Which was the earliest method used to determine stellar distances? A. supernovae B. parallax C. cepheids variables D. redshift measurement

Answers

Answer 1

Answer:

Parallax

Explanation:

Trust me I've done this

Answer 2

Answer:

parallax

Explanation:

Plato/Edmentum

Which Was The Earliest Method Used To Determine Stellar Distances? A. Supernovae B. Parallax C. Cepheids

Related Questions

The bullfrog and the Northern cricket frog both reside in eastern pine forests and use many of the
same limited resources. The relationship between these two amphibians is a form of -
O A predation
O B. competition
o c. parasitism
D.
gommensalism

Answers

I think the answer is B, competition :))

Manufacturers could reduce waste and conserve resources by making products that use less

are difficult to repair

use more materials

are more durable

are disposable

Answers

Answer:

are disposable.

Explanation:

Manufacturers could reduce waste and conserve resources by making products that are disposable.

This ultimately implies that, manufacturers of finished products that are being used by the consumers should endeavor to make them easily disposable without any adverse effect on the environment.

Which statement summarizes the relationship between DNA, proteins, and amino acids?
A. The DNA molecule is a protein formed by amino acids that are linked together by peptide bonds.
B. The type of protein that composes DNA codes for the twenty different amino acids.
C. The sequence of amino acids in DNA determines the type of protein formed during protein synthesis.
D. The sequence of nucleotides in DNA codes for specific amino acids which bond to form proteins.

Answers

Answer:b

Explanation:

The statement (B) is correct. The type of protein that composes DNA codes for the twenty different amino acids.

What are proteins?

Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues.

Moreover, proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.

Therefore, a molecule made up of amino acids. Proteins are needed for the body to function properly. They are the basis of body structures, such as skin and hair, and of other substances such as enzymes, cytokines, and antibodies.

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What happens when a photon of light hits photosynthesis

Answers

A photon of light hits chlorophyll, causing an electron to be energized.
I found it on googIe

Answer:

Chlorophyll strikes a photon of light, allowing an electron to be energized.  the electron transport chain, the free electron passes, and the electron's energy is used to inject hydrogen ions into the thylakoid space, transferring the energy to the electrochemical gradient.

Explanation:

The glucose transporter used by cells to obtain glucose from the media is a protein embedded in the membrane. When researchers first started to investigate the glucose transporter's structure they had trouble because it seemed to have 2 differnet shapes! Eventually they realized that the glucose transporter changes shape as it moves glucose into the cell but does not require energy to do it's work. Which of the following is the best description for the glucose transporter?

a. It's a carrier protein doing facillitated diffusion
b. It's a carrier protein doing active transport
c. It's a protein channel doing facillitated diffusion
d. It's a protein channel doing active transport

Answers

Answer:

a. It's a carrier protein doing facillitated diffusion

Explanation:

Facilitated diffusion may be defined as the transportation of molecules from a high concentration to a low concentration that is down the concentration gradient without input of the energy. Whereas the active transport is transportation of the molecules from the low concentration to the high concentration which is against concentration gradient by the membrane protein.

The glucose transportation process requires membrane protein for the transport and does not require any energy. Therefore, it is carrier protein which is doing the facilitated diffusion.

Which evolutionary advantage do tulips have over the snapdragons?
A. Greater variation in traits
B. Better able to adapt
C. No chance for mutation
D. Faster reproduction

Answers

It is faste reproduction, therefor its option D
I think it’s D hope it’s right

A study is being done to test the effects of temperature on the number of microbial colonies. Four different incubators are set up, each at a different temperature with one culture plate in each. Each plate has the same nutrient content, pH, and are inoculated with microorganism samples from the same source. At the end of the experiment, the number of colonies on each plate is counted. What is the independent variable

Answers

Answer:

The correct answer is - the different temperatures of incubators.

Explanation:

An independent variable is a variable in a study or research which is manipulated or changed to check or find the effect on the dependent variable. The independent variable is the only factor that changes in research while other factors remain constant that can affect the result in the study.

In this case or study, there is the only factor that is manipulated is the temperature of incubators is manipulated to see the effect of temperature on the number of microbial colonies. Thus, the different temperatures of incubators is the independent variable here.

You accidentally stub your toe on a chair when walking in a darkened room. A ________ - Word Answer Type your answer here (pain receptor) relays this information by sensory nerves _________ - Word Answer Type your answer here Please type your answer to submit ) to the _________ - Word Answer Type your answer here , which in this case is the spinal cord. You immediately step back because the spinal cord sends a command via the _______ - Word Answer Type your answer here to your leg muscles, which are acting as the ________ - Word Answer

Answers

Answer:

1. Receptor (nociceptor).

2. Afferent neurons.

3. Spinal cord.

4. Motor neurons.

5. Efferent neuron (effector).

Explanation:

In Biology, stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.

In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.

In this scenario, you accidentally stub your toe on a chair when walking in a darkened room. A receptor (nociceptor) relays this information by sensory nerves in the afferent neurons to the spinal cord, which in this case is the spinal cord. You immediately step back because the spinal cord sends a command via the motor neurons to your leg muscles, which are acting as the efferent neuron (effector).

Which natural forces can create sediments
A Wind and ice
B Moving air,moving water,and moving ice
C Water and ice
D sunlight

Answers

Answer:

C - Water and ice

Hope it help❤️

the correct answer is B- Moving air, moving water, and moving ice. the forces have to be moving in order to weather an object down.

What features allowed you to distinguish some of the organism on set 2

Answers

We cannot see the picture??

we cannot see the picture?

How many factors does a scientist want to differ between the experimental and control groups?

A) 2

B) 0

C) 1

D) 3

Answers

Answer:

C

Explanation:

The experimental and control group differ by only one factor for a scientist, and that is the independent variable.

A scientist will always try to isolate the effects that are due to a variable and keep every other variable constant. The variable that is manipulated in order to measure its effect is known as the independent variable. A control group usually forms the basis for measuring the effects of the independent variable. While the independent variable is varied in experimental groups, it kept at the zero level for the control group.

The correct option is, therefore, C.

which of these events is a likely result of chemical water pollution?
A. Sediment particles floating in water clog the gills of fish.
B. Fish die from lack of oxygen due to an algal bloom.
C. Rainbow trout disappear from a stream because of high water temperatures.
D. Algae are killed by solvents that have run off into a pond.

Answers

I would say the answer is a

Fish die from lack of oxygen due to an algal bloom is a likely result of chemical water pollution. Therefore, option (B) is correct.

What is chemical water pollution?

Chemical water pollution refers to the presence of harmful chemicals or substances in water bodies such as lakes, rivers, and oceans. These chemicals may come from various sources, including industrial processes, agriculture, and human activities. Common types of chemical pollutants in water include heavy metals, pesticides, oil spills, and toxic waste.

Chemical water pollution can have harmful effects on the environment and human health, including reduced water quality, contamination of aquatic life, and the spread of waterborne diseases. Preventative measures, such as proper waste disposal and treatment, are necessary to minimize chemical water pollution and protect water resources.

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How many molecules of water are created when making a lipid?

Answers

Answer:

Three molecules

Explanation:

Since fats consist of three fatty acids and a glycerol, they are also called triacyclglycerols or triglycerides. Triacyclglycerols: Triacylglycerol is formed by the joining of three fatty acids to a glycerol backbone in a dehydration reaction. Three molecules of water are released in the process.

Answer: 3 molecules

Explanation: Hope that helps

[FW.04H]A single computer microchip uses 10 gallons of water during its manufacture. A group of people suggested that the use of computers should be reduced to help conserve water. Which of these is the best alternative method to conserve water in manufacturing microchips?


Reduce the size of microchips.

Use graywater to manufacture microchips.

Collect rainwater and use it to make microchips.

Research ways to reduce water waste in making microchips.

Answers

Answer:

Option D, Research ways to reduce water waste in making microchips

Explanation:

The best way to conserve any natural resource is to conserve it at the source point and further make it apt for re use.

If the water waste is microchips is reduced then gallons of water will be saved. Also, devising engineering mechanism to reuse water in chip manufacturing industry will further reduce the water waste.

Hence, option D is correct

PLEASE HELP!!!
• Humans have some...
A.) 7,000 cells
B.) I Million total cells
C.) 30-37 trillion cells
D.) 876 Quintillion cells
E.) we are not made of true cells

Answers

Answer:

C. 37.2 Trillion cells.

Explanation:

C. 30-37 trillion cells I think

PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!
Answer the HOT Question:
What do you think would happen to the skin if the dermis layer and the epidermis layer of the skin become separated?
To earn full credit
Restate the question
Define the epidermis
Define the dermis
Predict what you think will happen if they become separated*

What do you think would happen to the skin if the dermis layer and the epidermis layer of the skin become separated?

Answers

Answer

Explanation:

if the epidermis and the dermis say become separated you think will happen to your skin?

epidermis the surface AKA your skin.

dermis layer of tissues under your epidermis.

when the epidermis and the dermis are split and have a blister will come up in your skin.

