Answer:
The first two
Explanation:
In most places the population is going up
How do most people who don’t live near lakes and rivers get their water
using rivers and wells
Describe what happens when an enzyme is placed in
environments that have different pH levels or
temperatures than its regular environment.
Answer:
If your just looking for the "why" then this is what i do know about it.
Explanation:
Changes in pH cause amino acids' component atoms and molecules to ionize. This can make an enzyme change shape. These shapes determine function, so changing the shape can impair the enzyme's function, preventing it from speeding up chemical reactions.
Higher temperatures disrupt the shape of the active site, which will reduce its activity, or prevent it from working. The enzyme will have been denatured . Enzymes therefore work best at a particular temperature.
Hope this helps.
Plzz helpppp thanks I’ll mark brainliest
Answer:
d
Explanation: have a good day :]
A biologist is studying a population of zebras that seems to be suffering from a disease that debilitates their bones. He
collects a sample of bones from the carcass of a deceased animal. He finds that the bones have a mass of 7.15
grams and occupy a volume of 5.5 cubic centimeters. What is the density of the bones?
O 1.0 g/cm
O 1.3 g/cm
O 1.8 g/cm
O2.0 g/cm
Answer:
1.3 g/cm
Explanation:
ok so to get this answer what you need to do is look at the cubic centimeters and contrast it with the grams
Answer:
b) 1.3 g/cm3^
Explanation:
PLEASE ANSWER TJIS I WILL CRY PLEASE JUST ANSWER IT PLEASEEEEEEE
Beyonce wants to test if eating more broccoli will make her stronger. What
is her independent variable? *
A) exercise done
B) strength gained
C) calcium in milk
D) amount of broccoli eaten
Answer:
d
...........................................
what determines whether an atom will form a bond with another atom
Answer:
The amount of valence electrons
Someone plz heeeeelp! Plz
Which is the property of nonmetals to evaporate easily?
brittle
dense
liquid
volatile
Volatile is the property of nonmetals to evaporate easily. The correct option is D.
What is being volatile means?The ease with which a material vaporizes is described by its volatility. A volatile material is defined as
A compound that readily evaporates at normal temperatures.One with a measurable vapor pressure. Basically, the term volatile refers to liquids.Volatility is a substance quality in chemistry that characterizes how easily a material vaporizes.
An active ingredient with high volatility is more likely to exist as a vapor at a given temperature and pressure, whereas a substance with low volatility is more likely to exist as a liquid or solid.
The enthalpy of vaporization describes the temperature dependence of the vapor pressure, while vapor pressure is the physical property that conveys a compound's volatility at a given temperature.
Thus, the correct option is D.
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This has a lot of points and I am m giving out brainliest to anyone !! Please help me guys!
Answer:
C
Explanation:
Chloroplasts are necessary for plant cells to get energy. Plants are autotrophs, which means that they need to make food/energy by themselves to survive, and plants do so using a process called photosynthesis that chloroplasts aid in. Both plant and animal cells have a nucleus, cell membrane, and mitochondria, but only plant cells have chloroplasts. Therefore C.
Which of the following is a balanced equation.
Helpp
how important are the equipment in dressmaking?
Answer:
very importent
Explanation:
One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water depends on the relative polarity of their R groups, particularly on the number of ionized groups: the more ionized groups there are, the more soluble the polypeptide. Which of each pair of polypeptides that follow is more soluble at the indicated pH?
(a) (Gly)20 or (Glu)20 at pH 7.0
(b) (Lys–Ala)3 or (Phe–Met)3 at pH 7.0
(c) (Ala–Ser–Gly)5 or (Asn–Ser–His)5 at pH 6.0
(d) (Ala–Asp–Gly)5 or (Asn–Ser–His)5 at pH 3.0
Answer
The answers are below:
1.
(Gly)20 or (Glu)20 at ph 7.0
The answer is (Glu)20 because at a pH of 7 it has high negative charges so (Gly)20 is less soluble since it would remain unchanged
2.
Lys–Ala)3 or (Phe–Met)3 at pH 7.0
The answer is (Lys-Ala)3 because it has high positive charges at this pH while (phe-met)3 is lower this it is less soluble.
3.
Ala–Ser–Gly)5 or (Asn–Ser–His)5 at pH 6.0:
(Asn–Ser–His)5 is more soluble because though both of these polymers have the side chain Ser, (Asn–Ser–His)5 also have polar Asn side chain also it's His side chain is partially proponated.
4.
(Ala–Asp–Gly)5 or (Asn–Ser–His)5 at pH 3.0:
(Asn–Ser–His)5 is more soluble at ph of 3. this is because Asp residues are not fully proponated and they are also neutral, while (Asn–Ser–His)5 has its His residues fully proponated and also positively charged.
Another step in PCR requires small single-stranded DNA primers to anneal to a target sequence on denatured DNA. Two primers are used. Ideally these primers will have similar melting temperatures. The melting temperature is defined as the temperature at which 50% of the DNA is in the single-stranded form. Which of the following primers will have the highest melting temperature?
