Answer:
Normal level of calcium in the blood.
Explanation:
The normal range of PTH levels means that there is normal amount of calcium is present in the blood. If the PTH level is too high it means that the levels of calcium in the blood is very low while on the other hand, if the levels of PTH is low it means that the level of calcium in the blood is too high so that's why normal range of PTH level means normal level of calcium in the blood.
Which of these causes a disease to be classified as contagious?
It is easily prevented by vaccines.
It is easily treated by antibiotics.
It is easily caused by pathogens.
It is easily passed between people.
Answer:
it is easily passed between people
Guys pls help me!!!!!!!!!!! R these all correct!!!
Yes, but I think you need to switch immune system and immunity. Good Luck!!
Kristina inserts a key into the ignition of her car. She turns the key, putting her car in the ignition mode. In this mode, some energy is used to create the temperature of the car's fuel. This energy alloows the fui
Answer:
lol thats my friends deadname looooollll
Explanation:
XDDDD
why only 10% of the energy move up to the next level in the energy pyramid?
Answer:
The rest of the energy is transferred to help the organism to survive. It would include staying warm.
Explanation:
What are some disadvantages of fossil fuels?
A Fossil fuels deplete Earth of its historical materials.
B Fossil fuels are nonrenewable and may cause pollution.
C Fossil fuels are relatively cheap to produce and easy to use.
D The use of fossil fuels depletes our forests of resources.
Answer:
B. Fossil fuels are nonrenewable and may cause pollution.
Explanation:
Fossil fuels are nonrenewable, meaning that they cannot be replenished sustainably. So, eventually, we will run out of them because they cannot be renewed.
Another disadvantage of fossil fuels is that they cause pollution. For example, the gasoline that is used by cars creates significant amounts of pollution every year.
Pollution is created by cars, factories, homes, and everything else that uses fossil fuels.
So, the correct answer is B, fossil fuels are nonrenewable and may cause pollution
The table shows mass and volume measurements in an investigation that involves vinegar and baking soda, both before and after the chemical reaction.
What evidence supports the law of conservation of mass?
The mass remains constant before and after the chemical reaction
The volume of the products is more than the volume of the reactants, so it does not support the law of conservation of mass.
The mass of the gas is more than the mass of the baking soda, so the mass is constant
The density of the products is less than the reactants, so the mass is constant.
Answer:
mass will be less
Explanation:
A chemical reaction takes place when vinegar and baking soda are mixed. One of the new substances formed is carbon dioxide gas. If the carbon dioxide gas is contained, the mass of the substances will stay the same according to the Law of Conservation of Mass. If the gas is allowed to escape, the mass will be less
10-15 Facts about cells
1. Animal cells do not have a cell wall.
The cell wall in plant cells helps give the cell shape and protection.
2. Mitochondria is the powerhouse of the cell.
The mitochondria gives directions to other organelles. They also create ATP, which gives energy to the cell.
3. The nucleus is the largest organelle in animal cells.
The largest organelle in plant cells is the vacuole, which usually takes up most of its volume. The vacuoles in animal cells are not as big.
4. In plant cells, chloroplast absorbs the sun for photosynthesis.
Chloroplast is very important for plant cells, as photosynthesis is a vital part of survival. It uses the light energy from the sun to create energy.
5. Cells are the smallest unit of life.
Not to be confused with atoms, which are the smallest unit of matter, cells are the smallest unit of life.
6. Humans are made of eukaryotic cells.
Eukaryotic cells are usually animal cells, while prokaryotic cells are usually things like bacteria. Humans are animals.
7. The ribosomes take directions from the nucleus for protein synthesis.
As stated above, the mitochondria will give directions to the organelles, one of them being the ribosomes. They will then use these directions to do protein synthesis.
8. Cells have both DNA and RNA.
DNA will most likely be found in the nucleus of a cell, while RNA will probably be located in the cytoplasm.
9. Prokaryotes do not have a nucleus, along with other organelles.
Prokaryotes do not have membrane-bound organelles, this includes the nucleus.
