Victor has been studying the vascular systems of plants. He wanted to find out if food coloring would travel up the stalk of celery faster if the temperature of the water increased. Victor set up his experiment with three cups of colored water at different temperatures, three equal sized celery stalks, and a stopwatch. Cup A was filled with colored water at 21 C. Cup B was filled with cold colored water at 4 C, and Cup C was filled with warm colored water at 30 C. One celery stalk was placed in each cup at the same time. Victor timed how long it took the colored water to travel to the leaves at the top of the celery stalk. He measured the time in minutes. What is the independent variable

Answers

Answer 1

Answer:

temperature

Explanation:

The independent variable would be the colored water at different temperatures.

The independent variables are changeable or controllable variables supplied directly by researchers in the course of experiments. They produce effects on the dependent variable and are thus referred to as the 'cause' variable. The dependent variables are referred to as the 'effect' variables because their values vary based on that of the independent variables.

In this case, the only controlled variable of all the variables supplied by Victor is the temperature of the colored water. Changing the temperature of the colored water is expected to have effects on the time it will take for the colored water to travel to up the stalk of celery. Hence, the temperature is considered as the independent variable while the time it takes for the colored water to travel to the leave would be the dependent variable.


Related Questions

Sound is created by our vocal cord due to
(a) Air in lungs
(b) Vibration in lungs
(c) Vibration in throat
(d) none of these

Answers

Answer:

c

Explanation:

for me Vibration in throat

Observations:
In this photo I can
observe...
(delete this and start
typing here. See below
for ideas about what to
write about)

Answers

Answer:

In this photo, one can observe the big mountains, the clear blue sky, the sand which covers the ground, the path down the middle and the variety of dry, green plants.

Explanation:

^

Hereditary information is stored inside the?

A. Nucleus,which have ribosomes that contain genes

B. Nucleus, which has DNA that contains water

C. Nucleus,which chromosomes that contain genes

D. Nucleus, which has genes that contain many chromosomes

Please help

Answers

the answer is D Nucleus, which has genes that contain many chromosomes

Hereditary information is stored inside the nucleus, which has chromosomes that contain genes.

What is hereditary?"Transmission of character or traits from parent to offspring is called hereditary." What is a nucleus?It is the center of a cell that controls and regulates all the activities in a cell.What are chromosomes?"Chromosomes are thread-like structures located inside the nucleus of animal and plant cells."It is a long DNA molecule.What are genes?"A gene is the basic physical and functional unit of heredity."It is present in chromosomes.

Hence, the correct option is C. Nucleus, which has chromosomes that contain genes.

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Light behaves in specific ways. It can be reflected, refracted, or absorbed, and under certain conditions, run into different kinds of interference. Which explanation best describes why light is refracted as it enters water?


A. The light bends when it enters water due to its reflection.

B. The speed of light remains the same as it moves from air to water, causing the light to reflect.

C. The speed of light increases when it enters a different medium, but it doesn't bend.

D. The speed of light changes as it moves from air to water, causing the light to bend.

Answers

Answer:

D

Explanation:

Refraction is generally defined as the change in the direction of a wave as it travels from one medium to another. Light is a form of wave and light refraction is caused by a change in the speed of light as it moves from air to water, causing the light to bend in the process. The medium of travelling has to be transparent.

The change in the speed and direction is due to the variability in the refractive index of media. Light travels faster as it moves from a medium of higher refractive index to a medium of lower refractive index and vice versa.

The correct option is D.

5.2 learning the key term answer

Answers

What’s the question your asking ?

Other than shape, what characteristics are used to identify the various bacterial species?

Answers

Answer:

Explanation:

One major characteristic used to identify bacterial species is by Gram staining. This makes bacteria to be classified into two broad classes; Gram positive bacteria (appear purple after stain) and Gram negative bacteria (appear pink after stain).

Another characteristic used is the presence or absence of capsule.

Other characteristics include there motility (which can be due to the presence of flagella), bonding tendency (which can be individually or in pairs) and also pathogenic bacteria can be classified as intracellular or extracellular bacteria.

Which distribution pattern in species can be considered the most easily measurable

Answers

Answer:

local endemics

Explanation:

The most common distribution pattern in species can be considered by their geographical distribution, as different species get distributed as per their climate and the different regions that suit them the most.

What is the significance of the geographical distribution?

It is significant because they differ in different parts of the world and provide suitable climatic and other environmental conditions for various animals, plants, and microorganisms to live and evolve. Its significance can be seen in the difference between the life forms in the temperate area and those in the Antarctic area.

Hence, the most common distribution pattern in species can be considered by their geographical distribution, as different species get distributed as per their climate and the different regions that suit them the most.

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An aquarium with a glass lid is an example of an isolated system.

true
false

Answers

Answer:

The answer is false!

Explanation:

I took the K12 science quiz.  I hope this helps! Have a blessed day! :)

The statement "An aquarium with a glass lid is an example of an isolated system" is false as light, air, and heat can transfer through the glass lid.

What is an aquarium?

An aquarium is an artificial place that is made for putting fish and other water animals in houses buildings and other places. Aquariums are made up of glass so can we, so we can see the fish's aquarium also have oxygen pumps the water also changed in the aquarium from time to time and. The aquarium is kind of decorative.

Aquariums are made up of glass, and they are open from the top so that fish can get air.

An aquarium is not an isolated system as light year and heat can transfer through the top and fishes are living organisms that need an open system to breathe and live.

Therefore, the statement is false.

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HOW MANY TOTAL CALUIM ATOMS ARE IN 3CaCI2 I WILL MARK BRAINEIST

Answers

Answer:

There are three atoms in CaCl2 (calcium chloride) - one calcium atom and two chlorine atoms. It might be argued that there are ions inside the molecule instead of atoms. In that case there is one calcium ion and two chlorine ions.

There are 3 calcium atoms

How is cellular respiration
connected to our muscular
system?

Answers

Answer:

Cellular respiration is a key role in returning the muscles to normal after exercise, converting the excess pyruvate into ATP and regenerating the stores of ATP, phosphocreatine, and glycogen in the muscle that are required for more rapid contractions.

Hope that helps!

Man made sources of green House Gases

A
Factory emmissions

B
all of them

C
Chlorofloro Carbons

D
Automobile emmissions

Answers

Answer: C. Chlorofluoro Carbons.

in which two steps of cellular respiration is the co2 produced

Answers

Answer:The only difference between a molecule of a compound and a molecule of an element is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.

Explanation:hope this helps

PLEASE HELP!!!!!!!!!!!!!!!!!!!!

Which statement describes competition within a population?

Several killer whales migrate to a new location.
Two male sea horses fight to win over a female.
Several elk travel together to find and share water.
Different kinds of garden plants take in water from the soil.

Answers

Answer:

I think its B if I'm wrong I'm sorry

Two male sea horses fight to win over a female describes the competition within a population. So, the correct option is B.

What is Competition?

Competition is defined as an interaction between organisms or species in which both require a resource in limited supply that reduces the fitness of both organisms because the presence of one of the organisms always consumes the available resource which reduces the quantity.

Competition is defined as the fight between different organisms by limited resources. Some examples of interspecific competition between lions and leopards that vie for the same prey and interspecific competition between rice fields with weeds growing in the field, two male seahorses fighting to win over a female.

Thus, the correct option is B.

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2. Which of the following does NOT contribute to globalization?
a) Countries protect their trade positions by increasing tariffs on foreign imports
b) Technological advances allow for decreased communications costs
c) Containerization makes international shipping inexpensive
d) Countries ratify new free trade agreements​

Answers

C) containerization makes international shipping expensive

three sentences about the role termites play in modifying the natural proses of water carbon or nitrogen cycle

Answers

Answer:  

-help to store water in the soil (by increasing infiltration) rather than evaporating (enabling the plants survive long periods of drought)

-mix inorganic and organic compounds in the soil (and thus it can better resist the process of erosion)

-termite’s feces help to prevent erosion  

Explanation:

Decomposers break down complex organic matter into basic compounds containing nitrogen, phosphorus, and calcium, generating water (H2O) and carbon dioxide (CO2) during this process. Termites are critical in an ecosystem because they are decomposers, i.e., they are recyclers that break down organic material into nutrient-rich soil. For example, termites digest the cellulose from dead plants (due to the presence of specific bacteria in their digestive tract), thus allowing the carbon cycle.

When organisms break the bonds of organic compounds the organisms can

Answers

Answer:

When organisms break the bonds of organic compounds the organisms can gain energy in the form of ATP.

Explanation:

The football team has a total of 25 jerseys . There are 5 mediums-sized jerseys . What percent of the Jerseys are médium-sized Jersey?

Answers

Answer:

20% or 0.2

Explanation:

if u divide 5 by 25, u get 0.2, which in decimal form is 20%

PLEASE HELP!

1. How does a clock and its internal and intricate mechanical parts make up a system(Explain)


2. Is it a living or nonliving system? (Explain)


3. How may it support a living system? (Explain)


4. Therefore what is an good example of a definition of a system?

Answers

Answer:

1. A clock with internal mechanical parts comprises a system because it is a combination of various parts that a heterogeneous in nature and function working together to achieve one end - indicating the time accurately.

Some mechanical clocks comprise of at least 10 parts namely:

Gear train: This component alone is a sub-system that comprises of at least 8 parts. These parts are broadly classified into wheels, pinions, and barrels.Main SpringPalletEscapement Escapement WheelBarrell Barrell WheelBalance Spring etc

2. A clock is a non-living system.

Living systems have certain characteristics. Some of them are:

Stimuli: Response to the environmentGrowth and development: The are able to increase in size and dimensionsHomeostasis: this is the capability of self-regulation regardless of external conditions such as temperature and pressure.   etc

3. A cannot support a living system. It can however help a human being (which is essentially a combination of various systems) to tell the time.

4. a system is a combination of heterogeneous parts that work in unison to form a whole complex entity that can perform one or more functions.

Cheers

Which is the largest prefix? Meter- Centi- Milli- Kilo-

Answers

Answer:

kilo is the largest

Explanation:

kilo- is the largest

Use your own observations and real-life experiences about your brain​

Answers

Answer:

our life experience changes our brain so if u fall off a bike ur brain will train u and send signals to ur body ur brain also knows when its forgetting something but doesn't know what its forgetting

Explanation:

The knee ________.
a. is completely enclosed by a strong articular capsule
b. is a multiaxial joint
c. has ligaments present inside as well as surrounding the articular capsule
d. is the simplest joint in the body

Answers

Answer:

The correct answer is: C) has ligaments present inside as well as surrounding the articular capsule.

Explanation:

The knee joint is a hinge (ginglymus) type synovial joint that is formed by three different bones: the femur, the tibia, and the patella.

Given the nature of the hinge joint, it should only allow flexion and extension, but it also grants a small degree of internal and external rotation. For this reason, the knee joint cannot be considered a multiaxial joint, since it only fully moves in one axis and slightly moves in a second one (this is why most people consider the knee joint a uniaxial joint, but some others say it is actually a biaxial one).

The knee joint isn't completely enclosed by a strong articular capsule. The knee joint is rather thin and it contains the patella, menisci, bursae, and ligaments of the knee.

The knee is not the simplest joint in the body. It is formed by three bones and there's also the menisci, which are fibrocartilaginous structures that help increase the stability of the joint and act as shock absorbers as well.

The knee does have ligaments both inside and outside the articular capsule. The intracapsular ligaments are two cruciate ligaments (one anterior and one posterior), which hold the tibia in place; the transverse ligament that connects both menisci; and the posterior and anterior meniscofemoral ligaments. The extracapsular ligaments are the patellar ligaments (connects the patella to the tibia), the two collateral ligaments (medial and fibular, one on each side of the knee, connecting the femur to the tibia and to the fibula, respectively), and the anterolateral ligament.

An _____
is a head and throat specialist.

Answers

Answer:

Otolaryngologists

Explanation:

Which compound is a hydrocarbon?
A. C2H6
B.CO2
C. C6H12O6
D. H2O

Answers

A. C2H6 I am positive it’s a

which substance compose the backbone of DNA

Answers

Answer:

phosphate and deoxyribose

Explanation:

Answer:

Phosphates and sugars

Explanation:

Whats the flow of matter in DESSERT food web?? HELP

Answers

The Sahara desert food chain begins with the plants. There are many kinds of plants in the desert. They are the Date Palms, Cacti, Thorn Acacia, Creosote Bush, Sage Brush, Desert Milkweed, Desert Willow, and Desert Tobacco. The plants are producers as they are the source of food for many herbivores.

Which three of these development were major effector european colonization in africa

Answers

Answer:

More advanced medicine

Answer:

improvement in transportation and education systems. disregard for existing political or ethnic boundaries. promotion of free trade across countries.

Explanation:

PLEASE HELP I HAS 5 MINUTES

Answers

Answer:

its ethier a or c

Explanation:

Impetigo.

Explanation....

It cannot be acne since this occurs when you are more in the teens and is not yellow, eliminate the last one.

It cannot be ringworm because they are worms and not apperanced by yellow crust, eliminate the second one.

It cannot be eczema since this is red not yellow, eliminate the first one.

Impetigo appears as yellow crust. Therefore, your answer is the third one, Impetigo.

The hydrogen used to produce ATP in the light reactions of photosynthesis comes from ___.
a. Splitting water
b. Carbon fixation
c. Movement of hydrogen ions through the membrane
d. The burning of sugar molecules

Answers

Answer:

c.

Explanation:

The process of making bread is an example of:
1) Cellular respiration
2) Alcoholic Fermentation
3) Aerobic Fermentation
4) Lactic Acid Fermentation

Answers

I think it’s number 2 but I could be wrong, I know 1,3, and maybe 4 are in living things
Alcoholic fermentation

Largest layer of earth that makes up most of the earths mass. A:crust B:mantle. C:outer core. B:inner core

Answers

Answer:

Mantle is the answer

Explanation:

The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the mantle is the thickest layer, while the crust is the thinnest layer.

I am taking the same class rn!!! whos your teacher??

Answer:

b-MANTLE

Explanation:

The mantle is the mostly-solid bulk of Earth's interior. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth's total volume.

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One of several locations along a main artery that supplies blood to a given limb of the body A. Butter- proteinB. Pasta- fatC. Yogurt- proteinD. Fish- carbohydrate Distance Versus Displacement: Which one will always be the shortest out of the 2? Sarah arrives at the bus station at 8:25 and can catch either bus A or B. How long does she wait for the next bus? Bus A runs every 6 mins Bus B runs every 8 mins What bus can she catch and what time? sum n=3 ^ infty (2n+5)find the series shown What is 7/8 x 4/5 divided by 7/20 Help needed ASAP will give brainliest AND 5 STARS RATE Michael mixes two chemicals together in a beaker. The chemicals change color, and the beaker heats up quickly. What kind of change most likely occurred? Which of the following was not part of Sam Houstons solution to the Texas depression in the late 1830s? a. loan from the U.S. government b. sale of private lands c. enforce customs duties d. collect taxes Please select the best answer from the choices provided A B C D Carlos buys a box of frozen flavored ice sticks. 2/5 of the ice sticks are blue raspberry. Of the remaining ice sticks, 1/3 are grape, and the rest are cherry. If there are 48 blue raspberry and cherry flavored ice sticks altogether, how many ice sticks total are in the box? Six students are working to simplify the expression shown 4y+13x-5+6y-x give one example of how the geosphere and the atmosphere interact in the carbon cycle PLEASE HELP IM GIVING OUT 30 POINTS!!!!Choose one of the animals listed on the page, and write a brief description of its characteristics. Be sure to discuss any ways (The animal is The Fennec Fox) Which of the following is NOT made with petroleum (oil)?N O cooking oilmedicineplasticO cleansers Read the quotation from "To My Dear Loving Husband.""I prize thy love more than whole mines of gold,Or all the riches that the East doth hold."These lines contain an example ofsimile.metaphor.hyperbole.synecdoche. Sharon went bowling with her friends. She paid $3 to renther shoes and then $3.75 for each game (x) of bowling. Shespent a total of $18. How many games did she bowl?WRITE YOUR EQUATION:SOLVE:SOLUTION: Dr. Bob Jackson owns a parcel of land that a local farmer has offered to rent from Dr. Bob for the next 10 years. The farmer has offered to pay $20,000 today or an annuity of $3,200 at the end of each of the next 10 years. Which pay-ment method should Dr. Jackson accept if his required rate of return is 10 percent Help me with this question pleasee PLEASE HELP!!! Chloe is working two summer jobs, landscaping and clearing tables. She must work no less than 12 hours altogether between both jobs in a given week. Write an inequality that would represent the possible values for the number of hours landscaping, l and the number of hours clearing tables, c, that Chloe can work in a given week. how many times 92 go in too 100 Read this passage from Dragonwings by Laurence Yep.The demon was a big, cheerful-looking demon with a bland, round face. He eyed father. "I dunno, John." Many demons called Tang men John because, they insisted, they never could get the hang of our real names. "You know anything about horselesses?""Some," Father said. Truth to tell, he had never handled a horseless carriage in his life, though he had a book on them and cut out articles whenever they appeared in the demon magazines and newspapers. That was the extent of Father's knowledge. But to know facts is nothing. He had an intuitive feeling for what made the horseless carriages tick. He looked around inside the engine for about ten minutes and then wiped his face absentmindedly, so that the grease stained his cheek. He did not even notice.Which quote from this passage is an example of indirect characterization?The demon was a big, cheerful-looking demon with a bland, round face.Many demons called Tang men John because, they insisted, they never could get the hang of our real names.He had an intuitive feeling for what made the horseless carriages tick.He looked around inside the engine for about ten minutes and then wiped his face absentmindedly, so that the grease stained his cheek.