8. Which activity is an example of a chemical change?
a)dissolving table salt in water
b)hammering aluminum into thin sheets
c)melting gold to make jewelry
d)burning wood to produce ashes
What is the meaning of organism
Answer:
An organism is a single individual, or being. While it may have many separate parts, the organism cannot survive without the parts, as the parts cannot survive without the organism.
Explanation:
Which practice is an unsustainable way of managing resources?
A. Using renewable energy resources that generate no waste
B. Using grocery bags only once before disposing of them
C. Using household appliances that consume energy efficiently
D. Recycling nonrenewable minerals instead of throwing them away
Answer:
[tex]\boxed {\tt B. \ Using \ grocery \ bags \ only \ once \ before \ disposing \ of \ them}[/tex]
Explanation:
Let's analyze the answer choices. Remember we are looking for an unsustainable option.
A. Renewable energy is a great sustainable practice because it doesn't produce waste.
B. Using grocery bags once is not sustainable. Single use plastic is not good for the environment because it is used one time and then thrown out.
C. Energy efficient appliances are sustainable. They don't consume as much energy.
D. Recycling is always an environmentally friendly option. It allows some materials to be used again.
The choice that is not sustainable is B. using grocery bags only once before disposing of them.
The original cell theory has been expanded upon since it was first developed to include further additions due to advances in research on the cell. Which statements were not in the original cell theory, but are further explained by the modern cell theory? Check all that apply.
Answer:
This question is incomplete
Explanation:
However, it should be noted that the original cell theory is also referred to as the classical cell theory which has the following basic points
1) All living organisms are made up of cells.
2) Cells are the structural and functional units of life
3) All cells can only come from pre-existing cells or cells can only be cultured from pre-existing cells
However, the modern cell theory has some new points that the classical cell theory does not have. These include
1) Cells have and pass hereditary information during cellular division
2) All cells are made up of relatively the same amount of chemical composition and undertake the same metabolic activities.
These points should assist in answering the completed question
Answer:
B and D
Explanation:
Cell contains hereditary information that is passed from cell to cell during cell division.
All cells perform similar metabolic activities.
Many monosaccharides bonded together would make a
-nucleic acid
-protein.
-lipid.
-polysaccharide.
Answer:
D
Explanation:
polysaccharide
A group of organisms of the same species living together in a particular place is called ____?
Answer:
Population
Explanation:
common sense ig
Is the height of a wave measured from its midline
What does it mean????
Worldwide, about twice as many people eat a plant-based diet as eat a meat-based diet. A plant-based diet requires fewer resources to produce. It takes 28 calories of fossil-fuel energy to produce 1 calorie of protein from meat. In contrast, it takes only 3.3 calories of fossil-fuel energy to produce 1 calorie of protein from grain. With the population continuing to increase, some people believe it may be necessary to give up meat-based diets to ensure that there are enough resources to produce food for all people.
Do you think that a plant-based or a meat-based diet is more nutritious, or are they both equally nutritious? Why does a plant-based diet require fewer resources to produce? Do you think people should eat less meat? Why or why not?
Answer:
I think that a plant diets and meat diets are equally nutritious. A plant-based diet requires fewer resources because if it was an animal the animal would need food and water every day, a plant needs water every couple days. I don't think people should eat less meat, because meat is good for you, meat helps you gain muscle mass, gives you stronger bones and hepls you gain protein.
Explanation:
hope this helps!
PLS HELP I GIVE BRAINLIEST IF CORRECT
The arctic tundra is located in the northern hemisphere. True or False?
Answer:
this is true!!!!!!!!!!
Which of the following is NOT one of the five sectors that use products produced by the biotechnology industry? *
A. Healthcare
B. Agriculture
C. Ethics
D. Forensics
Answer:
Healthcare
Explanation:
what is the difference between behavior and homeostasis
Answer:
To maintain homeostasis, organisms must constantly respond to external and internal stimuli. behavior - set of actions taken by an organism in response to a stimulus. Many animals must decide to fight or flee when in danger.
Explanation:
Answer:homeostasis
Explanation:
the homeostasis focuses on the real person and the behavior only focuses on the actions
Which of the following demonstrates an organ providing a force
Answer:
I would say it is B because when u pull your leg up the space in your muscles are smaller when you spread your leg out they relax because they are not pulling anything.
Explanation:
Answer:
The heart provides the force
Explanation:
Genetics Unit Test
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?
1.) The manual is a gene.
2.) The manual is a chromosome.
3.) Each set of instructions is a protein
4.)Each structure is a gene.
Answer:
I'm guessing it's A
Explanation:
The correct answer is option 2. As the interlocking structure is a chromosome.
The chromosomes are the building blocks of the genetic code. a manual has instructions regarding how to build blocks and is also used to make models.
What are genetic instruction manuals?At the functional level genes, DNA is all instruction manuals that describe cells information. these genes are transferred during fertilization ad passed on to the offspring.
Thus it is concluded that the manual chromosome for model of genetic.
To know more about manual chromosomes refer to the link:
https://brainly.com/question/24732293
How is the heart different from all other muscles?
Answer: The heart never wears out, while your muslces will fatigue. Your heart doesn't, it's a trooper!
One way the heart is different from the other muscles is it is a life depending muscles it's also a cardiac muscle.
PPLLLLLZZZZ HELP
Describe the major events in the cell cycle. Begin at G1 and follow around the cycle through M
Answer/Explanation:
The cell cycle consists of interphase and mitosis (M). Within interphase, there are three phases: G1, S, and G2.
G1 phase - the first 'gap' phase.The cell grows in size, and synthesises the necessary mRNA and proteins required to divide. This is also where the key decision as to whether the cell will divide takes place. This is based on whether or not the environmental conditions are favourable for division and whether the cell is receiving the correct signals to divide. This is called the G1/S transition, and is the critical decision making point as to whether the cell cycle will progress.
S phase - the 'synthesis' phase. The cell replicates its DNA in preparation for passing the genetic material onto the daughter cells. Once the cell's DNA is replicated, it enters G2.
G2 phase - the second 'gap' phase. The cell continues to grow in size and prepare for mitosis. There is a DNA damage checkpoint here, where the cell ensures that the DNA has properly replicated. Next, it moves into mitosis (M).
M phase - the mitosis phase. This consists of 4 stages (PMAT) - prophase, metaphase, anaphase, telophase. The cytoplasm divides during cytokinesis
During prophase the chromosomes condense and pair up. The mitotic spindle forms, and the nuclear membrane disappears. During metaphase, the chromosomes line up at the centre of the cell - at the metaphase plate. The mitotic spindles attach to the chromosomes - to each sister chromatid.During anaphase, the sister chromatids are pulled apart to opposite poles of the cellDuring telophase, two new nuclei form, surrounding the two new sets of chromosomes. Cytokinesis then occurs, pinching the membrane to create two new cells.which of the following is a carbohydrate?
Answer:
Sucrose
Explanation:
Sucrose is a monosaccharide of a sugar (carbohydrate).
Describe the costs, safety, and reliability of your proposed solutions, as well
as any social, cultural, and environmental impacts your solutions address.
The costs, safety, and reliability of your proposed solutions, as well as any social, cultural, and environmental impacts your solutions address.
They will impact because they will be helping.
Evaluate your proposed solutions for their impact on overall environmental stability and changes. Which solution has more impact?The food because they need to have protein to live .
Thus, They will impact because they will be helping.
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What is a carbon reservoir and what are some examples?
Answer:
Carbon is in a constant state of movement from place to place. It is stored in what are known as reservoirs, and it moves between these reservoirs through a variety of processes, including photosynthesis, burning fossil fuels, and simply releasing breath from the lungs.
Examples-Rocks like limestone and fossil fuels like coal and oil are storage reservoirs that contain carbon from plants and animals that lived millions of years ago.
Explanation:
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Which two activities provide the reactants for cellular respiration?
releasing air and exercising
breathing in air and exercising
releasing air and eating food
breathing in air and eating food
Answer:
Breathing in and eating food
Explanation:
To sum it up easily is the reactants for cellular resperation is glucose (sugar) and Oxygen. First we get oxygen from breathing (Obviously). Second we get glucose from eating foods.
The pharynx is where the air and food channels intersect. Air may enter the pharynx via breathing, which always occurs through the mouth or nose. The transition from an airway to a food channel occurs during swallowing. Thus, option D is correct.
What is the importance of cellular respiration in eating food?The oxygen you breathe is used by your body cells to convert the food you consume into energy. It is known as cellular respiration.
The cell uses oxygen during cellular respiration to metabolize sugar. The energy your body need is created when sugar is broken down.
That implies that you must use more effort to breathe in enough of it when eating. Your lungs and diaphragm are crammed by the food in your stomach, which makes it tougher for them to do their jobs.
Therefore, breathing in air and eating food activities provide the reactants for cellular respiration.
Learn more about cellular respiration here:
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all of the waters of the earth form a biosphere
A.true
B.false
Answer:
No
Explanation:
About 4% of the water is in the Antarctic as ice and is not bio available.
What is the relationship between the Gulf Stream and the global conveyor belt?
Answer:
The ocean conveyor gets its “start” in the Norwegian Sea, where warm water from the Gulf Stream heats the atmosphere in the cold northern latitudes. This loss of heat to the atmosphere makes the water cooler and denser, causing it to sink to the bottom of the ocean.
Explanation:
How many more phases occur during meiosis than during mitosis?
Answer: 4 more phases
Explanation:
state two distinguishing features of all prokaryotes
Answer:
lack of organized nucleus
cell wall act as an extra layer protection
Write the complimentary DNA strand for: ATGGCC
Answer:
TACCGG
Explanation:
Recall that in DNA, there are two pairs, A goes with T and G goes with C, therefore the complimentary strand for ATGGCC is TACCGG.
the phosphate group are the polar part of phospholipid because they are what??
Answer:
A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.”
Food web:
1. Hawk
2. snake
3. mouse
4.grass
suppose 10,000 units of energy are available at the level of the grasses. What is the total number of energy units lost by the time the energy reaches the hawk? How did you get your answer?
(Please help me!)
GREETINGS!
10 units of energy because in food chain the energy is lost and this energy loss is 90% at each trophic level so only 10% of energy is passed soo if grass has 10000 energy units mouse will have 1000, snake will have 100 and then hawk will have only 10 units
HOPE IT HELPS YOU
In a population of deer in one year, six deer were born, five deer emigrated, three deer were killed by predators, and one deer immigrated. What can be determined from this information? Population growth is decreasing. Population growth is increasing. Population growth stays the same. Population reaches the carrying capacity.
Answer:
The correct answer is - Population growth is decreasing.
Explanation:
In the given question, the number of deers increases in the deer population is:
born: 6
Immigrated: 1
Total 7
7 deers are increased in the population this year. While the deers leave the population is:
Killed: 3
emigrated: 5
Total 8
So the population growth is: increase - decrease in population
= 7-8
= - 1
The value is negative that suggests that there is a decrease in population growth of the deer in a given year.
Answer:
The answer is A) Population growth is decreasing
Explanation:
Correct on edge 2021
Name
week!
1. Which atmospheric condition will cause the greatest amount of evaporation from the surface of a lake?
(1) moist, cold, windy (2) calm, moist, hot (3) calm, dry, cold
(4) dry, hot, windy
Which of the following life processes has evolved and been conserved through nearly every modern organism?
a. meisos
b. embryological development
c. metabolism
d. sexual reproduction
Answer:
C. Metabolism
Explanation:
Medical researchers often test medicines on patients who have given informed consent for the tests. The researchers divide the patients into two groups. One group is given the medicine. The second group is given a harmless substitute such as sugar pills. Neither the patients nor the researchers know which patients have received the medicine and which have received the substitute.
Answer:
The question is incomplete, below is the completed question:
Medical researchers often test medicines on patients who have given informed consent for the tests. The researchers divide the patients into two groups. One group is given the medicine. The second group is given a harmless substitute such as sugar pills. Neither the patients nor the researchers know which patients have received the medicine and which have received the substitute. What is the purpose of such a procedure?
to increase accuracy
to increase precision
to decrease bias
to decrease patient safety
Answer:
The correct answer is:
to decrease bias
Explanation:
This kind of experimental setup where a group of participant is given a non-medical treatment is known as a double-blinded placebo experiment. The principle of the use of a placebo is to reduce biases. Biases are influences that may affect the result of an experiment that does not arise from the effect of the treatment itself, but from some external factor. The researcher and the subject do not know which treatment is a 'sham', and which treatment is the real treatment, it helps to make approach neutral and rules out any effect of manipulations that may affect the result as a result of such knowledge.
Answer:
to decrease bias
Explanation: