Which of the following are parts of the circulatory system?
A.heart, veins, arteries, capillaries
B.heart, brain, arteries, lungs
C.heart, spine veins, brain
D.heart, esophagus, veins, capillaries
Answer: heart, brain, arteries, and lungs
Explanation:
Answer: B.
Explanation:
Which kind of cells can become any type of cell in the body?
PLEASE HELP!
A globular cluster is a large group of old stars. What could be a reason new stars are not usually observed within globular clusters?
Answer: Globular clusters do not have sufficient amounts of gas and dust
Explanation: i got it wrong on usatestprep lol
Help me please guys I’ll give you brain lee ist
Answer:
Had this and it was 3 for me :)
Explanation:
Hope its correct :)
______________ rock forms beneath Earth's surface. *
1.Intrusive
2.Clastic
3/Nonfoliated
4.Origin
5.Pressure
6.Compaction
Answer:
Igneous rock
Igneous rock that forms when magma hardens BENEATH Earth's surface. Igneous rock that forms from lava on the earth's surface hardens (when magma cools ABOVE the ground).
What was the time frame?
500 Million Years Ago
900 Million Years Ago
650 Million Years Ago
4.6 to 4 Billion Years Ago
Answer:
4.6 to 4 Billion Years Ago
Explanation:
According to the researchs and studies, the earth formed about 4.54 billion years ago and the oldest known living organism date to around 3-3.5 billion years ago which are the first bacteria that formed in the water.
I hope this answer helps.
.
This central organelle in plant cells helps to keep the plant cell turgid:
Answer:
The central vacuole
Answer:
The large central vacuole.
Explanation:
Why can DNA be used to construct aa tree that shows al living organisms
An earthworm lives and reproduces in the soil. It aerates the soil and adds organic material to it. The earthworm is a source of food for other organisms. All of these statements together best describe
please answer quick
(1) a habitat
(2) autotrophic nutrition
(3) an ecological niche
(4) competition
What molecules will carry the electrons to the electron transport chain?
Answer:
electron and nuetrons
The molecules NADH and FADH₂ will carry the electrons to the electron transport chain.
These electron carrier molecules (NADH and FADH₂) are produced during the breakdown of glucose and other energy-rich molecules in the preceding steps of cellular respiration. They carry the high-energy electrons derived from these molecules to the electron transport chain, which is embedded in the inner mitochondrial membrane in eukaryotic cells.
The electrons passed through the electron transport chain ultimately combine with molecular oxygen to form water, which is the final electron acceptor in the chain.
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Which landform is an area in a Koppen E zone?
A. desert
B. savannah
C. tundra
D. grassland
Answer:
D it is The Grassland
Explanation:
D it is The Grassland
How is energy related to the change of state represented
by the model?
Atoms gain energy as a solid changes to a gas.
Atoms gain energy as a liquid changes to a gas.
Atoms lose energy as a solid changes to a gas.
O Atoms lose energy as a liquid changes to a gas.
Answer:
Explanation:
Atoms lose energy as a gas changes to a solid. How is energy related to the change of state represented by the model? Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.
Answer:
Atoms gain energy as a liquid changes to a gas.
Explanation:
A block of wood is measured, as shown in the diagram below.
What is the length of the wooden block in millimeters?
Answer: It’s 26.0mm mate
Explanation:
Answer: 260 mm
Explanation: if 26 cm to mm is 260
Can an atom be broken down into a simpler substance? If so, what?
Answer:
An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element. Common substances, such as air, water, wood and cloth are mixtures of materials and can be chemically or physically broken down into simpler substances.
Answer:
elements cannot be broken down into a simpler substance.
Explanation:
chemical elements are the simplest of substances.
What are earths landmasses
Answer:
Landmasses include supercontinents, continents, and islands. There are four major continuous landmasses on Earth: Afro-Eurasia, the Americas, Antarctica and Australia.
Explanation:
Answer:
Afro-Eurasia, the America, and Australia.
