Which trilobite characteristic did not change through time?

Answers

Answer 1

Answer: The answer is a presence of three lobes.

The name trilobite means three lobes. Their body is divided into three lobes - a central axial and two pleural lobes. This characteristic did not change through time and it can be found between all fossils. But, some changes are noticed regarding the eyes size, shape, and position, suture position, as well as a number of body segments and spine.

Answer 2

Answer:

number of spines

Explanation:

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Gregor Mendel crossed homozygous tall plants (TT) with homozygous short plants (tt). All the resulting offspring were tall. From these results, what conclusion did Mendel draw?

The nutritional information on a cereal box shows that one serving of a dry cereal has 200 kilocalories. If a person were to ignite one serving of the cereal in a bowl, the amount of heat given off would be sufficient to raise the temperature of 20 kg of water how many degrees Celsius

Answers

Answer:

10°C.

Explanation:

Heat released in any system can be calculated as follows:

Heat released = m c DT

Here, m is the mass , c is the specific heat and DT is the change in temperature.

Heat released = 200 kcalories = 200,000 calories

The mass of water = 20 kg = 20000 g

The specific heat of water = 1 cal / g degree

The rise in the temperature is as follows:

heat released = m c DT

200,000 = 20,000 ( 1) (DT)

DT = 10°C.

Thus, the answer is 10°C.

The characteristics of all organisms and viruses are determined by the instructions carried in _______. A. hydrogen bonds B. nucleic acids C. sugar bases D. phosphoric acids

Answers

the correct answer is B. the information that decides the characteristics of all organisms are contained in their nucleic acids. Nucleics acids are DNA and RNA. DNA have genes that code for proteins which are responsible for the structural and functional characteristics of organisms. DNA is transcribed into RNA and RNA is translated to proteins. Therefore information that is in these nucleic acids determines all the characteristics of organisms

The characteristics of all organisms and viruses are determined by the instructions carried in nucleic acid.

Further Explanation:

Nucleic acid is an information molecule that plays an important role in the storage and transmission of hereditary information. They are polynucleotide that means it is composed of a long chain of molecules. It is composed of a series of nucleotides that are identical to each other. It is the primary component of the DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). DNA is the double-stranded genetic material that is present in each living cell. RNA is a single-stranded genetic material that helps in many cellular activities such as protein synthesis.

DNA acts as a master blueprint for life. It is present inside all living organism both eukaryotes and prokaryotes. It is present in bacteria and most viruses. RNA is the genetic material that is present in the certain virus. The genetic material helps in determining the class or species of the organism.

Learn More:

1. Learn more about the treatment of eukaryotic cell with a drug brainly.com/question/10767798

2. Learn more about the proteins synthesis in a cell brainly.com/question/1420458

3. Learn more about exchange of gases by blood cells brainly.com/question/1213217

Answer Details:

Grade: High school

Subject: Biology

Chapter: Biological Macromolecule

Keywords:

Nucleic acid, information, molecule, storage, hereditary, nucleotide, deoxyribonucleic acid, ribonucleic acid, cellular, prokaryotes, eukaryotes.

Changes in the gene pool can occur due to various mechanisms. In 1989, a large oil spill occurred in Prince William Sound, Alaska, when the Exxon Valdez oil tanker ran aground. Approximately 11 million gallons of oil were spilled and spread 1,300 miles along the Alaskan coastline. The damage from the oil spill affected thousands of animals in the area, including killer whales, harbor seals, sea otters, fish, and sea birds. Which mechanism most likely affected the gene pools of the organism populations in the areas around the oil spill?

Answers

Answer:

genetic drift

Answer:

genetic drift

Explanation:

Zander is trying to determine the correct answer on a multiple-choice test. He has eliminated two of the four answer options because they do not fit the question, and now he is trying to recall what he knows about the question. Which two parts of Zander’s brain are working to perform these operations?

Answers

The two parts of Zander's brain that are working to perform these operations are the frontal lobe and temporal lobe. The frontal lobe plays a part in decision-making and stores short or long term memories. The temporal lobe plays a part in senses, in this case the vision.

Answer: b, hippocampus and cerebrum

Explanation:

right on edg

Differnces between prothrombin and fibrinogen

Answers

hello!

prothrombin is a protein presented in blood plasma which is converted into active thrombin during coagulation

fibrinogen is a protein that helps with blood clotting

prothrombin turns into thrombin through extrinsic and intrinsic pathways which activates fibrinogen

if click “thanks” if this helps! :)

- emily

Which statement best explains why water is known as the universal solvent?

Answers

It is known as a universal solvent because of the vast number of compounds that dissolve in water completely. This however goes for destilated water which has been cleansed from all waste and the water has been purified to be pure H2O. This means there's no metals or trace compounds inside.

Answer:

B is the answer

Explanation:

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Double fertilization results in the formation of select one:a. two diploid embryos and a haploid endosperm.b. one diploid embryo and a triploid endosperm.c. two diploid embryos.d. one diploid embryo and a diploid endosperm.e. two diploid embryos and a diploid seed coat.

Analyze: Cellular respiration involves two phases. The anaerobic phase does not involve oxygen, while the aerobic phase does. Where does each phase take place?

Which of these organelles is covered in ribosomes? A. Golgi apparatus B. Large vacuoles C. Rough endoplasmic reticulum D. Smooth endoplasmic reticulum

Cells that are striated are found in _____.A. muscle tissue B. nervous tissue C. epithelial tissue D. connective tissue