Mrs. Lewis set up a lab for her biology students using a culture of the small crustacean Daphnia, obtained from a pond that was 20°C. The students are to investigate the effect temperature has on Daphnia. The students will observe the crustacean’s heartbeat under the microscope, at different temperatures, and count the number of heartbeats per sec. What is the independent variable in this experiment?
5 points

Answers

Answer 1

Answer:

Hiii, the answer is b, hope this helped! :)

Explanation:

Answer 2

Answer:

mr lewis planted 121x13 then esmiate the answer in 2 diff ways

Explanation:


Related Questions

What is the 4 stages of human life cycle??​

Answers

Answer:

Baby, Child, Teen, Adult

Explanation:

It's probably wrong I just put this for fun

Answer:

childhood, adolescence, adulthood, and old age

What are the components of the control system ?

Answers

Answer:A feedback control system consists of five basic components: (1) input, (2) process being controlled, (3) output, (4) sensing elements, and (5) controller and actuating devices. These five components are illustrated in Figure 1.

Explanation:

Force and velocity are different because

Answers

Answer:

A force pushes or pulls on an object, but velocity is simply something an object has.

Explanation:

Force and velocity are different because force measures the power or strength through which an object with a specific mass accelerates in a particular direction while velocity measures the speed of a moving object in a specific direction.

What is a Force?

A force may be defined as a process of pushing or pulling on an object with mass that significantly causes it to alter its velocity. It is a vector quantity that has both magnitude and direction.

Velocity is characterized as the distance covered by an object in a unit of time. In a more simple sense, it is also defined as the displacement of the object in unit time. It is a vector measurement of the rate and direction of motion.

Therefore, force measures the power or strength through which an object with a specific mass accelerates in a particular direction while velocity measures the speed of a moving object in a specific direction.

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HELPPPPPPP

Which of the following divide by mitosis?

A. prokaryote

B. chloroplast

C. mitochrondrion

D. eukaryote

Answers

Answer:

D

Explanation:

i just tryed guessing but i think its D

What is one defining feature of a prokaryotic cell?


A: nucleoid


B: ribosomes


C: nucleus


D: flagella

Answers

C:
Explanation: because it has no neclus

!!HELP!!
What happens during photosynthesis?
The cell uses glucose to make oxygen
The cell uses oxygen to make glucose
The cell uses the energy in sunlight to make glucose
The cell uses the energy in sunlight to make carbon dioxide

Answers

Answer:

it uses the water to go to sleep for winter

Explanation:

Katie needs to measure water for a recipe she is using to cook dinner. She should measure the liquid in
.

Katie also needs 4 fluid ounces of honey to make honey buns. The shortened form of fluid ounces is
.

Answers

Answer:

FL OZ, oz. fl.,  fl oz , fl.oz.

Explanation:

The acronym of Fluid Ounce is FL OZ. It is the standard unit of measurement of fluid volume.

Where FL represents the Fluid

And OZ represents the Ounce.

It can also be represented as oz. fl.,  fl oz , fl.oz.  etc.  

One cubic meter is equal to 33814.02 fl. oz. Two table spoons represents one fluid ounce which is equal to 1.040 oz.

Answer:

okay the first awnser is pints the second is fl,oz.

Explanation:

what is simple sugar

Answers

Simple Sugar: Simple Sugar is not really actual sugar that's white. Simple sugar is things that have a little bit of sugar in them natural. For example fruit is a simple sugar, you dont have to add sugar to a fruit it natural comes with a sugar taste. A cereal like ( Rice Crispy) they are plain but are a simple sugar product, they dont need sugar to be added, there sugar that comes naturally is not to sweet and not to plain.

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HUUURRRYRRRRRRYY PLEEEEAAAASSSSSEEEEE!!!!!!

Which accurately describes the H in NADPH and NADH?
A.) It acts as stored energy to be used directly by the cell for things like movement
B.) It acts as stored energy to be used to make ATP or synthesize glucose
C.) It is not necessary for the molecules to perform their function

Answers

Answer:

B

Explanation:

because that's what it means

What are the effects of enzymes on chemical reactions?

Answers

Answer:

Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.

Explanation:

Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.

PLZZZZZZZZ HELPPPPP ASAPPPPPPP IM TIMED

Answers

Answer: mouth = chemical physical stomach = chemical physical small and large = physical

Explanation: my mom taught me this she is a doctor

Answer:

Explanation:

Mouth is physical and chemical, the act of chewing is physical by tearing food into smaller pieces, and your saliva is chemical by beginning to break down carbohydrates.

Stomach is chemical and physical.

