Answer:
Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.
Explanation:
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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:
ANSWER FOR BRAINLIEST!
Answer:
2
Explanation:
Could you please help me on this I could use some correct assistance! Your help would be great ❣️I believe you just have to put yes or no.
1a. Prokaryotic cells doesn't have a nucleus.
1b. Eukaryotic cells have a nucleus.
Page 2 - Answers2a. Prokaryotic cells doesn't have any membrane-bound organelles since they're single cells.
2b. Eurkaryotic cells have a membrane-bound organelles. If they didn't why would they have a nucleus?
3a. Prokaryotic cells have a plasma membrane.
3b. Eukaryotic cells have a plasma membrane too.
4a. Prokaryotic have circular DNA.
4b. Eukaryotic cells also have DNA.
5a. Prokaryotic cells have cytoplasma.
5b. Eukaryotic cells also have cytoplasma.
6a. Prokaryotic cells have ribosomes.
6b. Eukaryotic cells also have ribosomes.
7a. Most prokaryotic cells have a cell wall. Mostly plant cells have cell walls.
7b. Eukaryotic cells don't have a cell wall. Like I said, plant cells have cell walls.
8a. Prokaryotic are simple cells, since they don't have lots of organelles.
8b. On the other hand, prokaryotic cells are more complex since they have lots of organelles.
9a. Prokaryotic cells are smaller than Eukaryotic cells. They measure in 0.1 to 5.0 micrometers.
9b. Eukaryotic cells are much bigger, measuring in 10-100 micrometers.
10a. Prokaryotic cells are unicellular.
10b. Eukaryotic cells are multicellular.
11a. Prokaryotic cells are in the Monera Kingdom, which consists of bacteria.
11b. Eukaryotic cells are in the animalia, plantae, fungi, and protista kingdom.
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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,
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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
What is the main difference between organisms that share many characteristics and organisms that do not?
Answer:
The more derived characteristics organisms share,the greater their degree a kinship. For instance,a derived characteristic in plants is the presence of the vascular tissue.Although all organisms share similar traits.
Explanation:
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Depletion time describes the length of time it takes to use up
Answer:
80% of a mineral reserve
Explanation:
i got 100% on this unit
contains stem cells that develop into all cells of the body in a process called hematopoiesis
Answer:
Bone marrow is soft, spongy tissue at the center of bones, and it plays an essential role in creating RBCs. The marrow produces stem cells, which develop into RBCs, white blood cells, and platelets.
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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:
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.
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.
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Oxygen sag curves can occur in streams when ____. Group of answer choices bacteria break down biodegradable wastes salt and fresh water mix water flows quickly water levels are high water is cool or cold
Oxygen sag curves can occur in streams when bacteria break down biodegradable wastes salt and fresh water mix water flows quickly water levels are high water is cool .
What is biodegradable waste?The waste which has been recycled and converted into nutrients for plants as well as crops and for other use are known as biodegradable waste. It has been also known as any organic matter in waste which can be broken down into carbon dioxide, water, methane or simple organic molecules by micro-organisms and other living things.
Composting has been possible with the wastes which can decay by itself, like fruit and vegetable peels, leaves, flowers etc. Non biodegradable wastes will not decay by itself.
Therefore, Oxygen sag curves can occur in streams when bacteria break down biodegradable wastes salt and fresh water mix water flows quickly water levels are high water is cool.
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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:
what will happen to the cell?
A. it will shrink
B. nothing
C. it will explode
Answer:
B
Explanation:
The misshapen version of a protein that causes properly folded proteins to misfold is called a ________.
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:
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
What is released by fat cells to signal that the body has had enough to eat, and also influences BMR
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.
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.
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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
When does osteogenesis begin?
*When a fetus is 13-15 weeks old
When a baby is born
When a fetus is 32 weeks old
When a child is 2 years old
Answer:
A. When a fetus is 13-15 weeks old
Explanation: is correct. post protected
What observations did charles darwin make about finches in the galápagos islands?
Answer:
He noticed that each finch species had a different type of beak, depending on the food available on its island. The finches that ate large nuts had strong beaks for breaking the nuts open.
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
Unranus gas a giant, storm that rotates similar to a hurricane?
True
False
Answer:
True
Explanation:
why should you lower the stage all the way down after using a microscope?
Answer:
Reducing the amount of light improves contrast, making the specimen "stand out" against the background. Some microscopes have an annular condenser, which is a plate under the stage that can be rotated. The plate consists of holes of different diameter.
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.
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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.
Question 2 (Multiple Choice Worth 2 points)
(01.02 MC)
Sucrose and lactose are two carbohydrates that have the same molecular formula (C12H22011). Which of the following
O They are made up of differentlmino acids.
O They are monosaccharides with different atoms bonded to their rings.
O They each have two glucose molecules, but the arrangement differs.
O They are made of different combinations of monosaccharides.
Question 3(Multiple Choice Worth 2 points)
Answer:
Last one is correct
Explanation:
Sucrose is made of glucose and fructose
Lactose is made of glucose and galactose