Answer:
The correct answer is -
A. 12.5%
B. 105 grams.
Explanation:
Half-life is the amount of time requires to decay or convert half of the atoms of the compound or element. It is denoted by the t1/.
In this question, it is given that an element has a half-life of two days which means it becomes half of the initial amount in two days.
A. So, after six days the percentage of the amount remaining that would be
= 50*1/3
(6 days = three half-life cycle) and (one-half cycle = 50% of initial value)
= 12.5% of its initial value.
B. If the original amount of the element was 120 gram then the amount of element that decayed in six days would be:
= Initial value - remain value
= 120 - (120*12.5/100)
= 120 -15 grams
= 105 grams.
What is actually cycled in a web of organisms?
Answer:
Carbondioxide gas.
Explanation:
Carbondioxide gas is actually cycled in a web of organisms, The plants takes carbondioxide gas for the process of photosynthesis, this plant is eaten by herbivores for energy and carbondioxide is released in the process of respiration. After that, carnivores feed on these herbivores and oxygen is used in the breakdown of food for releasing energy and carbondioxide gas is also released from the body through breathing so the cycle of carbondioxide gas is continue.
In which choices are the entries listed from largest to smallest
A: gene-cell-DNA-building block
B: chromosome-genome-DNA building block
C: genome-gene-nucleotide base
D:DNA building block-gene-chromosome-genome
___________ It is a process in producing garden soil that will remove unwanted particles
to be a part of the garden soil. write your answers in small letters.
Answer:
Adding organic matter or growing cover crops
Explanation:
Adding organic matter or growing cover crops in the form of aged manure to the soil is a process used in producing garden soil and this is because not only will the compost make the land good and fertile it will also makes the garden soil friable unlike the application of fertilizer
The function of platelets is all of the following except:
A.they help form blood clots
B.they help a blood vessel repair itself •
C. they carry oxygen to injured areas of tissue
D. they secrete vasoconstrictors which promote vascular spasms
Answer:
C
Explanation:
They does not carry oxygen to injured areas of tissue
Summary how the fast carbon cycle works?
Answer:
here is your answerExplanation:
Any change in the cycle that shifts carbon out of one reservoir puts more carbon in the other reservoirs. Changes that put carbon gases into the atmosphere result in warmer temperatures on Earth. This diagram of the fast carbon cycle shows the movement of carbon between land, atmosphere, and oceans.4
At what trophic level do decomposers obtain their energy?
Which part of the Na /Glucose symporter in the apical surface of an epithelial cell would you mutate so that it can transport fructose instead of glucose into the cell
Answer:
The binding site for glucose
Explanation:
Symporters are integral membrane proteins that control the entry and exit of a specific type of molecule across the cell membrane in a mode that is dependent on the transport of a second specific type of molecule in the same direction. Symporters are membrane cotransporter proteins involved in active transport, i.e.., they require energy (usually in the form of ATP) to transport substances in the same direction. The Sodium (Na+)-Dependent Glucose Transporter 1 (SGLT1) is a cotransporter involved in the transport of glucose across cell membranes of enterocyte intestinal absorptive cells. For such purpose, SGLT1 contains two Na+-binding site sites, one of them overlapping the glucose-binding site. It has been shown that mutations at the glucose-binding site may alter the ability of SGLT1 to transport glucose.
Oxygen crosses the cell membrane by
Answer:
diffusion
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ).
Explanation:
What is the region of rapid cell division (growth) in plants with a process known as mitosis?
Please help
Explanation:
They grow through a combination of cell growth and cell division (mitosis). The key plant growth is meristemn, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Meristem allows plant stems and roots to grow longer (primary growth) and wider ( secondary growth ).
Question 1- Name 2 ways that humans affect land ecosystems.
Help plzzzzzz I need helppp
Which of the following are mixtures?
SELECT ALL THAT APPLY
a
sand
b tea
ws
C water
d
oxygen
e
copper
f
air
Answer:
air, oxygen, water, sand. and tea
Answer: Air, Sand, and Tea
Explanation:
If i’m measuring how much water has increased in a cup as ice melts and i mark the side of the cup as measurement, what is my independent and dependent variable?
