The cell theory consists of:
1. all living organisms are made up of cells
2. cells are the basic structural/organizational unit of all organisms
3. all cells come from pre-existing cells
If the half-life of a radioactive substance is 500 million years and you have
192 atoms of it, how many half-lives will have passed by the time that only 3
atoms of the substance remain?
A. 4
B. 5
C. 6
D. 2.
The number of half-lives that has elapsed when 3 atoms of the radioactive substance remains is 6 (Option C)
Data obtained from the questionHalf-life (t½) = 500 million yearsOriginal amount (N₀) = 192 atomsAmount remaining (N) = 3 atoms Number of half-lives (n) =?How to determine the number of half-lives2ⁿ = N₀ / N
2ⁿ = 192 / 3
2ⁿ = 64
2ⁿ = 2⁶
n = 6
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What is the purpose of meiosis?
Answer:
to produce gametes
Explanation:
The purpose of meiosis is to allow the production of genetically distinct haploid daughter cells from a diploid parent cell.
Which are characteristics of carbon? Check all that apply.
Explanation:
Terms in this set (5)
carbon is abundant, common.
forms strong covalent bonds.
has four valence electrons.
variety of shapes.
bonds with multiple elements
Answer:
- Covalent bonding
- Generally in non-electrolytes
- Low melting point
- Forms a variety of compounds
Explanation:
Edge 2021
Transform plate boundaries are characterized by long faultlines and shallow earthquakes.
O True
O False
Why would it be hard to find the ideal CO2 level if the light intensity were very low?
It would be difficult to find the ideal CO2 level with a low light intensity because the plant will have a difficult time trying to survive.
How can an individual help to fight against air pollution?
They can protest to use safer sources of energy like power plants.
Which of the following consists of an amino group, a carboxyl group, and a
side chain?
A. DNA
B. An amino acid
C. A nucleotide
D. A carbohydrate
Answer:
An amino acid
Explanation:
which statement about the cells of organisms is accurate?
A. plants are unicellular organisms and carry out functions of life.
B. All organisms are multicellular and carry out similar functions of life.
C. The single cell of a unicellular organism carries out all functions of life.
D. The single cell of a unicellular organism can have specialized functions.
Answer: HI I think i can help You!
B is the correct answer
Explanation:
C is the correct answer!
2. How do you think heart and kidney transplants compare to other transplants, such as of the lungs?
I really don't no chile
The dashed lines between the two bases represents.
Answer:
Weak hydrogen bonds
Explanation: Hydrogen bonds between the bases hold the two strands together.
What is the function of a channel of protein
1. Substances out of the cell
2. Make phospholipids
3. lung infections
4. Contain the cells DNA
5. DNA
Answer:
its contain the cells DNA
if skeletal muscles worked like cardiac muscles, how would your body's motion change?
Answer:
The integrated action of joints, bones, and skeletal muscles produces obvious movements such as walking and running. Skeletal muscles also produce more subtle movements that result in various facial expressions, eye movements, and respiration.
Which of the layers has the most interaction with the other spheres of Earth?
Mantle
Inner Core
Crust
Outer Core
Answer:
Crust
Explanation:
Crust has the most interaction with the other spheres of Earth.
Cual es mi nota 80\68.Panama
Explanation:
81.
pasando los 50 puntos de la segunda parte ya se considera un punto más.
3.- De esta imagen podemos concluir de las
ondas, que:
be
PC
A - Todas tienen la misma amplitud de onda
B.- La frecuencia de A es menor a la de o
C.- Todas tienen la misma frecuencia
D.- Todas tienen la misma longitud de onda
Answer:
Explanation:
B
The Pedigree below tracks colorblindness through a family.
What does a circle represent?
O Female
O Carrier
Child
O Male
Define the process of respiration.
Answer:
The process of inhaling(breath in) and exhaling (breath out) of oxygen and carbon dioxide is called respiration .I hope it helps
have a great day mate! :)
[tex]#Captainpower[/tex]
Answer:
The process by which cells use oxygen to break down sugar and obtain energy.(Hope this Helpful....)Structures and behaviors for animals to obtain food
Select one:
a.
Adaptations
b.
Respiration
c.
Digestion
Answer:
B. Adaptations
Explanation:
In the world of purple people eaters, one eye (E) and one horn (H) are dominant traits. Purple people eaters
can also have two eyes (e) and two horns (h), which are recessive traits.
Perform a dihybrid cross among a male who is heterozygous for both traits and a female
who is heterozygous for both traits. Use the results for your prediction below.
HOW MANY TWO-EYED ONE-HORNED PURPLE PEOPLE EATERS ARE THERE?
Answer:
3
Explanation:
Male ; EeHh
Female ; EeHh
Then,
possible gametes for each = EH / Eh / eH / eh
where,
EH Eh eH eh
EH EEHH EEHh EeHH EeHh
One eye One eye One eye One eye
One horn One horn One horn One horn
Eh EEHh EEhh EeHh Eehh
One eye One eye One eye One eye
One horn Two horn One horn Two horn
eH EeHH EeHh eeHH eeHh
One eye One eye Two eye Two eye
One horn One horn One horn One horn
eh EeHh Eehh eeHh eehh
One eye One eye Two eye Two eye
One horn Two horn One horn Two horn
Therefore,
One eye, one horn:One eye, two horn:Two eye, one horn:Two eye,two horn
is,
9 : 3 : 3 : 1
This ration proves that the above working is correct and is dihybrid cross.
What is the advantage of having air spaces within leaves?
Explanation:
The air spaces within the leaves help in exchange of gases and also help in transpiration
What is the most common type of desalination plant in the world?
Answer:
The Hadera seawater reverse osmosis (SWRO) desalination plant in Israel is the largest seawater desalination plant in the world.
From HIPPO, which one causes the most loss of biodiversity and explain why??
Answer:
There are many threats to biodiversity today. The biggest ones can be remembered by using the acronym H.I.P.P.O.: Habitat Loss, Invasive Species, Pollution, Human Population, and Overharvesting.
The sex of an offspring is determined by
O the father.
O both parents.
O the offspring
o the mother.
I NEEED HELP AS QUICK AS POSSIBLE!!!
Answer:
It will maybe be B or CCuase ik it's not A or D
The pH of 1 to 6 is basic
true or false
Answer:
False
Explanation:
Answer:
False
Explanation:
PH is acidic between 0 and 7, and basic when it is over 7.
7 is neutral.
At what point on the graph is the carrying capacity of rabbits reached?
Answer: 60
Explanation:
Which of the following is NOT a function of Keratinocytes.
Explanation:
babanaj mamlalai kaakk
The following diagram shows the branching tree diagram for some animals. (5 points)
A slanting line is shown. There are five lines drawn vertically on this line at equal intervals. Shark, Frog, Kangaroo, Lion and Chimpanzee are written on top of each vertical line in order from left to right. Common Ancestor is written on the left end of the line. There is a black circle between each pair of these vertical lines. The first black circle is before Shark and says Vertebrae. The second black circle is between Shark and Frog and says Lungs. The third black circle is between Frog and Kangaroo and says Mammary gland. The fourth black circle is between Kangaroo and Lion and says Placenta. The fifth black circle is between Lion and Chimpanzee and says Large brain.
Which two organisms share the least number of derived characteristics?
Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee
Answer:
I think the Answer is shark and chimpanzee Edit: Just rechecked my Answer this is the correct answer
Sorry for being late :(
Answer:
a
Explanation:
1. What is one similarity between human skeletal muscles and some bacteria? *
Answer:
Both produces lactic acid when oxygen is not available for respiration.
Explanation:
1. Which of the following is the template for the production of RNA within a cell?
DNA
ATP
Protein
Carbohydrate
Question 18
1 pts