Answer:
After 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
Explanation:
The half-life of a radioactive isotope of an element is the time taken for half the atoms present in a given amount of the element to undergo decay or disintegration. For example, the half-life of carbon-14 isotope is 5730 years. This means that, if there are 100 atoms of carbon-14 present in a given sample of a material, in the next 5730 years, approximately, 50 atoms of carbon-14 will be left in the material.
Since the half-life of radioactive isotopes are constant, these radioactive isotopes are used in the determining the ages of ancient life-forms as well as rocks.
In the given example, after 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
The least numerous but the largest of the papillae are arranged as a V-shape on the posterior dorsal surface of the tongue. They contain the majority of taste buds and are called ________ papillae. The least numerous but the largest of the papillae are arranged as a V-shape on the posterior dorsal surface of the tongue. They contain the majority of taste buds and are called ________ papillae. papiform filiform fungiform vallate foliate
Answer:
The least numerous but the largest of the papillae are arranged as a V-shape on the posterior dorsal surface of the tongue. They contain the majority of taste buds and are called vallate papillae.
Explanation:
The shape, location and function of these taste buds make vallate papillae unique. First, they have a distinctive "v" shape, and most adults only have seven to twelve of these papillae, vallate papillae are the least numerous papillae, they are the recipients of the bitter taste. The vallate papillae are the largest and the most specialized, they are located on the back of the tongue, forming the lingual V, in a variable number from 7 to 12. The number of taste buds depends on age, presenting around 270 in the newborn and descending approximately one hundred in individuals older than 75 years. These buttons are located in the crypts or grooves that form the papillae, mainly on their internal face (the annular groove is observed between the papilla and the edge of the calyx), in whose edges the extremities of the taste corpuscles stand out in the form of filaments. Each taste corpuscle comprises two classes of cells: supportive and taste cells.
The largest but least numerous papillae in the dorsal surface of the tongue is Vallate papillae.
Vallate papillae:
These are specialized taste buds that present in the posterior dorsum of the tongue.
They are the largest taste buds. They form a 'V'- shape structure.There number can vary between 7- 12.Therefore, the largest but least numerous papillae in the dorsal surface of the tongue is Vallate papillae.
To know more about Vallate papillae
https://brainly.com/question/10733985
1. Direction: Choose and write the letter of the correct answer on the space provides
16. Veich is used for sing four?
a. eggbeater
b. four sier
o .spettal
17. Which is include a inte and chopping board.
a puting tools b. pastry blender c. peeler
d. strainer
18. Which is used to separate the firer particles from the coarser particles of ingredients?
a grate
c.sk
19. Which is a unit of weight and measure which is equivalent to 1 pound?
a. 16 ounces
b. 1pint
d. 1 gallon
20. Which measurement to serve as your substitute for honey?
a.2 T. four
b. 3 T. cocoa + 1 T. fat
c. 12 T. comstarch
d.1%C. sugar + % C. water
21. Which is used ble
el ingredients when measuring dry or solid ingredients?
b. spoon
c. spatula
22. Which is not to be done with the cup when measuring liquid ingredients?
an the cup b. pack the cup c. shake the cup
d. tap the cup
23. Which is used for cuting bread?
2. butler knite
b. chefs Knie
c. paring knife d. serrated knife
24. Which is used for draining liquid from can fruits and vegetable?
2. colander
b. four sifter
c. pastry cloth d. strainer
25. Which is a product can be made by mixing lemon juice, baking soda and vinegar?
a baking soda
b. borax
c. cleaning paste d. tea tree oil
26. Which is used to sterilize tools and equipment?
a. boing water
b. cold water
c. distilled water d. warm water
27. Which term used to describe something that has a potential to cause harm?
b. airbome
c. hazard
d. risk
Answer:
its a test its a test
Explanation:
Is this a test is this a tetstis this a test is ti
what level of an organism is the stomach?
Answer:
The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
A STOMACHE IS AN ORGAN!!!!
An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function.
