Answer:
C
Explanation:
Wind, humidity, and rocks are all ____________________in a terrestrial ecosystem.
Answer:
Abiotic factors
Explanation:
which theory states that homo sapiens began in a single geographical area and spread out from there?
a. out of africa theory
b. tectonic theory
c. multi-regional theory
Answer:
The out of Africa theory states that Homo sapiens began in a single geographical area and spread out from there.
Explanation:
A is correct because the ''out of Africa theory'' suggests that the Homo sapiens began as a species in Africa and from there it gradually spread out on the other continents across the world.
B is not correct because the ''tectonic theory'' is a theory that has nothing to do with the Homo sapiens species, but it is a theory about the movement of tectonic plates.
C is not correct because the multi-regional theory suggests that the Homo sapiens evolved into multiple regions simultaneously, not in one region only.
Which of the following statements about the action potentials in contractile myocardial cells (cardiac muscle) is INCORRECT? Compared to skeletal muscle cells, contractile myocardial cells have a lower (more negative) resting membrane potential. Action potentials are propagated between adjacent cardiomyocytes through gap junctions. The duration of an action potential in a contractile myocardial cell is greater than the duration of an action potential in a typical neuron. During the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium.
Answer: During the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium.
Explanation:
Apart from the fact that contractile cells conduct impulses, it also helps in contractions which are needed for pumping of blood. It should also be noted that the myocardial conducting cells serves as the heart's conduction system. They also have a lower resting membrane potential.
Of the options given, the answer is the last option i.e. during the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium. This is wrong.
Repolarization occurs due to a rise in the permeability of potassium and during repolarization, the calcium channels close.
.. Formulating Hypotheses Propose a hypothe-
sis to explain why angiosperms have become the
dominant type of plant on Earth.
Brodribb and Feild argue that more photosynthesis meant more carbon for growth. And that would have given the angiosperms the energy to push competitors like conifers out of the canopy around 150 million years ago, making angiosperms the most productive group of land plants in the world.
where is glucose produced
Answer:
The liver produces, stores, and releases glucose depending on the body's need for glucose, a monosaccharide. This is primarily indicated by the hormones insulin – the main regulator of sugar in the blood – and glucagon.
Given the chemical formula , how is this substance MOST likely classified ?
Answer:the answer is what the he double hockey sicks is the formula
Explanation:we cant do this without it
What is the correct order of steps in the scientific method?
A. Ask a question, make a hypothesis, test the hypothesis, draw
conclusions, and analyze results.
B. Ask a question, make a hypothesis, test the hypothesis, analyze
results, and draw conclusions.
C. Ask a question, analyze results, make a hypothesis, test the
hypothesis, and draw conclusions.
D. Make a hypothesis, test the hypothesis, analyze results, ask a
Answer:
B. Ask a question, make a hypothesis, test the hypothesis, analyze
results, and draw conclusions.
Explanation:
Answer:
B.Ask a question ,make a hypothesis, test the hypothesis, analyze
As a result of global warming, what evolutionary changes could we inher might eventually be seen in polar bears!
A They will develop thicker, warmer coats.
B. They will develop thinner and darker for
C. They will lose their ability to swim
D. They will become hervores.
Answer:
B. They will develop thinner and darker for-
Explanation:
To survive in a warmer climate you wouldn't put on a giant jacket.
Answer:
#lookitup.com
Explanation:
explain what surface tension is
Answer: the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area.
Explanation:
Life in an ecosystem relies on competition for limited resources.
True
False
"Life is an ecosystem which relies on competition for limited resources". This statement is true.
What factor determines the trait of an organism
A order of nucleotides in the DNA molecule.
B location of the DNA molecule within the cell.
C length of the original DNA strand.
D number of times the protein has already been produced.
Answer:
A order of nucleotides in the DNA molecule.
if a person didn’t have red cones, how would their perception of color change?
Answer:
They would be color blind.
Explanation:
For example, if the red cone is missing you will be unable to see colors containing red as clearly. There are several different types of color blindness. Dichromatism is when one of the cones is missing.
Answer:
if the red cone is missing you will be unable to see colours containing red as clearly. There are several different types of colour blindness. Dichromatism is when one of the cones is missing.
how do you write 0.625 as a whole number
Answer:
1
Explanation:
rounding
NEED HELP ASAP * IS MY ANSWER
The electrons in a water molecule are shared unevenly between the oxygen and hydrogen. This creates
A)a covalent bond that can never be broken
B)a slightly negative charge on the oxygen atom *
C)a slightly negative charge on the hydrogen atom
D)a strong ionic bond
Answer:
Its B (a slightly negative charge etc..)
I have a test about metabolism can someone please explain the subject well? Like just give me a explanation of how it works, and some examples or something.
Answer:
Metabolism is the process by which your body converts what you eat and drink into energy. During this complex biochemical process, calories in food and beverages are combined with oxygen to release the energy your body needs to function.There are three basic metabolism types: ectomorph, mesomorph, and endomorph – definitely words you probably don't use in your normal, day-to-day conversations.If your metabolism is "high" (or fast), you will burn more calories at rest and during activity. A high metabolism means you'll need to take in more calories to maintain your weight. That's one reason why some people can eat more than others without gaining weight.
Which letter is on the steepest slope?
(A.) A
(B.) B
(C.) C
Answer:
Letter B is on the steepest slope.
Explanation:
A is not correct because letter A is on a position where the contour lines are not close to each other, suggesting that the slope is not mild.
B is correct because the spacing between the contour lines where the letter B is marked is very small, suggesting that the slope is very steep.
wC is not correct because just like with letter A, the contour lines are not close to each other, but are further away, suggesting that the slope is not steep but it is mild.
Li-Fraumeni syndrome (LFS1) is a rare hereditary disorder that leads to a predisposition to cancer. This hereditary disorder is linked to mutations in the tumor suppressor gene encoding the transcription factor p53. p53 acts at the G1 checkpoint. If damaged DNA is detected, p53 halts the cell cycle. As p53 levels rise, the production of p21 is triggered. p21 enforces the halt in the cell cycle. A variant of Li-Fraumeni, called LFS2, is thought to occur due to a mutation of the CHK2 gene, which is also a tumor suppressor gene. CHK2 regulates the action of p53. Which of the following cascades is most likely to occur in a normal cell that does not contain the LFS mutation?
Answer:
CHK2, p53, p21, cell cycle progression.
Explanation:
In a normal cell with no LFS mutation, during the G1 stage of cell cycle progression, the CHK2 activates if there is damage in the DNA. CHK2 activates p53, which is a tumor suppressor protein that will hold the cell cycle in G1/S until the DNA is repaired. The p53 protein activates p21, a protein that binds to CDK2 and stops the cell cycle. The cell cycle will continue once the damage is repaired.
The peptidoglycan cell wall and the one or two membranes present also impart a three-dimensional shape to the bacterial cell. The overall shape and arrangement of bacteria are genetically determined, so that each genus of bacteria has a characteristic shape (round, rod, spiral, etc.) and arrangements of the growing cell population (individual cells, chains of cells, or clustered cells).Bin 1 - Image of a single round bacterium.Bin 2 - Image of a single rod-shaped bacterium.Bin 3 - Image of a cluster of round bacteria.Bin 4 - Image of a string of rod-shaped bacteria.Bin 5 - Image of a comma-shaped bacterium.Bin 6 - Image of a corkscrew-shaped bacterium.Drag the descriptive terms to the pictured bacterial shapes.
Answer:
The following images of different types of bacteria are attached here-
1- Single round bacterium- Cocci
2- Single rod-shaped bacterium- Bacilli
3- Cluster of round bacteria - Staphylococci
4- String of rod-shaped bacteria- Streptobacillus
5- Comma-shaped bacterium- Vibrio
6- Corkscrew-shaped bacterium- Spirillium
Explanation:
1- Single round bacterium- Cocci -Any bacterium or archaeon that has a circular, ovoid, or usually round shape is a coccus (plural cocci). Cocci may develop in pairs, chains, or clusters during cell division, depending on their orientation and attachment. Many cocci bacteria do not have flagella and are non-motile, in contrast to many bacilli-shaped bacteria.
2- Single rod-shaped bacterium- Bacilli -A rod-shape bacterium or archaeon is a bacillus (plural bacilli), or bacilliform bacterium. In several different taxonomic classes, bacilli are found. Bacilli typically divide and are solitary in the same plane, but can combine to form diplobacilli, streptobacilli, and palisades.[2]
Diplobacilli: Two bacilli with each other arranged side by side.
Streptobacilli: Arranged bacilli in chains.
Coccobacillus: Coccus-like and oval (circular-shaped bacterium).
3- Cluster of round bacteria - Staphylococci - In the family Staphylococcaceae from the order Bacillales, Staphylococcus is a genus of Gram-positive bacteria. They appear spherical (cocci) under the microscope, and form into grape-like clusters. The species Staphylococcus are facultative anaerobic organisms (both aerobically and anaerobically capable of growth)
4- String of rod-shaped bacteria- Streptobacillus -Streptobacillus is a genus of fastidious gram-negative microaerophilic bacteria, an uncommon disease that develops in culture as rods in chains.t and can be caused by two forms of bacteria, Spirillum minus and Streptobacillus moniliformis.
5- Comma-shaped bacterium- Vibrio -Vibrio is a genus of Gram-negative bacteria with a curved-rod (comma) shape, which can cause foodborne infection in several animals, typically associated with consuming undercooked seafood. Vibrio species, usually found in salt water, are optional anaerobes that test positive for oxidase and do not form spores.
6- Corkscrew-shaped bacterium- Spirillium -Spirillum, a genus of spiral-shaped bacteria of the Spirillaceae family, aquatic with the exception of one species (S. minus) causing a form of human rat-bite fever. For any of the corkscrew-like animals, the name spirillum is used commonly.
Microbiologically, Spirillum is characterized as a gram-negative, motile helical cell with whiplike flagella tufts at each end.
hence, the images of the different bacteria are attached below-:
Individuals tend to make decisions with the elimination-by-aspects strategy as choices become more simple. Please select the best answer from the choices provided OT o F
Answer:
false
Explanation:
hope this helps :)
It is false that individuals tend to make decisions with the elimination-by-aspects strategy as choices become more simple.
What is decision making?The process of making choices by identifying a decision, gathering information, and evaluating alternative resolutions is known as decision making.
By organizing relevant information and defining alternatives, a step-by-step decision-making process can help you make more deliberate, thoughtful decisions.
The significance of decision making is found in how it assists you in choosing between various options.
Before making a decision, it is necessary to collect all available information and weigh its pros and cons. It is critical to concentrate on steps that can assist in making sound decisions.
The ability to choose between two or more alternatives in order to achieve the best result in the shortest amount of time.
Thus, the given statement is false.
For more details regarding decision making, visit:
https://brainly.com/question/13244895
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4. In which International Metric units are length measurements expressed?
Answer:meters
Explanation:
A Tomato Has A Proton Concentration Of 0.00006 M. How Would You Calculate The PH?
Answer:
Option b. is correct
Explanation:
If hydronium ion concentration [tex]H_3O^+[/tex] is given then pH is given by [tex]-log[H_3O^+][/tex]
The hydronium ion refers to the hydrogen ion in aqueous solution.
A Tomato has A Proton Concentration Of 0.00006 M
Here, 0.00006 is equal to 6 × [tex]10^{-5}[/tex]
So,
pH is given by - log [6 × [tex]10^{-5}[/tex]]
Option b. is correct
The pH of the tomato which has a proton concentration of 0.00006 M is given by –Log (6×10¯⁵)
The correct answer to the question is Option B. –Log (6×10¯⁵)
From the question given above, the following data were obtained:
proton concentration [H⁺] = 0.00006 M = 6×10¯⁵ M
pH =?The pH of tomato can be obtained as follow:
pH = –Log [H⁺]
pH = –Log (6×10¯⁵)Thus, the correct answer to the question is Option B. –Log (6×10¯⁵)
Learn more: https://brainly.com/question/9278932
why genetic factor is very important in crop production
Answer:
The wise use of crop genetic diversity in developing improved crops can contribute significantly to protecting the environment. Crop varieties that are resistant to pests and diseases can reduce the need to apply harmful pesticides. More vigorous varieties can better compete with weeds, reducing the need for applying herbicides .
Explanation:
how are elements in the same group in the periodic table alike
Answer:
they have similar atomic masses
Explanation:
I just bombed this test and i have 1 retake left. please help!!
Answer:
Hey!
Your answer is EXERGONIC reactions!
Explanation:
The Ex- in the word symbolises that energy is RELEASED (exit)...most commonly thermal energy is released during the reactions...
They are also reactions that happen suddenly and without any assistance from the likes of enzymes or assisted contact or any other energy source!
I HOPE THIS HELPED YOU!NEED HELP ASAP * is my answer
Scientists are studying compounds in a newly discovered rain forest plant. The plant produces an unusual substance that local people say acts as an anesthetic. One scientist tested the substance with the chemical indicator iodine.
If the test is negative, which type of macromolecule is not present in the substance?
nucleic acid
carbohydrate
protein
lipid
Answer:
protein
Explanation:
Answer: The macromolecul that is not present is carbohydrates
Write a one sentence summary about viruses .
Answer:
A virus is a non-living structure that reproduces by infecting live cells (In any living organism be it a plant or animal) and killing them to spread more viruses around to other live cells, repeating the cycle of a virus.
This table lists examples of plants.
A
B
Plant Classifications
Gymnosperms
Flowering plants, grains, and fruit trees
Grains, flowering plants, and gingkos
Fruit trees, cycads, and grains
Conifers, cycads, and gingkos
Angiosperms
Conifers, cycads, and gingkos
Fruit trees, conifers, and cycads
Conifers, gingkos, and flowering plants
Flowering plants, grains, and fruit trees
Which row (A, B, C, or D) in the table accurately categorizes the plants as gymnosperms and angiosperms?
Answer:
D
Explanation:
Answer:
D
Explanation:
Multiple Choice Which option refutes Jim's argument in the following scenario?
Jim is a cattle farmer who prides himself on his ability to raise healthy stock. He believes that all cattle should be raised to be hearty, heavy, and visually appealing in order to make the most financial gain from the sale.
A Cattle must be healthy in order to function.
B Lower weight cattle sell for less at market.
C Breeders determine what traits are desirable.
D. Desirable traits vary by the buyer's role.
Answer:
Desirable traits vary by the buyer’s role.
Explanation:
NUMBER 13 PLEASEEE!!!!!
Answer:
A. Mineral
Explanation:
How much do you need to drink?
About 15.5 cups (3.7 liters) of fluids a day for men. About 11.5 cups (2.7 liters) of fluids a day for wome
