Answers
Related Questions
"How does Salva survive in A Long Walk to Water? What factors or traits allow him to survive when he otherwise would have died?"
Answers
Answer:
A. If he hadn't relied on adults or been resourceful, Salva Dut would never have survived in A Long Walk to Water. Relying on adults and being resourceful were the two factors that made it possible for Salva to survive. A Long Walk to Water by Linda Sue Park was a story of survival and success.
Salva had to leave his village because the war struck. He now must walk all day, every day to find safety. The environment challenges him by making him dehydrated and both mentally and physically hurt. “Uncle cautioned him to make the water in his gourd last as long as possible.
Explanation:
Scientists may collect data by
Select one:
O a. doing experiments.
O b. making observations.
O c. taking measurements.
O d. all of these.
Answers
Answer:
d. all of these
Explanation:
because of course scientists needs
experiments, observation and as well
as object measurements while inventing
some new objects.
Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answers
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
How does your body get rid of the carbon dioxide produced by cellular
respiration? *
a. through your intestines
b. through your lungs
c. through your sweat
d. through your urine
Answers
Answer:
B
Explanation:
You can automatically eliminate C and D.
The primary function of your intestines is to digest food.
Your lungs transport oxygen and carbon dioxide.
Through your sweat and through your urine body get rid of the carbon dioxide produced by cellular respiration.
What is Cellular respiration?
Through the process of cellular respiration, organisms mix oxygen with food molecules, directing the chemical energy contained in these substances toward life-sustaining processes while excreting carbon dioxide and water as waste.
Foods are broken down by organisms that do not require oxygen in a process known as fermentation. (For more in-depth discussions of various cellular respiration topics, see tricarboxylic acid cycle and metabolism.)
Adenosine triphosphate (ATP), an energy-rich compound that absorbs the chemical energy obtained from the breakdown of food molecules and releases it to power other cellular processes, is one goal of the degradation of foodstuffs.
Therefore, Through your sweat and through your urine body get rid of the carbon dioxide produced by cellular respiration.
To learn more about Cellular respiration, refer to the link:
https://brainly.com/question/29760658
#SPJ2
which product is made from a renewable resource?
A. a penny made with copper?
B. computer chips made from silicon?
C. a pie made with blueberries?
D. earrings made from silver?
Answers
Answer:
C. A pie made with blueberries
Explanation:
Blueberries can be grown naturally, so they are a renewable resource.
Blueberries are renewable resources. Hence, option C is correct.
What are renewable resources?Renewable resources are those natural resources that continue to exist even after their consumption. They are also known as flow resources.
Renewable resources include plants, biomass, ocean currents, energy, wind, solar energy, tides, waves, etc. All these things will continue to exist even after their consumption. They can be used repeatedly and do not run out.
Advantages of renewable resources:
They are cheap.They are easily available.They are eco-friendly.They are clean and efficient.Copper, silicon, and silvers are minerals and non-renewable resources, and blueberries are plant products and hence, they are renewable resources. Therefore, option C is correct.
Learn more about renewable resources, here:
https://brainly.com/question/19604560
#SPJ2
4. What would happen to your body if a vaccination contained a healthy, living
antigen (instead of a dead or weakened antigen)?
Answers
Answer:
This is known as adaptive immunity. Vaccines utilise this adaptive immunity and memory to expose the body to the antigen without causing disease, so that when then live pathogen infects the body, the response is rapid and the pathogen is prevented from causing disease.
Explanation:
An investigation involving osmosis and plant cells was performed by a group of students. Sweet potatoes were used as
the source of plant cells in the experiment. A sweet potato was diced into evenly sized andshaped cubes and placed
in beakers containing various glucose concentrations. The experimental setup is shown in the table here.
Which statements accurately predict the beaker in which water will enter the cells at a greater rate, causing an
Increase in mass for the sweet potato cells?
A)
Beaker 1
B)
Beaker 3
C) beaker 4
Answers
Answer:
A
Explanation:
Water will enter and leave the cells at the same rate via osmosis
The correct option is (A) Beaker 1 in which water will enter the cells at a greater rate, causing an increase in mass for the sweet potato cells.
What is Osmosis?Osmosis refers to a process in which the water or solvent diffuse across a semipermeable membrane (here cell membrane) from the area of high solute (here glucose) concentration to low solute concentration. The concentration of glucose in the water of beaker 1 is 1.5M which is highest as compared to other beakers.
The concentration of glucose solution in beaker 1 is hypertonic to the concentration of glucose in the cell which makes the water to move inside the cell via osmosis. Movement of water inside the cell results in increase in mass for the (sweet potato) cells.
Thus, the water will enter the cells at a greater rate in the beaker 1 because the glucose concentration is highest in the beaker 1 corresponding to its cell glucose concentration.
Learn more about osmosis, here:
https://brainly.com/question/1799974
#SPJ5
List five difference between parasitism and saprophytism
Answers
Heterotrophic mode of nutrition
This type of nutrition can be categorized into parasitic mode, saprophytic mode and symbiotic mode of nutrition.
Parasitic mode:
In parasitic mode of nutrition, plants depend on other live plants or animals for their nourishment. Such plants are called as parasites and the ones on which parasites depend are called as hosts.
The insectivorous mode of nutrition is observed in plants like pitcher plant and the Venus fly trap. They purely depend on other insects and small animals for their nutrition.
Cuscuta is a parasitic plant which develops special roots called haustoria. Haustoria penetrate deep into host plant tissues and just absorb the nutrients from them.
Saprophytic mode:
The plants which exhibit saprotrophic mode of nutrition are called as saprotrophs. Saprotrophs are the plants that obtain their nutrition from dead and decaying organic matter. Saprotrophs secrete digestive juices onto dead and decaying matter to dissolve it and then absorb nutrients from it.
Examples of parasitic mode of nutrition are:
1.Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans. They get food by eating the host's partly digested food, depriving the host of nutrients.
2.Fleas harm their hosts, such as dogs, by biting their skin, sucking their blood, and causing them to itch.
3. Barnacles, which live on the bodies of whales, do not seriously harm their hosts, but they do itchi g bcoz of barnacles.
Some examples of plants having saprophytic nutrition are as follows:
Corallorhiza trifida
Dipodium punctatum
Galeola septentrionalis
Monotropa uniflora
Neottia nidus-avis
So, like I wrote above, the mode of nutrition in which an organism obtains nutrients from dead and decaying organic matter is called saprophytic nutrition. Example - Rhizopus (bread mould), Mucor (pin mould), Yeast, Agaricus (mushroom) .
Can someone help, u have to match defintions with pictures
Answers
Answer: The picture at row 1, column 1 goes with the definition in row 2 column 4.
The definition in row 1 column 2 goes with the picture in row 4 column 2
the definition in row 2 column 1 goes with the picture in row 2 column 2
Explanation: Thats the best I could do with the image
I hope this works for you
Erythrocytes live for a maximum of.......days whereas platelets live for ....... days
Answers
Answer:
\(120 \: days;10 \: days.\)
Explanation:
Thanks!!!!!
you fill a cuvette with a solution of enzyme, substrate, and dye that changes color as the reaction occurs. You put in a spectrophotometer and record the absorbance at several time points. The absorbance increases at first, then starts to level off, staying almost exactly the same at each time point. Why did the absorbance increase at the beginning and why did it level off over time?
Answers
Answer:
the change in absorbance reflects the reaction rate. As the reaction completes, its rate slows, so the absorbance levels off.
Explanation:
A spectrophotometer measures the amount of light of a particular color passing through the sample. The changing color of the dye will change the value read by the spectrophotometer..
Apparently, the absorbance increased as the reaction progressed. When the reaction was almost complete, the absorbance increase slowed or stopped.
How would you go about isolating your pure culture?
Answers
Explanation:
Simpler methods for isolation of a pure culture include: (i) spread plating on solid agar medium with a glass spreader and (ii) streak plating with a loop. The purpose of spread plating and streak plating is to isolate individual bacterial cells (colony-forming units) on a nutrient medium.
why are mutations considered important in evolution
Answers
Mutations are considered important in evolution because they are the ultimate source of genetic diversity.
Mutations are alterations in the sequence of an organism's DNA, caused by radiation or toxins in the environment. They can also form spontaneously during DNA replication.Mutations can have a variety of impacts. These are frequently dangerous or have little or no impact. However, changes in DNA sequence can occasionally be helpful to the organism.Beneficial mutations that offer a survival benefit or reproductive success are more likely to be passed on to subsequent generations, increasing their frequency in the population over time. This accumulation of favorable mutations is a driving factor in the process of evolution.Without mutations, there would be no supply of new genetic information, and evolution would be greatly hampered.
Answer:
Mutations are one of the fundamental forces of evolution because they fuel the variability in populations and thus enable evolutionary change.
why do we need to broaden our understanding of biodiversity
Answers
Answer:
Biodiversity is the variety of different types of organisms in the world or a particular area or ecosystem which is found to be very desirable and significant. Different types of plants, animals, and other organisms all are included in biodiversity and each has its own role.
Biodiversity of a biosphere or a region affects all organisms found in it from microbes to large plants and animals. Biodiversity gives an idea about a biosphere as it helps in the sustainability of all life forms if there are higher species variety.
Human beings need to broaden the understanding and knowledge of biodiversity as it is one of the major aspects that affect life all organisms present on earth.
What is an allele? (1 point)
O a trait that can be masked
O a unit of heredity that is transferred from parent to offspring
O a variant form of a gene a trait that appears in an offspring if one of the parents contributes it
Answers
Answer:
it is A i just took the test
Explanation:
Cows, buffaloes and wildebeest are closely related enough that the same disease can harm all of them true or false
Answers
Should be the right answer because we can see mutations in humans can kill some and do nothing to others
Food webs in ecosystems become very complicated very fast. Explain why.
Answers
Answer:
Food webs are more complex than food chains, yet equally as useful in understanding the processes of ecological communities. A food web shows the flow of nutrients between different types of organisms which can help us understand the energy transfer as described before.
Explanation:
Food webs in an ecosystem involves the combination of two or more food
chains. This involves all the relationship an organism has with the others.
This makes the food web complex.
Food webs have different types of organisms present which ranges from
plants which are regarded as the primary producers to animals such as Lion
which can be regarded as a Secondary/tertiary consumer in the ecosystem.
The occasional change in the geography and seasons in the ecosystem
also makes it very complex as some animals exhibit different traits when
subjected to certain conditions. This makes analysis of energy flow and relationship sketchy to determine.
Read more on https://brainly.com/question/22011808
Which step measures the concentration of the reaction product?
A. Spectrophotometer
reading
B. Centrifugation
C. Addition of TCA
D. All of the options are correct
Answers
Centrifugation is a mechanical process which involves the use of the centrifugal force to separate particles from a solution according to their size, shape, density, medium viscosity and rotor speed.
Trichloroacetic acid (TCA) precipitation of proteins is commonly used to concentrate protein samples or remove contaminants, including salts and detergents, prior to downstream applications such as SDS-PAGE or 2D-gels. TCA precipitation denatures the protein, so it should not be used if the protein must remain in its folded state (e.g., if you want to measure a biochemical activity of the protein).
Determining the protein concentration in your sample is an important step in any laboratory workflow that involves protein extraction and/or analysis. Knowing how much protein you have can help you compare results from one protein to another and from one experiment to the next.
What is the BEST explanation of why engineering crops to be more tolerant of weedkillers enables farmers to stop or reduce tillage?
A. Weeds can be killed with herbicides instead of through tilling.
B. The crops and weeds evolve to coexist without reducing yields.
C. Crops can grow better in weed-infested soil that is untilled.
D. Tilling becomes unnecessary once herbicides remove the weeds.
Answers
The BEST explanation of why engineering crops to be more tolerant of weedkillers enables farmers to stop or reduce tillage is that weeds can be killed with herbicides instead of through tilling.
The correct option is A.
What is tillage?Tillage is the process of mechanically preparing the soil by turning it over, which can be time-consuming, labor-intensive, and can disturb the soil structure.
By relying on herbicides instead, farmers can save time, reduce labor costs, and minimize soil disruption. This practice is often referred to as chemical weed control or chemical tillage and is a common technique used in modern agricultural practices.
