Biology High School

first one to answer gets brain

First One To Answer Gets Brain

Answers

Answer 1

Answer:

I believe the printing press

Explanation:

the printing press was invented around 1440

Related Questions

Because biological systems are generally held at constant temperature and pressure, it is possible to predict the direction of a chemical reaction by measuring which of the following?

a. ATP concentration
b. Enthalpy
c. Entropy
d. Free energy

Answers

I think it is B hope this helped

Because biological systems are typically maintained at constant temperature and pressure, calculating the free energy of a chemical reaction allows one to predict the reaction's direction that is in option d.

What role does free energy play in the biological system?

In a biological system, the free energy is very significant, where the free energy is the amount of energy that is needed by the cells of the body to perform the function, and the negative free energy indicates that the reaction is exothermic and this energy can be used for other processes. The process where free energy is needed, known as endothermic process, must be completed when there is positive free energy.

Hence, because biological systems are typically maintained at constant temperature and pressure, calculating the free energy of a chemical reaction allows one to predict the reaction's direction that is in option d.

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How does the structure of DNA explain chargaff's rule?

Answers

Answer:

Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine

Chargaff's Rule explains that in the natural DNA, the total number of guanine equals to the number of cytosine and the total number of adenine equals to the number of thymine. This tells about the base pair composition of DNA molecule.

What is Chargaff's rule?

Chargaff's rule states that in the DNA molecule of any species or organism, the total amount of guanine residues should be equal to the amount of cytosine residues and the amount of adenine residues should be equal to the amount of thymine residues. A stoichiometric ratio of 1:1 of purine and pyrimidine bases i.e., A + G = T + C should be fulfilled.

Chargaff's rule describes the ratio of the various nitrogenous bases present in the DNA molecule. It aids in the determination of the structure and composition of DNA in living organisms. It is constant for a species.

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Suppose an ice cube is dropped into a beaker of hot water. Eventually, the ice will melt and the hot water will cool. Which of the following statements best describes the water in the beaker?

A.
The water will reach thermal equilibrium.

B.
The water will not all be the same temperature.

C.
The warmer water will rise above the cooler water.

D.
The water will reach specific heat.

Answers

D the water will reach specific heat.

Explain the production of urine, include the processes of Ultra filtration and selective reabsorption.

Answers

Answer:

Urine Is 95% Water

Explanation:

The Glomerulus Filters Water and Other Substances from the Bloodstream

The Filtration Membrane Keeps Blood Cells and Large Proteins in the Bloodstream

Reabsorption Moves Nutrients and Water Back into the Bloodstream

. Waste Ions and Hydrogen Ions Secreted from the Blood Complete the Formation of Urine

BIOLOGY QUESTION NOT THAT HARD
NEED THIS ANSWER IN 20 MINS OR LESS PLEASE

Two questions:
1. What are the 2 major functions of proteins?
2. Describe the structure of proteins.

Answers

Answer:

1.  It helps repair and build your body's tissues and it also provides your body with a structural framework.

2.  Protein structure is the three-dimensional arrangement of atoms in an amino acid-chain molecule.

Explanation:

Answer:

1-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.

2-The overall structure of the protein includes both alpha helices (green) and beta sheets (red). The primary structure of a protein — its amino acid sequence — drives the folding and intramolecular bonding of the linear amino acid chain, which ultimately determines the protein's unique three-dimensional shape.

The way an organism appears is called the

Answers

Answer:

phenotype

Explanation:

why is water not food and
what does the food label on water show that water does.

Answers

Because water liquid
Because water is liquid

greatest mass to least mass: moons, galaxy,
planets, stars, nebulae.

Answers

From largest to smallest they are: galaxy, star, planets, moon and nebulae

Which activity occurs in the process of photosynthesis?
A) Chemical energy from organic molecules is
converted into light energy.
B) Organic molecules are obtained from the
environment.
C) Organic molecules are converted into light energy.
D) Light energy is converted into the chemical energy.

Answers

Answer:

A) Chemical energy from organic molecules is

converted into light energy.

