Answers
Answer:
Explanation:
Related Questions
23. Which of the following explains nitrogen fixation. *
Answers
Answer:
Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a nature or an industrial mean to a form of nitrogen such as ammonia.
The lower the pH, the more / less the concentration of H+. The lower the pH, the more acidic/basic the solution.
Answers
The lower the pH, the more the concentration of H+. The lower the pH, the more basic the solution.
A cell membrane is very specific about what it allows across. How does t help the cell?
Answers
Answer:
Explanation:
The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space) which protects the cell from its environment.[1][2] The cell membrane consists of a lipid bilayer, including cholesterols (a lipid component) that sit between phospholipids to maintain their fluidity at various temperatures. The membrane also contains membrane proteins, including integral proteins that go across the membrane serving as membrane transporters, and peripheral proteins that loosely attach to the outer (peripheral) side of the cell membrane, acting as enzymes shaping the cell.[3] The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.[4] In addition, cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling and serve as the attachment surface for several extracellular structures, including the cell wall, the carbohydrate layer called the glycocalyx, and the intracellular network of protein fibers called the cytoskeleton. In the field of synthetic biology, cell membranes can be artificially reassembled
How many bacteria will there be after four hours from a single bacterium that divides to produce two cells every 15 minutes
Answers
Answer:
65,536 cells
Explanation:
According to the question, a single bacterium will divide into new cells every 15minutes. Since there are four 15 minutes in one hour, which is 60 minutes, a single bacterium will have divided (4×60/15) times =
= 240/15
= 16 times.
Since a single bacterium will divide 16 times in four hours cells, then in four hours, a single bacterium will have divided into 2^16 = 65536 new cells.
Note that, the number of cells a bacterium cell that will divide in two can be expressed as 2^n where n is the number of times
If a bacterium divides into 2 every 15 minutes, there would be 65536 bacteria after four hours.
The bacterium divides into 2 every 15 minutes. Thus, the cell will divide:
60/15 x 4 = 16 times in 4 hours
Thus:
First division = 2 cellsSecond division = 4 cellsThird division = 8 cellsFourth = 16 cellsFifth = 32 cellsSixth = 64Seventh = 128Eighth = 256Ninth = 512Tenth = 1024Eleventh = 2048Twelfth = 4096Thirteenth = 8192Fourteenth = 16384Fifteenth = 32768Sixteenth = 65536More on bacterial division can be found here: https://brainly.com/question/621474
Polar molecules have ends or poles that are partially charged. The opposite ends of a polar molecule will
have____.
A. the same type of charges
B. opposite charges
Answers
Explanation:
Oxygen is more electronegative than hydrogen so the electrons of the covalent bonds spend more time closer to oxygen than hydrogen. ... They are linked by hydrogen bonds holding the substance together.
Answer:
B. opposite charges
Explanation:
Polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end.
Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms.
If a population has no known predators and plenty of available resources, how might that population change
Answers
A person’s will be the same on Jupiter and Earth. A person’s will be greater on Jupiter than on Earth.
Answers
Answer:
Greater on Jupiter
Explanation:
Gravity depends on mass. Jupiter has more mass than Earth so its gravity is two and a half times greater. Therefore a person will weigh more on Jupiter.
Answer:
A person will be greater on Jupiter than Earth. The surface gravity is having is larger than Earth’s by roughly 2.4 times. So, if you weigh 100 pounds on Earth it would be 240 on Jupiter. Hopefully this helps! Feel free to mark this as brainliest!
During one year, seven coyotes in a population die. Eight immigrate into the population, but none emigrate. If the overall population growth is 13 coyotes, what was the birth rate of coyotes during the year? 35 points
Answers
Immigration= 8
Emigration= 0
Population growth= 13
Let’s suppose that the birth rate for the given population is x.
Population growth = (birth rate+immigration) - (death rate+emigration)
13=(x+8)-(7+0)
13=x+1
Move the variable to the left side and change its sign.
