hydrogen has only the valence electron because it is in the first group, it has one valence electron and one valence. So the sum of hydrogen's number of valence electrons and valence is two
What is a biome in science
Answer: a large naturally occurring community of flora and fauna occupying a major habitat.
Explanation:
Which classification level is MORE specific and LESS broad?
:)
I've been stuck on this for about 30 minutes and I'm just getting even more confused with it. I think I know the answer but it keep saying I correct.
Answer:
Le
Explanation:
im not positive but I think it is because I have Spanish classes too
What is the answer for 1. Graph the data in the tables above. What trends in CO2 levels do you notice over the course of a year? In the SWEET BEAT’S: MAKING SUGAR OUT OF THIN AIR article
Answer:it stays relatively the same
Explanation:
Penelope lived in California and was working with her local
community to help prevent desertification in their area due to the
drought. The community consisted of many residences, a variety
of industries, and a few farms. What is one way to help prevent
desertification?
allow livestock to overgraze the pasture
remove trees and other natural vegetation
overwater the ground causing soil erosion
rotate different crops that are grown each season
Answer:
d. rotate different crops that are grown each season
Explanation:
because different crops need different recources and that gives it a break its the only reasonable answer
allow livestock to overgraze the pasture makes zero sense and would make the problem much worse
remove trees and other natural vegetation would also hurt the environment
overwater the ground causing soil erosion its better but would do nothing to aid in the goal
so hense the last one(my family are farmers)
Which of the following is NOT an example of a compound?
salt
water
limestone
hydrogen
Similarities and differences between alleles
Answer:
A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene. Genes are responsible for the expression of traits. Alleles are responsible for the variations in which a given trait can be expressed.
What affects the efficiency of enzymes?
A) pH and activation energy
B) pH and temperature
C) pH an DNA
D) pH and coenzymes
What statement about DNA is correct?
A. A child DNA will be unrelated to the mothers or fathers DNA.
B. A child’s DNA will show similarities to both mother and fathers DNA.
C. A females DNA will exactly match the mothers DNA.
D. A males child’s DNA will exactly match the fathers DNA
Answer:
b is the correct answer
A person is pulling west with 35 N of force against a person pulling east with 15N of force. What is the net force?
Answer:
50 N west
Explanation:
thats your answer
Intracellular pathogens sometimes produce ________ that can kill phagocytes. Intracellular pathogens sometimes produce ________ that can kill phagocytes. PRRs leukocidins PAMPs lipopolysaccharides
Answer:
Leukocidins.
Explanation:
Intracellular pathogens sometimes produce leukocidins that can kill phagoctytes because leukocidins is a type of cytotoxin that is produced by pathogens which kill the phagocytes producing pathogens. The phagocytes destroy pathogens by engulfing the pathogens and destroying it by chemical toxins present inside the phagolysosome which is by a process called phagocytosis. The leukocidin kill phagocytes that engulf the pathogens making the pathogens to be able to affect the organism in which it invade.
Which of the following is NOT a term related to groundwater?
permosity
the zone of saturation
pore
water table
This is science BTW
Answer:
Permosity
Explanation:
Groundwater is defined as the water that is found inside the surface of the Earth. It comes from both rain, fractures of rock formation and melting snow.
Some examples of groundwater include aquifers, springs, wells, etc.
The term that is not related to groundwater is permosity.
Permosity is the term that isn't related to groundwater. Groundwater are
usually found in between rocks and soil as a result of it seeping through the
floor during precipitation.
The following are related to groundwater and they include:
Zone of saturation is found below the water table in which the rocks and soil are saturated with water. Pore refers to the tiny spaces in the soil and rocks which the water seeps through.Water table refers to the upper ground boundary which the soil are permanently saturated with water.This makes Permosity to be the most appropriate choice out of the list of
options provided.
Read more about Groundwater here https://brainly.com/question/9617
Water, carbon dioxide and DNA are all examples of what level of biological organization?
Answer:
Molecules
Explanation:
I just took a quiz and that was the correct answer.
Which of the following distinguishes the composition of a fertilizer with the label marked 15-10-25?
A. 15% nitrogen, 10% phosphorus, 25% potassium
B. 15% phosphorus, 10% nitrogen, 25% potassium
C. 15% potassium, 10% phosphorus, 25% nitrogen
D. 15% nitrogen, 10% potassium, 25% phosphorus
Answer:
A
Explanation:
What characteristics describe the solutes in the NaCl solutions in this activity?
Select all that apply:
-small
-large
-non-polar
-polar
-ionic/charged
(Select two)
Answer:
Ionic
Polar
Explanation:
Normally the NaCl is ionic and polar.
It is polar because of the large difference in the electronegativity of the Na and CL.
It is also ionic because it forms ions in the solutions and combines with other ions to form an acid or a base.
When NaCl is mixed in water the following reaction takes place
NaCl + H₂O⇒ NaOH +HCL
NaOH is a base and HCL is an acid. Usually by combining a salt and water an acid and a base is obtained.