A. GGGGAAATTTCCCC.
B. AAAAGGGCCCTTTT.
C. AAAAGGCCTTTT.
D. GGGAAATTTCCC.
Answer:
A. GGGGAAATTTCCCC.
Explanation:
When calculating the melting temperature in the DNA primers, we use the formula:
( 2 × ( A + T ) ) + ( 4 × ( G + C ) )
From the above formula; it is obvious that G and C have a greater tendency of participation when determining which DNA primers that have the highest melting temperature.
A. GGGGAAATTTCCCC = 8
B. AAAAGGGCCCTTTT = 6
C. AAAAGGCCTTTT = 4
D. GGGAAATTTCCC = 6
From the given options, we can see that option A have the highest component of G and C.
2. Describe one way your body responds to a hot environment, and explain how this response helps to keep your body temperature from rising too high
HELP ASAP!!!
The lens in the eyepiece of a reflecting telescope breaks. How will this most affect the function of the telescope?
Answer:
A: Magnified images will appear upside down
Explanation:
Edge 2020
Help me please, thanks so much
Unhealthy ecosystems are created by
Answer:
Removal of plants, and invasive species.
Explanation:
Describe how waves behave when they interact with a barrier or boundary.
Answer:
Reflection involves a change in direction of waves when they bounce off a barrier; refraction of waves involves a change in the direction of waves as they pass from one medium to another; and diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path.
Which of the following is a primary producer?
а
Blue Heron
b
Wild Rice
с.
Bacteria
d
Pike Fish
Plz help answer quick thank you
What is one role that lipids play in the body?
They store coded information about heredity.
They make up the contracting structures of muscles.
They make up structural parts of cell membranes.
They provide a quick source of energy for cells.
Answer:
UMMMMMMM
Explanation:
HELP ASAP!!!!!!
In which direction of the wave motion do longitudinal waves transfer energy
Answer:
B- Parallel
Explanation:
just took the test
Which are the most abundant elements in the bio molecules?
Answer:
carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur
Answer:
carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
Explanation:
hope this helps, have a nice day.
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What did you know about Nerves? Explain the types of Nerves.
What a the difference between microfilaments and microtubules?
Answer:
The main difference between microtubules and microfilaments is that microtubules are long, hollow cylinders, made up of tubulin protein units whereas microfilaments are double-stranded helical polymers, made up of actin proteins.
A group of 250 women over the age of 40 are recruited for a study to determine the effects that calcium has on bone health. Half of the participants are given a calcium supplement and the other half are given a placebo. If 13 women on calcium develop osteomalacia and 27 women not on the placebo develop osteomalacia, the relative risk for developing osteomalacia for women over 40 on a calcium supplement is 0.48 when compared to those women not taking a calcium supplement. This indicates that taking calcium has no effect on the population of interest's health because the relative risk is less than 1.0.
A. True
B. False
Answer:
A. True
Explanation:
The result indicates that taking calcium has no effect on the development of osteomalacia in the women. This is because, of the over 120 women placed on the calcium supplements, it happens to be minimal number of people ( less than 20 people) that develop the osteomalacia disease of the bone.
how does cancer affect our body tissue
Answer:
Cancer is the uncontrolled growth of abnormal cells in the body. Cancer develops when the body's normal control mechanism stops working. Old cells do not die and instead grow out of control, forming new, abnormal cells. These extra cells may form a mass of tissue, called a tumor.
hope this helps you!! ;)))
Write a paragraph.
Assume a cell has a membrane potential of -70 mV and a Cl- equilibrium potential of -81 mV. If the cell membrane is permeable to Cl-, will there be net movement of Cl- into or out of the cell? Explain.
Answer:
Cl- ions will move inside the cell.
Explanation:
When the equilibrium potential and is equal to membrane potential, the net charge across the membrane is equal to zero and therefore there is not movement of ions across the membrane. However, in this case, the membrane potential is -70 mV, while the equilibrium of negatively charged Cl- ions is -81 mV. In consequence, Cl- ions will tend to move inside of the cell.
which part of the atom always has the same number?
Answer:
electrons as protons
Explanation:
Nitrogen is a component of
Explanation:
Nitrogen is a component of amino acids and urea.
Hope this helps
Answer: Amino acids and urea
Explanation: Amino acids are the building blocks of all proteins.
Matthew records the temperature outside for one day. From 10:00 a.m. to 12:00 p.m., the temperature rises 4°C. From 12:00 p.m. to 2:00 p.m., it rises another 3°C. From 2:00 p.m. to 4:00 p.m., it drops 2°C. Which of the following predictions about how the temperature will change between 4:00 p.m. and 6:00 p.m. is most reasonable?
Group of answer choices:
The temperature will drop 14°C.
The temperature will stay the same
The temperature will rise 3°C.
The temperature will drop 4°C.
Answer:
the tempature will drop 4 degrees c
Explanation: