The mass of a 5.0 cm³ sample of sulfur with a density of 2 g/cm³ is 10 grams. The calculation involves simply multiplying the given density by the volume.
Explanation:The question is asking about calculating the mass of a sample of sulfur given the density and volume. The density of a substance is the ratio of the mass of a sample of the substance to its volume. The density of sulfur is given as 2 g/cm³. To find the mass of the sample, you simply multiply the density and volume. In this case, the volume is 5.0 cm³, so the mass is 2 g/cm³ x 5.0 cm³ = 10 grams.
This is based on the general principle that density = mass/volume. In this situation, sulfur is a nonmetallic mineral, and like many nonmetals, it has an oxidation state of 2-. Sulfur can react with most metals and readily forms the sulfide ion, S²-, further indicating its nonmetallic nature.
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Bacteria perform a specific type of asexual reproduction, which is called
Answer:
binary fission is the answer
Explanation:
Which choice is an example of an organism? A. the stripes on a tiger B. a bee hive C. an apple seed D. a hickory tree
In the United States, tornadoes generally occur because of the
Answer:
cool and warm air masses
Explanation:
A wildlife researcher wants to know how a species of fox behaves in its natural habitat. The researcher should A. observe the foxes in their environment. B. perform an experiment on the foxes. C. make a model of the foxes and their habitat. D. observe the foxes in a laboratory.
Materials generally become warmer when light is
Materials warm up when light hits them due to energy transfer. The light energy is absorbed by the material and transformed into heat energy, similar to how sunlight warms the earth or a car's interior.
Explanation:Materials typically get warmer when light is shined onto them due to a process called energy transfer. Light carries energy, which is absorbed by the material's atoms and converted into heat. This is similar to how sunlight warms the earth.
For instance, when sunlight hits a car's windshield, the car interior heats up. This is because the light energy is absorbed by the car's interior surfaces and transformed into heat energy.
This principle is also used in solar panels, where light energy is transformed into electrical energy. The warmth you feel when light hits an object is an indicator of this energy transformation.
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Lucia is given a picture of several cells. Her task is to identify the cells as plant or animal cells. How can she pinpoint the cells that are plant cells? A) She should look for a cell membrane surrounding the cell. B) She should look for cytoplasm that is filled with organelles C) She should look for a large nucleus in the center of the cells. D) She should look for ovals full of green dots called chloroplasts.
Answer:
d
Explanation:
She should look for ovals full of green dots called chloroplasts.
The correct option is She should look for ovals full of green dots called chloroplasts.
What is cell?
Cell is the basic unit of life. There are two types of cell. Plant cell and animal cell. Plant cell is the basic unit of kingdom plantae.
The fundamental unit of life in species belonging to the kingdom Plantae is the cell. They are eukaryotic cells, which have specialized components called organelles and a real nucleus that performs several duties.
Chloroplasts are unique organelles found in plant cells that use photosynthesis to produce carbohydrates. They also have a cell wall, which serves as support for the structure.
Therefore, The correct option is She should look for ovals full of green dots called chloroplasts.
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1
Why do people add bacteria to some foods, but kill bacteria in other foods?
A.
Not all people like the flavor of bacteria.
B.
All bacteria are safe, but they make food taste bad.
C.
Bacteria always make people sick.
D.
Different bacteria may be helpful or harmful.
Answer: D) Different bacteria may be helpful or harmful.
Explanation: Took The K12 Quiz
How is the world population projected to change in the next few decades? a. It is projected to level off. b. It is projected to decrease steadily. c. It is projected to increase steadily. d. It is projected to double within 5 years. Please select the best answer from the choices provided A B C D
The correct answer is option c. It is projected to increase steadily.
Explanation;
The current population of the world is estimated as more than 7.2 billion. The population is projected to be increased by 1 billion and has also estimated to cross 9.6 billion by the end of the year 2050. So, the population is increasing at a steady rate. In the total population increase, the contribution of the developing countries would be more.
The best answer is that it is projected to increase steadily, which is option C. According to the United Nations, the world population is projected to increase from 7.9 billion in 2021 to 9.7 billion in 2050 and reach 10.9 billion by the end of the century.
