Answer:
it has a nucleus which controls the activities of the cell & is the site of DNA replication & stores genetic info.
it also has mitochondria which are the site of aerobic respiration
a cell-surface membrane which controls what enters & exits the cell
it also has ribosomes which are the site of protein synthesis
Explanation:
how does the enzyme present in the globular myosin head play its role during muscle contraction
In addition to binding actin, the myosin heads bind and hydrolyze ATP, which provides the energy to drive filament sliding. This translation of chemical energy to movement is mediated by changes in the shape of myosin resulting from ATP binding.
Select initial allele frequencies
2Click Next generation to wait a year for first generation of moths
3Click Capture moths to monitor population numbers
4Calculate phenotype frequencies in 5th generation. Record in Lab Data
5Calculate allele frequencies in 5th generation. Record in Lab Data
6Calculate genotype frequencies and number of moths in 5th generation. Record in Lab Data
p₀=0.5, q₀ = 0.5.// p₅=0.86, q₅ = 0.14.// p₅² = 0.74, 2pq₅ = 0.24, q₅² = 0.02. // 1062 Black individuals DD, 344 Black, 29 White individuals dd.
Note: Due to technical problems, in the attached files you will find the complete explanation.
1) Phenotype frequencies
⇒ F(white) = 0.02
⇒ F(black) ≅ 0.98
2) Allele Frequencies
⇒ f₀(D) = p = 0.5
⇒ f₀(d) = q = 0.5
⇒ f₅(D) = p = 0.86
⇒ f₅(d) = q = 0.14
3) Genotypic Frequencies
⇒ F₅(DD) = p² ≅ 0.74
⇒ F₅(Dd) = 2pq = 0.24
⇒ F₅(dd) = q² ≅ 0.02
4) Number of individuals
⇒ DD Black individuals → ≅ 1062
⇒ Dd Black individuals → ≅ 344
⇒ dd White individuals → ≅ 29
----------------------------------
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For the following organisms, choose the correct order of increasing trophic level. a. fungi, deer, wolf and grass b. fungi, grass, wolf and deer c. grass, deer, wolf and fungi d. grass, fungi, wolf and deer Please select the best answer from the choices provided
Answer:
Your answer is C
Explanation:
The correct answer is for the following organisms, is grass, deer, wolf and fungi that is the option c as the trophic level refers to the position of an organism in a food chain.
The trophic level refers to the position of an organism in a food chain or food web. In a food chain, energy flows from one trophic level to the next as organisms are eaten by other organisms. Grass occupies the first trophic level as a primary producer. Deer occupy the second trophic level as they feed on primary producers (grass). Wolves are carnivores and occupy the third trophic level as they feed on herbivores (deer). Fungi occupy the last trophic level as decomposers, so this is the correct order among all other options.
Thus, correct option is option c.
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Name ALL the alleles that control human blood groups.
Human blood groups are governed by three alleles. These are called I A ; I B ; I O .
I B shows the codominance
I O is recessive to both other alleles
What property of water describes the molecule as acting like a tiny magnet?
Answer:
Intermolecular forces
Water is a dipole and acts like a magnet, with the oxygen end having a negative charge and the hydrogen end has a positive charge. These charged ends can attract other water molecules.
The entire electron densities of the two hydrogen atoms get attracted towards the oxygen atom. Thus a polarity develops in each O−H bond, and therefore, the water molecules are polar in nature and act like little magnets.
Explanation:
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2. The volume of water in the pot decreases during this investigation. Water droplets form on
the mirror when positioned over the pot. In this setup, water
Heating Water
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Water
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Glow
Electile How
2. Vaporizes and then freezes
b. Vaporizes and then condenses
c. Condenses and then vaporizes
d. Freezes and then vaporizes
We can confirm that throughout this experiment, the water vaporized, then condensed into a liquid once again.
Why did the water vaporize and then condense?As the water was heated by the electric heater, its internal temperature increased. Once this temperature reached the boiling point of water, the water vaporized or evaporated into a gas. This gas then reached the mirror, where it collected and cooled down, condensing back into a liquid in the form of water droplets.
Therefore, we can confirm that throughout this experiment, the water vaporized, then condensed into a liquid once again.