Churning in the stomach and peristalsis is also part of mechanical digestion. Peristalsis is the involuntary contraction and relaxation of the muscles in your stomach. Chemically your stomach breaks down proteins with hydrochloric acid.

Small Intestine has both, for physical it has segmentation and peristalsis, which helps mix the food mush with digestive juices, and chemical with the secretions of enzymes that help break down protein, fat, carbs, in order for the body to absorb different molecules.

Large Intestine is also both. Physically water is absorbed back into the body. Chemically, bacteria breaks down undigested materials, and helps produce certain vitamins.

(1, 3) and (-3,-5)
linear equation

Answers

Answer:

y = 2x + 1

Explanation:

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Slope-Intercept Form: y = mx + b

Step 1: Find slope m

[tex]m=\frac{-5-3}{-3-1}[/tex]

[tex]m=\frac{-8}{-4}[/tex]

[tex]m=2[/tex]

y = 2x + b

Step 2: Find y-intercept b

3 = 2(1) + b

3 = 2 + b

b = 1

Step 3: Write linear equation

y = 2x + 1

c. Directions: Answers must be in essay form. Outline form is not acceptable. Labelled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is important that you read each question completely before you begin.

question:
The unit of genetic organization in all living organisms is the chromosome.
How does the function and structure of the chromosome differ in prokaryotes?

Answers

Answer:

The structure and function of the chromosome are different in both the prokaryotic chromosome and eukaryotic chromosome. They differ in their size as the genetic information they carry is different from one another.

Eukaryotic chromosome have a different shape from the prokaryotic chromosome as the bacterial chromosome is circular and less complex due to no histone found in prokaryotes as we see in the eukaryotic chromosome. SIze of the bacterial or prokaryotic chromosome is also small and not found in condensed form as these cells carry less genetic information than eukaryotic cells.

A flock of geese flew South for 300 miles. It took them 2
hours to complete that 300 mile trip. What is the
velocity of the flock of geese?

Answers

Answer:

150 miles per hour

Explanation:

just divide 300 by 2 and you will get the answer

What processes break down and build up Earth's surfaces?

Answers

Answer:

Weathering, erosion, and deposition are processes that act together to wear down and build up the Earth's surface. These processes have occurred over billions of years. Weathering is any process that breaks down rocks and creates sediments. There are two forces of weathering, chemical and mechanical (physical).

Explanation:

google

can I have brainliest

Weathering, Erosion, and Deposition

Weathering is the process where things are broken down. (example rocks are weathered by the wind.)

Erosion is the process where the broken down materials are transported to another place. This can be by wind, water, etc.

Deposition is the process where the sediments are deposited at a new location.

Hope this helps!

When does homeostasis happen?

Answers

When your body over heats homeostasis helps to get your temperature stable. Without homeostasis if your body temperature got to hot, and it wasn't have any signs of cooling you could have gotten a heat stroke.

Hope it helped and you can copy word from word from this it did not come from the internet

___________ was the English scientist that used the term call to describe the structures of cork under a microscope

Answers

Answer:

Robert Hooke was the English scientist that used the term call to describe the structures of cork under a microscope

How much is 1 Proton, 1 Neutron, and 1 electron

Answers

Answer: it’s 3

Explanation:

I just guessed alright.

are forest fires biotic or abiotic

Answers

Answer:

biotic

Explanation:

because bio means life then forest fires must be biotic

Fire is non-living, and non-living elements are the abiotic elements in an ecosystem. Thus, fire is an abiotic element in an ecosystem, but rarely mentioned.

The forest ecosystem is made up not only of living organisms (trees, animals, plants, and other living things) but also of non-living organisms (soil, water, air, and landforms) that make up the forest ecosystem.

A forest ecosystem’s abiotic elements include oxygen-rich air, water present in several bodies of water, organic compounds in the trees and soil, and dead plant and animal remains.

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Is it made of a cell

Answers

Every living thing is made of up cells

Also umm we can’t see the image can you post it?

Do viruses carry out all life processes? If not, which are they missing

Answers

Answer:

No, they only carry out reproduction.

Explanation:

individual viruses don't carry translational machinery, namely, the proteins needed to read their DNA and RNA and build new viruses. They invade a cell and hijack its genetic tools to do it for them.

Which characteristics can be used to differentiate star systems?

Answers

in the stars are three main system so I shall say the difference is that they are not in right position

what is the benefit of plants having root hairs and what is thier function

Answers


Root hairs are delicate outgrowths of epidermal cells that significantly increase the volume of soil that plants mine for nutrients.

what illustrated a Skull Bone?