10. One job that lysosomes have is breaking down macromolecules.
While breaking down macromolecules is one job of lysosomes, they also do things like repair the cell membrane.
Which of the following is true about lunar eclipses?
Answer:
I would answer but you didn't give me anything to pick from. :(
Atoms of which pair of elements will form ionic bonds in a compound
A. I and F
B. Be and Cl
C. Ag and Ca
D. Na and Al
What is the structural formula for saturated fatty acid?
Answer:
The chemical structure of a saturated fatty acid exhibits each carbon bonding to the adjacent carbon with single bonds. Each carbon is also bonded to two hydrogen atoms. The linear nature of saturated fatty acids allows for tightly packed formations, causing them to be solid at room temperature
how is starch in the sweet potato is produced from carbon dioxide in the air.
Answer:
In photosynthesis, plants use light energy to produce glucose from carbon dioxide. The glucose is used to make cellulose fibers, the structural component of the plant, or is stored in the form of starch granules, in amyloplasts. Toward the end of the growing season, starch accumulates in twigs of trees near the buds.
b. What two things would need to happen for your hypothesis to eventually become a theory? Look back over the definition of a theory. (2 points
Answer:
A scientific theory is a broad explanation for events that is widely accepted as true. To become a theory, a hypothesis must be tested over and over again, and it must be supported by a great deal of evidence. People commonly use the word theory to describe a guess about how or why something happens.
Explanation:
Blood cells transport
carbon dioxide to
the lungs
Oxygen from the
lungs enters the
alveoli in the lungs
Red blood cells supply
oxygen to the cells of
different organs in
the body
Oxygen enters
the red blood ces
in the capillanes.
Red blood cells
collect the waste
carbon dioxide
Lungs
If you're asking for which statement is true, I believe it is "Oxygen from the
lungs enters the alveoli in the lungs."
Which of the following are characteristics of
Ascomycota? Check all that apply.
-
flagellated spores
spores produced in the ascus
lack reproduction phase
important in the
food industry
important in the
digestion of animals
can cause disease in plants
can cause disease in animals
DONE
flagellated spores
spores produced in the ascus
lack reproduction phase (they have sexual and asexual reproduction)
important in the
food industry
important in the
digestion of animals
can cause disease in plants
can cause disease in animals
more info on Ascomycota characteristics if you need: https://courses.lumenlearning.com/wm-biology2/chapter/ascomycota/
bolded answers
What plant organ is responsible for the majority of photosynthesis?
A) root
B)stem
C) leaf
D) flower
Answer: C.) Leaf
Explanation: Leaves are the main sites for photosynthesis which is the process by which plants that synthesize food. Most leaves are usually green, due to the presence of chlorophyll in the leaf cells.
I hope this helps. :)
Describe convection and give an example
Answer:
Everyday Examples of Convection
This hot water rises and cooler water moves down to replace it, causing a circular motion. radiator - A radiator puts warm air out at the top and draws in cooler air at the bottom. ... ice melting - Ice melts because heat moves to the ice from the air.
Explanation:
Plz brainliest
If the mantle was made of hard, solid rock instead of soft solid rock
would the plats be able to move on top of it?
Yes
No
Answer:
No, I don't think so.
Explanation:
^^
Because they wouldn't have as much friction availability.
what are the tRNA anticodons
Sally is pregnant and worried that she might be Rh incompatible with her
unborn child after remembering what she learned in her high school
biology class. Sally knows she is Rh negative (the recessive phenotype) and
her husband is Rh positive, but is heterozygous. What chance do they have
of their potential child being Rh positive?
Answer:
The Rh- allele is recessive. So sally is Rh-Rh- and her husband is Rh+Rh-.
The possible genotypes for Punnet's square are: Rh+/-,Rh+/-,Rh-/-,Rh-/-
So the chance to have an Rh+ child is 50%
Which of the following equations follows the Law of Conservation of Mass?
A.H2 + O2 2OH
B.CH4 + 3O2 2CO2 + 2H2O
C.2Mg + Cl MgCl2
D.2Fe + 3O2 Fe2O3
PLEASE DO NOT SEND ME A LINK TO THE ANSWER.
