Evidence 2 - Unknown Substance Investigation A group of scientists is given a sample of an unknown substance. They are asked to gather evidence to determine whether the substance is living or nonliving. The students take a small sample of the substance and observe it using a microscope. Part A: State and define two properties of life present in the substance that could be observed to indicate whether it is living or nonliving.

Answers

Answer 1

Answer:

Water , Oxygen

Explanation:

Explain why


Related Questions

What are the similarities and differences between the structures and functions of viruses and cells?

Answers

Answer: Cells are the basic units of life, and Viruses are non-living infectious particles, much smaller than a cell, and need a living host to reproduce

Explanation:

2. Four students raced toy cars on a track. The mass and the acceleration of each car is
recorded in the table below.
Toy Cars
Toy Car
Mass (kg)
Acceleration (m/s)
1
0.19
0.15
2
2.0
3.0
1.5
3
0.25
0.21
4
2.5
Which toy car had the greatest applied force?
A 1
B 2.
с 3
D4

Answers

Answer:

the answer is 4

Explanation:

i dont know how to explain it but i took the test and it was right.

The car with the greatest applied force is : ( D ) Car 4

Given that :

Force applied is calculated as : Mass * acceleration

Calculating the force applied on each car

For Toy car 1

mass = 0.19

acceleration = 0.15

Force = 0.19 * 0.15 = 0.0285 N

For Toy car 2

mass = 2.0

acceleration = 1.5

Force = 2 * 1.5 = 3 N

For Toy car 3

mass = 0.25

acceleration = 0.21

Force = 0.25 * 0.21 = 0.0525 N

For Toy car 4

mass = 2.5

acceleration = 3

Force = 2.5 * 3 = 7.5 N

From the answers above the car with the greatest applied force is car 4 with a force of 7.5 N

Hence we can conclude that The car with the greatest applied force is : ( D ) Car 4

Learn more about applied force : https://brainly.com/question/25545050


2.Which of these best describes an organism's ability to maintain the
constant internal conditions necessary for life?
A. Homeostasis
B. Adaptation
C. Stability
D. Reproduction

Answers

Answer:a

Explanation:

Which describes the correct procedure when converting a number from scientific notation to standard notation if the power of 10 is -10
A). Move the decimal point to the left
B). Move the decimal point to the right
C). Add 20 to the number
D). Subtract 20 from the number

Answers

Answer:  The answer is B.

Answer:

The answer is B

Explanation:

I took it on EDGE and got it right

Hope this helps!!!

What is energy and how does it change from one form to another? (Give an example)

Answers

Answer:

Energy is a property of matter. example what we eat has energy. Apples have energy.

Explanation:

Which role of bacteria is the most beneficial in terms of maintaining the health of the plant populations in our ecosystems?

Bacteria serving as a major food source for secondary consumers.

Bacteria aiding in digestion in the intestines of animals.

Bacteria producing oxygen for the oxygenation of the earth's atmosphere.

Bacteria decomposing dead materials which returns nutrients to the soil.

Answers

Answer: Bacteria producing oxygen for the oxygenation of the earth's atmosphere.

Explanation: ????????? NOT FOR SURE

Which method of communication provides the fastest feedback for a researcher?

Answers

in sociology its quick survey

What is the relationship between the geographic location and genes of lion prides in Africa?

Answers

Answer:

well all loins i think live in sub-Saharan Africa well currently lions live in Asia and Africa

hope this helps also i like your profile pic   ヾ(≧▽≦*)o

A carbohydrate found in bread and pasta:

Answers

If you’re trying to figure out if it’s true or false it’s true

Answer:

yes

Explanation:

yes they are found in bread and pasta

Most fad diets focus on restricting certain types of food and nutrients. What do you think would happen if someone ate an extremely low-protein diet without the approval of a doctor? What side effects might the person experience?

Answers

Answer:

Eating a diet of low levels of protein could leave you to development a condition called edema, which causes swelling in your legs and feet from the buildup of fluids. Protein plays an essential role in maintaining salt and water inside your blood vessels and ensuring fluid does it make its way into the tissues. Hajima can cause stiffness, difficulty walking, increasingly painful swelling.

