Theo mô hình Operon Lac, vì sao protein ức chế mất tác dụng
One species has 24 chromosomes, and another species has 26 chromosomes. If these two species are crossed, how many chromosomes will their offspring have?
Species A : 2N = 24, N = 12
Species B : 2n = 26, n = 13
During the hybridization N + n = 25
What is the endosymbiotic hypothesis?
Answer:According to the Endosymbiotic Theory, the mitochondria and chloroplast in eukaryotic cells were originally aerobic bacteria (prokaryotes) that were consumed by a huge anaerobic bacterium (prokaryote).
5. Once the caffeine is removed from the plant
materials, how might the caffeine be recovered
from the supercritical Co,?
F. by forcing the Co, back through the plant
materials
G. by lowering the temperature and pressure
of the CO2
H. by changing the polarity of the caffeine
molecules
I. by using a harsher solvent
Answer:
Option C
Explanation:
Caffeine is actually supercritical carbon dioxideLowering the temperature will cool it down and can make dry ice kinda situationPressure must be low alsoOption G is correct
Population Dynamo
1
A population of alligators lives in a wetland habitat. Which of these describes a density-dependent factor that could affect this
population?
OA. A drought that lasts for several months occurs.
ОВ.
A hurricane passes through the area.
OC. Humans introduce pollutants into the water of the ecosystem.
OD
There is a decrease in prey animals in the ecosystem.
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Answer:
D) there is a decrease in prey animals in the ecosystem
Explanation:
a density dependent factor is one of the following:
dieses
competition
predation
only one makes sense answer is D)
Which of the following levels of organization is the smallest and simplest?
a. chemical level
b. cellular level
c. organ system level
d. organ level
Answer:
celllular level, chemical level, organ level, and organ system level
Explanation:
Organ system level is the is the smallest and simplest in the levels of organization.
What is Organ system level?It is one of the smallest and simplest levels of organization in which includes:atoms molecules organelles cells tissues organs organ systems and the human organism.So, Organ system level is referred as the smallest and simplest in the levels of organization. (option c)
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What are some ways that chromosomes can be structurally abnormal
Answer:
Delations: A portion of the chromosome can be missing or deleted
Duplications: A portion of the chromosome is duplicated resulting in extra genetic material
Translocations: A portion of one chromosome is transfered to another.
What is the purpose of strand B?
a.) To act as a template for the synthesis of messenger RNA
b.) To carry the code from the DNA molecule in the nucleus to the ribosome
c.) Delivers specific amino acids to the ribosome to make proteins
d.) Transfers nucleic acids to the nucleus
Answer:
The answer is a)
Explanation:
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How are the cells in the circulatory system helping me in the action of kicking a ball?Do some have specific jobs?
Answer:
Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery. Aerobic exercise trains the heart to become more efficient.
Explanation:
Complete the sentences using the given words.
caldera cinder cone crater
a. A(n) ____________ is a bowl-shaped depression that surrounds the vent at a volcano's summit. b. A(n) ____________ forms in the depression left when an empty magma chamber collapses. c. The type of volcano that is the smallest and has the steepest slopes is called a(n) ____________.
Answer
A) crater
B) caldera
C) composite
Entre los siguientes métodos de separación de mezclas, Jorge debe seleccionar el adecuado para separar sal de una mezcla de sal y agua, en la que la sal se encuentra completamente disuelta.
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Teniendo en cuenta la composición de la mezcla, ¿cuál de los anteriores métodos debe usar Jorge para separar la sal?
Evaporación, porque con este método se evapora el agua y queda únicamente la sal.
Evaporación, porque este método únicamente se usa para separar líquidos.
Filtración, porque la sal y el agua se mezclan muy bien.
Filtración, porque la sal es blanca y el agua transparente.
Teniendo en cuenta las definición de evaporación, la respuesta correcta es la primer opción: para separar la sal, Jorge debe usar la Evaporación, porque con este método se evapora el agua y queda únicamente la sal.
El método de separación utilizado para el agua y la sal es: la evaporación.
La evaporación consiste en pasar el soluto disuelto en un liquido a estado gaseoso y ocurre al aumentar su temperatura de forma natural o artificial,. Dependiendo de que se desea evaporar se utiliza el material correspondiente. La técnica mas común es por contacto y puede acelerarse si utilizamos un material conductor dentro del liquido.
En otras palabras, se conoce que la evaporación es el proceso por el cual las distintas moléculas en estado líquido, como lo es en agua, pasan a un estado gaseoso de manera espontánea, siendo este el principal efecto de la evaporación.
Como se mencionó el método de separación utilizado para el agua y la sal es la evaporación. Durante este proceso, al aplicar calor, el agua se convierte en vapor y se libera al aire. La sal, como tiene otro punto de ebullición, no se evapora.
Entonces, la respuesta correcta es la primer opción: para separar la sal, Jorge debe usar la Evaporación, porque con este método se evapora el agua y queda únicamente la sal.
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https://brainly.com/question/17429780?referrer=searchResultsDescribe trilateration. Provide an example.
3. Charles went to check out the salad bar, and told his friend;
"I can just come here every day and have Caesar salad for
lunch. I will cut down on the salad dressing" What would be the
most appropriate advice to give Charles at this time?
O a. This salad will likely meet your needs of vitamins, minerals
and fiber.
b. This salad can allow you to use kcalories remaining in your
daily energy allowance to consume some added sugar.
O c. This salad can make it difficult for you to get enough nutrients
without gaining weight.
O d. You need a variety of vegetables every day, and from all of
the subgroups every weeks.
O e. It is important to eat the same amount of salad every day.
Answer:
I think the answer is letter D
The most appropriate advice to give Charles at this time about Caesar salad is - a. This salad will likely meet your needs of vitamins, minerals, and fiber.