_____________________________________[tex]\Huge\text{Levels of Biological Organization}[/tex]Cell - The smallest unit of life. Example: Red Blood Cell Tissue - A group of similar cells that perform a specific function. Example: Muscle Tissue Organ - A structure within an organism usually composed of several tissue types that form a functional unit. Example: Stomach Organ System - Two or more organs working together in the execution of a specific bodily function. Example: Respiratory System Multicellular Organism - An individual living thing. Example: A single H.o.m.o Sapiens(Human Being). Species - Very similar, potentially interbreeding organism. Example: All cats, dogs, humans. Population - Members of one species inhabiting the same area. Example: Population of people living in USA Community - Two or more populations of different species living and interacting in the same area. Example: Cats and Hooomans living together in the same area or house. Ecosystem - A community together with its non-living surroundings. Example: Pond Ecosystem Biosphere - Different Ecosystems altogether makes Biosphere. Example: Planet Earth is biosphere_____________________________________Best Regards,'Borz'Aaminah saw a sparrow eating a caterpillar. She also noticed that the mango tree in her garden was covered in caterpillars. A food chain linking these organisms is: *
choose one of these
Caterpillars -> Mango tree -> Sparrow
Mango tree -> Caterpillar -> Sparrow
Mango tree -> Sparrow -> Caterpillar
Sparrow -> Caterpillar -> Mango tree
Mango tree > Caterpillar > Sparrow
The first level in a food chain should be a primary producer which is the mango tree.
The second level in a food chain should be Primary consumer which is the caterpillar.
The third level in a food chain should be the secondary consumer which is the sparrow.
A food chain always starts from left to right. This from the primary producer then to the other levels. np
Fats and oils are rich in nonpolar covalent bonds, specifically C-C bonds and C-H bonds. What is the consequence?
Answer:
they become insoluble in water.
Explanation:
The many C-C and C-H bonds make fats nonpolar and insoluble in water.
The consequence is they become insoluble in water. The correct option is D.
What are fats and oils?One of the three macronutrients is fat and oil (the other two are protein and carbohydrates).
However, fats and oils differ from one another in that fats are primarily derived from animal sources, whilst oils are primarily derived from plant sources.
Because fatty acids are amphipathic, they have polar and nonpolar ends on opposite sides of their molecular structure.
Fat molecules known as monounsaturated fats have only one unsaturated carbon link (also called a double bond). Similar to olive oil, oils containing these fat molecules are liquid at room temperature and start to solidify when it becomes cold.
Therefore, the correct option is D. they become insoluble in water.
To learn more about fats and oils, refer to the link:
https://brainly.com/question/11587174
#SPJ6
The question is incomplete. Your most probably complete question is given below:
They become hydrophilic
They are able to form bilayer membranes
they become soluble in water
they become insoluble in water
The leave of a plant fold inward when it touched as a way to defend themselves from potential harm. What kind of response do the leaves demonstrate.
Answer:
thigmonasty response
i might be wrong but im not sure
Explanation:
Answer: A. Nastic response
List in order the various fluid compartments that a glucose molecule would encounter beginning with absorption from the lumen of the intestine and ending with the glucose molecule entering a skeletal muscle cell.
Answer:
The correct list of compartments glucose enter is :
The lumen > plasma (extracellular fluid) > interstitial fluid (extracellular fluid) > the skeletal muscle cell (intracellular fluid)
Explanation:
The glucose molecule would start from the lumen of the intestine where is absorbed. The glucose enters the plasma a part of the circulatory system known as extracellular fluid.
The glucose also encounters another type of extracellular fluid the interstitial fluid that is not in the circulatory system. At the last glucose as it is entering the skeletal muscle cell the last fluid compartment, which is intracellular fluid. This fluid is inside the cells.
Skeletal muscles are the elongated and elastic cells and fibers also known as the sarcolemma that have numerous nuclei in the periphery of their cells. They are majorly found in the diaphragm, throat, eyes etc.
The correct order of the compartments in which the glucose enters is lumen, plasma (extracellular fluid), interstitial fluid and the skeletal muscle cell.
How does the glucose flow from the digestive system to the muscles?Glucose is derived from the food and the nutrient molecule an organism intakes that reaches the lumen present in the intestine of the digestive system.In the lumen, the glucose molecules get absorbed and then enters the plasma that is the part of the circulatory system, which is also an extracellular fluid.In the plasma, the glucose also encounters the other extracellular fluids and then enters the skeletal muscle cells for providing energy which is the last fluid compartment and are intracellular fluid.Thus, the glucose enters the lumen, plasma, interstitial fluid and skeletal muscle cells.
Learn more about glucose absorption here:
https://brainly.com/question/14451688
Let me know, this question is 13 points.
Why would global warming have an effect on sea levels?
Answer:
ice caps melting would cause more water leading to higher sea levels
how would I order this.
Answer:
I hope this helps! I'm sorry if anything is wrong
Explanation:
Match the following explanations with the appropriate reasons for cellular reproduction.
Answer:
Organisms get larger and develop into different stages of life >> Growth and development
Heal wounds, replace damaged cells >> Replace cells
Organisms make more of the species to keep them from going extinct >> Reproduction
Explanation:
Growth refers to the irreversible process by which organisms/tissues/cells increase in size and mass. Moreover, development can be defined as the progression from earlier to later maturation stages (e.g. fertilized ovule develops into a seed that will produce a mature tree). Cell replacement is a natural mechanism that occurs when cells become aged or in response to external/internal damage. During cell replacement, cells are produced from other cells by cell division. Finally, reproduction is a key biological process by which organisms (called parents) produce new genetically related organisms (i.e., offspring). According to the mode of transmission of genetic information, reproduction can be divided into sexual reproduction (offspring are different from parents) and asexual reproduction (offspring are the same as parents).
why is it an advantage that bundle sheath chloroplast lack grana
Explanation\Answer:
Pack sheath chloroplasts don't contain grana (if present not many and poorly created). In mesophyll cells, the light needy response is supported. In group sheath cells, the light autonomous responses are supported. Huge measure of ATPs and diminished coenzymes are created in the mesophyll cells.
Crickets "chirp" by rubbing their wings or legs over each other. This phenomenon is known as stridulation. It is a means by which male crickets "call" to females to communicate their interest in mating. Frequency refers to the number of chirps that crickets produce during a period of time. Some have suggested that you can tell the temperature and the humidity based on how fast crickets chirp.
Required:
a. What is the effect of temperature on the frequency of cricket chirping? As the temperature rises, the cricket chirp occurs more rapidly therefore increasing.
b. What is the effect of humidity on the frequency of cricket chirping? As the humidity rises, the cricket chirp frequency occurs more rapidly therefore increasing.
Answer:
a. As the temperature rises, the cricket chirp occurs more rapidly therefore increasing. It is correct.
b. As the humidity rises, the cricket chirp frequency occurs more rapidly therefore increasing. It is incorrect. The increase in humidity does not affect the chirp frequency in crickets.
Explanation:
As temperature increases, the frequency of cricket chirp increases too. After listening to the audios, we can see that in the first audio, where the temperature is 14° Celcius, the frequency is 24 chirps in 15 seconds. In the second audio, with 19° Celcius, the frequency is 28 chirps in 15 seconds. In the last audio, where the temperature is 24° Celcius, the chirp's frequency is 34 chirps in 15 seconds. In conclusion, if the temperature increases, the chirps' frequency increases too.
As humidity increases, the frequency of the chirp does not. In the three audios, the number of chirps in 15 seconds was 20. We can conclude that humidity does not affect the frequency of chirps frequency.
DNA polymerase is the enzyme responsible for
a. joining Okazaki fragments
b. reading the RNA codes for proteins
c. forming new copies of DNA
d. breaking the double helix by disrupting the hydrogen bonds
Why is it important to be able to date fossils?
Answer:
so we can tell the time period of the fossils and learn more from what living things came before us
Explanation:
Dating of the fossils contributes to a clearer timeline of evolutionary history. Older methods of dating were more subjective, often an educated hypothesis based on the evidence available.
PLEASE THANK, RATE AND FOLLOW ME,
AND PLEASE MARK ME AS "BRAINLIEST" ANSWER
HOPE IT HELPS YOU
Salmon live in both fresh water and salt water during their lives. They are born in in fresh water but migrate out to marine waters for most of their life. Eventually, they return to the place they were born in fresh water to spawn. Changing between fresh water and salt water affects the balance of water in their body. Salmon have an internal control system called osmoregulation that restores the balance by negative feedback. This is an example of which characteristic of life
Answer: The question is incomplete because the options are not given. Here are the options gotten from another website.
A. adaptation
B. reproduction and development
C. response to the environment D. energy transformation
E. maintaining homeostasis
The correct option is maintain homeostasis which is C.
Explanation:
This is because salmon posseses adaptive physical characteristics that help it to suitably live both in freshwater and salt water. This is because homeostasis is the ability to resist any change in order to maintain body internal environment and this is a negative loop feedback. Organs of salmon work to control homeostasis but endocrine and nervous system engage more in maintain homeostasis.
The last option is correct.
The following information should be considered:
This is due to the sal-mon possessing adaptive physical characteristics that help it to suitably live both in fresh-water and salt-water. This epresent the ability to resist any salt-water in order to maintain body internal environment.Learn more: https://brainly.com/question/1979431?referrer=searchResults
What is this the definition of?
Reaction that disassembles polymers and absorbs water.
Answer:
Hydrolysis reactions use water to breakdown polymers into monomers and is the opposite of dehydration synthesis, which forms water when synthesizing a polymer from monomers. Hydrolysis reactions break bonds and release energy.
Which statement describes the most likely effect of rising sea levels on life?
O A Oceans will become less salty, and the populations of ocean organisms will increase.
OB. All the beaches will erode away, and coastal organisms will die as a result of losing their habitat
C Some low-lying coastal areas will flood and people living in these areas will have to find new places to live.
D. More freshwater will become available as ice sheets melt and increase groundwater levels.
What part of the chloroplast helps to absorb light in order for the plant to make its own food? Question 10 options: chlorophyll stomata guard cells photosynthotons
Answer: A please tell me if im right
Explanation:
Answer:
chlorophyll
Explanation:
hope i helped
Earth is made up of four systems: atmosphere, hydrosphere, geosphere, and blosphere. While each sphere covers a different
component of the planet, they are closely related to each other and interact often. An event in one sphere can cause dramatic
changes in another. Carbon is an element with a critical role in all four spheres. A student draws a model of the four spheres in
relation to the carbon cycle.
Carbon Cycle
Atmosphere
Cellular
respiration
Photosynthesis
CO2
V Hydrosphere
Biosphere
Energy
Ocean
Oil
Fossils
Geosphere
Shell
Which sphere, regarding carbon would be most immediately affected by a decrease in sunlight?
A Atmosphere
OB. Biosphere
O C. Geosphere
Answer:
A. Atmosphere
Explanation:
Atmosphere would be most immediately affected by a decrease in sunlight because sunlight is responsible for the photosynthesis in plants. if sunlight decreases, the photosynthesis reaction is also decreases in plants and less carbondioxide gas is used by the plant from atmosphere for making their food so we can say that atmosphere is greatly affected by the decrease in sunlight.
Х
10. Certain problems with the digestive system make it very hard for your0/1
body to digest all your food. Why would it be more difficult to exercise
when you have this kind of digestion problem?
You would not be able to sleep, which would make you too tired to exercise.
O
You would need to breathe in a lot more air because your body would have fewer x
molecules from food. This would allow for cellular respiration.
Your circulatory system could not deliver any of the molecules your cells need to
make energy for exercise..
Your cells would have molecules from air, but would not get enough molecules from
food. Both are needed for cellular respiration
Correct answer
Answer:
Your cells would have molecules from air, but would not get enough molecules from food. Both are needed for cellular respiration
Explanation:
When does DNA replication happen?
Interphase
Metaphase
Anaphase
Telophase
Answer: Interphase
Explanation: Interphase is the longest stage in the eukaryote cell cycle. During interphase, the cell acquires nutrients, creates and uses proteins and other molecules, and starts the process of cell division by replicating the DNA
What would be the complementary DNA produce
Help please ???????
How can natural selection account for the long tongues of butterflies?
Which system does NOT have to do with excretion?
1.(Urinary)
2.(Skin)
3.(Lymphatic)
3.(Respiratory)
Answer:
lymphatic
Explanation:
HELP ASAP
What factor would not affect the island lizard gene pool once they reached the mainland?
O New and diverse ecosystems
Major island storms
New populations of lizards to breed with
Separation from the island lizard population
Answer:
c new populations !
Explanation:
easy
Answer:
Major island storms
Explanation:
The ______ function of the nervous system is to gather ______ information and make decisions that affect ______ functions.
motor; integrative; sensory
motor; sensory; integrative
integrative; sensory; motor
Explanation:
integrative; sensory; motor
hope it helps!
which piece of equipment will be the best for measuring 75 mL of liquid?
A.) 250 mL Breaker
B.) 100 mL Graduated Cylinder
C.) 400 mL Overflow cup
Answer:
The correct answer is 25 mL graduated cylinder (it should be used in all the cases)
Explanation:
Hope this helps
From,
1kvibing
The BEST piece of equipment for measuring 75 mL of liquid will be a 100 mL Graduated Cylinder (Option B).
In a laboratory, beakers, flasks, and graduated cylinders are instruments that can contain a liquid.From the options above, a 100 mL Graduated Cylinder is the most similar amount of liquid and therefore it will have the most accurate measure.In conclusion, the BEST piece of equipment for measuring 75 mL of liquid will be a 100 mL Graduated Cylinder (Option B).
Learn more in:
https://brainly.com/question/1016442?referrer=searchResults
Why are most genes inhibited in an average animal cell
Answer:
Most genes must be turned off because cells play specific functions, thereby only a limited number of genes must be expressed in each cell type in order to produce proteins required in the cell
Explanation:
Gener regulation is a critical molecular mechanism required for normal cell functioning. In consequence, genes are turned on and off depending on the cell type. For example, in the brain, cells that will be differentiated into neurons will be expressed, while genes involved in the differentiation of undifferentiated myoblasts into muscle cells will be turned off. Thus, genes are switched off in order to produce only those specific proteins which are required for each cell during specific developmental programs and functions carried out by each cell type.