Explanation:

Plants can take energy from the sun and use that energy to synthesize carbohydrates. The process by which plants convert solar energy into chemical energy is called photosynthesis. During photosynthesis, carbon dioxide and water are converted into carbohydrates and molecular oxygen.

Answer: D

Explanation: because


Can anyone help with these 3 questions thank you xx

Answers

Answer:

I know the answer to your 3.1 question. Between minutes 15 and 60, the blood glucose level goes up for about 20 minutes and then drops over the next about 30 minutes to it’s lowest point. iI do not know the answers to the other ones, but I really hope this helps! :)

Explanation:

Not having enough resources to satisfy all one's needs and wants
economics
O scarcity
O resource
O fixed cost

Answers

Answer:

Scarcity

Explanation:

I hope this helps!

Please Mark me brainliest and have a great day!

Answer:

Scarcity

Explanation:

Scarcity means the state of being in short supply or having a shortage of something.

Hope this helps. Have a nice day you amazing bean child.

Doppler radar instruments transmit information in the form of

Answers

Answer:

By their design, Doppler radar systems can provide information regarding the movement of targets as well as their position. When the WSR-88D transmits pulses of radio waves, the system keeps track of the phase (shape, position, and form) of those pulses.

Explanation:

Which object is created during the formation of a star​

Answers

Answer:

Protostar

Explanation:

Answer:

The answer is a protostar

Explanation:

A range of
is basic. *
Between 0 and 6.9
Between 7.1 and 14
7
O 14

Answers

Answer:

7.1 and 14 is basic

Explanation:

0 - 6.9 is acidic.

7 is neutral

14 is basic but its not a range.

7.1 and 14 is the answer

A _______________ from the sun hits chlorophyll and excites an electron, known as __________________________________.

Answers

Answer:

Photon, light dependent reaction of photosynthesis

Explanation:

Photosynthesis is the process by which green plants make their own food in the presence of sunlight and water.

There are two steps of Photosynthesis that include light dependent reaction and light-independent reaction.

In light dependent reaction, a photon from the sun is absorbed by the green pigment in leaves called chlorophyll that allow the electron to excite from ground energy level to high energy level. It converts the solar energy into chemical energy and called light dependent reaction of photosynthesis.

Hence, the correct answer is "Photon, light dependent reaction of photosynthesis".

Describe mechanism of blood circulation. ​

Answers

Answer:

Look down!! ;)

Explanation:

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta.

Hope this helps!! ;)

Discuss the differences between embryotic and adult stem cells?

Answers

Answer:

The difference is that adult stem cells unipotency and embryonic stem cells have pluripotency  

Explanation:

I hope I helped

List 3 organisms that are made of plant cells:

Answers

Answer:

Seed Plants

Ferns

Mosses

Thallophytes

Explanation:

What kind of inheritance is horse color an example of?

A. Complete dominance
B. Incomplete dominance
C. Co-dominance

Answers

i think the answer would be a , because of the certain color is more popular than an another based on the the gene but i can be completely wrong , correct me if i am :)

Summarize cell division in prokaryotes

Answers

According to the research, the correct answer is that unicellular living beings like prokaryotes have their cell division by binary fission, forming two identical individuals (daughter cells).

What is binary fission?

It refers to the process of cell division where first the deoxyribonucleic acid (DNA) is duplicated and then cytonesis occurs, which involves the separation of the cytoplasm.

In this sense, it gives rise to two daughter cells with identical genetic material, this is the reproduction method shared by certain yeasts, algae, bacteria and other prokaryotic organisms.

Therefore, we can conclude that the cell division mechanism of prokaryotes is through binary fission where two daughter cells arise.

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1) How many people is AIDS (the disease caused by HIV) responsible for killing?

Answers

Answer:

770000

Explanation:

Answer:

30 million people

Explanation:

Since the epidemic began, more than 60 million people have been infected with the virus and nearly 30 million people have died of HIV-related causes. Nearly 13,000 people with AIDS in the United States die each year. Engagement in care: AIDS-related deaths occur when people who are infected do not receive the testing, treatment and care they need.

