How many factors should a well-designed experiment test at one time?

Answers

Answer 1

Answer:

Depends on the number of experiment variables.

Explanation:

You should only test one variable/factor


Related Questions

9. What is the difference betwen climate and weather?

Answers

Answer:

Climate is the long-term weather, like it is usually sunny in Florida,

Weather is the weather that you see every day, such as rainy.

Explanation:

Answer:

Weather reflects short-term conditions of the atmosphere while climate is the average daily weather for an extended period of time at a certain location.

Explanation:

What is the mRNA and Amino Acids for: TACACCTTGGCGACGACT

Answers

Answer: A U G U G G A A C C G C U G C U G A

Explanation:

Answer:

AUGUGGAACCGCUGCUGA

Explanation:

MULTIPLE CHOICE QUESTION
Are a majority of the problems associated with down syndrome a result
of an over or under expression of chromosome 21?
under
over

Answers

It would be over because a baby without a birth defect has 46 chromosomes but with a Down syndrome baby they have an extra copy of chromosome which is chromosome 21

Hope this helps

Have a great day/night

Summarize in 2-3 sentences, how an RNA vaccine works to help protect you against
viruses?
I

Answers

Answer:

boost your immune system

Explanation:

Answer:

Vaccination is the process in which substances called antigens are introduced artificially into the body to stimulate the immune system, the set of cells that protects the body against infections .

Is energy used or not?

Answers

Answer:

Explanation:

energy is used, everything uses energy especially living organisms

Answer:

Yes energy is used, it can be used in certain ways, like when you are running or walking, guess why you are able to do those because you have energy to do that.

Explanation:

Increasing the number of coils in a solenoid or an electromagnet results in a ___
magnetic field.

Answers

Answer: Stronger Magnetic Field

Explanation:

The magnetic field in a solenoid is given by

[tex]B=\mu nI[/tex]

where B=magnetic field

[tex]\mu=[/tex]Permeability

n=no of turns per unit length

I=Current through solenoid

When No of turns increases, it increases the strength of the magnetic field.  

Answer:

Hey I saw that you had the Geometry end of year review escape room I was wondering if you maybe had the answers and work for the rest of the pages?

Explanation:

Thank u

Which of the following is NOT a description of ASTRONOMY edpuzzle

Answers

could you give the options plz? :)) if not you can look up discriminations of astronomy and use the process of elimination to find your answer

What molecule do bacteria take in (use up)?

Oxygen
Carbon Dioxide
Water

(This is 7th grade science)

Answers

Carbon dioxide will be the answer

Water that falls onto land surfaces is either soaked into the ground or flows downhill into a body of water. The water that soaks into the ground is called groundwater.

Soil and rock that allow this water to pass through them are called ________.
A. aquifers
B. compacted
C. permeable
D. runoff

Answers

Materials that allow water to pass through the are called....

C. Permeable

The capacity of a rock or other substance to let the passage of water is known as permeability, hence option c is correct.

What is groundwater?

Groundwater may readily flow through permeable materials because the pore space is linked throughout the rock or sediment. Mud and clay are examples of materials with great porosity yet very limited permeability.

An aquifer is a water-bearing rock that easily transfers water to wells and springs, the aquifers may be dug into and water pumped out.

Therefore, water that falls onto land surfaces flows into water bodies or it may be soaked in the ground, this water flows through the soil and rock which are permeable, hence option c is correct.

Learn more about rocks, here:

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A plant or animal that carries a disease or parasite during part of its life cycle is called a(n):

Answers

Answer:

it could probably be host

Answer:

A plant or animal that carries disease or parasite during part of its life cycle is called a host

I HOPE IT HELPS ❤❤

............................Please help ASAP ........................

Answers

Answer:

I think answer choice D

Explanation:

The passage summarized says that ostriches and rheas look exactly the same but are different sizes, therefore answer choice D is auto eliminated

Which statement accurately describes radioactive dating?

A.Geologists use only one type of radioactive dating.
B.Geologists compare parent and daughter elements to determine rock type.
C.Geologists will measure how stable multiple parent elements can decay into multiple daughter elements.
D.Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.

Answers

Answer:

D. Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.

Explanation:

Radioactive dating is the method in which radioactive isotopes are employed to evaluate the age of rocks and ores. There are many complex radioisotopes utilized for radioactive dating is like Potassium, Uranium, and Carbon. Radioactive dating operates on the system that a radioactive isotope can fade into the constant daughter nuclei at a steady rate. Geologist commonly uses the system for half life. Half-life is the time needed for half of the radioactive element to decline. This is fixed for a selective element.

