Answers
Answer: the answer is the second to last one
Explanation:
Related Questions
what does this mean about the relationship between an allele’s frequency and it’s likelihood of being dominant ?
Answers
Use the drop-down menus below to match each
example to the corresponding type of mutagen.
tanning beds
X-rays
cigarettes
Answers
Answer:Tanning Beds: UV rays
X-rays: Radiation
Cigarettes: Chemicals
I hope this helps
Explanation:
Answer: B.) UV rays A.) radiation C.) chemicals
Explanation: i hope this helps :)
About one quarter of drugs prescribed in the U.S. comes from
A. plants
B. protists
C.animals
D.fungi
Answers
What is the primary source of nitrogen and phosphorus for a secondary consumer? *
Answers
Answer:
Remains of living organisms
Explanation:
Secondary consumers get their nitrogen and phosphorus from the remains (decayed bodies) of living organisms.
When plants and animals die and decay, microorganisms feed on their dead bodies, the activities of microorganisms (such as bacteria) on the remains of living organisms leads to the production of nitrogen and phosphorus for secondary consumers.
Therefore, the source of nitrogen and phosphorus for secondary producers is the remains of living things(e.g plants and animals).
Read the following passage. Click on the incorrectly used words and type the correct words to replace them.
Estuaries and wetlands support important ecosystems and can also protect surrounding areas from foods and tidal storm surges. When flooding does occur,
estuaries and wetlands soak up excess pollution and then niter the water through sand and other sediments into the groundwater or river system. They also
control erosion with water that holds soll in place. Following a food, the plant matter from wetlands feeds many species further down the river
system. Estuaries contain species that are tolerant to changes in the amount of salt in the water. Tidal wetlands form downstream from estuaries and are
considered nurseries for birds, fish, and shellfish.
Answers
Estuaries are biomes where fresh water meets the ocean, creating a diluted saltwater environment. These areas provide habitats for various species and are influenced by salinity. Wetlands are water-saturated environments that contribute to water filtration and protect coastal lands.
Explanation:Estuaries are biomes where fresh water meets the ocean, resulting in a diluted saltwater mixture. These areas provide habitats for the offspring of crustaceans, mollusks, and fish and are influenced by salinity, which is based on the flow rate of freshwater sources. The mixing of fresh and salt water in estuaries creates challenges for plants and animals, but some are able to adapt to these conditions by tolerating salty conditions or removing salt from their roots. Wetlands, on the other hand, are environments saturated with water that help filter it and protect coastal lands from storms and floods. They consist of different types, including marshes, swamps, bogs, mudflats, and salt marshes. Wetlands are characterized by their hydrology, hydrophytic vegetation, and hydric soils.
Which processes occur in a plant embryo before it pushes out of the soil
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Which of the following is a limitation of using a model to study a natural event?
A.
The results of a model event are often much more accurate than those of the actual event.
The model and the results it generates will have no relation at all to the actual event.
The results of a model event may not be similar enough to the results of the actual event.
D.
The size and design of the model will be too similar to the actual event.
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Answer:
The results of a model event may not be similar enough to the results of the actual event.
Explanation:
Final answer:
The limitation of using a model to study a natural event is that it may not replicate the actual event closely enough, leading to erroneous predictions. Models are simplified representations with limited validity but are still essential for making predictions and organizing scientific studies.
Explanation:
One limitation of using a model to study a natural event is that the results of a model event may not be similar enough to the results of the actual event. Models are simplifications of real systems and as such, they cannot completely capture all the nuances and variables present in the actual system. While models can provide predictions quickly, a major disadvantage is that they could make erroneous predictions due to oversimplification or missing parameters.
It's important to understand that models are built around the results of scientific studies and can be used to make predictions about the system under study. However, all models have limited validity, and their reliability can vary. For instance, a physically based model or a computer-based model may have different degrees of accuracy and application because of these limitations.
Despite these limitations, models are essential tools in scientific research. They help to organize results and establish boundaries for studies, although they must be continually tested and compared with real-world observations to ensure their accuracy and relevance.
Does anyone in the third generation have cystic fibrosis
Answers
So, yes. There are people in the third generation with cystic fibrosis. Considering that each time two CF carriers have a child, the chances are: 25 percent (1 in 4) the child will have CF. 50 percent (1 in 2) the child will be a carrier but will not have CF.
yes people in the third generation have cystic fibrosis .
What is cystic fibrosis?
"Cystic fibrosis is an inherited disease characterized by the buildup of thick, sticky mucus that can damage many of the body's organs".
What is probability for third generation to have cystic fibrosis?
People with only one copy of the defective CF gene are called carriers, but they do not have the disease. Each time two CF carriers have a child, the chances are: 25 percent (1 in 4) the child will have CF.
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The structure and function of specialised cells in multicellular organisms are different. Explain why this is possible if they all possess the same genetic information.
Answers
Answer:
Differential gene expressionExplanation:
1. Cell specialization occurs due to the differential gene expression, it is the process which is responsible for the production of cells with different traits at different positions and at different time. This process changes cells from simple to more specialized in both structure as well as in function. This is all due to the differential gene expression where all cells beside containing the same gene, express different genes in different cells.
2. Cell differentiation is very important among almost all multicellular organisms. This process results in the formation of a complex organism with different types of tissues and cells from a zygote.
Why do organisms make different proteins?
I NEED THE ANSWER ASAP
Answers
Q: Why do organisms make different proteins?
You need the answer ASAP, huh? Don't worry, friend. I gotchu.
Proteins are important working molecules, or "building blocks", in all cells. They are produced in a two-step process in all organisms. DNA gets transcribed into RNA, then RNA is made into protein.
Now to get to your question, organisms make different proteins because cells come in all different shapes and sizes. Different types of cells make different types of proteins based on the jobs they have to do.
Hope this helped you out!
-Namira
All organisms have one or more chromosomes in which different fragments of DNA called genes are used to encode different proteins.
Chromosomes are linear double-helix DNA molecules consisting of two long chains of nucleotides held together by hydrogen bonds.During gene transcription, specific fragments of a chromosome called genes are used as templates to create complementary RNAs called messenger RNAs (mRNAs).Subsequently, these mRNAs are then used as templates to synthesize different proteins in the ribosomes by a process called translation. Each mRNA contains a unique linear sequence of triplets of nucleotides or codons that specify different amino acids during translation, thereby synthesizing different proteins from distinct genes.In conclusion, organisms have one or more chromosomes in which different fragments of DNA called genes are used to encode different proteins.
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Which organism would be classified as an introduced species?
A.an organism that occurred naturally in an area
B. An organism that evolved recently
C. An organism that was bright to an area by humans many centuries ago
D. An organism that used to be endangered but whose numbers recently increased
Answers
Answer:
C. An organism that was brought to an area by humans many centuries ago
Answer: C, an organism that was brought to an area by humans many centuries ago
pls mark brainiest ❤
HELP PLEASE. If coal production remained constant, coal consumption______
A: Increased
B: Stayed the same
C: Fluctuated
D: Decreased
Not a multiple choice question. Please help! 20 Points!
Answers
Answer: your answer is B.) stayed the same
Explanation:
plz mark brainliest
Answer:
temporary fix come and take a sip oh yeah e ye if you can't relate to me we gon all get through this hhhhh oh yeah yeah tell me something I don't know show me something nice to my mark she say I should get out more answer is b
Which of the statements is true
A. A hypothesis is supported by perdictions, not tested
B. A hypothesis is considered false until proven true.
C. A theory is so strong that it can never change.
D. A theory is supported by many experiments
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easy points
1
suggest what the drug longmasterol might do to the body to affect reaction time
2
describe the effect of longmasterol changes with age
3
explain why using longmasterol for a long time might cause liver damage
4
whats the name given to a pair of muscles having opposite effects
5
why do muscles work in pairs
6
describe in 3 ways a red blood cell is adapted to its function
7
why can a state of matter be compressesd
8
describe 1 way the density change when water freezes is different from the density change when the other liquids freeze
9
why do aircraft need a force from the engines to fly at a steady speed
10
what causes pressure from the water
Answers
This stimulant accelerates excitability by strengthening the synaptic connection at synaptic junctions by an increase in neurotransmitter levels.
What is stimulant?The stimulants counteract the effects of weariness on both mental and physical tasks. Therapeutic doses of stimulants can cause euphoria, prolonged wakefulness, and appetite loss.
The medication is a stimulant that boosts synaptic connections by raising the quantity of neurotransmitters at synaptic junctions, which improves the rate of excitability.
This quickens the aging process. resulting in early aging. Long term, it may have an impact on cardiovascular system overall and cardiac performance.
By preventing blood flow to the liver over time, this could harm the liver. Additionally, it might have an inhibiting influence on the liver's detoxifying processes. This results in liver failure.
Muscles that oppose one another in action are said to be antagonistic. When one relaxes, the other contracts. In order to move, bones must move in unison.
The bone is dragged as one contracts and the other relaxes, shifting the bone's position to enable movement. Keep in mind that a muscle cell typically pulls in one direction.
Red blood cells are nucleus-free, have a bi-concave shape that allows them to fit through tiny capillaries to reach tissues, and have a vast surface area for delivering oxygen molecules.
