Which characteristic do scientists first consider when classifying cells aseither eukaryotic or prokaryotic?o A a membrane-bound nucleus, which is exclusive to eukaryotic cellso B. a membrane-bound nucleus, which is exclusive to prokaryotic cellso C. chloroplasts, which are exclusive to eukaryotic cellso D. chloroplasts, which are exclusive to prokaryotic cells

Answers

Answer 1

Answer: A is the correct answer, eukaryotic cells have membrane-bound nucleus, prokaryotic cells do not.

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The "Father of Modern Taxonomy" is _____.

Answers

The person known as "father of Modern Taxonomy" is Carl Linnaeus, a Swed living in 18th century, who was a botanist, zoologist, and physician and who had laid the foundations for the modern naming scheme in biology.

Why is a controlled experiment important

Answers

A controlled experiment is crucial for isolating the effects of a single variable, making it easier to interpret the results.

importance of controlled experiment

All variables save the one being researched (the independent variable) are held constant in a controlled experiment. This enables researchers to draw more precise conclusions regarding the link between independent and dependent variables.

It would be difficult to identify whether the outcomes were attributable to the variable being examined or some other factor without control groups and uniform circumstances. Controlled experiments improve the reliability and validity of data obtained, laying the groundwork for scientific ideas and applications.

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Question 2Change cannot occur without it
Molecule
0
Energy
0
Organism
0
Chemical reaction
0
Matter
0
Cellular respiration

Answers

Answer:

chemical reaction

Explanation:

duhhh

In which organelle does the chemical process of photosynthesis occur? mitochondria nucleus
chloroplast
endoplasmic
reticulum

Answers

chloroplast, in the plant cell the chloroplast is where photosynthesis takes place

I believe the process occurs in the Chloroplast

In the study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion. Which conclusion is that?

Answers

Answer:

Cancer is the genetic order than can be caused by different reasons but one of the main is "MUTATION IN GENES"

Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread to other parts of the body.

cancer cells lack contact inhibition meaning meaning that in normal cells when they come in to contact with other cells they stop reproducing only cancer cells do not. They just keep reproducing and growing destroying everything in their path. An example of this is a tumor.

HELP!!!! FAST!!!! 20 POINTS!!!! You are a traffic accident investigator. You have arrived at the scene of an accident. Two trucks of equalmass (3,000 kg each) were involved in a rear-end accident at a stop sign. Here is what you know:
• Truck 1 started from rest at the top of a 22-meter hill and coasted toward the intersection.
.
Truck 2 was on a flat stretch of road at the bottom of the hill directly in front of Truck 1.
At the bottom of the hill, Truck 1 was going 20 m/s; Truck 2 was going 35 m/s.
.
There were no skid marks left by Truck 2. The collision occurred at the stop sign where Truck 2 had
stopped
• After the collision, both trucks moved together in the same direction at 10 m/s before slowly rolling
to a stop.
You must now push Truck 2, using 1,000 N of force, 8 meters off to the side of the road so no one
else gets hurt.
1. What was the potential energy of Truck 1 at the top of the hill? 2. What was the kinetic energy of each truck before the began braking? 3. A. How much energy did truck 1 lose from the top to the bottom of the hill? B. Where do you suppose that energy went?

Answers

Answer:

1) Kinetic energy of the truck 1 is 600,000 joules.

Kinetic energy of the truck 2 is 1,837,500 joules.

2 a)Potential energy of truck 1 is 646,800 Joules.

b) Energy lose by the truck 1 just got converted into heat and sound energy during the collision.

Step-by-step explanation:

Mass of the truck 1 and truck 2,m = 3000 kg

Velocity of the truck 1, = = 20 m./s

Velocity of the truck 2, = 35 m./s

1. Kinetic energy of the truck 1:

Kinetic energy of the truck 2:

2.a) Energy loose by the truck 1:

Initial height of the truck on the hill = 22 m

At that height potential energy will be maximum:

Potential energy of truck 1 at that height =

b) Energy lose by the truck 1 just got converted into heat and sound energy during the collision.

Final answer:

The potential energy of Truck 1 at the top of the hill is 646,800 J. The kinetic energy of each truck before they began braking is 600,000 J for Truck 1 and 3,712,500 J for Truck 2. The energy lost by Truck 1 from the top to the bottom of the hill is 646,800 J, which is converted into kinetic energy and transferred to Truck 2 during the collision.

Explanation:

1. The potential energy of Truck 1 at the top of the hill can be calculated using the formula PE = mgh, where m is the mass of the truck, g is the acceleration due to gravity, and h is the height of the hill. Plugging in the values, PE = (3,000 kg)(9.8 m/s^2)(22 m) = 646,800 J.

2. The kinetic energy of each truck before they began braking can be calculated using the formula KE = 0.5mv^2, where m is the mass of the truck and v is the velocity. For Truck 1, KE = (0.5)(3,000 kg)(20 m/s)^2 = 600,000 J. For Truck 2, KE = (0.5)(3,000 kg)(35 m/s)^2 = 3,712,500 J.

3.A. The energy that Truck 1 lost from the top to the bottom of the hill can be calculated by subtracting the potential energy at the top from the kinetic energy at the bottom. Therefore, energy lost = PE(top) - KE(bottom) = 646,800 J - 0 J = 646,800 J.

3.B. The energy is converted into kinetic energy and transferred to Truck 2 when they collide. The collision between the two trucks results in an increase in kinetic energy for Truck 2 and a decrease in kinetic energy for Truck 1.

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