the age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactive isotopes. the time required for half of a radioactive isotope to decay is called the half-life of that isotope. for example, the isotope carbon-14 has a half-life of 5,730 years.
Answer:
17,190 years Radiometric dating is a technique for determining the age of fossils that is based on the fact that specific radioactive isotopes decay at a constant rate.
Explanation:
Taq polymerase:
A. is denatured at temperatures above the normal human body temperature.
B. is produced in viruses and bacteria.
C. can remove the mineral deposits from rusting pipes.
D. can break down the sludge in oil refinery tanks.
Answer:
Taq polymerase is a thermostable DNA polymerase I named after the thermophilic eubacterial microorganism Thermus aquaticus, from which it was originally isolated by Chien et al .The function of Taq DNA polymerase in PCR is to amplify or synthesize DNA or gene of interest for various downstream applications. It's a type of thermostable DNA polymerase, work at a higher temperature as well. so its A
The process of making sugars in the chloroplast is called??
Answer:
Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. ... The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.
Which statement about the specific immune response is FALSE?
Each T or B cell has antigen receptors for only one specific antigen.
T and B cells recognize antigens by using antibodies bound to their surface membranes.
Unique antigen receptors are created by genetic recombination.
Antigens must be presented by an MHC molecule for T and B cells to recognize them.
All cells express MHC-I molecules, but only antigen-presenting cells express MHC-II molecules.
Explain why diseases result in symtoms
after light excites electrons and they leave photosystem ii to travel down the first electron transport chain. how are these electrons replaced to photosytem ii
Answer:
They are replaced by water splitting
Explanation:
NEED URGENT HELP!
A. What are three things that can create microclimates?
B. What characteristics of these things help create a microclimate?
Topography (height), large bodies of water and urban areas can create microclimates
in a hot place, if theres a mountain there, the top of the mountain can be cold
cement in an urban area can absorb a lot of heat during the day and then release it at night
valleys can have cold air
1. How does Air move in Earth's Atmosphere?
Answer:
Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. ... When the air cools, it drops back to the ground, flows back towards the Equator, and warm again. The, now, warmed air rises again, and the pattern repeats. This pattern, known as convection, happens on a global scale.
please help me.what are the insects with out siphoning mouth parts.? please help.
12. What biological organisms are in topsoil?
decaying and living plant and animal life
fossil remains from millions of years ago
nutrients from basic building material
Kard soil, clay, and large rocks
Answer:
Many of the millions of organisms that live in the soil, including bacteria, fungi, insects, and earthworms, are known as decomposers. They live on the remains of dead plants and animals and break down these organic remains into simple chemicals that are released into the soil.
Explanation:
When Emma first began dancing, her movements were ______ and awkward. Now, after several months of practice, Emma is able to produce fluid, smooth movements as a result of which of the following?
*all of the above is correct
Answer:
All of the above is the correct answer
Explanation:
throughout the ___________, a healthy dietary pattern can help minimize diet-related chronic disease risk.
Answer:
pregancy
Explanation:
Throughout the life, a healthy dietary pattern can help minimize diet-related chronic disease risk.
What are chronic diseases?Chronic diseases are those who required long term treatments.
Examples are cancer, heart diseases, diabetes, or any disability.
These diseases need treatments in phases or sometimes the treatment is lifetime.
To avoid chronic diseases, we should follow a healthy lifestyle.
Thus, the fill in the blank is life.
Learn more about chronic diseases
https://brainly.com/question/934133
A goniometer measures __________. A. A joint's maximum range of motion B. A joint's minimum range of motion C. A joint's flexion D. Extension and hyperextension Please select the best answer from the choices provided. A B C D.
A goniometer measures __________..
Answer : A
Explanation : A joint's maximum range of motion
Hope this helps you!
Answer:
A. a joint's maximum range of motion
Explanation:
A goniometer is a device that is used to measure the maximum arc of motion made by a joint. The traditional goniometer consists of a protractor and two extending arms ,one of the arms is movable while the other one is stationary.To take measurements the center of the goniometer is aligned with the center of a joint. Then the arm of the goniometer is moved until it aligns with the limb that has been moved to a maximum position that the joint allows. The angle made between the two arms of the goniometer is measured in degrees and is the maximum range of motion of the joint.
Select the correct pair of classes that are categorized under superclass Pisces.
a) Cyclostomata and Osteichthyes
b) Osteichthyes and Chondrichthyes
c) Agnatha and Gnathostomata
d) Cyclostomata and Chondrichthyes
Answer:
d
Explanation:
because it is the answer
Which of the following food items would be the most energy efficient to eat?
A. Grilled chicken
B. Steak
C. Apple
D. Shark fin soup
Answer:
Apple
Explanation:
The food item that would be the most energy efficient to eat is an Apple. The correct option is C.
What do you mean by energy-efficient?The meaning of energy-efficient is the objects that have high energy but are low in calories. Fruits and vegetables have ample amounts of energy and are good sources of natural sugar. These items are good for health and provide energy at the same time.
The food items that are given are grilled chicken steak, and shark fin soup are all non-veg items, and contain a large amount of fat in them. But apple is a fruit, and it is low calorie and rich in fibers and energy.
Thus, the correct option is C. Apple regarding the food items that would be the most energy efficient to eat.
Learn more about energy-efficient, here:
https://brainly.com/question/10412685
#SPJ5
why it is important that the product of mitosis are two identical daughter cells.
Answer: Mitosis involves the division of a cell into two identical daughter cells. Each daughter cell needs a copy of every chromosome, so the process begins with cutting the chromosomes into manageable copies, so the process involves copying the chromosomes and then separating them and then so each cell has the full set. chromosomes have exactly 23 pairs of chromosomes, its hard to remember because you can also say 46 chromosomes but never say 46 pairs because doing so will result into you saying 92 chromosomes. you can either say 23 pairs or 46 chromosomes.
Hope it helps,
If you can play please me for Brainliest.
Explanation:
What is a strength in the figure?
(1 point)
The figure shows structures in a cell.
The figure shows the steps involved in DNA replication.
The figure shows stem cell differentiation.
The figure shows where mitosis occurs in the cell cycle.
Answer: D
Explanation:
it shows none of the other ones
how many chromosomes are in a typical human body cell?
Answer:
46 chromosomes
Explanation:
There are 46 chromosomes in a typical human body cell. (23 pairs of chromosomes)
how many chromosomes are in a typical human body cell?
Answer:-46 chromosomes
Explanation:-The normal number of chromosomes in every cell of a typical human body is a total of 46 chromosomes, or 23 pairs.
while a neuron membrane is depolarizing its __________.
Given what we know about the depolarization of neurons, we can confirm that while a neuron membrane is depolarizing its sodium gates are fully open.
Throughout the human body, sodium is often used to cause shifts in membrane potentials, as well as a variety of other metabolic processes, due to the electric charge of this ion. One such example is the neuron, which uses a flood of sodium ions to depolarize its membrane.
During depolarization, the membrane potential changes from a negative charge to that of a positive one. This is caused by the rapid flooding of sodium into the cell, which increases the positive charge in the interior of the cell and thus affects the membrane's potential.
To learn more visit:
https://brainly.com/question/8438145?referrer=searchResults
Help meeeeeeeeeeeeee
Answer:
1)sunlight and co2
2)oxygen and ?
Explanation:
How would you describe what happened to the matter (atoms, elements, molecules) during the cellular respiration? Explain your answer.
1. Matter was created
2. Matter was destroyed
3. Matter was rearranged
4. Matter went through no changes
Find density if mass equal 400lb volume 20
Answer:
just use the formula d=m/v and plug in the numbers to solve the equation
Explanation:
A filamentous decomposer with cellulose cell walls could be a(n) __________. View Available Hint(s) for Part A algae water mold fungus helminth
Answer:c
Explanation:
A filamentous decomposer with cellulose cell walls could be a water mold.
Where is amoebae found?Amoebae are found worldwide and are very common in soil, fresh water, and other habitats.
Do fungi have cell walls?
Fungal cells also contain mitochondria and a complex system of internal membranes, including the endoplasmic reticulum and Golgi apparatus.
Hence , B is correct option
To learn more about water mold ,here
https://brainly.com/question/3914850?referrer=searchResults
#SPJ2
Lewis wants to summarize cellular respiration. What points should he include in his notes?
Select all that apply.
role to provide energy for making oxygen role to provide energy for making oxygen
role to provide energy for cells role to provide energy for cells
reactants include carbon dioxide and water reactants include carbon dioxide and water
reactants include a fuel and oxygen reactants include a fuel and oxygen
a series of chemical reactions
Which of the following is (are) part of a systemic immune response?
I. A fever
II. An increase in white blood cells in the body
III. An inflammatory response
I only
II only
III only
I and II only
I, II, and III
Answer:
l, ll, and lll.
Explanation:
Unranus gas a giant, storm that rotates similar to a hurricane?
True
False
Answer:
True
Explanation:
QUESTION 7
All of the following cells might be a product of meiosis EXCEPT?
OA) an egg
O B) a liver cell
OC) a spore
OD) a sperm cell
E) a gamete
Answer:
B) Liver Cell
Explanation:
An egg and a sperm cell are reproductive cells that are products of meiosis
A spore is produced by meiosis in the sporophyte
A gamete is produced through meiosis
The best advantage of sexual reproduction is?
It is more efficient than asexual reproduction
It is safer than asexual reproduction
It results in identical offspring
It increase genetic diversity through meiosis, crossing over, and random assortment of chromosomes
Answer:
it increase the genetic diversity through meiosis , crossing over and random assortment of chromosome
Explanation:
There are two main processes during sexual reproduction: meiosis, involving the halving of the number of chromosomes, and fertilization, involving the fusion of two gametes and the restoration of the original number of chromosomes.
while asexual reproduction doesn't form any reproduction that involves neither meiosis nor fusion of gametes
Explain why bacteria and archaea are prokaryotic cells and all other organisms are eukaryotic cells
Answer:
Archaea and bacterial cells lack organelles or other internal membrane-bound structures. Therefore, unlike eukaryotes, archaea and bacteria do not have a nucleus separating their genetic material from the rest of the cell.
Explanation:
The misshapen version of a protein that causes properly folded proteins to misfold is called a ________.