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A very persistent pollutant would
A. biodegrade immediately
B. be the easiest kind to remove
C. only be made up of natural elements
D. remain in the environment for a long time
Answer:
D
Explanation:
Because they can be transported by wind and water, most POPs generated in one country can and do affect people and wildlife far from where they are used and released.
Explain how mental health are caused by substance abuse
Answer:
This is because: Certain illegal drugs can cause people with an addiction to experience one or more symptoms of a mental health problem. Mental health problems can sometimes lead to alcohol or drug use, as some people with a mental health problem may misuse these substances as a form of self-medication.
Answer:
Substance abuse can cause prolonged psychotic reactions and it can make anxiety, depression even worse.
In RNA, the nucleotide _______ is used in place of thymine in DNA. In eukaryotes, mRNA is transcribed in the _______ and then transported to the cytoplasm for translation. tRNA molecules physically link the mRNA message and the _______ it encodes for. The ribosome is made of proteins and _______.
Answer:
1) Uracil
2) Nucleus
3) Amino acid
4) RNA (rRNA)
Explanation:
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"Adaptations develop in response to environmental changes. For example, if a human population was displaced into the ocean, eventually the individuals would develop gills and fins to survive in the water." Is this statement true or false? Explain your answer.
Answer:
uh Photoperiodism
Explanation:
What happens to a species when the environment undergoes a radical change (e.g. due to climate, food source) and the organisms do not adapt? Explain your answer in not less than 3 sentences. May cite a hypothetical; situation to explain the answer.
Answer:
If an environment rapidly changes and an organism cannot adapt it will mostly die out. For example, some birds have long, thin beaks that let them reach insects inside trees. If these insects were to disappear for some reason and seeds became the main food source then the birds with long, thin beaks would not be able to eat. Other birds with different adaptations, like short, strong beaks, would be properly adapted to this new environment. So, this second species would replace the first species.
4) A hypothetical bacterium swims among human intestinal contents until it finds a
suitable location on the intestinal lining. It adheres to the intestinal lining using a feature
that also protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from
a human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan. The cell
also lacks F factors and F plasmids. Which of the following statements about the bacteria
is most probably accurate?
A) The bacterium cannot donate DNA through conjugation with another cell.
B) The bacterium cannot take up DNA from its external environment.
C) The bacterium cannot form an endospore.
D) The bacterium cannot reproduce.
Where is the Sun located?
A.
within a certain spiral arm of the Milky Way Galaxy
B.
many light years outside of the Milky Way Galaxy
C.
near the outermost edge of the Milky Way Galaxy
D.
near the center of the Milky Way Galaxy
Answer:
I believe the answer is A
Explanation:
The Sun is located in the Orion Arm
Answer:
a
Explanation:
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Where do frogs live on a new one day or so long day and a week ago on
Answer:
This frog lives in a wide range of areas, including Tasmania, Victoria, New South Wales, Queensland, parts of South Australia and in Kununurra in Western Australia. It can live along the wet coast or even in the dry interior of Australia - it's a great survivor.
Select all the correct answers.
Read the two excerpts in the passage. Which common elements of narrative nonfiction are used in the excerpts?
and
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The excerpts use dialogue to convey the characters' motivations.
The excerpts contain descriptive details that engage the reader.
The excerpts rely on first-person narration to build up the plot.
The excerpts explore various internal conflicts faced by the protagonists
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Answer:
B. The excerpts contain descriptive details that engage the reader.
C. The excerpts rely on first-person narration to build up the plot.
Explanation: Plato 5/5 100%
Answer:
B. The excerpts contain descriptive details that engage the reader.
C. The excerpts rely on first-person narration to build up the plot.
Explanation:
Pancreatic fluid contains enzymes that can digest all four types of macromolecules: carbohydrates, lipids, proteins, and nucleic acids. Into which organ does the pancreas excrete those enzymes?
A. Small intestine
B. Large intestine
C. Stomach
D. Liver
Answer: A
Which of the following is not a reason to question the information one receives? a. It agrees with previous experience. b. It does not agree with previous experience. c. It agrees with common opinion. d. It does not agree with common opinion. Please select the best answer from the choices provided A B C D
Answer:
the answer would be A
Explanation:
edge 2022
An aquatic food chain would be found in Earth's_____?
1) lithosphere
2) hydropshere
3) atmosphere
4) troposphere
Please I need answer
Answer:
Heat is the answer because it is only the type of energy while other are molecule
Help!
Populations of which taxa are likely to benefit if the numbers of voles and mice increased?
The population of the secondary and tertiary consumer will increase if the numbers of voles and mice increased.
What is Population?This refers to the number of people or inhabitants occupying an area. The increase in the primary consumers in the ecosystem means that there will also be a corresponding increase in secondary and tertiary consumer.
This is due to the availability of food for them which will increase their survival chances and reproductive rates.
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could please given me similarities or different adptive radiation evolution, and divergent and convergent evolution ?
Answer:
Three main differences between convergent and divergent evolution are: Convergent evolution shows how species have evolved separately but have similar (analogous) structures. Divergent evolution demonstrates how species can have common (homologous) anatomical structures which have evolved for different purposes.
Explanation:
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A vaccine is a substance that contains all or part of a noninfectious version of a disease-causing organism. When the vaccine is administered to a person, the person's immune system attacks the noninfectious version of the organism and learns to recognize its surface proteins. The next time the immune system comes in contact with the same surface proteins, it has a defense already prepared in order to respond quickly to the invading organism. In this way, a vaccine gives people immunity to the disease-causing organism.
Vaccines can be life-saving, but there have been a few cases of people catching a disease from the administered vaccine.
How might genetically engineered organisms solve this problem?
A.
Disease-causing organisms could be genetically engineered to produce insulin instead of toxins.
B.
Harmless organisms could be genetically engineered to have surface proteins from disease-causing organisms.
C.
Harmless organisms could be genetically engineered to recognize and destroy random cells in the body.
D.
Disease-causing organisms could be genetically engineered to only be harmful to plants.
The region indicated by letter A is known as
Answer:
a gene
Explanation:
thhis was a review in high school
Please refer to the image and
passage to help you answer
this question.
Why is part of the cell
membrane hydrophobic?
A. To help dissolve the organelles
B. To keep water out of the cell
C. So the cell can absorb as much water as
possible
Answer:
B to keep water out of the cell
Explanation:
hydrophobic def
What type of cell is the cell in this diagram ?
The only predator of the rabbit population in a meadow ecosystem has been removed. What is the most likely outcome in the next
6 months?
A) both the population of rabbits and the population of grasses decreases.
B) the population of rabbits increases and the population of grasses decreases.
C) the population of grasses increase and the population of rabbits decreases.
D) both the population of rabbits and the population of grasses increases.
Answer:
A) both the population of rabbits and the population of grasses decreases.
Explanation:
Since there is a larger amount of rabbits, they eat the food (grass) and then the grass amount gets smaller and the rabbits start starving and dying. So both populations would suffer.
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A student conducted a controlled experiment to test the affects of tea tree oil on the growth of Trichophyton rubrum, the primary cause of athlete's foot. He inoculated 10 test tubes of broth with the fungus and then added 1 mL of a tea tree oil solution to each.
If the results of the experiment are valid, a similar experiment will most likely produce
A.
results that are similar but with slightly different data.
B.
entirely different results with no obvious pattern.
C.
the exact same data in every circumstance.
D.
entirely different results with the opposite pattern to the first.
If the results from the controlled experiment to test the effects of tea tree oil on the growth of Trichophyton rubrum are valid, a similar experiment should produce results that are similar but slightly different data.
What is reproducibility?In science, valid results from experiments must be reproducible.
In other words, the same experiment carried out by different researchers must produce similar results with very little to no variation.
If results from an experiment are not reproducible, such results cannot be valid as far as science is concerned.
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A capillary wall is considered:
A. Narrow
B. Only one cell thick
C. Elastic
D. Wide
B or A
Explanation:
its one of those items ! pick wisely
How does drip irrigation affect the environment?
A. It cleans soils of salts.
B. It increases loss of water.
C. It minimizes evaporation.
D. It recharges groundwater supply.
Answer:
B
Explanation:
because when you put a pencil in a water it being broke but it looks like it's broken first came out it's not working.
what is difference about the outermost boundary in a plant cell compared to an animal cell?
Answer:
Cell wall: plant cells have a cellulosic cell wall, which is absent in the case of animal cells. The plasma membrane serves as the outermost boundary for an animal cell