Only a state of substance that is gaseous may be compressed. Because of the strong intermolecular interactions and the tightly packed molecules of solids, it cannot be squeezed at the solid state.
The way that ice affects density the density of ice is lower than that of water because of the lattice structure of the water molecules in ice.
The force that pulls water through the mains and into the pipes might lead to aircraft. The force per unit area that raises water to a height of 10 meters is equivalent to 1 bar.
To overcome the aerodynamic deterrent, there is pressure to provide a forward force. The thrust from the propeller engine ensures a constant speed that is high enough to overcome the drag.
Thus, this is the basic answers for the given scenario.
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Which correctly distinguishes between a pine tree and an apple tree?
The pine tree bears flowers, the apple tree does not have any flowers,
The pine tree has unprotected seeds, the apple tree has seeds in fruit.
The pine tree is vascular, the apple tree is a seedless, nonvascular plant.
The pine tree thrives in warm climates, the apple tree thrives in cold climates,
Answers
What does Darwin's theory of evolution explain
about the natural world?
Answers
Darwins theory of evolution explains how modern organisms evolved over long periods of time through descent from common ancestors. Darwin meant that different, yet ecologically similar, animal species inhabited separate, but ecologically similar, habitats around the globe.
Darwin's theory of evolution by natural selection explains that species evolve over time due to inherited beneficial traits increasing in frequency among populations, this is based on his critical observations and the principle of common ancestry.
Charles Darwin's theory of evolution has greatly enhanced our understanding of the natural world. It explains the process of evolution, which states that all living organisms are descended from earlier forms of life, and the mechanism of natural selection, which describes how species change over time. Natural selection posits that organisms with beneficial traits are more likely to produce offspring, leading to the prevalence of these traits in future generations. Darwin's extensive observations, particularly on the Galápagos Islands, were fundamental to the development of his theory. These observations, alongside his understanding of common ancestry, allowed Darwin to clarify why there is such vast biodiversity on Earth and how species can adapt to environmental changes.
The theory of evolution by natural selection answers fundamental questions in all branches of biology, from genetics to ecology, and has broad applications in fields such as agriculture, medicine, and conservation biology. It implies that present-day species evolved from common ancestors, and it explains the differences and similarities observed among organisms due to environmental pressures and changes.
What is common between the environmental changes of ice ages and global warming?
They influence global temperatures in the same way.
They have the same causes.
They can lead to extinction.
They disrupt the same species in the same ways.
Answers
Answer:
c
Explanation:
Answer:
c
Explanation:
i just took the test
How do organisms in a food web interact?
Answers
longterm partners with a close association. Or, of course, they can do what we so often see in nature programs: one of them can eat the other—chomp! That is, they can form one of the links in a food chain.
what about water gives it all the special properties?
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Water's special properties arise primarily from its molecular structure and the hydrogen bonding between its molecules.
Polarity: Water molecules are polar, meaning they have a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom. This polarity allows water molecules to form hydrogen bonds with each other and with other polar substances.
Hydrogen Bonding: The hydrogen bonds between water molecules are responsible for many of water's unique properties. Each water molecule can form up to four hydrogen bonds with neighboring molecules, creating a strong cohesive force.
Cohesion and Adhesion: Cohesion refers to water molecules sticking to each other, which is due to hydrogen bonding. This results in high surface tension, allowing insects to walk on water and water droplets to form. Adhesion is the tendency of water molecules to stick to other substances, which helps water climb up plant roots and stems in a process called capillary action.
onion contain cells just like humans do true or false
Answers
Answer:
True
Explanation:
All living things contain cells. Both humans and onions are living things.
Answer:
True
Explanation:
All living things contain cells, even plants like onions. Interestingly, we share many of the same cells with onions.
Answer the question. Show all your work.
3. In guinea pigs, black (B) is dominant to white (b). If a homozygous black is mated with a white guinea pig, predict the genotypic and phenotypic ratios for the F1 and F2 generations.
Answers
Answer:
F1- 100% Bb and 100% black guinea pigs
F2- 50% Bb, 25% BB, 25% bb or 75% black guinea pigs and 25% white guinea pig
Crossing a homozygous black guinea pig (BB) with a white guinea pig (bb) results in all F1 offspring being heterozygous black (Bb). The F2 generation from crossing two Bb individuals will have a genotypic ratio of 1 BB to 2 Bb to 1 bb and a phenotypic ratio of 3 black to 1 white.
When a homozygous black guinea pig with the genotype BB is mated with a white guinea pig with the genotype bb, the F1 generation will comprise entirely of Bb offspring because each parent contributes one allele to their offspring. Since black (B) is dominant to white (b), all F1 offspring will have a black phenotype.
