Answer:
increasing water stress
Explanation:
The foliage on roadside vegetation is damaged when salted water sprays up from the pavement by passing vehicles. Salt-laden water can also percolate down through the soil profile, coming into contact with soil particles, soil microbes, and plant roots. Salt injures vegetation by: Increasing water stress
como afecta este tipo de contaminacion a tu salud ? (el humo de carro)
Answer:
El aire contaminado no solo afecta al sistema respiratorio, sino que repercute en muchos más aspectos de nuestra salud. Pulmones. Perjudican su revestimiento y provocan tos, sibilancias, disnea y dificultades para respirar, sobre todo en personas vulnerables. Infartos.
Explanation:
hope this helps novio<3
In this graph, what are the independent and dependent variables?
Answer:
Wing beats are independent and the mass of hummingbird are dependent.
Explanation:
Because the y-intersept is independent and the x-intersept is dependent.
Brainliest please!
The cell membrane's function is to..
O allow nutrients in, and send wastes out of the cell
O to control the amount of water that enters the cell
O to block all nutrients from entering the cell
Answer:
The first bullet point is correct
Explanation:
The cell membrane controls what comes in and out of the cell, it needs minerals so would not block them completely, and water does not enter cells so it is clearly the first one.
which source of calories causes the body to expend the most energy during digestion?
The consumption of energy during digestion is known as the thermic effect of food.
Consuming food is how we get the energy needed to sustain the basic functions of our organisms. Digesting this food, however, also takes up energy. In fact, about 10% of the energy we expend daily is allocated towards the digestion and storage of food and nutrients. This is known as the thermic effect of food.
On average, the food with the highest thermic effect is that of vegetables and fruit with high water compositions. This, however, falls a bit out of the scope of the question given that these foods are often very low in calories. The food that is high in calories and has a high thermic effect is protein. On average, proteins consume 20-30% more energy to digest than other sources of calories.
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which structure mediates the attachment of spores to a surface on which to grow?
Answer:
holdfast
Explanation:
Water is a polar molecule because
Answer:
Water is a polar molecule because of its unequal sharing of electrons.
Answer:
The reason why Water is considered a polar molecule is because of Unequal sharing of electrons.
Explanation:
This makes the oxygen end of the molecule slightly negative. Since the electrons are not near the hydrogen end as much, that end is slightly positive. When a covalent bonded molecule has more electrons in one area than another, it is called a polar molecule.
This table shows the codons found in messenger RNA. Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Phe-Ser-Gln?
a. UUC-UCU-CAA
b. AAG-AGA-GTT
c. TTC-TCT-CAA
d. AAG-AGA-GUU
please help!
The Nucleotide sequence for Phe-Ser-Gln is UUC-UCU-CAA. The nucleic acid sequence is also known as the main structure.
What is nucleotide sequence?The order of the nucleotides in a DNA or RNA molecule is denoted by a string of letters called a nucleic acid sequence (GACU or GACT). Sequences are often presented according to the convention from the 5' end to the 3' end.
The covalent structure of the entire molecule can be defined by specifying the sequence because nucleic acids are typically linear (unbranched) polymers. The nucleic acid sequence is also known as the main structure because of this.
Therefore, The Nucleotide sequence for Phe-Ser-Gln is UUC-UCU-CAA. The nucleic acid sequence is also known as the main structure.
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Which statement can be attributed to the discoveries made by Schwann?
A.All cells come from other cells.
B.All animals are made of cells.
C.All plants are made of cells.
D.
The smallest unit of life is the cell
The statement that can be attributed to the discoveries made by Schwann is as follows:
The smallest unit of life is the cell.Thus, the correct option for this question is D.
What is the contribution of T. Schwann?The major contribution of Theodore Schwann is that he proposed the Cell theory in 1839. This theory consists of three parts. They are as follows:
All living organisms whether plants or animals are made up of cells.A cell is the smallest unit of life for all living organisms. A Cell is the basic structural and functional unit of life.Apart from this, Cell theory was further refined by German Biologist Rudolf Virchow in 1855. He states that "all cells are arising from pre-existing cells". Option one is given by R. Virchow.
While all animals and plants are made up of cells is the second point of the cell theory. So, the correct option with respect to the question is that a cell is the smallest unit of life.
Therefore, the correct option for this question is D.
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Design a controlled experiment to determine the effect of hot, dry air on head lice. In your experimental design, be sure to:
• state the hypothesis to be tested in the experiment [1]
• state one way the control group will be treated differently from the experimental group [1]
• state one result of the experiment that would support the hypothesis [1]
An experiment is carried out to answer a question. The hypothesis predicts what is expected to occur. Experimental and control groups are compared to analyze the results, supporting or not the hypothesis.
-----------------------------------------
BACKGROUND
When people are infested with head lice, it is recommended to wash their cloth and dry it with hot air over 53 or 54ºC for 5-30 minutes.
Head lice and eggs seem to die when exposed to those conditions by getting dehydrated.
SITUATION
We will assume that we work in a primary school and that students from the 3rth grade are being affected by this parasite.
We want to know if applying hot air to these students before entering the class will make a difference and help to control this problem.
So, we will propose an experiment to answer this question.
HYPOTHESIS
A hypothesis is a conjecture. A researcher hypothesizes to predict what is going on or what is expected to occur. The hypothesis is a claim of how it works a relation between two or more variables. Usually, it is written in the present time.
Hypothesis ⇒ Applying hot air to students' heads kills the head lice that students are carrying.
To evaluate the effect of hot air, we need to keep control of as many other variables as possible.
To do so, we asked students' families not to use other treatments on students' heads and to bathe them daily.
In this way, we were sure that all students
were equally affected by the parasite, took showers every day, and neither was using any other product that could affect the results.Our population was the 3rth grade students ⇒ 64 children ⇒ 30 girls + 34 boys.
Before the experiment, we separated the 3rth grade into two groups.
Group A ⇒ 32 students ⇒ 15 girls + 17 boys ⇒ Experimental groupGroup B ⇒ 32 students ⇒ 15 girls + 17 boys ⇒ Control group
→ Treatment
Each student from group A received hot air every day for one week before entering the class.
Hot air was 53ºC and was applied for 5 minutes.
→ Control
Each student from group B did not receive the treatment for one week before entering the class.
CONTROL GROUP
The control group is used to identify any other factors influencing the results obtained in the study, apart from the modified variables of the treatment.
Individuals of the control group are selected from the same population as the treatment group.
*** These two groups are identical in all aspects except for the independent variable, which changes in the treatment group but remains constant in the control group. ***
The control group is Group B. The only difference between the control and the experimental group is that the first one did not receive the treatment. Every other aspect was equal for both groups.
The only way the control group was treated differently from the experimental group was that the control group did not received the treatment, while the experimental group did.
RESULTS
After one week, groups were compared to see if the hot air was effective in killing head lice.
When comparing the control and the experimental group, we could see that students from group A were free of parasites.
Students from group B were still affected by the head lice.
CONCLUSION
The results support the hypothesis. Hot air turned to be a great treatment for lice control.
-------------------------------------------
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help me, please i really need help
Answer:
a. graduated cylinder
b.ruler
c. thermometer
d. triple balance beam
4. they allow more accurate results
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please crown me brainliest
I need help with this
Answer:
could you please post a bigger picture of that so i can see the questions
Explanation:
What are some of the reasons that cell division is important to organisms? (Choose all that apply)
1. quick and uncontrollable cell division of cancer
2. growth into an adult stage
3. regeneration of new body parts
4. repair of dead or damaged cells
Answer:
2. growth into an adult stage
3. regeneration of new body parts
4. repair of dead or damaged cells
What type of organism is a crab?