17. Which of these processes is the result of the motion of particles in a gas or liquid?
A. conduction
B convection
C. insulation
D. radiation

Answers

Answer:

B

Explanation:

14. a science student claims that a substitution mutation is less likely to affect gene function than an insertion or deletion mutation. use logical reasoning and evaluate this claim.

Answers

DNA functions in codons which are pairs of three amino acids. In substitution since one is taken out and replaced, only the codon that that acid would have been in is affected. With insertion or deletion every codon on is shifted due to the presence of a new amino acid

Because insertions and deletions produce a frame-shift that modifies the interpretation of following codons, they are frequently more detrimental than substitutions that modify only one amino acid.

What is a mutation?

A alteration in the DNA sequence of an organism is referred to as a mutation. Errors in the replication of DNA during the process of cell division, exposure to mutagens, or viral infections are all potential causes of mutations.

Base substitutions, deletions, and insertions are the three different kinds of DNA mutations that can occur.

Because an insertion or deletion results in a frame-shift that changes the reading of subsequent codons and, as a result, alters the entire amino acid sequence that follows the mutation, insertions and deletions are typically more harmful than substitutions, in which only one amino acid is changed. This is because frame-shifts change the reading of subsequent codons.

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Using the Gizmo, determine how coal and petroleum (oil) are formed. Describe the steps required to form each fuel from atmospheric CO2.

Answers

Answer and Explanation:

Petroleum and coal are fossil fuels.  The degradation of the earliest plants forms them. These dead plants started to pile up and form peat. Then the pressure and heat from various geological procedures convert peat into coal. Coal is a combustible rock which contains 50% carbon. Anthracite, Lignite and bituminous are the types of coal, and the formation of coal depends upon the quantity of hydrogen, oxygen and carbon. Petroleum exists naturally in liquid form and formed by decomposed organic matter. Fossil fuels can be refined into usable substances. Gasoline, tar, lubricants and many other products are obtained from petroleum. There are two steps, which required to form fuel from atmospheric carbon dioxide. In first step carbon dioxide is converted into carbon monoxide. In the second step, carbon monoxide combines with hydrogen to form hydrocarbon fuels. The formation of fuel is a natural process when animals respire carbon dioxide release in the atmosphere.

Which is a difference between active and passive transport?
A. Eukaryotes are capable of active transport, while prokaryotes are capable of passive transport.
B. Cells only carry out active transport when they need to move, while passive transport occurs constantly.

C. Active transport requires ATP, while passive transport does not.
D. Cells with mitochondria carry out active transport, while cells without mitochondria carry out passive transport.

Answers

if i am not mistaken , the answer is C .

Active transport really needs ATP to work , while passive transport doesn’t need ATP .

The difference between active and passive transports is that active transport requires ATP while passive transport does not. the correct option would be C.

Active transports are the movement of materials in and out of the cell that requires the expedition of energy. The energy is usually in the form of Adenosine Triphosphate (ATP).

Active transport is unlike passive transport because the latter requires no energy. In other words, passive transports are spontaneous.

Active transport usually involves the movement of materials against their concentration gradients while passive transport is the complete opposite.

Examples of active transport include the sodium-potassium pump, movement of amino acids in the intestinal tracts of man, etc while examples of passive transport include simple diffusion of oxygen to the alveolar walls in the lung.

More on active transports can be found here: https://brainly.com/question/2503897

Protein markers react with specific ______, which are proteins found in the immune system.

antigen

immunity

antibody

white blood cells

Answers

Antibody, hope this helps!

Protein markers react with specific antibody which are proteins found in the immune system.

Immune system generally produces antibodies to protect the body from foreign invaders (antigen) such as bacteria, viruses or pollen.

Proteins produced by the body immune system from the stores of immunoglobulin protein is known as Antibodies.

Antibodies works by recognizing and latching onto antigens in order to remove them from the body.

The correct answer is Protein markers react with specific antibody in the body.

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In the protein synthesis STEM case, which of the following mutations/errors created
a nonfunctional ADA enzyme (protein) which in turn caused deoxyadenosine to build
up?

A. tRNA error

B. Premature stop codon mutation

C. Active site mutation

Answers

Answer:

B. Premature stop codon mutation

Explanation:

In science, theories____?