Explanation:
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
F- The car with the smaller mass will require less force to stop than the car with the larger mass.
G- The car with the larger mass will maintain its velocity while traveling down the hill.
H- The car with the smaller mass will take longer to stop than the car with the larger mass.
J- The car with the larger mass will have less inertia than the car with the smaller mass.
Please mark answer and Give explanation
Answer:
F
Explanation: The car with the smaller mass will require less force to stop than The car with the larger mass that is it
The car with the smaller mass will require less force to stop than the car with the larger mass.
What is law of inertia?The law of inertia or Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that form unless it is acted upon by an external force.
This law is called the law of inertia because it depends on mass of the object.
The object with more mass will required more force to be stopped while the object with less mass will require less force to be stopped.
Thus, the car with the smaller mass will require less force to stop than the car with the larger mass.
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Some students want to test different soils to find out which ones absorb heat the fastest. For the first test, they put 500 grams of sand in a beaker and put a thermometer in the sand. Which aspect of this experiment should be kept the same in all the other tests? Some students want to test different soils to find out which ones absorb heat the fastest. For the first test, they put 500 grams of sand in a beaker and put a thermometer in the sand. Which aspect of this experiment should be kept the same in all the other tests?
Answer:
Weight of the soil (500g)
Explanation:
According to this question, some students are conducting an experiment in order to find out which of the different soils used absorb heat the fastest. For the first test, they put 500 grams of SAND in a beaker and put a thermometer in the sand.
In an experiment, the variables that must be kept constant for all the groups is called the CONSTANT OR CONTROLLED VARIABLE. This is done in order not to influence the outcome of the experiment. In this case, the weight (500g) of the soil should be kept the same for all other tests.
This means that for the remaining soil being tested, 500g of each type of soil should be used.
Which organisms synthesize carbohydrates, and in which cell organelle(s) does this synthesis occur?
a. animals in mitochondria
b. plants in mitochondria
c. plants in chloroplasts
d. animals and plants in mitochondria
e. animals and plants at ribosomes
Which type of protein will fight disease?
insulin
antibodies
ligaments
genes
Answer:
Antibodies! Found in your plasma which is the liquid part of your blood.
If the DNA sequence was a AGC what would the mRNA sequence be?
Answer:
DNA utilizes four bases, adenine (A), guanine (G), cytosine (C), and thymine (T), in its code. RNA also uses four bases. However, instead of using 'T' as DNA does, it uses uracil (U). Therefore, if your DNA sequence is 3' T C G T T C A G T 5', the mRNA sequence would be 5' A G C A A G U C A 3'.
Explanation:
3. The metric system of measurement is based on the number 1
What?...............
Which would probably have the greatest effect on a protein's function—a change to the primary, secondary, or tertiary structure? Explain your answer.
Answer:
There are 20 different standard L-α-amino acids used by cells for protein construction. Amino acids, as their name indicates, contain both a basic amino group and an acidic carboxyl group. This difunctionality allows the individual amino acids to join in long chains by forming peptide bonds: amide bonds between the -NH2 of one amino acid and the -COOH of another. Sequences with fewer than 50 amino acids are generally referred to as peptides, while the terms, protein and polypeptide, are used for longer sequences. A protein can be made up of one or more polypeptide molecules. The end of the peptide or protein sequence with a free carboxyl group is called the carboxy-terminus or C-terminus. The terms, amino-terminus and N-terminus, describe the end of the sequence with a free α-amino group.
The amino acids differ in structure by the substituent on their side chains. These side chains confer different chemical, physical, and structural properties to the final peptide or protein. The structures of the 20 amino acids commonly found in proteins are shown in Figure 1. Each amino acid has both a one-letter and three-letter abbreviation. These abbreviations are commonly used to simplify the written sequence of a peptide or protein.
figure1-Protein-Structure
Depending on the side-chain substituent, an amino acid can be classified as being acidic, basic or neutral. Although 20 amino acids are required for synthesis of various proteins found in humans, we can synthesize only ten. The remaining 10 are called essential amino acids and must be obtained in the diet.
