Answer:
Electrons are many thousand times smaller than the nucleus and negatively charged.
Explanation:
Electrons possess negligible mass and carry a negative charge.
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Elabora un párrafo utilizando las siguientes palabras; sistema nervioso, sistemas, neuronas, sistema endocrino, glándulas, hormonas, sangre, mensajeros químicos
Answer and Explanation:
El sistema endocrino esta compuesto por tejidos y glándulas que se encuentran en distintas partes del cuerpo y que cumplen funciones de control sobre distintos órganos. Se encarga de la síntesis y secreción de hormonas en función de las necesidades del organismo. Las glándulas secretan hormonas a la sangre que actúan como mensajeros químico y que son transportadas hasta los tejidos destino, donde transmiten la señal adecuada de regulación celular. El hipotálamo y la hipófisis son dos glándulas que se ubican en la zona central-inferior y en la base del cerebro, respectivamente. El hipotálamo regula el funcionamiento de la hipófisis a través de secreción hormonal. Secreta hormonas en capilares que se dirigen hacia la hipófisis. La hipófisis, también conocida como glándula pituitaria, secreta hormonas que se dirigen a distintos tejidos del cuerpo. Tanto el hipotálamo como la hipófisis están regulados por el sistema nervioso, cuyas unidades funcionales y estructurales son las neuronas. Estas se encargan de enviar impulsos nerviosos en la comunicación inter-neuronal. Ambos sistemas mantienen estrechos sistemas de comunicación.
Do you think the processes that form and shape the small stream bed are similar to those that form and shape the Grand Canyon? Why or why not?
Answer:
Due to the flowing of stream and river.
Explanation:
The processes that formed the small stream bed are similar to those that formed the Grand Canyon because both are formed by the flowing of river. The river flow through these regions and with this flow they takes rock particles with itself and makes several shapes and structures of that region. So we say that rivers and streams are responsible for the formation of stream bed and Grand Canyon.
Definition: This is a type of protein found in the cell membrane, which regulates the coming and going of substances into or out of the cell.
Name the two different types of tissue in the transport system of a flowering plant
Answer:
Vascular tissue transports water, minerals, and sugars throughout the plant. Vascular tissue is made up of xylem tissue and phloem tissue. Xylem tissue transports water and nutrients from the roots upward. Phloem tissue carries sugars from the sites of photosynthesis to the rest of the plant.
Explanation:
I want to design an experiment to see if drinking coffee makes students
score higher on tests. List 1 necessary constant.
Answer:
The type of coffee
Explanation:
Different types of coffee contain different amounts of caffeine. This makes it important to use only one type of coffee
Constant is the one thing that does not change. If you are experimenting to see if they test better with coffee, you'll need to give each student the same amount of coffee throughout each trial.
Which of the following describes why ice floats?
A-The density of ice is Higher than that of liquid water
b-The density o ice is lower than that of liquid water
C-The density of ice is the same as liquid water
D-None of the Above
Why is water vital to maintaining a constant internal enviorment
A-It is cohesive
B-It is Adhesive
C-It is a good solvent
D-It has a high specific heat
Which of the following is true about a solute
A-If forms a suspension
B-it dissolves a solvent
C-It cannot dissolve
D-It is dissolved by a solvent
Which of the following is true about an acidic solution
A-Its pH is below 7
B-Its hydrogen icon concentration is low
C-It is neutral
D-It can act as a buffer
Hey There!!~
Which of the following describes why ice floats?
Your answer is B. The density of ice is lower than that of liquid water. Because, As the water cools, the particles slow down and the bonds last longer. These bonds cause the water molecules within ice to form a lattice-like structure that is less dense than liquid water. So, ice floats on the more dense liquid water.
Why is water vital to maintaining a constant internal environment?
Your answer is C. It is good solvent. It is the maintenance of a constant internal despite changes in internal and external conditions. In the human body, this includes control of: blood glucose concentration.
Your answer is A. Its pH is below 7. Because, An acidic solution is one in which the concentration of hydronium ions is greater than that of hydroxide ions. This makes the pH less than 7. An acidic solution is an electrolyte and conducts electricity.
Hope This Helps!!
[tex]Itsbrazts[/tex]
Answer:
The molecules in ice are more spread out so ice is less dense than water.
Explanation:
Explain why a law is accepted as fact, but a theory is not
Answer:
A law is a fact because it cannot be changed. A theory on the other hand can be changed over the course of time.
Explanation:
Answer:
A law is 100% proven while a theory is not. A law is never wrong while a theory, although widely accepted or has been tested hundreds to thousands of times, may be found incomplete or eventually wrong.
Explanation:
An open spinal defect characterized by a protrusion of meninges and spinal cord through the defect, usually within a meningeal sac, is called :_______
Answer:
This question lacks options, options are:
a. meningocele
b. spina bifida occulta
c. Meningomyelocele
d. Arnold-chiari syndrome
The correct answer is c.
Explanation:
Spina bifida is a neural tube defect that usually runs in families. Spina bifida occurs due to an abnormality in the development of the spinal cord in the first trimester of pregnancy. The defect can only be associated with a protrusion of the membrane that covers the spinal cord (meninges), called a meningocele, or with some neural elements, called a meningomyelocele. Spina bifida can cause mild to severe physical and mental disabilities, depending on the size and location of the opening in the spine, and whether the spinal cord and nerves are affected. Myelomeningocele is a defect in which a fluid sac containing part of the spinal cord and nerves exits through an opening in the baby's spine, causing nerve damage. Also called "open spina bifida," this disease causes moderate to severe disabilities, such as trouble going to the bathroom, loss of sensation in the legs or feet and paralysis in the legs.
Question 1 (1 point)
What is the type of energy called needed to catalyze a reaction?
3
Kinetic Energy
6
Activation Energy
9
Potential Energy
Free Energy
Answer:
Activation Energy
Explanation:
Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA). Activation energy is the amount of energy required to reach the transition state. The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.
How would you describe amino acids in
proteins?
Answer:
__________________________
The 20 amino acids that are found within proteins convey a vast array of chemical versatility. The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein.
Use the picture to tell if it is accurate , precise , or both?
Answer:
Accurate - Yes
Precise - Yes
Explanation:
Accuracy and precision are two ways to detect the closeness of measured values in an experiment. However, these two terms do not mean the same thing.
Accuracy of a measurement refers to how close a measurement (experimental values) is to a true or actual value while the precision of a measurement refers to how close the experimental or measured values are to one another.
Note that, a measurement may be accurate but not precise or be precise but not accurate.
In the case of the dart board in the image, it is evident that the measured values (represented by darts) are close to the middle target (represents the known or accepted mark). Hence, the measurements are said to be ACCURATE. Likewise, the measured values are also close to one another, meaning that they are PRECISE.
Therefore, the measurements are both precise and accurate.
Why can theories be change but laws cannot?
Answer:
A law is a fact, theory is true until proven false.
Explanation:
A law is a fact that has been proven true through multiple observations. A theory is considered true until proven false.
The leaves of a plant have a waxy coating. In which environment does the plant most likely live?
1. Tropical rain forest
2. Arid grassland
3. Coastal wetland
4. Coniferous forest
During Anaerobic respiration
Answer:
During anaerobic respiration, energy is released from the breakdown of food substances without the use of oxygen.
An open spinal defect characterized by protrusion of meninges and spinal cord through the defect, usually within a meningeal sac is called:
Answer:
the answer to your question is meningoyelocele
what species are humans
Answer:
Humans are homosephians and are mamals
The ratio of red blood cells to white cells in the human body is 700:1. If there are 3.5 million red blood cells in a microliter of blood, how many white blood cells are there in the same volume of blood? A) 5000 B) 10000 C) 15000 D) 20000
Answer: the answer would be 5,000
Explanation: because you are given that there are 700 red blood cells to every 1 white blood cell you can simply divide 3.5 million by 700
What characteristic(s) might a human and a cat with extra sex chromosomes (XXY, share?
Answer:
There can be things common if a human and cat have extra sex chromosomes (XXY) that includes they are both males and they both have Klinefelter syndrome
In both human and cat, sex chromosome is represented as XY and because of an extra sex chromosomes (XXY) both will be male as female has XX sex chromosome.
Both human and cat will suffer from Klinefelter syndrome because extra chromosome can cause any hormonal or genital disorder and Klinefelter syndrome is a disorder in which humans have small undescended testes or small penis.
Rank the metals from most reactive (1) to least reactive (3).
Answer:
The first question is 2,3,1 then the second question is 3,1,2
Explanation:
For the second one the periodic table gets more reactive from left to right.
Please answer the questions in the picture for 30 pts
Answer:
For the barchart the answer is D,October
2. What step is necessary before joining
the glycerol and fatty acid molecules?
(Think of what needed to be done in
order to join the monosaccharides.)
Use the filled in models to create the lipid.
Answer: non- glucose monosaccharides enter glycolysis so maybe that's it?
Explanation:
A man has the A blood phenotype and his wife has the B blood phenotype. Their son has the O blood phenotype. Could this man be the father of this child
Answer:
NO
Explanation:
They would have formed AB blood type not O.
Why hydrophytes do not have cuticle on stem or leaves? answer just in 4 to 5 lines
Explanation:
The cuticle is a layer of tissue on the outside of most leaves and stems, and its primary function is to help the plant conserve moisture. Since hydrophytes are full of water and moisture, it does not need a cuticle.Most aquatic plants don’t need to seal in moisture, so they don’t have cuticles
Fill in the below mention blanks with immunity. Immunity types may be used more than once, but each sentence has only one correct type of immunity associated with the description.
a. __________ Cytotoxic T cells attack and destroy foreign cells and viruses Antibody-mediated Immunity
b. __________ T-cells mature in the thymus before they circulate Immunological.
c. __________ B cells differentiate into plasmocytes.
d. __________ Antibodies attach to specific targets.
e. __________ B cells mature in red bone marrow before they circulate antigen.
f. ___________Memory T cells are activated later by the same 6 antigen.
g. ___________NK cells police peripheral tissues for abnormal and cancer cells.
1. Cell-mediated Immunity
2. Anti-body mediated immunity
3. Immunological surveillance
Answer:
to. 1. Cell-mediated immunity Cytotoxic T lymphocytes attack and destroy foreign cells and viruses Antibody-mediated immunity
b.1. Cell-mediated immunity T cells mature in the thymus before they circulate. Immune.
C. 1. Cell-mediated immunity B cells differentiate into plasma cells.
re. 2. Antibody-mediated immunity Antibodies adhere to specific targets.
me. 1. Cell-mediated immunity B cells mature in the red bone marrow before they circulate the antigen.
f.1. Cell-mediated immunity Memory T cells are subsequently activated by the same 6 antigens.
g.3. Immune surveillance NK cells monitor peripheral tissues for cancer and abnormal cells.
Explanation:
Cellular immunity is mediated by the cells of the immune defense, it presents different times, in the first time the PMN appear, in the second time the antigen presenting cells, and lastly the lymphocyte lineage.
Antigen presenting cells have the ability to phagocytose and express antigen on their surface to facilitate the formation of antibodies.
Surveillance immunity refers to the lymphocytes that are responsible for monitoring or controlling cell mutations or uncontrolled growth due to genetic mutations.
Neoplastic cells express histocompatibility complexes on their surface that make them recognized by these lymphocytes and this is how they are responsible for inducing self-destruction or phagocytosis of the neoplastic cell.
Humoral immunity refers to the chemical substances that function as mediators of cell activity, these are: pro and anti-inflammatory cytokines, complement chain, nitric and nitrous acid, oxygen free radicals, interleukins, growth factors and tumor necrotic factor alpha - beta
Helpppppppp aquatic questionnnnn will give brainliestt and most points i can
Answer:
6.c
8.c
I'm not sure about the rest.
Compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in a ____ solution. A particular saw you in the cell uses energy Ford transit for from the cell two at surroundings. This type of transport is called ——
Answer:
hypotonic solution
sorry i dont understand the second one
Explanation:
Answer: The first blank is hypertonic and the second blank is active transport
Explanation:I got it right on Plato
Plz help I don't know the answer
Answer:
The answer to the question is option D
in which biome would you expect to find each loaction given the precipitation and temperature data
Which statements describe the importance of the six elements found in all living things?
Answer:
All living things have six basic elements in common: carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur, abbreviated as CHNOPS. Each element has properties that make it crucial to the building of biomolecules, both in their capacities for bonding to other elements and in the bonds themselves.
Explanation:
I just searched it up on google :)
When you break down maple syrup into smaller units, these units are called
Answer:
This question lacks options, the options are:
a. nucleotides b. monosaccharides c. RNA d. triglycerides
The answer is B. Monosaccharides
Explanation:
Monosaccharides are the simplest units of carbohydrates. They contain one units of sugar, hence, are commonly called simple sugars. Monosaccharides include glucose, fructose etc. They contain basically carbon, hydrogen and oxygen elements in their structure.
Maple syrup is a syrup majorly composed of carbohydrates used generally as a sweetening purposes. It is extracted from trees of sugar maple and other maple species. Since the syrup is principally composed of sugar (carbohydrate), it is broken down to the simplest unit of any carbohydrate molecule called MONOSACCHARIDE.