What is the population of the world?The world population is projected to increase steadily in the next few decades due to a combination of factors such as continued improvements in healthcare, increasing life expectancy, and high fertility rates in some parts of the world. According to the United Nations, the current global population is around 7.9 billion people, and it is expected to reach 9.7 billion by 2050 and 10.9 billion by the end of the century.
Hence, the best answer is that it is projected to increase steadily, which is option C. According to the United Nations, the world population is projected to increase from 7.9 billion in 2021 to 9.7 billion in 2050 and reach 10.9 billion by the end of the century.
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What is the name for the average time needed for half the nuclei in a sample of a radioactive substance to undergo radioactive decay?
A. half-life
B. half-year
C. half-death
D. half-month
When milk goes sour, what type of change has happened?
a. physical only
b. chemical only
or
c. physical and chemical
Why do you need your respiratory system to live? Explain.
Which of the following is FALSE about protein molecules?
A.Their function is a result of their shape and folding.
B.Proteins are made up of strands of glucose and joined together in specific sequences.
C.Protein molecules perform many different functions in the body.
D.The order of the amino acids in the protein is important and helps determine its eventual function.
Answer:
B.Proteins are made up of strands of glucose and joined together in specific sequences.
Explanation:
Proteins are made up of amino acids. An amino acid consists of an alpha carbon connected to an amino group (NH2) and a carboxyl (COOH) group. It also has a side chain 'R' which defines its many properties.
Amino acids link to each other via peptide bonds to form a protein. Two amino acids form peptide bond when amino group from one amino acid forms bond with carboxyl group of another amino acid and a water molecule is released in the process. This reaction is called as condensation or dehydration reaction.
Eventually the function and properties of a protein are determined by the amino acids in it and the way the protein has folded and taken a specific shape. Hence, the statement that proteins are made up of strands of glucose is false.
How many protons are in an element with an atomic number of 8 and a mass number of 18
Rabbits have overrun a community garden and are eating everything in it. Which of the following would be the
A) Hawks
B) Poison
C) Traps
D) Hunting
Sex-linked recessive disorders are most often passed from mother to sons
Which of these experiments would make use of qualitative data?
A study of different surfaces to compare ability to repel water
A study of different shapes to compare rolling friction values
A study on the effects of sunlight on the growth rate of plants
A study on the change in freezing point of water when salt is added
I believe that the correct answer is the first answer: A study of different surfaces to compare ability to repel water
What has prokaryotic cells?
Onion root
Cows liver or
Human blood
Answer:E coli
Explanation: Which is kinda ironic considering it not even on here
A science student makes the following statement. A raccoon may live longer when it eats only vegetables. What is the student doing
Read the following selection from "A Retrieved Reformation" and answer the question that follows:
Pulling out from the wall a folding-bed, Jimmy slid back a panel in the wall and dragged out a dust-covered suit-case. He opened this and gazed fondly at the finest set of burglar's tools in the East...
...In half an hour Jimmy went down stairs and through the cafe. He was now dressed in tasteful and well-fitting clothes, and carried his dusted and cleaned suit-case in his hand.
"Got anything on?" asked Mike Dolan, genially.
"Me?" said Jimmy, in a puzzled tone. "I don't understand. I'm representing the New York Amalgamated Short Snap Biscuit Cracker and Frazzled Wheat Company."
What does this selection suggest Jimmy's next step will be? (5 points)
He will become a shoe salesman.
He will sell crackers to Mike.
He will go into business with Mike.
He will go back to his criminal ways.
What causes tides to occur in the ocean?
"It is best to go skiing in January. It snows most of the month of January" This refers to the area's ______ weather or climate?
"I'd better put on my galoshes" it's going to be a wet one" This refers to the area's ______ weather or climate?
"I was going to wear my favorite dress today ,but I looked out my window and saw the trees blowing in the wind. I figured it would be windy most of the day." This refers to the area's ______ weather or climate?
The first statement about skiing in January refers to the area's climate, which is long-term weather patterns, while the other two statements about wearing galoshes and the windy conditions refer to the day's weather, which are the current atmospheric conditions.