A classic Caesar is one of the simplest salads out there. it is a mix of romaine lettuce, parmesan cheese, and croutons.
It has a high content of calories in comparison to the other salads.Caesar salad is well-known for being unhealthy, and that is mostly due to its dressing.If dressing is removed from it then the salad would be a better option for lunch. Without dressing it provides vitamins, fat, fiber, and minerals to the body.Thus, the most appropriate advice to give Charles at this time about Caesar salad is - a. This salad will likely meet your needs of vitamins, minerals, and fiber.
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Explain how fingerprints are formed, and any instances where individuals tried to remove their prints.
Answer:
from the marks on the fingers
Imagine that the climate in your region became extremely arid, and freshwater became a scarce and precious resource. Wasteful uses of water, such as watering lawns and filling swimming pools, would be strictly outlawed, and water from the municipal water supply would cost 100 times what it does now. Discuss how you would adapt to that situation.
100 pts brainiest
One way to adapt to this situation would be by reducing water use to strictly necessary activities and collecting water from alternative sources such as rain.
What would change in this situation?Due to scarcity, in this situation, people could not use water for recreation such as water in pools, and in general water usage is limited.
How to adapt to this situation?Possibilities are restricted in this situation since it is not a good idea to continue using water excessively. Instead, the best is to:
Adapt to the change by limiting water use to necessary activities such as cooking.Try to find out alternative water sources such as collecting water when it rains.Learn more about water in: https://brainly.com/question/4381433
HELP NEED ANSWER IN AT LEAST 5 MINUTES will mark brainliest A single cell can be an organism. O True O False
Answer: Yes
Explanation: All organism need energy to survive and carry out basic life functions. Mitochondria in these cells utilize ATP (which are energy molecules) to perform these functions. Even one cell can do this. ... These are all types of cell division that help categorize single-celled organisms as living organisms.
functions of courtship behaviour
Answer:
to ensure that the two individuals are of the same species
Explanation:
It also involves stereotyped behaviours. Courtship behaviour informs a potential mate that the intention is breeding and not aggression.
Please give brainliest
Answer:
Courtship can be defined as the behavior used to obtain copulation with a partner, or to maintain reproductive interactions with an existing partner.Courtship, in animals, behaviour that results in mating and eventual reproduction. Courtship may be rather simple, involving a small number of chemical, visual, or auditory stimuli; or it may be a highly complex series of acts by two or more individuals, using several modes of communication.It help strengthen a pair bond that may last through the raising of the young or even longer.Courtship is its use as an isolating mechanism, a method of keeping different species from interbreeding.
If a liquid turns into a solid, what is happening to the energy in the liquid?
or the liquid maintains it's energy
What effect did meteor strikes have on the early
formation of Earth's crust?
What is ocean sequestration?
Answer:
it is the process by which carbon dioxide is removed from the atmosphere, is achieved through various chemical and biological processes
4. (3 pts.) In aerobic respiration, oxygen is necessary to accept the final electrons at the end of
the electron transport chain. What happens when a person cannot bring oxygen into the body
(maybe they stop breathing)? What energy molecule will not be generated? How will this affect
the organism?
Answer:
their body starts shutting down and this will cause slow and painful death
Explanation:
What is reproduction?
a. A formation of new traits
b. The process of producing new living things
c. The creation of living things from nonliving materials
d. The ability to make offspring using energy from the sun
Answer:
B
Explanation:
Reproduction is when a living thing mates and is capable of making another living thing. That means it's the process of NEW living things, because it's being created. Hope that helps:)
Answer:
Option B (The process of producing new living things)
Explanation:
Further answer:
reproduction is the process of producing new living things which is possible only in living things (not non-living things)..
animals, plants and humans can reproduce...
Chamges in blood are automatically and routinely made by the body In order to direct appropriate amounts of________and________to specific parts of the body?
Help Asap!!
Answer:
What is Oxygen & Nutrients
Explanation:
Changes in blood are automatically and routinely made by the body In order to direct appropriate amounts of OXYGEN and NUTRIENTS to specific parts of the body.
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Based on the evidence shown, two objects that have___ electric charges will ___ each other.
Primary productivity is not limited by _______.
a.
the availability of sunlight
b.
time
c.
the availability of nutrients
d.
access to water
Please select the best answer from the choices provided
A
B
C
D
A family builds a home on top of a hill. The hill has several large trees but almost no grass or shrubs. The family wants to prevent the soil on the hill around the house from continuing to erode. Describe a strategy that would help them stop the erosion.
Answer:
Remove trees to add less weight and the house should be fine after.
5514998054 ps:- 123456
1. Convection current causes the lithospheric plate to
A. move slowly but constantly
B. move faster
C. move in any direction
D. create another plate
______________________
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CAN YOU BRAINLEST ME
describe how the moon appears to move across the night sky. First person to awnser correct in the next 6 hours will be marked brainless
Answer:
The Earth is rotating
Explanation:
The Earth is rotating on it's axis
Question 1): Photosynthesis and cellular respiration are often described in two ways: 1) they are chemically opposite; and 2) they have a relationship to each other. Explain what these two statements mean. Be sure to include the specific substances used and released by each process. Question 2) Your skin is constantly producing new cells through cell division. How does this happen? During interphase, how does a cell prepare for division? Describe cell division, including the processes of mitosis and cytokinesis. Be sure to describe the mitotic steps. Question 3) Mitosis and meiosis are similar processes, but they have some very important differences. Explain how mitosis and meiosis are alike and how they are different. Provide at least two similarities and three differences. ( Please Do Not Repost Someone Else's Answer that is on Brainly Or Any Other Websites) Will Mark Brainliest .
Explanation:
Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.