Answer:
C
Explanation:
When irrigation water containing significant salt content is used—without applying extra water to leach out the salts—accumulation of salts can create a saline soil.
Using a codon table, which amino acid is coded for by the codon G-G-G?
Answer:
Glycine
Explanation:
Which of the following occurs during transformation?
A pilus transfers genes between cells.
DNA is excised from one location to another within a DNA molecule.
Genes are transferred between cells in a virus.
Naked DNA is taken up from the environment.
Explanation:
B. DNA is excised from one location to another within a DNA molecule
During pregnancy under what condition is Rh factor incompatibility a problem
Answer:
what type of qustion is this
Explanation:
The stomach makes a substance that gives the correct pH for enzyme action. Name this substance.
Answer:
The stomach produces hydrochloric acid.It kills many harmful microorganisms that might have been swallowed along with the food.The enzymes work best in acidic conditions-at low pH
Hydrochloric acid is an important component of the gastric juice in animal species such as humans. This maintains the pH in the stomach.
What is Hydrochloric acid?Hydrochloric acid is also known as muriatic acid, it is an aqueous solution of the compound hydrogen chloride. Hydrochloric acid is a colorless solution with a distinctive pungent smell. It is mainly classified as a strong acid. However, it is a component of the gastric acid in the digestive systems of most of the animal species, including humans. Hydrochloric acid is an important component of the digestive system.
Hydrochloric acid (HCl) is a part of the gastric juice. It plays an important role in creating the pH required for pepsin activity and for the maintenance of this pH. Parietal cells in the stomach are responsible for the production of HCl acid by secreting hydrogen and chloride ions separately. When pepsinogen and hydrochloric acid exist together in the gastric juice, pepsin is converted into its active form.
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5. Which describes the variable that is changed to test the prediction?
experimental
control
dependent
independent
Answer:
Independent
Explanation:
An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).
This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.
In an experiment , the variable being manipulated by an experimenter is known as an independent variable while the dependent variable is the event expected to change when the independent variable is manipulated.
Hence, independent variable describes the variable that is changed to test the prediction.
A student collected samples of cells from a woody plant during the spring and produced the drawings below. Sample 1 was collected from the woody stem of the plant. Sample 2 was collected from the root tip of the plant. Cells in different steps of mitosis are labeled with letters A, B, C, D, and E in Sample 2. Describe the role of mitosis in the growth of a plant.
The provided question is incomplete, however, the question asked is a very generalized question, answering it on the knowledge of mitosis.
Answer:
The correct answer is - mitosis has a great role in the growth of plants.
Explanation:
Mitosis is a type of cell division that occurs in the somatic cells of an organism. During mitosis, a parent cell divides into two daughter cells with the same number of chromosomes. There are no recombination takes place. This type of cell division is fast.
Mitosis occurs during asexual reproduction in the form of budding, propagation as well as repairing of the cells as they are fast, such as the regeneration of new cells. The growth of plants and development is dependent on mitosis as they produce cells more efficiently and fast and mitosis is the only cell division found in somatic cells.
Calcium nitrate is a compound commonly used as a plant fertilizer in agriculture and also in
wastewater treatment facilities. Let's suppose you need to prepare a 0.2 molar (0.2 M)
solution of calcium nitrate to spray a crop field. You will need to prepare 500 Liters to have
enough of this solution to spray the entire field. How much calcium nitrate will you need?
Answer:
16400g
Explanation:
The amount of Calcium nitrate {Ca(NO3)2} that will be needed can be calculated as follows:
Molarity (M) = number of moles (n) ÷ volume (L)
According to this question, molarity = 0.2M, volume = 500L
number of moles = molarity × volume
number of moles (n) = 0.2 × 500
n = 100moles
Using mole = mass/molar mass
Molar mass of Ca(NO3)2 = 40 + {14 + 16(3)}2
= 40 + (14 + 48)2
= 40 + 62(2)
= 40 + 124
= 164g/mol
Mass = mole × molar mass
mass = 100 × 164
mass = 16400g of Ca(NO3)2
Dendrite
Cell body
Myelin sheath
Axon
Terminal branches
This cell is representative of the
system.
:: nervous
:: muscular
5 skeletal
* endocrine
You have a solution in lab and increase the hydroxyl ion concentration. what is the impact on the pH of the solution.