HELP PLEASE

At Love Canal in the 1970s, there was an environmental disaster. In response, the Superfund law was passed. Why can we view Love Canal and the creation of the Superfund as a positive environmental event?

A. It allowed the EPA to find toxic waste sites and force the responsible parties to clean up the sites.
B. It provided money to businesses responsible for toxic waste sites to clean up their pollution
C. It helped boost the economy among those waste sites
D. It helped identify toxic waste site and move people away from them​

Answers

Answer:I’m stuck on the same question

Explanation:

✨Please help ✨due soon✨

Answers

Answer:

25%

Explanation:

i believe 25% because ita very rare

9. Place the events in the correct order:
1. DNA polymerase adds nucleotides in the 5' to 3' direction
2.Replication fork is formed
3. DNA polymerase attaches to the primer
4. Okazaki fragments are bound together by ligase
5. DNA helicase unwinds DNA
ligaset

Answers

The correct order of events of DNA replication is as follows:

DNA helicase unwinds DNAReplication fork is formedDNA polymerase attaches to the primerDNA polymerase adds nucleotides in the 5' to 3' directionOkazaki fragments are bound together by ligase

DNA REPLICATION:

DNA replication is the process by which the DNA of a living organism is multiplied into two identical copies.

DNA is a double-stranded molecule, hence, it must first be separated into two single strands in order to be replicated.

The following are the orderly steps involved in DNA replication:An enzyme called DNA helicase unwinds DNA into single strands. A Y-shaped structure called replication fork is formed by the two single strands.DNA polymerase attaches to the primer, which is a short segment of RNA. DNA polymerase adds nucleotides to the leading strand of DNA in the 5' to 3' directionOkazaki fragments, which are small fragments of DNA are bound together by ligase enzyme and added to the lagging strand.

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............................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

If the forces acting on two objects are the same, which object has greater acceleration? An object that is 200 kg or an object that is 400 kg? Text to speech

Answers

Answer:

Object with 200kg

Explanation:

Newton's second law of motion depicts how the acceleration of an object depends on the force (F) and mass of the object (m). This law can be represented by the mathematical equation: F = ma

However, the acceleration of the object is inversely proportional to the mass i.e. a = F/m. This means that an increase in the mass of an object causes a decrease in acceleration of the object and vice versa.

According to this question, If the forces acting on two objects are the same, an object that is 200 kg will have a greater acceleration than an object that is 400 kg. Note: the higher mass the mass, the lower the acceleration and the lower the mass, the higher the acceleration.

4. What is the probability that an offspring will have a yellow seed? (1 poin
25%
37.5%
075

Answers

the offspring has 075 probability of having a yellow seed
75% chance of that happening

1. What is the pH range for an acid?

A. 0 - 7- 14



2. What is the pH range for a base

A. 0 - 7- 14



3. What are the products of an acid base reaction?

A. water and salt

B. acid and base

C. water and sugar

D. water



4. What substance has a neutral pH?

A. ammonia

B. water

C. sodium bicarbonate

D. vinegar



5. The negative ion found in bases is the ______________

A. hydrogen ion (H+)

B. hydroxide ion (OH-)

Answers

Answer:

0-7-14

0-7-12

c is correct water and suger

d is correct vinegar

b is correct (OH-)

what do eukaryotic cells and viruses have in common?​

Answers

Answer:

Just search it up

Explanation:

Hello There!

What do viruses have in common with eukaryotic cells?

-Viruses are not cells, but they do have certain things in common.

Viruses & Eukaryotic cells :-

1.Contain DNA, but not much.

2.Can not reproduce by themselves.

3.Have important features such as nucleic acid gnomes.

4.Have genetic variations and can certainly evolve.

Hope This Helps!

Thank you!!! Good Day! ♡

How can you die from drinking water

Answers

Answer:

hyponatremia

Explanation:

Answer:

choke, poison

Explanation:

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