Answer:
its B. a cloud of gas and dust in space
Nebula is a cloud of gas and dust in space. The correct option is B.
What is special regarding nebula?A nebula is a distinct luminescent component of the interstellar medium that can be composed of ionized, neutral, or molecular hydrogen, as well as cosmic dust.
When stars form within a nebula, they emit a stream of charged particles known as stellar wind.
Massive stars and young stars have stellar winds that are much stronger than the Sun's.
When the wind collides with the gas in the nebula, it creates shock waves or hydrodynamic instabilities, which shape the gas clouds.
Nebulae are frequently star-forming regions, as seen in the Eagle Nebula's "Pillars of Creation."
Thus, the correct option is B.
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describe how fertility drugs help women to become pregnant
Answer:
Fertility drugs contain FSH and LH, which stimulate eggs to mature in the ovary. Fertility treatments increase a woman's chance of becoming pregnant, although the treatment may not always work. On the other hand, because the treatment boosts the production of mature eggs, it increases the chance of twins or triplets.
The lock-and-key analogy is used to describe the Group of answer choices binding of G proteins to transmitter receptors. activation of the nerve impulse. action of transmitter molecules on receptor proteins. degradation of transmitter molecules by enzymes.
Answer:
The correct option is the degradation of the transmitter molecules by enzymes.
Explanation:
The key lock system is a type of enzymatic catalysis / anabolization, and is so called because the enzyme that reacts with its substrate is in the male-female or key lock format.
Enzymes can also react by other mechanisms, but this is known for the perfect fit of the substrate with the binding site, since one represents the negative of the other, once joined and the reaction started, the active site is occupied and the enzyme is not reacts with another substrate simultaneously to that one.
HELP !!!!
Which of the following statements is true of meiosis?
Answer:
The answer is option D.
it divides one diploid cell into four haploid cells
Hope this helps you
Some chefs sometimes wrap meat in papaya leaves and the meat is marinated for five hours before it is cooked. What is the purpose of wrapping with papaya leaves? (in biology terms)
Answer:
See the explanation below.
Explanation:
Marinades serve two different functions: as a tenderizer and flavor enhancer.
Depending on the cut and type of meat, it may need a little assistance to bring it to a palatable range of tenderness. Certain plant and fungi enzymes and acids can break down muscle and connective proteins in meats.
As far back as pre-Columbian Mexico, cooks found that wrapping meats in papaya leaves before cooking made for more tender results. The active enzyme in the papaya leaves is papain, now refined from papayas and commercially available. The connective tissue that comes in direct contact with the protein-digesting enzymes gets broken down. These tenderizing enzymes also reduce the capability of the meat to hold its juices, resulting in greater fluid loss and thus drier meat.
Which macromolecules provide instructions for growth? O A. Lipids O B. Nucleic acids O c. Carbohydrates O D. Proteins
Answer:
B
Explanation:
The macromolecule which provides instructions for growth is nucleic acids. The correct answer is option B.
Macromolecules are large molecules made up of smaller subunits called monomers. There are four main types of macromolecules found in living organisms:
carbohydrateslipidsnucleic acidsproteins.Nucleic acids are macromolecules that store and transmit genetic information. DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are the two main types of nucleic acids. DNA contains the genetic instructions for the development and function of all living organisms, while RNA plays a key role in the process of protein synthesis. When cells divide and grow, they must replicate their DNA so that each new cell receives a complete set of genetic instructions.
Therefore, nucleic acids provide instructions for growth. Option B is the correct answer.
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Which of the following can a chemical bond do?
Answer:
Chemical bonds are forces that hold atoms together to make compounds or molecules. Chemical bonds include covalent, polar covalent, and ionic bonds. Atoms with relatively similar electronegativities share electrons between them and are connected by covalent bonds.
Briefly describe two ways in which the Hardy-Weinberg equation can be used to get information about a population.
Answer:
The Hardy-Weinberg equation can be used to gather valuable information about a population in the following two ways:
1) Estimating allele frequencies: The Hardy-Weinberg equation allows scientists to estimate the frequency of specific alleles within a population. By comparing the observed frequencies with those predicted by the equation, researchers can determine if the population is in genetic equilibrium, meaning that the allele frequencies are stable and not evolving over time.
2) Identifying evolutionary forces: If a population deviates from the expected Hardy-Weinberg equilibrium, it suggests that one or more evolutionary forces, such as natural selection, genetic drift, gene flow, or mutation, are at play. By analyzing these deviations, scientists can gain insights into the factors influencing the genetic makeup of the population and better understand the evolutionary processes driving changes in the population's gene pool.
