PLEASE ANSWER QUICKLY

Which characteristic is shared by all mollusks and echinoderms?

live only in salt water

lack a backbone

use tube feet to move

have an open circulatory system

Answers

Answer 1

Answer:

have an open circlitory system

Explanation:

Answer 2

Answer:

D) have an open circulatory system

Explanation:

Hope this helps!


Related Questions

Explain surface runoff. HELP PLSSSSSSS

Answers

Explanation: Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle. Runoff that occurs on surfaces before reaching a channel is also called overland flow. A land area which produces runoff draining to a common point is called a watershed

Explanation:

surface runoff also called soil erosion is the washing away of top soil by the actions of moving water after rainfall. It occurs when the surface of soil is exposed to direct rainfall.

Write the letter all of the following statements that are NOT true. a. Coding sequences for gene products can be isolated from cDNA libraries. b. Antibodies are used for Northern blot analysis. c. VNTRs are highly conserved in human populations. d. PCR amplification generates large numbers of linear DNA fragments. e. RNA molecules can be used as hybridization probes in Southern blot analysis. Separate your answer(s) with a comma, and enter only the letter(s) of your choice(s

Answers

Answer:

b. Antibodies are used for Northern blot analysis.

c. VNTRs are highly conserved in human populations.

Explanation:

The northern blot technique is used in molecular biology laboratories for detecting specific RNA molecules in a sample of RNA derived from a particular cell/tissue. Antibodies can be detected by the enzyme-linked immunosorbent assay (ELISA). In ELISA, antigens are used to detect specific antibodies: the addition of the antigen produces a positive reaction i.e., formation of the antigen-antibody binding complex. Subsequently, a second antibody with a particular marker is added to bind with the complex, thereby producing a change in the color and thus evidencing the presence of the target antibody in the sample. On the other hand, the variable number of tandem repeats (VNTR) are short sequences (around 20 to 100 bp) whose number of repetitions varies at specific loci in the genome of many organisms, including humans. Since VNTR sequences exhibit variation in length between individuals of the same species/population, they are widely used as molecular markers to identify individuals, QTL (quantitative trait loci) mapping, establish phylogenetic relationships among individuals/cultivars/lines, etc.

Matt use a camera to take a picture of a rose on a piece of paper in the picture the rose appear to be bright red and the background appear to be white then Matt place a blue glass filter over the camera lens and took another picture in this picture of the Rose appear to be black in the background appear to be blue explain what happens to light waves to make the appearance of the rules in the appearance of the background different in the two pictures. ​

Answers

The blue glass filter absorbed most of the red light waves and allowed only the blue light waves to pass through, resulting in the appearance of the rose and the background being different in the two pictures.

What is Light?

Light is a form of electromagnetic radiation that is visible to the human eye. It is a type of energy that travels in straight lines and has both wave-like and particle-like properties. Light is a fundamental part of our world and plays a crucial role in our lives.

Light is produced by the motion of charged particles, such as electrons, and can be emitted by sources such as the sun, light bulbs, and fires. Light travels at a constant speed of approximately 299,792,458 meters per second in a vacuum, which is known as the speed of light.

When Matt took the first picture of the rose on a piece of paper without any filter, the camera captured the visible light waves that were reflected by the rose and the background. The rose appeared bright red because it reflects mostly red light waves and absorbs other colors, and the background appeared white because it reflects all the visible light waves equally.

Learn more about Light from the given link

https://brainly.com/question/10728818

#SPJ1

why is it important that your goals should be measura
ble​

Answers

Answer:

Measurable goals are important in order to clearly identify exactly what it is you want to achieve and when the goal has been achieved. Having a measurable goal can improve excitement and motivation, because you know when you've reached your destination and achieved the goal.

Explanation:

Explanation:

Measure able goals helps you define exactly what you want to achieve in the future.

Identify the wave that has the highest amount of energy​

Answers

Answer:

the tallest one

that is the amplitude

would you rather get hit by which wave if it were water?

Explanation:

two functions of the anther and why it attracts insects.​

Answers

Answer:

yeah

Explanation:

Produce male sex cells (pollen grains)

Why
laboratory rats kept and studied in the exclusion zone?

Answers

They are studied by the scientist so that they can examin them time to time

c) Describe the phenotype ratio for their offspring. (2 points)

Answers

Since we cant see the trait, it is either 3:1 dominant trait to recessive trait complete dominance. 1:2:1 dominant:blended:recessive if incomplete dominance

What term do sociologists use to describe when people act together?
A. Comradeship
B. Compromise
C. Chaos
D. Collectivity

Answers

Answer:

d

Explanation:

Sociologists study human behavior, organization, and interaction. They monitor the operations of social, religious, political, and economic institutions and groups. Collectivity is the term that sociologists use to describe when people act together.

What comes under sociology?

Sociology is the study of social life, social change, and the social causes and consequences of human behaviour.

Sociologists look at how people interact in groups, organizations, and communities.

The term that sociologists use to denote the act of people together is collectivity.

Thus, the correct option is D.

For more details regarding sociology, visit:

https://brainly.com/question/11098307

#SPJ2

GIVING BRAINLIEST!!!!

What is a similarity between wind and water?

A) They are both types of non-renewable resources.
B) They are both sources of power for objects that people use.
C) They can both be polluted by pesticides and fertilizers.
D) They are both sources of oxygen for plants and animals.

Answers

i think the correct answer would be b :]

My dog whom I've had since before I was born is about to die. Does anyone have any help or tips? Thank you so much for helping. This means a lot.

Answers

Answer:

spend as much time with your loyal pet

Explanation:

make them feel safe and comfortable since it is their last moments on earth. cherish them. hope everything turns out fine for you

Answer:

sorry i though you said she or he die you have to make that last times with he or she the best ones

Explanation:

HELP ME!! Do you think we should build von Neumann Machines if we have the necessary capabilities? What instructions should we give them if we do?

Answers

Answer:

Explanation:

Control Unit retrieves data and instruction in the same manner from one memory. Design and development of the Control Unit is simplified, cheaper and faster. Data from input / output devices and from memory are retrieved in the same manner.

Some cells can die as a result of external agents suck as poison or trauma. However, most cells die through a process known as apoptosis, or programmed cell death. What is a likely consequence of a mutation that prevents apoptosis

Answers

Answer: A tumor

Explanation:

A mutation that prevents apoptosis can disrupt the normal cellular mechanisms that prevent tumor formation, and lead to the uncontrolled growth of cells that could ultimately cause cancer.

What is apoptosis?

A mutation that prevents apoptosis, or programmed cell death, can have several consequences. One of the most significant consequences is the accumulation of damaged or abnormal cells, which can lead to the development of tumors and cancer. Apoptosis is a natural process that eliminates cells that are no longer needed or that are damaged beyond repair. This process is essential for maintaining tissue homeostasis and preventing the growth of abnormal cells.

When cells are prevented from undergoing apoptosis, they may continue to divide and proliferate uncontrollably, leading to the formation of a mass of cells known as a tumor. This is because cells that have undergone DNA damage or that have other abnormalities are normally eliminated through apoptosis to prevent the accumulation of cells that could become cancerous.

Learn more about apoptosis, here:

https://brainly.com/question/28275150

#SPJ2

A trait that occurs in 900 individuals out of a total of 1,800 individuals occurs with a probability of
A. 0.04.
B. 0.25.
C. 0.50.
D. 0.75

Answers

Answer:

C. 0.50

Explanation:

Since 900 is 1/2 of 1,800, it happens half of the time so the probability is 0.5

hope this helps chu <3

The answer Is C!! Hope this helps

Is a person who inherits a single allele for Huntington’s disease likely to develop the disorder? If so, when during his or her lifetime?

Answers

Answer:

Huntington's disease is caused by an inherited defect in a single gene, meaning yes it is likely. more likely will get symptoms between the ages of 30-40s

All human beings differ from one another by roughly what percentage of their total DNA?

Answers

Answer:

All human beings are 99.9 percent identical in their genetic makeup. Differences in the remaining 0.1 percent hold important clues about the causes of diseases.

Review the Background Information and answer the questions: What is the difference between microevolution and macroevolution? Fill in the blanks: Godfrey Hardy and Wilhelm Weinberg independently derived mathematical descriptions of the relation between allele proportions and genotype proportions. This simple model considers _____ gene with _____ alleles, and makes the prediction the ___________________________ __________________________________________________________________________________________________________

Answers

Answer and Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files

The lytic cycle deals with?

A. Bacteria
B. Viruses
C. Bacteria and Viruses
D. None of the above

Answers

Answer:

I am pretty sure its C (Not 100% sure)

Explanation:

I used my memory

3
What is the most likely cause of plate movement?

Answers

Answer:

earthquake

Explanation:

11. What are cell cycle regulators?

Answers

Answer:

A conserved set of cyclin-dependent protein kinases (Cdks) initiate or regulate events through phosphorylation of intracellular proteins, thus controlling cell cycle progression, terminal differentiation, and apoptosis. ...

Explanation:

The cell cycle regulators are cyclins, CDKs, and CDK inhibitors as well as some of their substrates, interaction partners, and upstream regulators.

What is a cell?

The smallest unit of life is a cell. There are biomolecules in it. Every living thing is composed of several cell units. Different sorts of creatures contain various types of cells.

Prokaryotic cells are the most basic types of cells; they are only seen in unicellular organisms, do not engage in cell division, and lack real cell organelles and a nucleus, instead having DNA coiling up in the cytoplasm.

Eukaryotic cells are higher cells that contain cell organelles and have the capacity to carry out a variety of intricate tasks required by big organisms.

Thus, Cell signaling is a method of communication between or within cells, and a change in a cell's activity is conveyed as a signal that may set off a chain of events so that the body can respond appropriately.

To learn more about cell cycle regulators, refer to the below link:

https://brainly.com/question/21893874

#SPJ6

What is a tree that produces cones called

Answers

Answer:

Conifers are trees that produce cones to protect their seeds.

Which feature of deforestation has the greatest effect on the atmosphere?

extinction of forest animal species

increased risk of flooding

reduction of photosynthesis

soil erosion

Answers

Answer:

I'd say reduction of photosynthesis

Explanation:

This is because the atmosphere is mainly made up of gases and photosynthesis involves some certain gas exchange and evolution.

Remember there's room for correcting me since this answer is based on my thinking

What is herd immunity, and why are vaccines important for achieving herd immunity?

Answers

Answer:

Herd immunity is a form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to an infection, whether through vaccination or previous infections, thereby reducing the likelihood of infection for individuals who lack immunity.

Explanation:

Vaccines create immunity without causing illness or resulting complications. Herd immunity makes it possible to protect the population from a disease, including those who can't be vaccinated, such as newborns or those who have compromised immune systems.

PLEASE HELP!!
Which of the following is a problem caused by acid rain?
is responsible for smog
damages limestone and marble on statues and buildings
is a CFC that causes destruction of ozone
can cause burning sensation in the eyes and respiratory problems

Answers

Answer:

It damages limestone and marble on buildings and statutes.

Can cause burning sensation in the eyes and respiratory problems.

Explanation:

Why are dark colored pocket mice found in the dark, rocky areas of the desert?

Answers

their fur is that color so they can camoflaugue with their surroundings

Answer:

Because God put them there on purpose. For example, they could hide in little tunnels in the ground to hide from predators, and also, so it could camoflauge with it's surroundings. Have a great day!

Explanation:

(:

Where do each of the elements (letters) in glucose comes from during the process of photosynthesis.

Answers

Answer: From carbon dioxide and water

Explanation:

Glucose is a type of carbohydrate which is produced as a product of the biochemical reaction that is photosynthesis. Carbon dioxide and water are the reactants used for the synthesis of glucose. The carbon dioxide is obtained from the atmosphere and water from the roots. Carbon, hydrogen, and oxygen are the elements that are present in the carbohydrate through reactants named carbon dioxide and water.

5. The center of your skeletal system is your backbone?
(1 Point)
true
False
help

Answers

Answer:

True

Explanation:

PLEASE HELP!!
Which sector creates the most fossil fuel emissions?

agriculture
transportation
electricity generation
industry

Answers

Answer:

transportation

Explanation:

Transportation (28.2 percent of 2018 greenhouse gas emissions) – The transportation sector generates the largest share of greenhouse gas emissions.

hope this help

Which do solar flares and coronal mass ejections have in common? Select the two correct responses.

A. They appear as dark spots on the sun's surface.
B. They tend to occur during minimum points in the solar cycle.
C. They are caused by the sun's changing magnetic field.
D. They are explosive events that can affect Earth.

Answers

C. They are caused by the sun's changing magnetic field.

D. They are explosive events that can affect Earth.

Explanation:

I'm sorry if it is wrong but I am almost 100% that it is correct!

Have a good one!

The  solar flares and coronal mass ejections are caused by the sun's changing magnetic field. Also they are explosive events that can affect Earth. The correct options are C and D.

What is solar flare?

A solar flare is a massive explosion on the Sun caused by the sudden release of energy stored in 'twisted' magnetic fields.

However, not all solar flares are safe. While the Earth's magnetic field protects us from solar radiation, the sheer electromagnetic power of a flare disrupts power grids, internet connections, and other communication devices.

Ejections occur at varying rates depending on the phase of the solar cycle, ranging from about 0.2 per day near the solar minimum to 3.5 per day near the solar maximum.

Coronal Mass Ejections are large plasma and magnetic field expulsions from the Sun's corona.

The sun's changing magnetic field causes solar flares and coronal mass ejections. They are also explosive events that can have an impact on Earth.

Thus, the correct options are C and D as per the given scenario.

For more details regarding solar flare, visit:

https://brainly.com/question/22331462

#SPJ2

What tool do meteorologists Use to analyze particle movement within storms?

Answers

They use a Doppler radar
Other Questions
If a Tv costs $910 and the sales tax is $80, how much will the TV cost in total? 2.5 Critically discuss how community needs may influence your choice of a careerand indicate how that may help the community. what type of phone do i have can u guess by the looks of it Which retirement plan is managed by an insurance company? a Fixed Annuity b Pension Plan c Roth IRA d Traditional IRA 5/6 + 2/3 + 1/4 = ??? PLEASE HELP MEFor pic one, just tell me the letter (dont have to work anything out)For help (pic) 2, the two missing reason options are:4- A) given B)reflexive property of congruence C)Definition of a midpoint D)definition of equilateral5- A) SAS B)ASA C)SSS D)AAS I'll mark the best or the first as brainliest. Why is stock data calculated using the subtraction and addition method instead of a simple moving average? PLEASE HURRY I AM TAKING A TEST PLEASE HELP DUE AT MIDNIGHT! 2+2 >:) so complicated Three identical units of merchandise were purchased during July, as follows: Date Product T Units Cost July 3 Purchase 1 $31 10 Purchase 1 34 24 Purchase 1 37 Total 3 $102 Average cost per unit $34 Assume one unit sells on July 28 for $48. Determine the gross profit, cost of goods sold, and ending inventory on July 31 using (a) first-in, first-out, (b) last-in, first-out, and (c) average cost flow methods. There are 12 pieces of candy in a bowl. 6 are mints, 4 are Butterscotch, and 2 are Cinnamon. What is the probability of Mr. Sommerpulling out mint, putting it back, and thenchoosing mint again? P(mint, then mint) 4 of 9Colin invests 300 into his bank account.He receives 5% per year compound interest.How much will Colin have after 6 years?Give your answer to the nearest penny where appropriate. What is the name of the building above? Elaine worked 48 hours last week. Her hourly rate is $9.20. What was her GROSS PAY? A water solution containing an unknown quantity of a nonelectrolyte solute is found to have a freezing point of 0.23C. What is the molal concentration of the solution? Which statement is true? A. All rectangles are squares. B. Some trapezoids are parallelograms. C. All squares are rhombuses. D. No rhombuses are rectangles. The Champagne Fairs were open-air, outdoor markets where merchandise from all over the world was sold.Immersive Reader(1 Point)TrueFalse How would you describe the appearance of the substance before the phase change? Helpppppppppppppppppp