A. The pH stays the same.
B. The pH rises.
C. The pH decreases.
Answer:
it will option C. hope it helps
Why did the Vancouver Fraser Port Authority select Maplewood Flats as a restoration area to
offset their Centerm Expansion Project (CEP), rather than another location in Burrard inlet?
Select one:
a. Because it offers the greatest improvement in environmental conditions, sufficient to
match the damage caused by CEP, for the least expense.
b. Because it is the most species diverse site in the Burrard inlet
c. Because it is the most polluted site in the Burrard inlet
d. Because it has been identified as a significant anthropological and wildlife conservation
area
Answer:
a. Because it offers the greatest improvement in environmental conditions, sufficient to match the damage caused by CEP, for the least expense.
Explanation:
The businesses are required to restore the land to their original condition once they are with their business activities. The business operations often causes damage to the site and nearby land, for this reason restoration is mandatory in many countries. Vancouver Fraser Port Authority selects Maplewood Flats for the restoration activity because it offers the restoration at cheap cost. This will save company's cost and the land will be to its original condition with least possible damage to environment.
Please help me asapppp anyone I will give brainliest
Answer: 1 = B, 2 = C, 3 = A
Explanation:
i)Which one of the following substances have sour test.a) acid b)base c) salt d) all of these
Answer:
a) acid
Explanation:
Acid is a chemical substance that is capable of donating protons (H+) when in an aqueous solution. This property makes a substance an acid, although the ability to donate completely or partially distinguishes a strong and weak acid.
One of the characteristics of acids is their SOUR TASTE. This characteristic sour taste is attributed to the hydrogen concentrations present in acidic foods or substances e.g unripe fruits.
What is a real world example of a molecular pump in the human body?
Answer:
The most common example of a molecular pump in the human body is the pump for sodium and potassium.
Explanation:
Sodium ions and ATP bind to the pump to use energy to change the shape. The sodium then leaves and the potassium can now bind due to the shape change. The potassium ions are then released and the pump goes back to normal for the cycle to repeat again.
explain how low blood pressure can cause poor blood circulation
Answer:
People with very low blood pressure may experience poor circulation and other related symptoms. However, having a lower blood pressure measurement is not usually a cause for concern in people with a healthy cardiovascular system
Explanation:
Hope it will help please mark it as brainliest
There are so many microbes in a single mL of culture, it is very difficult to perform one dilution to produce countable cells. Microbiologists need to perform a dilution series, where multiple dilutions are performed in sequence to arrive at the correct dilution. Dilutions are cumulative. Multiply the series of dilutions together to find the final dilution value. If 6 serial dilutions are performed, each with a dilution of 0.1, what is the cumulative dilution
Answer:
cumulative dilution = 0.000001
Explanation:
A serial dilution is a stepwise kind of dilution repeated a certain number of times, in which the concentration reduces exponentially each time.
The cumulative dilution is the final dilution gotten depending on the number of times dilution has been done and the dilution factor. The formula is given as:
Cumulative dilution = (F)ⁿ
where:
F = dilution factor = 0.1
n = number of serial dilutions = 6
∴ cumulative dilution = (0.1)⁶ = 0.000001
How can natural selection account for the long tongues of butterflies?
Which DNA base is referred to as a wild card due to its ability to change into one of the other bases?
(WILL REWARD)
a. Cytosine
b. Guanine
c. Uracil
Answer:
cytosine
Explanation:
Everyone in Smurfette’s family has light blue skin, which is the dominant trait for body color in her hometown of Smurf Valley. Her family brags that they are a "true bred" or "purebred" line. She recently married a nice boy who has light yellow skin, which is a recessive trait. Create a Punnett square to show the possibilities that would result if Smurfette and her new husband had children.
Answer:
All their descendants will be heterozygous for the skin color, Bb, expressing blue skin.
Explanation:
Available data:
Smurfette has light blue skinHer family is a "true bred" or "purebred" line.She married a boy who has light yellow skinblue skin is the dominant trait expressed by the B alleleyellow skin is a recessive trait, expressed by the b alleleCross: Smurfette x Husband
Parentals) BB x bb
Gametes) B B b b
Phenotypes) blue skin yellow skin
Punnett square)
B B
b Bb Bb
b Bb Bb
F1) 100% of the progeny will be heterozygous for the skin color, Bb
100% of the progeny will be blue-skinned.
