1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Korolek [52]
3 years ago
7

A sample of Carbon-14 originally contained 100 g. After three half-lives have

Biology
1 answer:
otez555 [7]3 years ago
3 0

Answer:

After 3 half lives 12.5 g of C-14 left

Explanation:

Given data:

Mass of C-14 = 100 g

After 3 half lives mass left = ?

Solution:

At time zero = 100 g

At first half life = 100 g/2 = 50 g

At second half life = 50 g/ 2 = 25 g

At third half life = 25 g/2 = 12.5 g

Thus, after 3 half lives 12.5 g of C-14 left.

You might be interested in
1. Name a protein that carries vital materials throughout the body.
mrs_skeptik [129]

Answer:

RBCs contain hemoglobin (pronounced: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts.

Explanation:

Hope this helps.

8 0
3 years ago
Plz help me <br> WILL GIVE BRAINIEST
Illusion [34]

Answer:

The correct answer to this question should be a drup called antibiotics.

In our case, we need to look for something that helps us deal with bacteria infection, or in other words, treating diseases caused by bacteria. A drup that interfers with viral DNA is responsible for treating a kind of virus that basically  attack DNA to live. And I would consider the drug that moderates you use of sugar should be used to solve problem related to the amount of sugar in your body, maybe diabetes. Antibiotics is especially designed to kill bacteria, so it is the correct answer.

7 0
3 years ago
A person who sprints for 45 seconds obtains most of his or her energy from _______. multiple choice
ArbitrLikvidat [17]

A person who sprints for 45 seconds will obtain most of his or her energy from muscle glycogen.

<h3>Energy metabolism during sprints</h3>

During sprinting or highly intense exercise activities, blood glucose is rapidly consumed. Rapid consumption of blood glucose may breach the blood glucose set point.

In order to maintain blood glucose homeostasis, glucose stored as glycogen in the muscles is converted back to glucose. The glucose is then utilized to produce ATP for the sprint or exercise.

Thus, a person who sprints for 45 seconds will have to obtain most of their energy from the glycogen stored in the muscles.

More on glucose metabolism can be found here: brainly.com/question/4707439

#SPJ1

A) muscle triglycerides.

B) plasma free fatty acids.

C) blood glucose.

D) muscle glycogen.

3 0
1 year ago
SUPER EASY BRAINLYIEST Buffer systems in the body maintain proper pH balance in order for life processes to proceed. Proteins fo
natka813 [3]
The answer is C

hope that helps! :)
6 0
3 years ago
The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of?
kogti [31]

The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of ​LDL.

  • The accumulation of lipids, cholesterol, and other chemicals in and on the artery walls is known as atherosclerosis. The accumulation is known as plaque.
  • The build-up of lipids and fibrous components in the major arteries is a hallmark of the degenerative illness known as atherosclerosis. A picture of a typical artery's anatomy can be found in Foam cells, or subendothelial accumulations of cholesterol-engorged macrophages, are the earliest lesions of atherosclerosis.
  • Nitric oxide and prostacyclin are two chemicals that are produced by your endothelium. These maintain the fluid in your blood and stop it from clotting when it shouldn't. These compounds' insufficient production is a symptom of various diseases, which raises your risk of clotting.

To learn more about atherosclerosis.

brainly.com/question/1382544

#SPJ4

6 0
2 years ago
Other questions:
  • "the adrenal medulla secretes more norepinephrine than epinephrine." <br> a. True <br> b. False
    10·1 answer
  • How are human beings and chimpanzees phylogenentically related
    15·1 answer
  • What is nucler transfer used for
    6·1 answer
  • Why the tropical forest has a more lush plant life than the tundra in regards to how fast things decompose.
    6·1 answer
  • In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant all
    8·1 answer
  • Yo can someone help me out
    6·2 answers
  • What is a pesticide?
    6·1 answer
  • Question 18
    14·2 answers
  • Why is the line graph a curve instead of a straight line?
    6·1 answer
  • Indicater I need the meaning
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!