The amino acid sequence of a protein is encoded in DNA. Proteins are synthesized by a series of steps called transcription (the use of a DNA strand to make a complimentary messenger RNA strand – mRNA) and translation (the mRNA sequence is used as a template to guide the synthesis of the chain of amino acids which make up the protein). Often, post-translational modifications, such as glycosylation or phosphorylation, occur which are necessary for the biological function of the protein. While the amino acid sequence makes up the primary structure of the protein, the chemical/biological properties of the protein are very much dependent on the three-dimensional or tertiary structure.
A change to the PRIMARY structure WILL HAVE the greatest effect on a protein's function.
The primary structure of a protein refers to the linear sequence of amino acids within a polypeptide chain.A change in the protein primary structure will change protein properties and likely will also alter their functions.The secondary structure of a protein refers to the specific arrangement of groups of amino acids. The most common types of secondary structures in proteins include alpha helix and beta sheets.The tertiary structure refers to the three-dimensional shape of the protein. There are two major main classes of protein tertiary structure: fibrous and globular.The quaternary structure refers to the association of different protein subunits to form a multimeric protein.In conclusion, a change to the PRIMARY structure WILL HAVE the greatest effect on a protein's function.
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What is the original source of all energy in a food web?
environmental science own words pls i need it
help me please asap??? :$
Answer:
A. To make more body cells. like skin cells or liver cells for example.
What occurs when the number of molecules of a substance is equal in two areas? Answer correctly
A) Equilibrium
B) metabolism
C)fermentation
D)cellular respiration
REPLICATE the following strand of DNA: TCGCAAGTCATATC
Answer:
Replicate DNA: TCGCAAGTCATATC
This is a replicate strand of DNA for what you put down.
You're enjoying playing with your neighbor's new kittens. You notice than some of them look identical to the mama cat, while others looks different from the mom and from each other. You remember from your science class that traits are inherited from parents. All BUT ONE of these traits is inherited.
Answer:mom had alot of cat because thats what she decided to do to hereslf
Answer:
weight
Explanation:
GIVING BRAINLIEST!!!
What stage of cellular respiration occurs after the formation of acetyl-CoA?
Electron transport chain
Fermentation
Glycolysis
Krebs cycle
Answer:
D. Krebs Cycle
Explanation:
Hope this helped.
The answer to this question is Krebs Cycle.
Krebs cycle. A series of chemical reactions that occur in most aerobic organisms and are part of the process of aerobic cell metabolism, by which glucose and other molecules are broken down in the presence of oxygen into carbon dioxide and water to release chemical energy in the form of ATP.
Overview of the Krebs or citric acid cycle, which is a series of reactions that takes in acetyl CoA and produces carbon dioxide, NADH, FADH2, and ATP or GTP.
The Krebs cycle itself actually begins when acetyl-CoA combines with a four-carbon molecule called OAA (oxaloacetate). This produces citric acid, which has six carbon atoms. This is why the Krebs cycle is also called the citric acid cycle.May 15, 2020
A segment of RNA has the sequence AUU. What explanation can be made about how this codon came to be?
A
The RNA strand formed from the rearrangement of the bases in a DNA strand.
B
The RNA strand broke off from a DNA strand that had a much longer genetic code.
C
The RNA codon was transcribed from a DNA strand with the sequence TAA.
D
The RNA codon was transcribed from a DNA strand that had the sequence UAA.
Answer:
C - The RNA codon was transcribed from a DNA strand with the sequence TAA.
Explanation:
transcription describes the process by which a strand of mRNA is coded for by the protein RNA polymerase taking RNA bases and matching them in complimentry with the DNA bases
what are acquired traits why are the streets generally not inherited over generation explain
Answer:
Acquired traits are due to changes in the life style, injury, loss of body parts, disuse of some body parts. These are the traits which occur in the somatic cells. Changes in the somatic cells are not passed on to the offspring belonging to next generation. Hence acquired traits cannot be passed on to next generation.
Explanation: