef
Answer:
1)hydrogen and oxygen
2)carbon,hydrogen,oxygen and nitrogen
3)carbon,oxygen and hydrogen
4)oil
Explanation:
A mixture of freshwater draining from the land and salty seawater is called __________ water.
Answer:
brackish water
Explanation:
Estuaries are home to unique plant and animal communities that have adapted to brackish water—a mixture of fresh water draining from the land and salty seawater.
Does translation occur when the codons in the mRNA are “read”?
Answer:
During translation, an mRNA sequence is read using the genetic code, which is a set of rules that defines how an mRNA sequence is to be translated into the 20-letter code of amino acids, which are the building blocks of proteins.
What is the best example of how nervous system maintains homeostasis
Answer:
The nervous system regulates breathing and heartbeats but it's also responsible for regulating the core temperature of the body. So when conditions are too warm or hot and body temperature rises, the blood vessels can dilate causing heat loss. Nerves can trigger sweat glands to release fluid that evaporates and cools the skin so that body temperature begins to lower to a normal condition.
Genes are regions in DNA that contain the instructions to make a protein.
True
False
Answer:
False.
Explanation:
Genes doesn't contain in DNA
Which best describes Radiometric dating?
A. Measures the breakdown of radioactive materials in a sample
B. Measures the accumulation of radioactive metric materials in a sample
C. Measure the amount of radioactive metric in a sample
D. Measure radiometrics
Answer:
Measures the breakdown of radioactive materials in a sample.
Explanation:
Radiometric dating, is a technology thats used to date objects such as rock or graphite in which microscopic radioisotope contaminants were deliberately integrated while they were produced.
PLSSSS HELP IF YOU TURLY KNOW THISS
A low water concentration means a
solute concentration
high
low
Answer:yes
Explanation: when the concentration of a solute is high, the concentration of water is lowered since there is more solute per water, less water per solute. Thus, when water moves from low concentrations of solute to high concentrations of solute, it moves from high concentrations of water to low concentrations of water.
Answer:
high
Explanation:
If the concentration of the water is low ten that means the solute-solvent ratio is high which means the solute(solid dissolved) is high
Which choice describes climate
Answer:
3rd Choice
Explanation:
1, 2, and 4 all describe natural disasters that have affected the world in the past. The 3rd is only different because it has the word "usually" which implies that it has a long-lasting way of staying that way and usually is like that, which is pretty much the definition of "Climate".
hope i was helpful! :D
NO FAKE ANSWERS AND NO LINKS. Now that you know about newton’s first law of motion, how might you use it to ride a skateboard safely?
Answer:
Newton's first law of motion states that an object at rest will remain at rest and an object in motion will stay in motion unless it is acted on by an unbalanced force. To start a skateboard rolling over a level surface, you need to push off with one foot against the ground.
Explanation:
Hopefully this helps :)
Answer:
In the absence of friction or any other unbalanced force, a skateboard in motion will just keep on rolling. Explanation: If an object is already in motion, inertia will keep it moving. Therefore, a skateboard at rest will remain at rest unless acted upon by an unbalanced force.
Natural selection relies on genetic variation. In any population of beetles, there are alleles for brown or green color. What happens to the genotype and the phenotype of the beetle population when there are distinct advantages and disadvantages due to color
Answer:
1) variation in traits.
population of beetles: equal brown and green numbers in population.
2) differential reproduction.
Natural habitat is in trees. Green leaves hide green beetles.
The brown beetles are noticed by birds in the area.
Birds eat brown beetles.
More green beetles survive than brown beetles
3) heredity
Green beetles reproduce in greater numbers than brown beetles
4) end result
Beetle population changes from brown and green to mostly green beetles.
Explanation:
B. List down 15 measures in keeping workplace clean and safe
Answer:
Eliminate potential hazards.
Make sure all workers are properly trained.
Ensure workers have the proper equipment.
Provide visual safety aids and messages.
Create a safety committee
and hold monthly safety meetings.
Make safety fun.
Use proper storage for everything.
Get rid of what you don't use.
Move to a paperless office.
Shop around for cleaning supplies.
Organize your cables.
Don't eat at your desk.
Take turns cleaning.
Explanation:
How does the amount of sugar affect the carbon dioxide production in yeast?
Answer: Sugars cause the gluconeogenesis process to start, as well as trigger, unexpected hormone like responses causing a faster metabolism, which in return, increases carbon dioxide levels (Verstrepen, 2004). This is why both CO2 and ethanol can be used to measure the rate of respiration for yeast. Many countries that produce a high amount of sugar
Explanation:
Which food chain correctly shows the direction that energy and matter can flow through a temperate forest ecosystem?
a) fruit > insect > sparrow > hawk
b) hawk > fruit > insect > sparrow
c) insect > sparrow > hawk > fruit
d) insect > hawk > fruit > sparrow
Answer:
A is the anwser
Explanation:
First on the food chain starts with a producer, then primary consumer, then secondary, and lastly territory.
The brown tree snake is a native species in Australia. In the twentieth century, brown tree snakes were accidentally transported by
ship from Australia to Guam. These snakes prey on birds, lizards, bats, and rodents such as mice.
The population of brown tree snakes in Guam grew rapidly because these snakes
had few predators and little competition for food.
Eventually, the snakes destroyed entire populations of small mammals and birds. The biodiversity of Guam was harmed
A scientist wants to improve the biodiversity of Guam by controlling the brown tree snake population. Which of the following should
be included in the scientist's solution?
All ships coming from Australia should be inspected to make sure there are no brown tree
snakes on board
A new species that can breed with brown tree snakes should be introduced into the
ecosystem
People living in Guam should move to new locations away from brown tree snakes.
Poison that is toxic to brown tree snakes should be placed with dead mice, and the mice
should be placed in areas with large numbers of brown tree snakes.
Answer:
the answer B
Explanation:
I took the test
Answer:
The answer is
A. "All ships coming from Australia should be inspected to make sure there are no brown tree snakes on board."
C. "Poison that is toxic to brown tree snakes should be placed with dead mice, and the mice should be placed in areas with large numbers of brown tree snakes."
Explanation:
A fold shaped like an elongate arch is a(n) ________. Group of answer choices dome syncline basin anticline
A fold shaped like an elongate arch is an anticline.
What is an anticline?An anticline occurs when the rock folds, this folding of the rock gives rise to an arch like shape.
The folding occurs in the strata layer of the rock to give an anticline.
Therefore, a fold shaped like an elongate arch is an anticline.
Learn more on anticline here,
https://brainly.com/question/7125247
Fred and Wilma find it difficult to conceive naturally. Tests reveal that the infertility is because of Fred's extremely low sperm count. To help Wilma conceive, Dr. Samuel injects Fred's sperm into Wilma's cervix. This procedure is called
This process is called artificial insemination. It is a medical procedure used to help fertilization.
Whta is artificial insemination?Artificial insemination is a medical procedure to help to fertilization of a female egg (female gamete) cell with a spermatozoid.
During fertilization, a female egg cell fuses with a spermatozoid cell (male gamete) to create a diploid zygote.
During development, this cell (diploid zygote) will divide many times to generate an embryo.
Learn more about artificial insemination here:
https://brainly.com/question/11263378
Which blood type is known as the universal recipient?.
Answer:
AB positive blood type
Explanation:
AB positive blood type is known as the “universal recipient” because AB positive patients can receive red blood cells from all blood types.
Answer:
AB positive
Explanation:
AB positive can receive red blood cells from all blood types.
what are nodes and internodes?
Answer:
The place from where the leaf arises is known as node. The space between the two consecutive nodes is known as internode.
Explanation:
What are ways in which living things take in and get rid of water?
Answer: respiration
Explanation: It's when the oxygen chemically reacts with sugar inside the cells to release energy. This produces the gas carbon dioxide, which the body needs to get rid of and some water.
Why do you suppose the latency differed between the median and lateral fibers?.
Answer- The Medial Giant Fiber is larger and therefore allows the transmission of action potentials down its length much faster than the Lateral Giant Fibers.
Explanation:
i will give brainliest Prepare for Macbeth: Summary and Predictions Instructions Prepare for our reading of Macbeth by reading this summary. Copy and paste the information below into the submission box, then fill in your answers. Something I already know about the play Macbeth, or about the playwright Shakespeare, is . . . I predict that Macbeth Act I will be about . . . My summary of Macbeth Act I is . . . I predict Macbeth Act II will be about . . . My summary of Macbeth Act II will be about . . . I predict that Macbeth Act III will be about . . . My summary of Macbeth Act III is . . . I predict Macbeth Act IV will be about . .. My summary of Macbeth Act IV is . . . I predict Macbeth V will be about . . . My summary of Macbeth Act V is . . . One that I was surprised to learn about Macbeth from reading the summaries is . . .
Answer:
Explanation:
A complete summary of William Shakespeare's Play, Macbeth. Find out more about his desire to be King and the lengths that he and his wife will both go.
What is the relationship between DNA, RNA, and proteins
Answer:
closely related
Explanation:
DNA, RNA, and protein are all closely related. DNA contains the information necessary for encoding proteins, although it does not produce proteins directly. RNA carries the information from the DNA and transforms that information into proteins that perform most cellular functions.