Answers

Answer:

death

Explanation:

Which specialized cell type would be found lining the trachea, the part of the body that brings air to the lungs?
O blood
O epithelial cells
neuron
O muscle cells


Answer: epithelial cell
Explanation: cuz

Answers

Because the conducting passageways of the respiratory system are lined by psuedostratified columnar epithelial tissue which is cilliated and which includes mucus secreting goblet cells

Which of the following inhibits the seepage of rainwater into ground
(a) Concrete floor (b) play ground (c) grass lawn (d) forest land

Answers

Answer:

What inhibits rainwater seepage into the ground is the concrete floor.

Explanation:

In general, water from rain is usually absorbed by the ground, due to its relative porosity. Concrete is solid and non-porous, forming an impermeable layer that prevents water from passing through it.

Concrete comes from a mixture of cement, sand and water, forming a malleable mass that hardens when dry. It is used for the manufacture of floors and buildings, and is characterized by its relative impermeability.

Other options are not correct because:

    Playground, grass lawn and forest land allow the absorption of water from rain.

Answer:

answerit is ( c ) grass lawn

Smoking _ marijuana joints per week for 3-6 months carriers the same risk for developing lung cancer as smoking a pack of cigarettes a day for 20-30 years

A. 4
B. 5
C. 3
D. 2

Answers

Answer:

im pretty sure its 2 joints a day

Explanation:

The abuse of drugs can lead to serious health problems. Smoking THREE (3) marijuana joints per week for 3-6 months carries the same risk for developing lung cancer as smoking a pack of cigarettes a day for 20-30 years (Option C).

Drug abuse refers to the inappropriate and/or excessive use of a drug, which generates dependence.

Cannabis or 'marijuana' is a well-known psychoactive drug derived from the Cannabis plant.

The Cannabis plant contains tetrahydrocannabinol (THC), which is the main psychoactive constituent of marijuana.

This substance (THC) binds to cannabinoid receptors in nerve cells (neurons) and thus induces the release of different hormones.

Marijuana contains more than 500 chemical substances (some of them carcinogenic), it is for that reason that marijuana smoking can lead to lung cancer.

Marijuana smoking may also cause chronic bronchitis.

In conclusion, smoking THREE (3) marijuana joints per week for 3-6 months carries the same risk for developing lung cancer as smoking a pack of cigarettes a day for 20-30 years.

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lake tefillin is a large freshwater lake that is popular for recreation. one year, the managers of the lake introduced a population of rainbow trout to the lake. the graph shows the growth of the population over several years.
which best describes the growth pattern of the rainbow trout?
a) exponential growth,because the lake provides unlimited resources to the population
b) logistic growth, because the effect of limiting factors increased with the population size
c) exponential growth, because limiting factors are always affecting the population
d) logistic growth, because the lake provides unlimited resources until the population reaches carrying capacity

Answers

Answer:

b) logistic growth, because the effect of limiting factors increased with the population size

Explanation:

The S-shaped curve in the graph above depicts a typical logistic growth pattern.

In this type of growth pattern, there is an initially exponential growth at the beginning when limiting factors of growth are minimal. As the initial population increases, resources for growth become limited. Growth starts to slow down. And at some point, insignificant increase in population growth sets in. This is depicted on the graph where the tail end of the curve levels of and fluctuates.

This logistic growth curve shows that, over the years, the limiting factors that slows down growth of Rainbow trout population increases as the population of Rainbow trout increased. This led to the growth rate slowing down and eventually levels up with no real significant change in population size of Rainbow Trout.

Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Patau syndrome occurs when an individual has an extra copy of chromosome 13, giving them three copies. Symptoms of Patau syndrome include extra digits, seizures, and cleft palate. Which word would geneticists use to describe the cause of Patau syndrome?
diploidy
homologous
heterozygous
trisomy

Answers

Answer:

Trisomy "can be used to describe as a genetic disorder that is caused my an extra copy of chromosome number 13"

Answer:

Trisomy

Explanation:

People often say that dogs are "man's best friend.How closely related are dogs and humans? To complete this activity, you will need a computer with Internet connection, a piece of paper, a pen or pencil, and crayons or markers.Search the Internet to find the taxonomy of the domestic dog and humans, from domain through species. Check at least three different sources to make sure the information you find is correct. Try using websites that end in .Gov or .Edu; they are usually reliable.Create a chart listing the taxonomy of each species side-by-side, similar to the chart shown below.

Answers

Answer:

See explanation

Explanation:

Taxonomy actually means “arrangement law”. It is the branch of biology that deals with the classification of organisms.

The taxonomic classification system was invented by Carl Linnaeus. It is a hierarchical model of classifying living organisms based on shared characteristics.

Dogs are referred to as 'man's best friend' partly owing to some level of taxonomic relationship between the two species. Dogs and man belong to a class of vertebrates known as mammals- one of the shared characteristics of mammals is that they give birth to their young ones alive.

The taxonomic classification of man is:

Domain: Eukaryote - Kingdom - Animalia Phylum - Chordata Subphylum - Vertebrata Class - Mammalia Order - Primates Family - Hominidae Genus - Homo Species - sapiens.

The taxonomic classification of dog is:

Domain: Eukaryote - Kingdom - Animalia Phylum - Chordata Subphylum - Vertebrata Class - Mammalia Order - Carnivora Family - Canidae Genus - Canis Species - lupus familiaris

Other Questions
HELP NEEDED ASAP! Brainliest to whoever can explain and give me the answers!Question:It is a gorgeous fall day, and people are enjoying it by bicycling, hiking, and picnicking at Itasca State Park. The day's mood changes, however, when you receive a phone call from the local sheriff's office asking your forensic anthropology team to come out to the state park."A hiker found some bones near Lake Itasca and wants us to come out and identify them. We're wondering if these are the three brothers who disappeared last summer. Can you help us?"You tell them that you'll be there as soon as possible and quickly place a few calls to other members of your forensic team. You load your SUV and drive over to Itasca State Park to meet your colleagues and investigate the situation.The sheriff's officers and the hiker lead you to the scene. By the time you arrive, there is only half an hour of daylight remaining. In the somewhat secluded glade of trees, you see scattered bones. While the sheriff's officers hurriedly photograph the scene, you map the bone scatter and determine that the bones are human. One of your team members compiles a preliminary inventory as you collect each bone:3 skulls6 femora4 hip bones (os coxa)2 humeri2 tibiae5 scapulaeRefer as needed to this handout entitled "Human Skeletal Elements" for the locations of these bones in the human skeleton.The next morning, your team returns to work in the laboratory, where you get a call from the sheriff. The family of the three missing boys is pressuring him for information. Your team begins the final osteological exam. After careful examination, you produce your final inventory. You are working with the same number of bones, but you now have determined which side of the body they came from (when applicable).You have:3 skulls6 femora (4 right and 2 left)4 hip bones (1 right and 3 left)2 humeri (right)2 tibiae (left)5 scapulae (3 right and 2 left)Assignment:1. How many bones are in the collection? (This number is called the NISP- Number of Identified Specimens.)2. Which of the bones in the collection belong to the axial skeleton? Which belong to the appendicular skeleton?3. What is the maximum number of individuals who could be represented by these bones? Explain your answer. (Hint: Assume every bone in the collection could be from a different person.)4. The MNI is the Minimum Number of Individualsthe lowest number of individuals needed to account for the bones present. Print out this Bone Collection Worksheet to help you calculate the MNI. It contains all the bones in the collection: 3 skulls, 6 femora, 4 os coxae, 2 humeri, 2 tibiae, and 5 scapulae. How many skeletons can you make from the bones in the worksheet? Recreate the skeletons and submit a picture of your skeletons to your instructor with each of the bones labeled. (Helpful Hint: Multiple bones of the same type can belong to the same individual. For example, one person has two femur bones, one on the right and one on the left.)5. Why do you think the MNI is important when working in a scenario like this?6. What do you tell the sheriff? The introduction of clipper ships and steamboats brought about major changes in transportation. Explain these changes, using at least two details to explain. Describe the biological needs for cells to be surrounded by a membrane that is selectively permeable for different materials. Need helpppppp! Plzzzzz One method for getting rid of a skinwalker who is stalkingyour forest and village is to figure out their name and say itout loud.True or False? which statement is false hey i am from india .. Can I get an answer please? pleaseeeeee helpppppp True or False: Decomposers replenish nutrients into the "abiotic" phase of a nutrient cycle. URGENT!!! i need help with Spanish ! Use the distributive property to express 16 + 48. *O. 2 (13 + 22)O. 3 (6 + 16)O. 16 (2 + 2)O. 16 (1 + 3) A ______ of a number is that number times any whole number.Example: 10 is a _____ of 5 because 5 x 2 = 1048 is a _____ of 8 because 8 x 6 = 48 Solve for r. -pr + r = 8r - 2 Okay so I am doing this assignment where I have to outline what rights i think we should have at school and kind of set it up like the constitution... ex. Good food, Field trips, that its sanitary.Do you guys have anymore ideas that I use/ add on to? I'd really appreciate it, Thanks! PLEASE HELP ME!!! (Number 9) Give two examples of fermentation in real life. 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Issue common stock in exchange for cash. 7. Collect cash from customers for services provided in (3) above. 8. Borrow cash from the bank and sign a note. 9. Pay for the current month's utilities. 10. Pay for office supplies purchased in (4) above.