-x+13=1
Move the constant to the right side and change its sign
-x=1-13
-x=-12
x=12
Answer: x=12
Hope this helps ʕ•ᴥ•ʔ
Answer:
12
Explanation:
consists of 3 types that work together to make proteins.
a. DNA
Ob.RNA
Ос. АТР
d. None are correct
Answers
Answer:
d none are correct
Explanation:
Can you help me i will give you a branlist
Answers
Answer:
It means Practice makes Perfect
Explanation:
Certain unusual aspects of brain structure were observed in the brain of Albert Einstein. One interpretation is that he was born with certain differences in his cortex from others that encouraged his scientific and intellectual abilities. What do you think of this explanation and what do you think could be an alternative interpretation
Answers
Answer:
It seems a plausible inference. An alternative hypothesis is one in which this anatomical difference is present in low population frequency, thereby further scientific observations are needed to confirm (or reject) this hypothesis
Explanation:
Albert Einstein's brain exhibited an unusual anatomical conformation in the prefrontal cortex. Intriguingly, this brain area is involved in abstract thinking, thereby it has been suggested that the amazing cognitive capacities of Einstein may be due to his prefrontal cortex. A way to test this hypothesis is by an observational study with the aim at determining if this feature is exclusive of Einstein's brain.
Mohammed is a taxi driver in London. As he navigates the city's thousands of streets and intersections, the
part of his brain devoted to spatial memory increases in size. This BEST illustrates:
Answers
Answer:
This BEST illustrates: plasticity.
Explanation:
Which three items should you be able to find in or near the sink when your lab is finished ? a. Used lab equipment, specimens, paper towels b. Chemical waste, used gloves in the sink, used paper towels c. Soap, paper towels, scalpel blades used in your lab d. Soap, paper towels, sharps container
Answers
Answer:
I would say the answer is C.
Explanation:
All fish nitrogen into the water as ammonia and organic nitrogen. These chemicals are byproducts of their metabolism and respiration.
Answers
Answer:
The correct answer would be - release/excretes.
Explanation:
In ponds, rivers, or similar ecosystem nitrogen cycle is completed with the help of the fishes. In this ecosystem, the nitrogen cycle initiates with the eating plants or fish food by the fishes and performs metabolism and cellular respiration which produces byproduct ammonia and organic nitrogen as animal waste.
This waste is released or excreted by the fish in the water where the beneficial bacterium helps in restoring nitrogen back to the atmosphere by breaking these wastes.
4. Adaptive radiator
different habitats and few competitors, thus diversifying rapidly into several new
O True
O False
5.
increases the frequency of adaptive mutations in a population over time.
(select only one answer)
O Fitness
O Natural selection
Artificial selection
Adaptive radiation
6. Any change in allele frequencies in a gene pool is called
2
(select only one answer)
natural selection
Answers
Answer:
The correct answer is-
4. true
5. Natural selection
6. microevolution
Explanation:
Adaptive radiation is a cycle where living beings diversifying rapidly from a familial or an ancestral species into a huge number of several new types, especially when there are new environmental aspects present such as different habitats and few competitors.
Thus, it is a true statement.
Natural selection is the cycle through which a population or a species of living beings adjust and change over the period of time. natural selection just acts upon the heritable attributes of a population by choosing for advantageous alleles or and in this manner increasing the frequency of these adaptive alleles in the population.
Thus the option Natural selection is correct.
Changes inside a genetic pool from happening to one generation to another is known as microevolution. Allele frequencies in a population may change because of, natural selection, mutation, genetic drift, and genetic flow.
Thus, the correct answer is - microevolution.
PLS ANSWER ASAP 100 POINTS. Which of the following choices A, B, C or D best describes the enzyme reaction graph below? Justify your choice.
Answers
Answer:
you havent given a graph.
Explanation:
In Sl measuring system what is the unit used for measuring length? *
Answers
Answer:
Gavuva
Units used in measuring long distances included the "Gavuva", "Yoduna", and "Usaba" (plurals Gavu and Yodun - a Yoduna was 4 Gavu) and the "hoo kiyana dura", which was the audible distance of a shout of 'hoo' by a person. Base of these system of measuring length was the human body.
Explanation:
Humus is made of
A. weathered rock
B. fossils of ancient organisms
C. minerals
D. decaying plants and animals
Answers
Hope this helps!
Which type of sensory receptor enables you to see?
Answers
Answer:
the type of sensory receptor that enables an individual to respond to see is the sensory receptor called, photoreceptor.
HOPE THIS HELPS!