Explanation:
The three major processes in the water cycle are salinity, evaporation, and precipitation.
Answer:
Hey there!
That is false. The three stages in the water cycle are evaporation, condensation, and precipitation.
Hope this helps :)
Which is not likely to be studied by a biologist?
Answer:
there are many things that are not studied by biologist such as physics, figuring out new elements
Explanation:
biologists are people that study peoples life
Answer:
clouds
Explanation:
What percent of the energy animals get from
food is lost as bodily waste?
Answer:
roughly 90 percent of stored energy is lost as waste heat each time
Answer:
In general, roughly 90 percent of stored energy is lost as waste heat each time you go up the food chain by one trophic level. In other words, animals, on average, convert just 10 percent of the energy available from the organisms they eat into stored chemical energy.
Explanation:
what is not a feature of natural selection
a) competition for resources
b) production of many offspring
c) selection by humans
d) variation within the population
Answer:
C
Explanation:
Selection by human is defiantly not natural selection. Selection by human is called selective breeding which is when two different breeds are put together to produce an offspring with special characteristics.
Hope it helps.
Eukaryotic cells of humans and animals possess a selective advantage in the fact that
they are capable of both aerobic and anaerobic cellular respiration.
Consider the following statements:
1) Anaerobic respiration allows glycolysis to continue
II) Anaerobic respiration generates more ATP per molecule of glucose
III) Anaerobic respiration regenerates NAD+
IV) Anaerobic respiration prevents the build-up of excess oxygen in the mitochondria
V) Anaerobic respiration results in the removal of a molecule of carbon dioxide per molecule of pyruvate.
Which of the statements best reflects this selective advantage?
A) I and II
B) I and III
C) II and IV
D) I, III, and V
E) II, III, and IV
The theory of plate tectonics helps to explain _____.
If a plant has a high concentration of minerals inside its root cells, but does not have enough energy for active transport, what could happen to the minerals?
Answer:
The minerals will not be move or transported to other part of the plants because active transport require energy.
Explanation:
Active transport is a process where molecules and ions are move against a concentration gradient by using energy.
This process require energy, for ions or molecules of minerals to be taken up by plants, it is first moved to the root hairs where they are in high concentration against in dilute concentration on soil Active Transport then occur in the roots where it is taken up to the plants with the use of energy.
If there is not enough energy, active transport will not occur and the minerals will remain in the root hair and will not be move to other part of the plant.
explain why traits that aren’t present in either parent could show up in the offspring or in future generations of the offspring.
It can show because it can be a recessive trait that can be showed up in ones genes. Recessive traits can be less present in parent parents but if both parents have similar recessive traits it can be able to show up in offspring and future offspring. Also it can show in offsprings because of earlier generations. The parents might not have these traits but grandparents are great grandparents might have the traits.
How could a scientist use the scientific method to learn more about the Cretaceous era?
First, it is necessary that this scientist decide on what point of the Cretaceous period he wants to study. Among several points he may want to study the evolution of microorganisms of that time, the life of a dinosaur species, or the evolution of dinosaurs, the flora that was established during this period, among others. This is the phase of the scientific method called Observation.
After that, he must enter the phase called "Elaboration of hypotheses" where he will raise questions about the point he decided to study. "How many flower species existed in that period?", "How many of these flowers can we observe today?" among others.
After that, he will enter the phase called "Experimentation", where he will establish a type of experiment and all the experimental factors and variables that will allow the hypotheses to be answered.
After the experiment he will collect the data that will be analyzed and that will give results that will answer the hypotheses previously established. This is the phase called "Analysis of the results".
At that moment, he will be able to reach the last phase of the scientific method, the phase called "conclusion", where he will show the conclusions that the experiment allowed to be established.
The Cretaceous period was a prehistoric period that took place between about 140 and 60 million years ago. If a scientist wanted to use the scientific method to learn more about this time, he should implement the following steps:
Identify an unresolved issue or problem that you would like to address. Make a hypothesis that raises answers to these questions or problems. Carry out a series of investigations and experiments dedicated to verifying the hypotheses raised. Finally, having verified the hypotheses, propose a law or rule for the investigated questions.Learn more in https://brainly.com/question/19496416
Give the names of two co- enzymes that take part in the cellular respiration.
Answer:
Explanation:
Two of the most important and widespread vitamin-derived coenzymes are nicotinamide adenine dinucleotide (NAD) and coenzyme A. ... When NAD loses an electron, the low energy coenzyme called NAD+ is formed. When NAD gains an electron, a high-energy coenzyme called NADH is formed.
During handwashing, how do you turn off the water?
Answer:
Well you can use your elbow to turn it off.
Answer:
I use my hands
Explanation:
I turn the water on, then rinse my hands, get the soap, rinse them off, and them turn the water off and dry.
Which of the following shows steps that happen to the chromosomes in Meiosis in the correct order?
Answer:
Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.
Can someone please help me
Answer:
Trypsin
Explanation:
Rennin has an optimum pH of 3.4.
Pepsin has an optimum pH of 2.0.
Trypsin has an optimum pH of 7.5.
Salivary amylase has an optimum pH of 6.5.
Enzyme Y is Trypsin.
Determine whether or not a rose is alive and, if not, what characteristic of life is
it missing?
A. No, it is missing the characteristic of movement.
B. No, it is missing the characteristic of being made of cells.
C. Yes
D. No, it is missing the characteristic of responding to stimuli.
Answer:
d
Explanation:
NO, the rose is missing the characteristic of responding to stimuli, so it's not alive.
What are the characteristics of life?
All living things share a number of essential traits or abilities, such as order, environmental sensitivity or responsiveness, reproduction, growth and development, regulation, homeostasis, and energy processing. These qualities help to define life.
Reproduction: In order to be regarded as alive, an object must be able to reproduce and produce children.HeredityHeredity is the capacity of parents to transmit genetic material (DNA) to their children. This can take the shape of genotypic qualities as well as phenotypic traits, which describe how a living thing appears on the exterior.Cellular OrganizationAll living organisms are organized cellularly and are made up of one or more cells.Growth and DevelopmentAll living things grow and develop as they age, becoming more physically and psychologically mature.Adaptation Through EvolutionEvery living thing has undergone some level of evolution, and they all continue to do so in order to adapt to a constantly changing environment.Response to StimuliLiving things react to environmental stimuli.Homeostasis A living thing's capacity to maintain steady internal conditions, such as blood pressure, body temperature (thermoregulation), and water balance inside cells, is known as homeostasis.MetabolismAn organism must use chemical processes to break down and/or use materials from the environment in order to maintain its function, which is known as metabolism.
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What is the purpose of using reverse transcription
Answer:
reverse transcriptase (RT) is an enzymeused to generate complementary DNA (cDNA) from an RNA template, a process termed reverse transcription. Reverse transcriptases are used by retroviruses to replicate their genomes, by retrotransposon mobile genetic elements to proliferate within the host genome, by eukaryotic cells to extend the telomeres at the ends of their linear chromosomes, and by some non-retroviruses such as the hepatitis B virus, a member of the Hepadnaviridae.
Explanation:
brainliest appreciated
how is meiosis similar from mitosis
A. both occur in somatic cells
B.both produce two daughter cells
C. both are forms of cell reproduction
D. both involve two divisions of a cell
Answer:
C
Explanation:
Both helo with cell division or reproduction of cells.
Hope this helps!
How is sexual orientation different from gender?
Answer:
sexual orientation is how you feel and what genders you are attracted to sexually (straight, bisexual, lesbian, etc) gender is what you were born as or who you identify as.
Explanation:
Which of the following describes the function of carbohydrates? A. Carbohydrates store hereditary information. B. Carbohydrates help leaves absorb the sun's energy. C. Carbohydrates surround and protect internal organs. D. Carbohydrates store energy in their bonds.
Answer:D. Carbohydrates store energy in their bonds
Explanation:
The C—H bonds found in carbohydrates store energy
Answer:
D
Explanation:
AP3X
The process of nitrification is
carried out by what group of
organisms?
A. producers
B. animals
C. bacteria
answer
bacteria I think
during photosynthesis, the energy fro. Sunlight is used to split water molecule. What happens to the hydrogen ions that are split from water molecule
Answer:
Hydrogen ions are transported across the thylakoid membrane. Hydrogen ions diffuse through a protein channel.
Explanation:
Assignment: 02.03 Oceans Impact on Weather
what do we call the chemical substances necessary for an organism to sustain life A. energies B. nutrients C. supplements
Answer:
B. nutrients
Explanation:
Nutrients are chemicals present in all living things on Earth. They are essential for the lives of humans, plants, animals ,and all other species. Nutrients help remove food that provides energy to the species. Carbon, hydrogen and oxygen are the most essential nutrients which they need.
Hence, option B is correct as it is necessary for sustain the life of an organism
Answer: B.
Explanation: Nutrients are chemical substances found in every living thing on Earth. They are necessary to the lives of people, plants, animals, and all other organisms. Nutrients help break down food to give organisms energy. The most important nutrients they need are carbon, hydrogen, and oxygen.
They need
air, light and
warmth.
Explanation:
Yeast is the answer. It can be any type of microbe