Who are the parents of:
b. IIF:
c. IIIA:
d. IIIG
Which statement explains the effect of an inhibitor on an enzyme?
A.The enzyme will be unable to produce more enzymes.
B.a substrate will be unable to attach to the enzyme.
C.a substrate will be able to bond with the enzyme.
D.The enzyme will likely be attacked by immune cells.
Answer:
D
Explanation:
The statement that is explaining the effect of an inhibitor on an enzyme is that a substrate will be unable to attach to the enzyme. The correct option is B.
What is inhibitor?A reaction inhibitor is a compound that slows or precludes a chemical reaction. A catalyst, on the other hand, is a material that accelerates a chemical reaction.
An enzyme inhibitor is a molecule that unites to an enzyme and prevents it from working.
Enzymes are proteins that accelerate chemical reactions that are vital to life, such as the conversion of substrate molecules into products.
Cimetidine, erythromycin, ciprofloxacin, and isoniazid are illustrations of enzyme inhibitors.
Small molecule inhibition of enzymes is a significant control mechanism in biological systems.
This is a common drug discovery strategy that can provide a better understanding of enzyme activity, for example, by identifying residues critical for catalysis.
Thus, the correct option is B.
For more details regarding enzyme inhibitors, visit:
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1. Which of the following creases badly ?
a.linen
b.silk
c.wool
d.nylon
e.polyester
Answer:
Linen
Explanation:
13. Which of the following is a homogeneous mixture?
A. Fruit salad
B. Salad dressing
C. Rubbing alcohol
Answer:
it is salad dressing
Explanation:
substance to a
Thermal energy flows from a
substance.
Answer:
Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object. As thermal energy comes from moving particles, it is a form of kinetic energy.
Explanation:
What is the building block for living things? *
O Carbon
O Hydrogen
O Phosphorous
Answer:
hydrogen
Explanation:
Describe one advantage of having bacteria in the gut
Answer:
flu
Explanation:cause the flu starts from the gut
How many water molecules would be needed to break amylose down into four glucose molecules?
Answer: 3 molecules of water to break down whatever sugar it is into four glucose molecules
Explanation: Amylose does not break down into four glucose molecules. Amylose acts on some sugar (which is four times larger than glucose, stachyose for example) and produces four glucose molecules.
what does the liver do when the blood sugar is low?
Answer:
The liver releases stored glucose around the clock, to match the body’s needs.
Explanation:
plz hurry i mark brainliest
Answer:
A. Dendrites
B. Cell body (soma)
C. Synapse
D. Axon
C. Nucleus
Explanation:
Explain why a change in extracellular Na did not alter the membrane potential in the resting neuron.
Answer:
Explanation:
A change in extracellular Na did not alter the membrane potential in the resting neuron because the plasma membrane of a neuron is composed of little Na+ leakage channels and it is slightly permeable to few Na, thus lead to reduction in diffusion if Na inside and outside the cells.
1pt Which best represents a mixture?
A. soup
B. water
C. salt
D. Snow
define the term osmosis and how it works
Answer: Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides. It may also be used to describe a physical process in which any solvent moves across a selectively permeable membrane (permeable to the solvent, but not the solute) separating two solutions of different concentrations.
Explanation:
5.
Salad dressing is an example of a homogeneous mixture,
6.
The simplest type of substance is a(n) compound,
When elements combine to form compounds, their properties
7.
do not change
8.
The chemical symbol for water is H20.
9.
Substances in a mixture keep their own properties.
10.
The substances in a heterogeneous mixture can usually be seen
and are easily separated.
Answer:how am i supposed to answer?
correct answers are:
Salad dressing is an example of a homogeneous mixture. - False
The simplest type of substance is a compound. - False
When elements combine to form compounds, their properties do not change. - False
The chemical symbol for water is H20. - False
Substances in a mixture keep their own properties. - True
The substances in a heterogeneous mixture can usually be seen and are easily separated. - True
Salad dressing is typically a heterogeneous mixture. It consists of various ingredients, such as oil, vinegar, herbs, spices, and sometimes other additives. The simplest type of substance is an element, not a compound. An element consists of only one type of atom and cannot be broken down into simpler substances by ordinary chemical means. When elements combine to form compounds, their properties often change. Compounds have unique chemical and physical properties that are different from the properties of the individual elements that compose them.The chemical symbol for water is H2O, not H20. In a mixture, the substances retain their individual properties. They do not chemically combine or react with each other. In a heterogeneous mixture, the components are not uniformly distributed and can often be seen as distinct phases or particles.
Learn more about mixtures here.
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Surface winds tend to curve due to which of the following?
a.
The Corona effect
b.
The Coriolis effect
c.
The Corolla effect
d.
None of the above
Answer:
B.
Explanation:
The rotation of Earth causes moving fluids to appear to move east to west in the southern hemisphere and west of east in the northern hemisphere in a phenomenon known as the Coriolis effect. The curve of Earth's surface means that solar waves hit Earth at different angles.
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