The sentences you've provided refer to the concept of weather and climate, two different aspects of atmospheric conditions. Let's clarify each statement:
"It is best to go skiing in January. It snows most of the month of January" refers to the area's climate. Climate is the average weather conditions in an area over a long period, and if it snows often in January, that's a climatic pattern."I'd better put on my galoshes; it's going to be a wet one" refers to that day's weather. Weather is the short-term atmospheric conditions, and this statement talks about the expectation of rain for the day."I was going to wear my favorite dress today, but I looked out my window and saw the trees blowing in the wind. I figured it would be windy most of the day." This again refers to the day's weather, as it describes the immediate conditions that are affecting what the speaker might wear.In essence, climate is what you expect, like snow in January in Wisconsin, while weather is what you get, like a rainy or windy day.
The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called_______?
what is a type of tissue that both plant and animals have??
A.nerve
B.ground
C.protective
D.connective
the latin word porus means passage. how does this meaning relate to the pores of the skin
The word porous is related to the pores of skin. Skin which has small openings in the skin are called as porous skin.
What is Porous skin?Pores are the small openings which are present at the top of hair follicles that covers the entire body surface. The pores release sebum, the body’s natural oil, to naturally moisturize the skin to help keep it supple and smooth. Although the large pores on the skin can be frustrating, pores are necessary for the maintaining healthy skin.
Usually, genetics determine the larger pores. However, the oily skin, sun damage and aging can be other factors which make the body pores look bigger.
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How did Robert Whittaker change classification?
Answer:
D
Explanation:
The scientific name for the dog is Canis lupus. The scientific name for the domesticated cat is Felis catus. Dogs and cats live together, play together, but they do not have offspring together. A cat and a dog can not produce fertile offspring because they are not the same A.class B. domain C. phylum D. species
The correct answer is option D. species.
It is the individuals of a species which can interbreed to produce fertile off springs. This concept is known as biological species concept. The individuals from different species cannot produce fertile off springs even if they mate. It happens because the eggs produced by the female of a particular species is compatible with the sperms of male of that particular species only. Even if through mating, sperm of a dog will reach the egg of a cat who belongs to another species, it will not be able to fuse with the egg. For fusion of egg and sperm their compatibility is must & they are compatible only if the male and female are of same species.
There are some exceptions to this concept like liger is an off spring which is produced when a male lion mates with a female tiger even though they both belong to different species. But, even though they are able to reproduce an off spring yet this off spring is not fertile.
What stage of cellular respiration produces pyruvate as a product? (2 points)
Glycolysis
Electron transport chain
Krebs cycle
Fermentation
Answer:
The answer is A, glycolysis.
Explanation:
Enzymes are proteins. What would happen to the enzymes of your body if your body temperature started to rise to an abnormally high degree?
A.The enzymes would become denatured and their active sites would lose their shape causing them not to work.
B.The enzymes' substrates would become changed in shape and no longer fit the active sites of the enzyme.
C.Nothing, the enzymes would be fine because they are very stable molecules.
D.The enzyme would become larger than the substrate but would still continue to work, just not as well
What is the material within the nucleus that carries the instructions to build proteins
Facilitated diffusion and ________________ are alike since neither requires energy. A) endocytosis B) phagocytosis C) active transport D) simple diffusion
Answer:
CCCCCCCCCCCCCC
ACTIVE TRANSPORT
Facilitated diffusion and simple diffusion are similar in that they are passive transport mechanisms that do not require energy, with the difference being that facilitated diffusion uses carrier proteins.
Facilitated diffusion and simple diffusion are alike since neither requires energy. The correct answer is D) simple diffusion. Facilitated diffusion and simple diffusion are both passive transport mechanisms that allow substances to move across the cell membrane without the need for cellular energy (ATP). However, facilitated diffusion differs from simple diffusion as it involves carrier proteins that help larger or less permeable molecules pass through the cell membrane. In contrast, active transport mechanisms like endocytosis, phagocytosis, and ion pumps require energy to move substances against their concentration gradient.