Explanation:

Answer:

Here’s one possible answer:

Protein builds and repairs body tissues. So, a person who eats a low-protein diet might experience symptoms such as slow wound healing. This person might also start losing muscle mass because the body uses skeletal muscle to make protein when needed.

Explanation:

What are three examples of carbohydrates?

Answers

Answer:

Glucose, Galactose, Malatose

Explanation:

Fructose, Starch, Glucose

A group of students is setting up a test to see whether earthworms prefer rough or smooth surfaces which type of investigation is the group doing A.Comparative B. Descriptive. C. Controlled. D. Experimental

Answers

Answer: The answer is A. Comparative

Explanation: The photo shows two different types of soil with the same type of worm. Therefore this it a comparative experiment. Trust me I got this question correct.

Answer:

its actually experimental, i put in comparative and it was wrong

Explanation:

How much des temperature increase for every 25
kilometers down into the Earth?

Answers

Answer:

The temperature goes up to 625°C every 25 kilometers.

Explanation:

For every kilometer the temperature rises 25°C

What is the effect of the biogeochemical cycles

Answers

Answer:

the answer is B for those looking.

Explain- the 8 characteristics that are required for life

Answers

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these eight characteristics serve to define life.

Explanation:

Sensitivity or Response to Stimuli

Organisms can respond to diverse stimuli. For example, plants can grow toward a source of light, climb on fences and walls, or respond to touch. Even tiny bacteria can move toward or away from chemicals (a process called chemotaxis) or light (phototaxis). Movement toward a stimulus is considered a positive response, while movement away from a stimulus is considered a negative response.

Reproduction

Single-celled organisms reproduce by first duplicating their DNA. They then divide it equally as the cell prepares to divide to form two new cells. Multicellular organisms often produce specialized reproductive germline cells that will form new individuals. When reproduction occurs, genes containing DNA are passed along to an organism’s offspring. These genes ensure that the offspring will belong to the same species and will have similar characteristics, such as size and shape.

Growth and Development

All organisms grow and develop following specific instructions coded for by their genes. These genes provide instructions that will direct cellular growth and development, ensuring that a species’ young will grow up to exhibit many of the same characteristics as its parents.

Regulation

Even the smallest organisms are complex and require multiple regulatory mechanisms to coordinate internal functions, respond to stimuli, and cope with environmental stresses. Two examples of internal functions regulated in an organism are nutrient transport and blood flow. Organs (groups of tissues working together) perform specific functions, such as carrying oxygen throughout the body, removing wastes, delivering nutrients to every cell, and cooling the body.

Homeostasis

In order to function properly, cells need to have appropriate conditions such as proper temperature, pH, and appropriate concentration of diverse chemicals. These conditions may, however, change from one moment to the next. Organisms are able to maintain internal conditions within a narrow range almost constantly, despite environmental changes, through homeostasis (literally, “steady state”)—the ability of an organism to maintain constant internal conditions. For example, an organism needs to regulate body temperature through a process known as thermoregulation. Organisms that live in cold climates, such as the polar bear, have body structures that help them withstand low temperatures and conserve body heat. Structures that aid in this type of insulation include fur, feathers, blubber, and fat. In hot climates, organisms have methods (such as perspiration in humans or panting in dogs) that help them to shed excess body heat.

Energy Processing

All organisms use a source of energy for their metabolic activities. Some organisms capture energy from the sun and convert it into chemical energy in food; others use chemical energy in molecules they take in as food.

Evolution

As a population of organisms interacts with the environment, individuals with traits that contribute to reproduction and survival in that particular environment will leave more offspring. Over time those advantageous traits (called adaptations ) will become more common in the population. This process, change over time, is called evolution, and it is one of the processes that explain the diverse species seen in biology. Adaptations help organisms survive in their ecological niches, and adaptive traits may be structural, behavioral, or physiological; as such, adaptations frequently involve other properties of organisms such as homeostasis, reproduction, and growth and development.

HELP ME!!
What is cancer?
addition of new cells to replace damaged cells
DNA replication
cellular death
uncontrolled cell division

Answers

Answer: uncontrolled cell division

Explanation: uncontrolled cell division forms a cancer turmor which can kill.

How does a Evolution start

Answers

Answer with change in the environment organisms change to adapt to the change in of the enviroment .

A diseased cell is no longer able to produce proteins. Which cell structure is most likely malfunctioning?

Answers

Answer:

Ribosome structure

Explanation:

Answer:

THE RIBOSOMAL RIBONUCLEIC ACID WILL MALFUNCTION

Explanation:

THE rRNA IS WHAT PODUCES THE PRITEINS

True or false? Objects in the universe are slowly moving apart as the universe
changes over time.
True
False

Answers

Answer:

True

Explanation:

The expanding universe theory was developed from the observed redshifts of celestial bodies, that the space between galaxies is expanding so that they appear to recede from us at velocities that increase with their distance

Scientific knowledge is based on all of these except
A)
rigorous testing
B)
small sample sizes.
publication and peer review
D)
acceptance in the scientific community

Answers

Answer:

B) small sample sizes

Explanation:

I did it on usa test prep and got it right

Answer:

B

Explanation:

Small sample sizes

help me please, i just need to know the answer

Answers

Answer:

The answer is D...........

Part A: List the 9 characteristics of life.

Part B: Choose 3 of the characteristics of life above. Give an example of each that describes how that characteristic contributes to the organism's survival.

Answers

Answer:growth excretion, responsiveness, movement ,reproduction, growth i got six  sorry i can't remember

Explanation:

what happens if you eat to much food

Answers

Answer:

You chunk it up.

Explanation:

Answer

Throw up

Explanation:

Ur stomach will not feel good so you will most likely throw up.

CAN SOMEONE HELP PLEASE

Answers

Alternative energy is better than traditional sources of energy because it’s better for the environment. Alternative energy creates less pollution opposed to traditional energy creates more pollution.

How did endosymbiosis impact the structural differences between bacteria, animals, plants and fungi?

Answers

Answer:DNA, RNA, Ribosomes and Protein Synthesis

This provided the first substantial evidence for the endosymbiosis hypothesis. It was also determined that mitochondria and chloroplasts divide independently of the cell they live in.

Explanation:

What role did endosymbiosis play in the evolution of eukaryotes? Endosymbiosis led to the evolution of eukaryotic cells with mitochondria and chloroplasts. This kind of natural selection led to the evolution of eukaryotic cells and the plants and animals we see today.

Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of the decomposition are hydrogen (H2) and oxygen (O2).

Which of these changes to the cell would cause the greatest reduction in the activity of catalase?


A)
a decrease in the concentration of hydrogen and oxygen

B)
an increase in the concentration of hydrogen peroxide

C)
an increase or decrease in pH beyond normal range

D)
a return of pH to the normal range

Answers

Answer:

B an increase in the concentration of hydrogen peroxide.

Explanation:

15points+brainliest!!! please help it’s due tonight :(!!!

Answers

Answer:

Hypothesis: If the fish which eats food exposed to microwaves, then the fish will become smarter and be able to swim faster.

Control group: the fish, the maze

independent group: the type of food which is being given

Dependent group: the time the fish is able to swim through the maze

Conclusion: Although the results did show that both fishes had some difference between their before and after, you can see a greater difference of time in the group of fishes which had ate the special food.

Hope this helps.

Examples of carbohydrates are?

Answers

Answer:

Sugar, starch, and gluclose.

Explanation:

A student wants to test the effect of different amounts of caffeine on the heart rate of dogs. Describe the experimental groups in this experiment. What is the dependent variable? type of dogs amount of caffeine the heart rate number of dogs

Answers

Answer:

Experimental groups: type of dogs

Dependent variable: hearth rate

Independent variable: the amount of caffeine  

Explanation:

The dependent variable is the variable being measured or tested in a given study, while the independent variable isn't changed by the other variables. In this case, the heart rate is dependent on the amount of caffeine, which is then the independent variable. The experimental groups are the groups exposed to the independent variable.

BRAINLIEST!! Are Zebras mammals?

Answers

Answer:

yehee boi

Explanation:

it is a warm blooded vertebrate

Answer:

A zebra is a mammal. Zebras share the genus with horses. With their distinctive black-and-white stripes, zebras are among the most recognizable mammals.

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