Answer:
Dependent variable - increase in water level
Melting rate of ice - independent variable
Explanation:
Independent variables usually refers to the set of conditions, values or constraint used or adopted by an experimenter or researcher in other to cause a change in the measured variable also called the dependent variable.
The independent variable is therefore purposely used to depict or show changes in the dependent variable. The dependent variable is the measured variable whose behavior or output lies on the value of the independent variable.
In the scenario above, the dependent variable is the increase in water level,as it is what is being measured. And it is dependent on the Melting rate of ice, which is the independent variable.
That is change in water level in the cup, depends on the rate at which ice melts
Decline of pollinators will have a severe impact on nature and mankind. why?
please answer and I will mark you as brainlist.
Answer:
Globally we are witnessing a decline in pollinators, such as wild bees, honeybees and hover flies, caused by the destruction and fragmentation of habitats, agricultural intensification and use of pesticides, introduction of novel diseases and competing alien species, and climate change
Which of the following best matches a part of a living cell with the function it performs?
Cytoplasm: green structure inside plant cells
Nucleus: green structure inside plant cells
Cytoplasm: directs all of the cell's activities
Nucleus: directs all of the cell's activities
Answer:
Nucleus: directs all of the cells activities
=~
Explanation:
I took the exam and its correct!! I take FLVS this is the 4.00 Pretest or 4.01 for science right? Any who I got it right so go get em babes!!
Jorge wants to model two processes from the water cycle in the atmosphere for a class project. He began to fill a self-sealed bag half full of water. After sealing it, he tapped it into the window. After a few hours, water beaded along the sides of the bag. Which processes are represented by Jorge's model?
A.transpiration and respiration
b.respiration and evaporation
c.evaporation and condensation
d. condensation and crystallization
Meat sharing can be considered an example of cooperation among primates. Which of the following is NOT a cooperative behavior observed among primates?
a. warning calls
b. nut cracking
c. grooming
d. group hunting
e. caring for a subadult by someone other than the mother
Answer:
e.
Explanation:
The correct answer would be caring for a subadult by someone other than the mother.
Cooperation or cooperative actions are those actions that are carried out by two or more individuals in order to achieve a common goal or goals.
Warning calls are carried out by one or two individuals in order to warn those around of a particular danger. Nut cracking among primates requires the collective efforts of many individuals. Grooming is a social behavior among primates that requires the cleaning up and maintenance of boy hygiene of an individual by another individual. Group hunting involves the collective efforts of a group of primates.
The only option that does not require cooperation is caring for a subadult by someone other than the mother.
The correct option is e.
How do decomposers convert energy for an ecosystem
Answer:
they convert dead organic compounds into reusable organic compounds.
Explanation:
Answer:
They convert dead organic compounds into reusable organic compounds.
Explanation:
I got right in my test :)
what would happen if camels were to be extinct
Answer and Explanation:
People who live/ are in the deserts will have no where to move there things because they use camels as transportation...
What is electricity ? Ashaking and moving of particles B heat transfer between objects touching C hot or cold an object is D flow of negatively charged particles
Answer:
D
Explanation:
If you used a slingshot to launch a bowling ball and a baseball with the same force, which would go further? Explain your reasoning.
Answer: The baseball will go farther because of Newton's law. The more mass an object as, the more force needed to move it. The bowling ball has more mass than a baseball so more force is needed to move it.
Explanation:
A__ forms when a volcano collapses in on itself.
Answer:
A caldera
Explanation:
This forms when a volcano collapses in on itself.
Have a nice day and hope this helps.
Answer:
A caldera forms
Explanation:
A sedentary organism is one that can swim great distances in aquatic environments
A. True
B. False
Answer: i believe it is true
Explanation:
I Using the key choices, identify the cell type(s) or blood elements that fit the following descriptions. Insert the correct term or letter response in the spaces provided. Key Choices A. Red blood cell D. Basophil G. Lymphocyte B. Megakaryocyte E. Monocyte H. Formed elements C. Eosinophil F. Neutrophil I. Plasma _________________________ 1. Most numerous leukocyte _________________________ 2. ___________________ 3. ___________________ 4. Granular leukocytes _________________________ 5. Also called an erythrocyte; anucleate _________________________ 6. _________________________ 7. Actively phagocytic leukocytes _________________________ 8. _________________________ 9. Agranular leukocytes _________________________10. Fragments to form platelets _________________________ 11. (A) through (G) are examples of these _________________________12. Increases during parasite attacks _________________________13. Releases histamine during inflammatory reactions _________________________14. After originating in bone marrow, may be formed in lymphoid tissue _________________________15. Contains hemoglobin _________________________16. Primarily water, noncellular; the fluid matrix of blood _________________________17. Increases in number during prolonged infections _________________________18. Least numerous leukocyte
Answer:
NeutrophilNeutrophilEosinophilBasophilRed blood cellMonocyteNeutrophilMonocyte LymphocyteMegakaryocyteFormed elementsEosinophilBasophilLymphocyteRed blood cellPlasmaMonocyteBasophilExplanation:
A. Red blood cell: Blood cell that is a product of the medulla. These cells contain hemoglobin that carries oxygen from the lungs to the rest of the body.
B. Megakaryocyte: Big cell easy to recognize for its size. Differs from other cells for being polyploid, growing by endomitosis, and being bigger. They have important biological functions. The most important one is the formation of plaquettes, necessary for hemostasia, damaged vessels reparation, and tissue healing.
C. Eosinophil: Granulosites. Immune System cells, active during infections, pathologies, inflammations, and allergies. Originated in the medulla and transported to the blood and organs. One of their functions is to defend the organisms from parasite infections, helping to destroy the pathogen.
D. Basophil: Granulosites. Immune System cells. in the medulla and transported to the blood. Only when there are parasite infections they can be present in tissues and organs. They release substances such as histamine that make possible the inflammatory process.
E. Monocyte: Agranulocyte phagocyte. Originated in the medulla and transported to the rest of the body. They differentiate into macrophages in tissues. They defend the body from bacteria and viruses. When monocyte values are elevated, usually means that there is an important process of infection.
F. Neutrophil: Phagocytic Leucocytes polymorphonuclear found in the peripheric blood. Compose the first defense line against bacterial and fungal infections. Product of the medulla and transported to the blood. They are the first to arrive at the affected tissue, followed by lymphocytes and macrophages.
G. Lymphocyte: Leucocyte. There are two types of lymphocytes: B cells, which can produce antibodies in the presence of bacteria, viruses, and toxins. T cells can destroy infected cells from the body. They all circulate in the blood.
H. Formed elements: Elements that might be found suspended in the plasma. These include all the mentioned cells and cell fragments
I. Plasma: Transparent, acellular, and kind of yellow liquid that represents 55% of the blood volume.
how to do the table A: grass data
may be a diagram like histogram or bar graph can u be more descriptive and image maybe
does the the cambrian explosion refer to a rapid increase in volcanic activity
What is photosythesis?
Answer:
Photosynthesis is the process by which plants use the energy from sunlight, carbon dioxide, and water and convert them into food. In other words, it is basically when a plant cooks its' food.
Have a great day or night, or whatever else it could possibly be. Enjoy the answer and do well on the tests. Bye!
Photosynthesis is when green plants use sunlight to create food from carbon dioxide and water.
Hope this helps! Please mark me as brainliest!
Have a wonderful day :)
Determine a relationship between the x- and y-values. Write an equation.
Х
1
-3
2
-8
у
3 4
-18
13
Answer:y = y = -5x + 2
Explanation:
Y = (y2-y1)(x2-x1) x + b = mx + b (b is the y-intercept)
= (-8+3)/(2-1)x + b = -5x + b
to find b
when x = 0, y=b = 2
(could draw graph to make clear)
this is a straight line: the slope shows that for any x0, y1 = y0 - 5
Look at the diagrams below. They show steps in the sequence of replication.
The steps of this sequence happen in what order? A)4,1,2,3 B)4,2,3,1 C)4,3,2,1 D)4,1,3,2
Answer:b
Explanation:
Answer:
D: 4,1,3,2
Explanation:
What is "crossing over" ?
Answer:
Crossing over is the substitution of genetic material in the germline. When egg and sperm cells, also known as meiosis, are formed, paired chromosomes are arranged from each relative in such a way that identical DNA chromosome sequences cross over each other.
Explanation:
Crossing resulting in genetic material shuffling is a significant cause of the genetic difference between descendants.