Which was a consequence of the Haymarket Square Riot?
eroded support for the Knights of Labor
boosted support for the Knights of Labor
eroded support for the American Federation of Labor
boosted support for the American Federation of Labor
Answers
Answer: A. eroded support for the Knights of Labor
Explanation: Trust me!
Answer: eroded support for the Knights of Labor
Explanation:
I got it right on the test :)
what will happen if there is no mitrochondria in a cell
Answers
I need some help! What cell structure goes to what? The structures as well as the descriptions are below
Match each cell structure below with its major functions.
lysosome
vesicle
nucleus
Golgi apparatus
chloroplast
smooth endoplasmic reticulum
nucleolus
rough endoplasmic reticulum
ribosome
mitochondrion
1.
contains chlorophyll, site of photosynthesis
2.
contains chromosomes, directs cell’s activities
3.
contains hydrolytic enzymes
4.
membranous network that detoxifies and helps synthesize lipids
5.
membranous network that helps synthesize proteins
6.
modifies and stores the products of the ER
7.
site of cellular respiration and ATP production
8.
site of protein synthesis
9.
site of ribosomal RNA synthesis
10.
small membrane-bound sac within a cell
Answers
Answer:Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Which of the following are true of cells? Select the following
( WILL MARK BRAINLIEST)
Please help fast!
_ cells can be categorized as prokaryotic and unicellular
_ All cells have a nucleus
_ All cells have a cytoplasm
_ Most cells have some type of genetic material
_ All cells are surrounded by a membrane
Answers
Answer:
1 False all cells can be categorised as prokaryotic and eukaryotic, and as multicellular and unicellular ( please note that these are two different categories)
2 False , not all cells have a proper well defined nucleus as prokaryotic cells contain nuclear material instead of a nucleus
3 True
4 True
Can you help me please help i will give you a branlist and it science
Answers
Answer:
A.) protons and neutrons are in the nucleus
Answer and Explanation:
The subatomic particles that can be found in the center of a nucleus are protons and neutrons. So, A.
3
Select ALL correct answers: Which four of the following are the major types of macromolecules?
A Carbohydrates
B Chromosomes
c Lipids
D Lysosomes
<
E Nucleic acids
F Proteins
Answers
Answer:
Carbohydrates, lipids, proteins, and nucleic acids
Explanation:
why is carbon the most versatile element in living organisms?
Answers
Answer:
Because it has four electrons in its second orbital, which can accommodate eight, carbon can combine in many different ways, and it can form very large molecules. Carbon bonds are strong and can stay together in water. Carbon is such a versatile element that almost 10 million different carbon compounds exist.
6.What are the Interdisciplinary fields that are linked to Environmental
Science?
Answers
Answer:
Environmental science is an interdisciplinary academic field that integrates physical, biological and information sciences (including ecology, biology, physics, chemistry, plant science, zoology, mineralogy, oceanography, limnology, soil science, geology and physical geography, and atmospheric science).
2. Name two products that come from living things that are used to aid in human health and healing. Discuss where these products come from and what they do.
Answers
Answer: water and wart
Explanation: so we can live and walk
Asap!!! I need urgent help, this is biology, and I don't understand much
Answers
dependent variable is what is changing is response to the independent variable, so the plant growth, time it takes for baby to quiet, etc.
put hypothesis in “if..then..” statement by putting the independent variable and then the dependent variable in the blanks.
for example, “if the amount of water is increased, then the plant growth will increase”
“if classical music is played, then the baby will quiet faster”
hope that helps
Pls helpppp
Word Bank
protons neutrons
nucleus mass atom electron
CDD2E2 large small electron cloud electrons
small
more
electrical
same
А
consists of the following subatomic particles known as
a or create
and
The
of the atom
can be determined from the number of
and neutrons.
as done
have a positive charge, and
your work
have a negative charge. When an atom has the same number
of protons and electrons, then the atom does not have a
charge. An atom also has
that are located on the outside of
the
This area is known as the
The
Comento
mass of the
is smaller than the mass of the protons and
Answers
1. Nucleus
2.Proton
3. Neutron
4. Mass
5. Proton
6 Proton
7 Electron
8. Electrical
9. Electrons
10 Nucleus
11 Cloud
12 Electrons
13 Neutrons