Learn more about tillage at: https://brainly.com/question/1315410
#SPJ1
explain the inheritance of colour blindness in man
Answers
\({\huge{\bold{\hookrightarrow{\blue{\mathfrak{Answer}}}}}}\)
______________________________________
Color blindness is an X-linked recessive trait, meaning that the gene for color blindness is located on the X chromosome. Because males have only one X chromosome, if they inherit the color blindness gene from their mother, they will be colorblind. Females need to inherit two copies of the gene to be colorblind, one from each parent. If they inherit only one copy, they will be carriers of the trait but will not be colorblind themselves.
Color blindness is inherited through the X chromosome, making it more common in males due to their XY genetic makeup.
Color blindness, also known as color vision deficiency, is typically an inherited condition that affects the perception of colors. The inheritance of color blindness in humans is linked to the X chromosome, making it more common in males.The genes responsible for color vision are located on the X chromosome. Since males have one X chromosome and one Y chromosome, while females have two X chromosomes, the inheritance pattern differs between the sexes.In most cases, color blindness is caused by a recessive gene. If a male inherits a single copy of the recessive gene from his mother, he will have a higher likelihood of being color blind because he lacks a second X chromosome to counteract the effect of the gene. Females, on the other hand, require two copies of the recessive gene (one from each parent) to develop color blindness.Therefore, males are more likely to be affected by color blindness, while females tend to be carriers of the gene without experiencing color vision deficiencies themselves.In conclusion, color blindness is inherited in a manner that is influenced by the presence of the recessive gene on the X chromosome, leading to a higher prevalence among males.For more questions on Color blindness
https://brainly.com/question/1601607
#SPJ8
Invasive species in Texas have
Answers
Zebra Mussels. Zebra mussels have become the poster child for invasive species in Texas
Feral Hogs
Nutria
Red Fire Ants
Giant Salvinia
Africanized Bees
Black Tiger Shrimp
Asian Carp
Taste buds are located within the circumvallate and fungiform papillae. A) TrueB) False
Answers
There are four types of tongue papillae: (1) filiform, which is thin and wired shape and no taste buds, (2) fungiform, which is mushroom-shaped near the middle and with taste buds, (3) foliate, which is leaf-shaped near the sides and with taste buds, and (4) circumvallate papillae, which is whorls at the sides and with taste buds.
ANSWER: TRUE. There are taste buds in the fungiform and circumvallate papillae.
what type of cell is unicellular?
Answers
Answer:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.
Explanation:hope this helped
Answer: well there isn't really a unicellular cell but theres a unicellular organism
Explanation:
a unicellular organism is a organism that only has one cell
I need help! Pls help!!!
Answers
(iii) Enzymes P, Q and R (choose any one)
P - pepsin / protease
Q - amylase / carbohydrase
R - lipase / trypsin / protease / amylase
(c) There are many ways in which different types of enzymes are using in preparing baby foods such as the amylase breaks down the starch and the starch breaks down to maltose or glucose. The protease breaks down protein and the protein breaks down into amino acids. The lipase breaks down fats and then the fats break down to gylcerol.
Hope it's help you.If it is right
Which of the following is an environmental cost of commercial agriculture? A. Overconsumption of water B. Efficient milk production C. Crop rotation D. Primary food crops
Answers
Answer: A. overconsumption of water
Explanation:
Every other answer is a a positive
Which action is an example of using scientific thinking to make inferences?
A. Researching existing knowledge about the natural world
B. Using tools or measurements to collect data
C. Asking questions and being curious about the natural world
OD. Analyzing data and observations to form conclusions
SUBMIT
Answers
Option D: An example of using scientific thinking to make inferences is analyzing data and observations to form conclusions.
Scientific thinking is a step included in a scientific investigation. Scientific investigation is a plan to observe different aspects of nature, ask questions, and draw possible answers. Steps to scientific investigation involve making observations, asking a question, forming hypotheses, testing hypotheses, and concluding. The last and most important step is communicating the conclusions with others. This allows others to test what was produced in a scientific investigation and whether the claims are true or not.