Answer: D

Explanation:

How could one determine if two
unidentified organisms share a common
ancestor?

Answers

Answer:

Evolutionists determine that two organisms have a common ancestor is by looking at fossil evidence in different rock layers using the law of Superposition (Oldest layers are on the bottom, newest are on the top) and compare the skulls or other bones to each other in order of oldest to newest (or newest to oldest). Another way to determine this is to examine the amount of DNA a certain species shares with another species. An example of this would be that Humans share roughly 90% of our DNA with chimpanzees or the other Great Apes.

Explanation:

DNA

They can look at the DNA it's the most common one.

There are 4 pieces of evolution and they are

Fossils , Geography , Embryos / DNA , Anatomy

Fossils: Physical remains of species , Determine age, location,  environment

Deeper layers = older

Geography: Proves species share common  ancestors, depending on where

they live

DNA: BEST evidence because it’s the  MOST ACCURATE

Similarities in the early stages of  development

Similarities in DNA

More similarities = closely related

More differences = not related

Anatomy: Compare body parts of different  species to see how they evolved

3 different structures:

Homologous (same structure,  different function)

Analogous (similar structure,  different organisms)

Vestigial (body parts that no  longer serve a purpose)

All of that are in evolution

Hope it helped! ( Gave u my biology notes :D)

What happens inside your body as you an oral report in front of your class? URGENT I need it quick, I will give brainliest!

Answers

Answer:

If you get nervous (which could happen alot) it feels like your body temperature is rising but really its not , and your face starts to turn red. And when you do an oral report you use your brain to read off the work and to show your knowledge.

Explanation:

What are gametes?

male and female reproductive organs
male and female reproductive tissues
male and female reproductive systems
male and female reproductive cells

Answers

Answer:

male and female reproductive cells

Explanation:

I hope it helps ❤❤

Answer:

the last one

Explanation:

What are the like terms in the expression: 2a + 3b+ 4C - 5a + 8 - 4

THESE ARE THE OPTIONS

2,3,4, -5

O 2a, 3b, 4c

-5a, 8

2a, -5a, 8, -4


HELPP

Answers

Answer:

2a and -5a

8 and -4

hahahah they are separate from each other

2a and -5a simplifies to -3a

8 and -4 simplifies to 4

Explanation:

hope this helps!

is RNA an ezyme that belongs to a larger class of molecules

Answers

Answer:

nucleic acids

Explanation:

nucleic acids macromolecules made out of units call nucleotides come in two naturally occurring varieties deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)

i hope this helps

Which is more concentrated in starch beaker or tube?

Answers

Answer:

beaker

Explanation:

it is more concentrated

Can someone please help ASAP

Answers

Answer:

I would say 2/4 or 3/4 sorry if its wrong

Please select all that apply​

Answers

Answer:

Cell renewal, growth, and asexual reproduction :)

Explanation:

Which best describes the two types of shared characteristics?

A 1 - characteristics that remain in the common ancestor and the modern organism
2 - characteristics that are new and have been modified from what was found in the
common ancestor
B 1 - characteristics that are new in the common ancestor and the modern organism
2 - characteristics that have been modified from what was found in the common
ancestor
C 1 - characteristics that have been modified in the common ancestor but not in the
modern organism
2 - characteristics that are new in both the common ancestor and the modern
organism
D 1 - characteristics that remain in the common ancestor and the modern organism
2 - characteristics that are new in both the common ancestor and the modern
organism

Answers

Answer:

characteristics that remain in the common ancestor and the modern organism. 2 - characteristics that are new and have been modified from what was found in the common ancestor. 1 - characteristics that remain in the common ancestor and the modern organism. ...Mar 11, 2020

Answer:

the answer is c

Explanation:

If water was removed from a plant's environment what would happen to the plant's glucose production?​

Answers

Answer:

It would cease

Explanation:

If water is removed from a plant's environment, the plant's glucose product will cease. This implies that the plant will stop producing glucose.

Water is an essential ingredient for the production of glucose by plants. During the process of photosynthesis, green plants manufactures their food in the presence of sunlight. The water combines with carbon dioxide to produce glucose oxygen gas using sunlight energy. Without water, this reaction will not be possible to take place. Therefore, the production of glucose stops when there is no water.