Answer: A.
Explanation: There are 2 hydrogen atoms and 2 oxygens atoms on the reactant side, and it yielded 2 oxygen and hydrogen atoms in the products.
(06.06 MC) Which of the following correctly describes the relationship depicted in the diagram below? The image shows a Venn diagram with three interconnected circles: Dermal Tissue, Vascular Tissue, and Ground Tissue. Parenchyma is in the portion where all three circles intersect. Xylem and phloem is under Vascular Tissue. Collenchyma and sclerenchyma are under Vascular Tissue and Ground Tissue. the relationship between different plant hormones and their functions the completed plant tissues and the cells that initiate their growth the types of cells and the tissues in which they can be found in a plant the differences between plant structures and the hormones they produce
Answer:
The types of cells and the tissues in which they can be found in a plant
Explanation:
The diagram is clearly comparing tissues as that is what the big labels are. Add to that that the things being compared in the diagram are types of cells. Something you should be able to easily identify since you're taking the test.
The Diagram and photo of the correct answer if anyone was wondering:
True or False: A recessive trait masks other traits and is represented with a capital letter.
According to darwin theory of evolution all species on earth are united by a what
Answer:
common ancestors
Explanation:
hi I dont really have an explanation to the answer, but here you go!
Pioneer plant species could be described as those that? A) sprout from seeds after a Forest fire.
B) are slow to mature, and require a soil with well-balanced nutrients
C) are small in size, and highly effective means of dispersing Their seeds
Answer:
its a
Explanation:
a pioneer plant is the first to sprout after something like a forest fire
correct the statement to make it true.
Plants perform photosynthesis but not cellular respiration
Answer:
Plants perform both photosynthesis and cellular respiration
Explanation:
Although plants use photosynthesis to make glucose, they still need energy to break down glucose. Plus, plants have mitochondria too, where cellular respiration occurs.
(GIVING BRAINLIEST!!!!!!!!!)
You have been given a piece of evidence indicating that plant and animal life is scarce in this environment. Identify this environment and the correct explanation.
A) This is a tundra because it is too hot for plant and animal life to live in.
B) This is a swamp because it is too cold for plant and animal life to live in.
C) This is a desert because there is little precipitation for plant and animal life to thrive.
D) This is a rainforest because there is too much precipitation for plant and animal life to thrive.
Answer:
The answer is C
Explanation:
There is both plant and animal life in all of these, but it tends to be most scarce in deserts
Answer:
c !!
Explanation:
i did the test and it was correct
Tobacco, UV radiation, asbestos and X-rays can all alter the DNA structure and are examples of
Answer:
Cancer
Explanation:
All three examples listed could potentially cause cancer
Most metals are too …………… to exist on their own in the ground. Instead they exist combined with other elements (typically o……….. Or sulphur) as ……………….. Called …………. A few metals are so ……………….. That they exist uncombined, as ……….Metals e.G. Gold, ………………..
Answer:
Reactive
oxygen
compounds
Ores
Unreactive
Pure
Silver
Explanation:
The activity series shows the order of reactivity of metals. Metals that are high up in the series are highly reactive. These highly reactive metals will not exist alone in the ground. They combine with elements such as oxygen, sulphur, etc to form ores.
Other metals that are found much lower in the activity series are largely unreactive. They exist in the ground as pure metals, examples include silver and gold
An element is made up of _____.
one type of atom
one type of molecule
many type of atoms
multiple compounds
Answer:
I think it is C. Many type of atoms.
Explanation:
Because atoms are made up of protons, neutrons, and electrons.
During pregnancy, what causes the widening of the belly area? the release of an egg by the ovary the increased number of sperm in the fallopian tube the stretching of the uterus as the fetus continues to grow the increase of fat supplies needed to help feed the fetus
Answer:The stretching of the uterus as the fetus continues to grow (C)
Explanation: I got it correct on Edge 2021! Hope it helps!!!