Conclusions are formed on the basis of data and observations made in a research. Any hypothesis that a scientist claims needs to provide evidence. None of the evidence can be true wholly. That's why, conclusions are made on the basis of their studies and evidence for those studies. Another scientist may find another result that may not support the previous hypotheses and thus the hypothesis may be proved wrong. The more evidences for a hypotheses are provided, the more chances the conclusion made was true.
To know more about scientific investigation, refer to the following link:
https://brainly.com/question/1700964
#SPJ4
Which indicates a heterozygous genotype for smooth pods?
A. ss
B. SS
C. Ss
Answers
Answer:
C. Ss
Explanation:
One dominant allele (S) and one recessive allele (s) indicates a heterozygous trait.
Which of the following influences the amount of ozone pollution near Earth's surface?
O An area's weather patterns
O Nearby water resources
O Volcanic eruptions
O Plants undergoing photosynthesis
Answers
All the four options can lead to ozone pollution near the earth's surface.
Ozone Pollution- Increased wheezing, coughing, and chest tightness are brought on by ozone pollution, which results from hydrocarbon and nitrogen oxide emissions from cars and other sources mixed with sunshine.
Plants undergoing photosynthesis- Significant producer of VOCs (Volatile Organic Compounds) is woody vegetation. Before they react to generate ozone in the atmosphere, where it can linger for several weeks, NOx and VOCs can be transported over great distances by local weather patterns.Volcanic eruptions- Volcanoes probably generate enough bromine to deplete the ozone layer locally and alter the chemistry of the stratosphere. According to estimates, 1 to 5 percent of ozone damage is thought to be caused by volcanoes, 15 to 20 percent by other natural sources, and a staggering 75 to 85 percent by human activity.Water resources- From farms, factories, and towns, streams and rivers transport pollutants like chemicals, fertilizers, and heavy metals into our bays and estuaries, where they are then transported out to sea. The wind also brings in marine waste, particularly plastic, as does water from storm drains and sewage systems.Weather Patterns- As a result of global warming, there will be an increase in more extreme weather, including heat waves, extreme rainfall events, and other phenomena. Because the chemical reactions that produce ozone in the atmosphere take place more often in hot temperatures, heat waves increase the amount of ground-level ozone pollution.To learn more about ozone pollution- https://brainly.com/question/14154063
#SPJ9
Answer:
An area's weather patterns
Explanation:
the teacher told me
Examination of the amino acid composition of a newly isolated protein indicates the presence of 10 lysines, 5 arginines, and 4 methionines. When the protein is treated with cyanogen bromide, four peptides are obtained. When it is treated with trypsin, 16 peptides are obtained. What do these results suggest regarding the sequence of the protein
Answers
Answer:
The protein has a lysine or arginine at it's C-terminal end.
Explanation:
Given isolated protein indicates the presence of 10 lysines, 5 arginines, and 4 methionines. So, sequence of the protein . These results indicate that the sequence of proteins contains lysine or arginine at the end of the C-terminal. Because we have 15 sites that can be separated from trypsin and so it only causes 16 peptides.(Psychology)
a chemoreceptor would allow you to
A.see something
B. Detect you friends features
C. Detect a smell
D. Analyze you environment
Answers
a chemoreceptor would allow you to detect a smell .
A person with a low number of white blood cells could have difficulty in fighting infections and A decrease in the number of lymphoid stem cells could result in a decrease in red blood cell.
What is nucleotide?It is the sub units and buIlding blocks of DNA. It is made up of a five-sided sugar, phosphate group and then a nitrogen base.
These groups make the backbone of the DNA helix. If you look at a DNA helix, they make the side of the ladder or the side portion. They connect to a nitrogen base which make the steps of the ladder. The type of sugar that is used in a DNA helix is called deoxyribose.
Nitrogen bases are the molecules that make up the steps of the ladders. There are four different nitrogen bases, namely; Guanine, Thymine,Adenine and Cytosine.
Pyrimidines are compounds that make a single 6-sided ring. Examples of pyrimidines are Cytosine and Thymine. Purines on the other hand make 5-sided and 6-sided rings.
Therefore, A person with a low number of white blood cells could have difficulty in fighting infections and A decrease in the number of lymphoid stem cells could result in a decrease in red blood cell.
Learn more about white blood cells on:
https://brainly.com/question/19202269
#SPJ5