Answer:
Benthos
Explanation:
because they live on the ocean floor
Answer:
Crabs are Benthos.
Explanation:
Crabs belong to the subphylum CrustaceanCrabs are invertebratesCrabs are neither amphibians nor reptilesLife in the benthos region is organized by size. Benthic organisms live on or just beneath the bottom of the lagoon or in the intertidal zoneCrabs live on ocean floor.I really need help with this. Thank you.
Answer:
looks like two compounds so mixture
defense cells in blood are called white blood cells or:
what cell structure is made of a bilayer of phospholipids and proteins
Answer:
the Plasma Membrane
Explanation:
Like all other cellular membranes, the plasma membrane consists of both lipids and proteins. The fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments.
The pencil has a mass of 5.2g and a volume of 3cm^3. What is its density?(Show formula, work, and units)
how tall are penguins? explain in two sentences how tall they are and how much they weigh
Answer:
Emperor penguin: 1.1 – 1.3 m
Little penguin: 30 – 35 cm
Galapagos penguin: 49 – 53 cm
Explanation:
The sternum is ________________to the nose.
Answer:
The sternum is to your chest what the nasal bones are to the nose.
Explanation:
Explanation:
Are you referring to the position? If so, it would be inferior to the nose.
an animal, that has gained new genetic information from the acquisition of foreign dna, is called a
Answer: Chimera
Explanation:
A genetic chimerism or chimera is a single organism composed of cells with more than one distinct genotype
True or false? All genetically modified foods are 100% guaranteed safe.
Answer:
no
Explanation:
being 100% sure is technically impossible, so it might be 100% safe for a month, but after that is unknown
Give an example of how ethical question related to people and their interactions with the environment.
Answer:
Global warming, global climate change, deforestation, pollution, resource degradation, the threat of extinction are few of the issues from which our planet is suffering. Environmental ethics are a key feature of environmental studies that establishes the relationship between humans and the earth.
There are many ethical decisions that human beings make with respect to the environment. For example: Should humans continue to clear cut forests for the sake of human consumption? Why should humans continue to propagate its species, and life itself? Should humans continue to make gasoline-powered vehicles?
There are many ethical decisions that human beings make concerning the environment.
What are ethical changes?Ethical issues is a circumstance in which a moral conflict arises in the workspace.
Ethical issues in the workplace:
Unethical leadership.Toxic workplace culture.Abuse of leadership authority.Environmental ethics are a feature which establishes relationship between humans and the earth. Humans are cutting trees and harming nature for own greed.
Global warming, global climate change, deforestation, pollution, resource degradation are the few issues from which our planet is suffering. Humans should take care of nature and should grow trees. Industries should also make some eco freindly products.
There are many ethical decisions that human beings make concerning the environment.
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Select the statement that is true.
A. DNA has the sugar deoxyribose, while RNA has the sugar ribose
B. Thymine is only present in DNA, while cytosine is only present in RNA
C. DNA and RNA are both double-stranded
D. Translation copies DNA to mRNA, while transcription coverts mRNA into proteins
Answer:
C. DNA and RNA are both double-stranded
Explanation:
This is the only one that is true.
the lysis of red blood cells in blood agar is indicative of the presence of which enzymes?
cause of hemolysis is the action of hemolysins, toxins that are produced by certain pathogenic bacteria or fungi. Another cause is intense physical exercise. Hemolysins damage the red blood cell's cytoplasmic membrane, causing lysis and eventually cell death.
Explanation: One cause of hemolysis is the action of hemolysins, toxins that are produced by certain pathogenic bacteria or fungi. Another cause is intense physical exercise. Hemolysins damage the red blood cell's cytoplasmic membrane, causing lysis and eventually cell death.
BAP assesses an organism's ability to produce hemolysins, enzymes that damage/lyse red blood cells (erythrocytes). The degree of hemolysis caused by these hemolysins aids in the identification of members of the genera Staphylococcus, Streptococcus, and Enterococcus.
What hemolytic pattern does S aureus shows on BAP?On blood agar plates, colonies of Staphylococcus aureus are often encircled by zones of clear beta-hemolysis. The golden appearance of colonies of some strains is the etymological root of the bacteria's name; aureus meaning "golden" in Latin.
The action of hemolysins, toxins produced by certain pathogenic bacteria or fungi, causes hemolysis. Intense physical activity is another cause. Hemolysins cause lysis and eventually cell death by damaging the cytoplasmic membrane of red blood cells.
The action of hemolysins, toxins produced by certain pathogenic bacteria or fungi, is one cause of hemolysis. Intense physical activity is another cause.
Thus, Hemolysins cause lysis and eventually cell death by damaging the cytoplasmic membrane of red blood cells.
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Awnser question in image
Answer:
B. 48 degrees c
Explanation:
Answer:
48 Degrees Celsius
Explanation:
It’s going up by one more than it went up the last time. Another way of looking at it is the increasing factor of the degrees is being added by one every single 2 hours.
Hope This Helped!
A student wants to develop an explanation of the role cellular respiration and photosynthesis play in the cycling of matter.
Answering which of the following questions would MOST help the student develop an explanation?
a
Which type of energy is used during photosynthesis and released during cellular respiration?
b
Which products of cellular respiration are also used as inputs during photosynthesis?
c
Which inputs or outputs of photosynthesis and cellular respiration are a source of heat?
d
Which cell organelles carry out the processes of photosynthesis and cellular respiration?
Answer:
D. Which cell organelles carry out the process of photosyinthesis and cellular respiration?
Cellular respiration is the process which occurs in the mitochondria of organisms (plants and animal) to break down sugar in the presence of oxygen to release energy in the form of ATP. This process generate carbon dioxide and water as waste products.
Photosynthesis is defined to as process by which green plants and certain other organisms transform light energy into chemical energy occurs in organelle chloroplast. Thus, the correct option is D which is which cell organelles carry out the processes of photosynthesis and cellular respiration?
What is ATP?
Adenosine 5′-triphosphate, (ATP) is an important “energy molecule” found in all life forms. Mainly, it is a coenzyme which works with enzyme namely ATP triphosphatase to transfer energy to cells by releasing its phosphate groups.
Mitochondria is known as the power house of cell and chloroplast is organelle produce green colour pigment called chloroplast which help in photosynthesis.
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which gases contribute to the greenhouse effect brainly
Answer:
carbon dioxide, methane, nitrous oxide, water vapor
Explanation:
these all are greenhouse gases
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PLEASE HELP RIGHT NOW ASAP!!!!! 100 POINTS TO WHOEVER ANSWERS CORRECTLY!!!!!! :)
A group of students prepared a table listing the types of reproduction that occur in several organisms. Based on this information, which of the organisms can produce offspring that are genetically identical to the parent organism? Explain your reasoning.
ANSWER: cats and frogs
a student conducts an experiment to test how the temperature affects the amount of sugar that can dissolve in water. in the experiment, she uses 100 milliliters of water in each trial and stirs for five minutes each time. what is the independent variable in this experiment?
Describe the significance of enzymes in our digestive system having different optimal pH and optimal temperatures. (Hint: What does this allow our bodies to do?)
Answer:
Digestive enzymes play a key role in breaking down the food you eat. These proteins speed up chemical reactions that turn nutrients into substances that your digestive tract can absorb. Your saliva has digestive enzymes in it. Some of your organs, including your pancreas, gallbladder, and liver, also release them.
For most enzymes to operate in the body, the optimal temperature is 37 degree Celsius or 98 degrees Fahrenheit. Most of the human enzymes have a maximal activity at pH around 7.2, which is the pH of most body fluids. However, there are exceptions such as, pepsin.