BIOLOGY HIGH SCHOOL

What do scientists estimate is the approximate age of the planet earth?

Answers

Answer 1
Answer: 4.6 billion years old
Answer 2
Answer:

Answer:

4.6 billion years

Explanation:

Related Questions

Baker's yeast is a single-celled ascomycete that is used in bread making. Why does yeast make bread dough rise?
A wombat is a marsupial native to which country?
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Which state of matter is least likely to transfer heat by convection?solid liquid gas plasma
The downfall of a tragic character is the result of __________.chancea tragic flawthe antagonistpoverty

What are the "chemical messengers" that coordinate and direct specific activities of the body?

Answers

The correct answer is hormones.
Hormones are signaling molecules which are produced by glands and transported by the circulatory system to the target organs. The functions of the hormone are very diverse, they regulate physiology and behavior. Hormones have different chemical structures, eicosanoids, steroids, and amino acid/protein derivatives. The hormones can be the part of the endocrine signaling system (transported via blood). or produced by cells that affect the same cell (autocrine or intracrine signaling) or nearby cells (paracrine signaling).

Why is diffusion and osmosis important to the cell

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uses energy to move substances against (up) a concentration gradient or across a partially permeable membrane. In active transport a special transport protein in the cell membrane picks up the useful particle on one side of the membrane. The transport protein then rotates through the membrane and releases the particle on the other side of the membrane. This uses energy from cellular respiration.

Photo 51 is a picture of the structure of DNA that was used to create a model of DNA. Who created the photo?James Watson and Francis Crick
Erwin Chargaff
Rosalind Franklin
Friedrich Miescher

Answers

DNA stands for deoxyribonucleicacid. It has a double strand that contains the genes (a hereditary material) ofthe organism. It was discovered by James Watson and Francis Crick. Their double-helixstructure was based on x-ray diffraction image named as Photograph 51 or Photo51. It was taken by Raymond Gosling, a pHD student under the supervision ofRosalind Franklin. They used this photo to determine the chemical and physicalstructure of the DNA and the bond that links the genes altogether. The answer is Rosalind Franklin

Answer:

C. Rosland Franklin

Explanation:

edge 2023

How often does oxygen cycle through the atmosphere?a. about every 1000 years
b. about every 1500 years
c. about every 2000 years
d. about every 2500 years

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about every 2000 years.

B. about every 2000 years

describe the three steps in urine formation. include a definition of the molecules involved during each step, as well as the process involved (active or passive transport)/

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Urine forms as some of the blood plasma spills out, some of these spilled plasma components are taken back up into the blood, and other material is selectively sent out to be added to the urine. In other words, there are three main things happening to form urine. 
glomerular filtration (blood plasma spills out) bullet tubular reabsorption (some items are selectively reabsorbed into the blood) bullet tubular secretion (some blood plasma items are selectively sent out into the tubules)

What is the symbol equation for aerobic respiration?

Answers

The symbol Equation for aerobic respiration is:

                           cellular respiration

C6 H12 O6 + 6o2----------------------------> 6Co2 + 6H2O + 36ATP
Hey There Maiam,

What is the symbol equation for aerobic respiration?

Answer: 1. Aerobic Respiration. It is important that you learn both the word and chemical equation. In the above equations we see that glucose is broken down by oxygen to release energy with carbon dioxide and water being produced as by-products of the reaction
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All of the different species of fish in the Monterey Bay aquarium would represent what ecological level?
If a tRNA molecule has an anticodon which reads CAG, what was the codon on the mRNA molecule?
The Earth’s core is made of an alloy ofA. iron and nickel. B. copper and iron. C. zinc and magnesium. D. iron and zinc.
The human cardiovascular system is considered closed because __________.a. blood is continuously circulated in the body. b. blood provides nutrients to organs. c. blood collects oxygen from the lungs d. there are no holes for blood to enter or leave the system