Note: Although the progeny is blue-skinned, they are not true-bred anymore.
he following is NOT true about trophic levels: Primary consumers belong to the first trophic level. Secondary consumers belong to the third trophic level. Each stage through which energy travels is called a trophic level. Many species may belong to several trophic levels. Animals capable of feeding at many trophic levels will be able to survive if portions of their food supply are decreased or eliminated.
Answer:
Animals capable of feeding at many trophic levels will be able to survive if portions of their food supply are decreased or eliminate is not true of about trophic levels
Explanation:
This is because each trophic levels represent energy flow and supply of food to the organisms in the trophic levels. Energy are pass from one tropic levels to another as a result of source of food there. Plants majorly are the primary producers and the primary consumers depend on it. Therefore, if the source of food supply is eliminated in a trophic level, the organisms I'm the trophic level will not be able to survive.
Animals are___ and are____,meaning we spend a lot of time hunting down food because we can't make it ourselves.
Answer: Multicellular; heterotrophic
Explanation: Hope this helps :)
What is the relationship between an individual named Pinus palustris and an individual named Pinus elliottii? (2 points)
a
They belong to the same species.
b
They belong to the same genus.
c
They have one parent in common.
d
They live in different areas.
Answer:
I would think it's B hope this helps.
Explanation:
Answer:
The answer is,
B ). They belong to the same genus.
Explanation:
I took the test.
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Which of the following is a function of the cell membrane? (1 point)
a
Producing energy
b
Creating new cells
c
Eliminating of waste
d
Replacing damaged cells
Answer:
C
Explanation:
The cell membrane has 3 major functions,
1) Provide a protective barrier for the cell
2) Eliminate toxins and waste, using osmosis and diffusion
3) Transport nutrients to the cell
What happens during Go phase of the cell cycle?
O A. The cell splits in two.
B. The cell starts to die.
O c. The cell continues to live.
D. The cell makes new chromosomes.
Explanation:
The answer is C. because this is a new cell that is not preparing to divide or die..
The study of the interactions between organisms and their interrelationships with the physical environment is known as
1,260 deer are living on an island that is 840 square kilometers in size. What
is the population density of the deer per square kilometer?
Answer:
1.5 deer/km^2
Explanation:
Which test tube in the experiment best represents a normal stomach?
A. Protein + hydrochloric acid
B. Protein + pepsin
C. Protein + pepsin + hydrochloric acid < (I think?)
D. Protein + water
What three things do trees need to be able to grow?
Answer:
Air, Water, and Sunlight
Explanation:
Answer:
They need water,Sunlight,and nutrients
Type the correct answer in the box. Spell all words correctly.
What do you need to use in order to work as an environmental scientist?
You need to use the scientific method and _________
in order to work as an environmental scientist.
Answer:
You need to use the scientific method and Knowlegde of the environment in order to work as an environmental scientist.
Explanation:
Cladograms represent hypotheses about evolutionary relationships, what are these relationships based on?
Answer:
A cladogram is an evolutionary tree that diagrams the ancestral relationships among organisms. In the past, cladograms were drawn based on similarities in phenotypes or physical traits among organisms. Today, similarities in DNA sequences among organisms can also be used to draw cladograms.
Because of a snowstorm, your regular laboratory session was cancelled and the gram staining procedure performed on cultures incubated for a longer period of time. Examination of the stained B. cereus slides revealed a great deal of color variability, ranging from an intense blue to shades of pink. Account for this result.
Answer:
Bacteria start to die, thereby changing the dye concentration in the medium and producing different colors
Explanation:
Bacillus cereus are Gram-positive, rod-shaped bacteria that form orange-pink colonies in agar media (e.g., BACARA medium, which is used for detection and enumeration of B. cereus). In this case, it is expected that after a long time without taking care of the culture, the bacteria started to die. Subsequently, lysed bacterial cells lost their dye which accumulated in some areas of the medium, thereby showing different colors ranging from an intense blue (areas with dead bacteria) to shades of pink (areas with bacteria still alive and viable).
The color of some colonies are changing bacause of long incubation due to death of bacteria.
Bacara agar medium:
It is used for detection and enumeration of B. cereus. Bacteria gives orange-pink colonies in the media.
This detection method only detects the live bacteria, but here bacteria are dieing because of lake of food in media.
Therefore, the color of some colonies are changing bacause of long incubation due to death of bacteria.
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