Answers

Answer:

have limited explanatory power

what is a hypothesis

Answers

Answer:

a suggested sollution or a guess to an information given to you

What are the four levels of organization in living things? a. cell, multicellular, organ, organ system b. single cell, multicellular, tissue, organ c. larger size, longer life, specialized cells, organs d. cell, tissue, organ, organ system

Answers

D I’m pretty sure sorry if wrong

composition of water yam​

Answers

2 hydrogens and 1 oxygen

in what ways can overpopulation be beneficial to differential reproductive success?

Answers

Answer:

Differential reproduction is called the one that occurs as a result of the differences between the individuals that make up a society or sample, where it is those with comparative advantages who manage to reproduce, while those who do not have said advantages tend to die out. It is, in short, a practical application of Charles Darwin's theory of natural selection.

Thus, if there is an overpopulation of a certain species, a series of effects will occur (such as the scarcity of resources, the lack of living space, etc.) that will tend to gradually decrease the population to return to an ideal number of individuals. In this aspect, differential reproduction will be applied, being able to reproduce those that have comparative advantages over the rest, which will inevitably become extinct.

Which is the classification of any naturally occurring solid inorganic substance characterized by a crystal structure? A. fossil B. metal C. mineral D. rock​

Answers

Answer:

C. mineral

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states. The three (3) classical states of matter are;

1. Liquid: is the state of matter in which the physical substance can be poured and takes the shape of its container. Also, liquids generally have a definite volume. Examples of liquids are urine, water, milk, blood etc.

2. Gas: is the state of matter in which the physical substance has no definite shape or volume and as a result fills all available space. Also, gases are easily compressible, takes the shape of its container and can flow. Examples of gases are hydrogen, oxygen, argon, nitrogen etc.

3. Solid: is the state of matter in which the physical substance has a definite shape and fixed volume but not compressible. Examples of solids are pen, screwdriver, television, car etc.

Mineral is the classification of any naturally occurring solid inorganic substance characterized by a crystal structure. Also, minerals are homogeneous in nature with a defined chemical composition and characterized by a crystal structure comprising of ions, atoms, or molecules in an orderly arrangement.

Some examples of minerals are iron, copper, aluminum, tin, coal, quartz, feldspar, mica, etc.

Select the facts that support the endosymbiotic theory. Check All That Apply Mitochondria and chloroplasts have their own DNA. Mitochondria and chloroplasts have their own DNA. Mitochondria and chloroplasts often leave cells, surviving well on their own. Mitochondria and chloroplasts often leave cells, surviving well on their own. Mitochondria and chloroplasts are surrounded by two membranes. Mitochondria and chloroplasts are surrounded by two membranes. Mitochondria are about the same size as most bacteria.

Answers

Answer:

Mitochondria and chloroplasts have their own DNA

Mitochondria and chloroplasts are surrounded by two membranes

Mitochondria are about the same size as most bacteria

Explanation:

The endosymbiotic theory, also known as symbiogenesis, is a theory that explains how eukaryotic organisms have been formed from prokaryotic cells. This theory holds that eukaryotic organisms originated from prokaryotic organisms that engulfed another prokaryotic cell, creating thus an organism with multiple membranes. In consequence, eukaryotic organelles, including mitochondria and chloroplasts, would have evolved from these prokaryotic endosymbionts. Moreover, both mitochondria and chloroplasts contain their own genes which are localized in a circular chromosome, thereby supporting an endosymbiotic origin of both organelles. Finally, bacterial cells have 1 to 10 microns in length, while mitochondria have a similar size, thereby also supporting an endosymbiotic origin of this organelle.

In which layer of the cutaneous membranes are nerve ending located?
A. Fascia.
B. Subcutaneous.
C. Dermis.
D. Epidermis

Answers

Answer:

the answer is the dermis

Explanation:

The cutaneous membranes are nerve ending located in the Dermis hope this helps and i'm sorry if it's wrong.

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Germany invades poland cause or effect please helpppp!!!!!!!!! Citizens in most countries have which civic duty?_______________________________O A. Attending school at certain ages O B. Applying for naturalized citizenshipO C. Serving in country's governmentO D. Getting married to another citizenNote: This Is social Studies Dont worry about the math i would appreciate it a lot if you answered this: At the end of a snowstorm, Ellie had 16 inches of snow on her lawn. The temperature then increased and the snow began to melt at a constant rate of 1 inch per hour. Assuming no more snow was falling, how much snow would Ellie have on her lawn 4 hours after the snow began to melt? How much snow would Ellie have on her lawn after tt hours of snow melting? Line segment GH is divided by point J in the ratio of 1:4. Endpoint G is at (7,5) and point J is at (10, 14).What are the coordinates of endpoint H?1. (57,75)2. (-5, -31)3. (22,50)4. 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