In the F2 generation resulting from a cross between two Bb heterozygotes, we can use a Punnett square to predict the genotypic and phenotypic ratios. The Punnett square for this cross is Bb x Bb. You will find that genotypically there will be a 1:2:1 ratio (1 BB : 2 Bb : 1 bb), and phenotypically there will be a 3:1 ratio, with approximately 75% of the offspring displaying the black phenotype and 25% the white phenotype.
pls help me im dead
Which structure of a dolphin has the same function as the gills of a fish?
Question 2 options:
fin
heart
lung
mouth
Answers
Answer:
Lung
Explanation:
The fish use gills to breathe and get oxygen from, while dolphins (being mammals) use lungs to do this same function.
The structure of a dolphin that has the same function as the gills of a fish is lungs. The correct option is C.
What are gills?On the side of fish heads, gills are branching organs with a huge number of capillaries, which are very small blood veins.
Water flows over the fish's gills when it opens its mouth, allowing dissolved oxygen in the water to be taken up by the blood in the capillaries.
Many aquatic species use their gills as respiratory organs to take in dissolved oxygen from the water and expel carbon dioxide.
Several species, like hermit crabs, have modified their gills to enable breathing on land as long as the environment is kept moist.
Dolphins use their lungs to breathe air, as opposed to fish, who do it through their gills.
Thus, the correct option is C.
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In 1883, a catastrophic event caused climate change, a massive tidal wave, and violently red sunsets. Which event below would be the most likely to have caused the listed effects in 1883?
A. a volcanic eruption
B. a typhoon
C. a hurricane
D. an earthquake
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at what phase of cell division or cell do the nuclear and cytoplasmic contents duplicate?
Answers
Answer:The cell cycle has two major phases: interphase and the mitotic phase. During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated and the cell divides.
Explanation:
Is a shark bilateral or radial symmetry
Answers
means they have symmetry across one plane (known as the sagittal
plane, and directly down the centre of their body), which means one
Which of the following statements is true?
a
Each amino acid in a protein is coded for by three bases in the DNA.
b
Each gene codes for three proteins.
c
Each triplet has many different meanings.
d
It takes three genes to code for one protein.
e
Each DNA base codes for three amino acids.
Answers
Answer: I would say E
Explanation:
Is it multiple choice? If so then these are the answers, I think...
A. Each amino acid in a protein is coded for by three bases in the DNA.
B. Each gene codes for three proteins.
C. Each triplet has many different meanings.
Please, someone, help me!
Answers
Answer: There is a download application/pdf and no picture
Explanation:
Which of the following gases is NOT a significant component of
the planet's atmosphere?
a Oxygen
b Nitrogen
C Neon
d None of the above
Answers
Option C. Neon is the gas among the options provided that is not a significant component of Earth's atmosphere, unlike Nitrogen and Oxygen, which are the two most abundant gases.
The gas that is not a significant component of the Earth's atmosphere among the choices provided is Neon (c). While Nitrogen and Oxygen are the two most abundant gases in the atmosphere, Neon is considered a minor component. Nitrogen makes up approximately 78.1% of the atmosphere, and Oxygen is about 21%. In contrast, Neon is much less abundant.
Regarding the other questions mentioned, Oxygen (d) is not considered a significant contributor to global warming as opposed to Carbon dioxide, Methane, and Nitric oxide. In terms of human body composition, Hydrogen is one of the most abundant elements. Moreover, among the compounds listed, Water vapor (H₂O), Carbon dioxide (CO₂), and Chlorofluorocarbons (CFCs) are known greenhouse gases.
Stem cells can divide indefinitely and can produce different types of cells, as shown in the model here. A student wants to revise the model to accurately depict how stem cell division and differentiation allows for specialized cells to develop while maintaining the ability for the stem cell to give rise to new cells. What revision to the model best depicts stem cell division and differentiation? A) The model should show apoptosis of the white blood cells that are unnecessary to the immune system. B) The model should show the original stem cell dividing to become a differentiated cell and another stem cell. C) The model should show the process of meiosis before cell differentiation since specialized cells are haploid. D) The model should show the reversion of the white blood cell back into a stem cell so that future differentiation can occur.
Answers
Answer:
the answer is b.The model should show the original stem cell dividing to become a differentiated cell and another stem cell.
Explanation:
Answer:
pretty sure its B
Pls help me w this last question
Answers
Answer:
Chemical reactions convert reactants into products. In nonliving systems, the presence of a(n) catalyst allows the reaction to proceed very quickly and have a lower activation energy. In living systems, this functions is carried out by proteins called enzymes.