The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers. (p + q = 1, p2 + 2pq + q2 = 1)

Answers

Answer:

The no. of heterozygous carriers = 0.0392

Explanation:

From the given information:

The incidence of this recessive disorder i.e. q² = 1/2500

q² = 0.0004

q = 0.02

From Hardy Weinberg's Equilibrium.

p + q = 1; &

p² + 2pq + q² = 1

p + 0.02 = 1

p = 1 - 0.02

p = 0.98

So, the numbers of heterozygous carrier 2pq is:

= 2 × 0.98 × 0.02

= 0.0392

Question 14 (2 points)
(06.03 MC)
Which of the following correctly identifies a lymphatic organ and describes how it
can fight cancer? (2 points)
1) Lymph vessel; removes fluid from tissues
2) Lymph trunk; returns lymph to the blood
3) Spleen; replaces damaged red blood cells
4) Thymus; exposes lymphocytes to antigens

Answers

All of the statements correctly identify a lymphatic organ. In vertebrates, the lymphatic organs, also known as the lymphoid system, are an organ system that is a part of the immune system and works in conjunction with the circulatory system.

The Lymphatic OrgansLymphatic vessels, which are found all over your body and transport lymph away from tissues, are a network of capillaries (microvessels) and a huge network of tubes.By emptying into the corresponding subclavian veins, the lymph ducts, which are formed by the lymph trunks, restore lymph to circulation.Red blood cells that are outdated or damaged are eliminated by the spleen, which also removes cellular waste from circulation.Training specific white blood cells known as T-lymphocytes or T-cells is the thymus gland's main job.

Hence, all of the statements correctly identify a lymphatic organ.

How lymphatic system fights Cancer?Regional lymph nodes, which are predictive of distant organ metastases and poor survival, are accessible to tumor cells via lymphatic arteries.As the lymph fluid moves through the lymph nodes, it is filtered. B cells and T cells, two types of white blood cells, assault any viruses or bacteria they discover in the lymph.

To learn more about the Lymphatic System refer to:

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what is the relationship between size and complexity?

Answers

Answer:

"The relational complexity in small groups increases rapidly with small increases in size." a greater rate than does the size of the group." forms of communication," to establish the importance of the concept of organizational com- plexity to the size relationship.

Identity Factors in an Experiment
WARM-UP
Consider what you already know about scientific design. To set up an experiment testing whether
students' grades are affected by their level of exercise, which factors do you think you would need to keep
in mind? Check all that apply.
student gender
vpe of exercise
amount of exercise
what grades are measured
how long the experiment will last
what time of day the students exercise
how much time the students spend studying
DONI

Answers

Answer:

Did you copy and paste this from somewhere because i want to help but i don't understand it at all.

Explanation:

Cathy's favorite salad dressing is a liquid with particles of salt, pepper, and garlic. When comparing a spoonful of salad dressing to a cell, what would the liquid be equivalent to? What would the particles be equivalent to?

Answers

Answer:

Liquid equivalent to "cytoplasm" and the particles equivalent to "organelles".

Explanation:

While comparing a liquid salad dressing to a cell, the liquid will be equivalent to "cytoplasm" because cytoplasm is a thick solution present in each cell that made up of water, salts, and proteins.

The particles would be equivalent to "organelles" because as particles float in liquid salad adding flavours to the salad likewise organelles are present in a cell floating in the cytoplasm that performs a specific function.

Hence, the correct answer is " liquid will be equivalent to "cytoplasm" and the particles will be equal to "organelles".

What determines which bases will be brought to the DNA strand during DNA replication?

Answers

Answer:
Replication relies on complementary base pairing, that is the principle explained by Chargaff's rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).

What is the role of enzymes in the DNA replication process?
A. Enzymes read the DNA code and build a new DNA molecule from scratch.
B. Enzymes link together to form a template for a new DNA molecule to be built.
C. Enzymes split the DNA molecule into two rails and then transport corresponding nitrogenous bases to each rail.
D. Enzymes link adjacent nucleosides together, becoming an integral part of the structure of the new strands of DNA.

Answers

Answer:

B.

Explanation:

I WILL GIVE BRAINLIEST!!!

Cat coat color is an X-linked trait.

Calico cats typically have patches of black, white, and orange on their coats as a result of X-inactivation. Most calico cats are female, but rarely a male calico will be born into a litter.

Which of the following could explain calico coat color in a male kitten?

Choose 1 answer:

(choice A)
A
The male kitten has a genotype of XXY.

(choice B)
B
The male kitten has a genotype of XXX.

(choice C)
C
The male kitten has a genotype of XYY.

(choice D)
D
The male kitten has a genotype of YY.

Answers

Answer:

d)

Explanation:

mark as brainleast and fo-ll-ow me

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