Answer:
they have no cell walls.
Explanation:
Mycoplasmas that belong to Firmicutes are considered as pleomorphic because they have no cell walls in their structure. Mycoplasmas have the following characteristics i.e. the smallest mycoplasmas are 125–250 nm in size, they are highly pleomorphic because they lack a rigid cell wall and instead of cell wall they are bounded by a triple-layered “unit membrane” that contains a sterol in its structure.
In addition to highly repeated DNA sequences and unique (single-copy) DNA sequences, a third class of DNA exists. What is it called, and what types of elements are involved in it
Answer:
long-read sequencing
Explanation:
a method of dna sequencing under active development
Days when the Sun’s light hits both hemispheres equally are called __________.
A.
rotations
B.
revolutions
C.
equinoxes
D.
solstices
Answer:
Equinox!!!
Explanation:
Answer:
it is an equinox.
Explanation:
Equinox
days when the suns light hits both hemispheres equally
hours of daylight and darkness
takes place during solstices.
write an account of the different methods of protecting endangered species of animals and plants around the world. include the use of legalisation in your answer 6
QER
Answer:
Provide suitable place, making laws and reduce pollution.
Explanation:
Provide suitable place where they can breed without disturbance, making laws to forbit hunting of endangered species and reduce pollution are the different methods that can protect endangered species of animals and plants around the world. For increase in population, suitable environment is required so that they have no predators or other factor that adversely affect their growth. The laws to forbit hunting or killing has also a significant effect on endangered species. Pollution is the main reason for change in the environment that make the environment not suitable for animals and plants.
According to evolutionary theory, species that exist today are the result of a
slow, continuous change of living things over time. Why is this considered to
be a theory and not a law?
A. A law is based on mathematical calculations. Evolutionary theory
is a description based on observations.
O B. A law is supported by extensive research. Evolutionary theory is
an educated guess.
O
C. A law describes natural events but does not attempt to explain
them. Evolutionary theory is an explanation of how living things
have changed over time that is well supported by scientific
evidence.
O D. A law has been proved with scientific evidence. Evolutionary
theory may change when new evidence is found that does not
support the theory.
Answer:
It's answer could be A aur B
Explanation:
not sure but I know that this theory is given by dar VIN
define the photosynthesis?
Answer:
PHOTOSYNTHESIS is a process in which green plants and other certain organisms convert water, carbon dioxide and other minerals into energy rich molecules and oxygen using the light energy.
hope it helps
have a nice day
Answer:
Photosynthesis is a process through which plants and other organisms transform light energy into chemical energy, which is then released to power the organism's activities through cellular respiration.
What is the difference between an artery and a vein?
1 An artery carries blood away from the heart; a vein carries blood to the heart.
2 An artery is responsible for carrying blood; a vein is responsible for gas exchange.
3 An artery is responsible for gas exchange; a vein is responsible for carrying blood.
4 An artery carries blood to the heart; a vein carries blood away from the heart.
1 An artery carries blood away from the heart,a vein Carrie's blood to the heart
Answer:
1. An artery carries blood away from the heart; a vein carries blood to the heart.
Explanation:
An artery carries away oxygen-rich blood from the heart to other body parts, whereas a vein takes blood low in oxygen back to the heart for oxidation.
in your own words, what is the definition for Lysine?
Select the correct answer. Which statement correctly explains the polarity of the water molecule? A. The hydrogen end of the molecule has a partial negative charge and the oxygen end has a partial positive charge. B. The oxygen end of the molecule has a partial negative charge and the hydrogen end has a partial positive charge. C. Both ends of the molecule have a partial negative charge, which attracts the other water molecule towards itself.
Answer:
option B) The oxygen end of the molecule has a partial negative charge and the hydrogen end has a partial positive charge.
Justification:
The electronegativity of an element accounts for its relative ability to attract electrons.
Being oxygen more electronegative than hdyrogen (the electronegativity of oxygen is 3.44 while the electronegativity of the hydrogen is 2.20), the electron density will be displaced toward the oxygen, letting it with a partial negative charge and the hydrogen with a partial positive charge.
Finally, since the charge is not symmetrical distributed around a center of the molecule, the molecule ends being polar.
Which describes the role of
oxygen in photosynthesis?
• It is a reactant, so it is released by the plant.
O It is a
product, so it is released by the plant.
• It is a reactant, so it enters the plant.
• It is a product, so it enters the plant.
Question 17 of 25 Look at the protein below. Which could be its function? A. Storing energy B. Moving material into cells O C. Transporting oxygen PREVIOUS
How do somatic and inherited mutations differ?
Answer:
Inherited mutations exist in all cells in the body and somatic mutations only exist in the cell type that mutated.
Which is a symbol that represents SI units for temperature?
°C
g
L
°F
The answer is option a degree Celsius
Answer:
the answer is A on edge!
Explanation:
This table shows the codons found in messenger RNA (attached). Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Val-His-Thr?
A. GUA-CAU-ACC (THIS IS WRONG)
B. GTA-CAT-ACC
C. CAT-GTA-TGG
D. CAU-GUA-UGG
Please explain, I'm very confused about this topic and I want to learn about it. No false answers or you will immediately be reported. Thanks in advance!
Answer:
A
Explanation:
The correct answer would be option A - GUA-CAU-ACC
Looking at the table of codons, for the amino acid Val, the first base (which is on the 1st column in the 6th row) is G while the second base (2nd column, 2nd row) is U. The third column can be any of U, C, A, or G (6th column, 4th row). Hence, GUA is plausible
For the amino acid His, the first base is C (1st column, 2nd row), the second is A (4th column, 4th row) while the last could be any of the 4 bases. Hence, CAU is plausible.
For the amino acid Thr, the first base is A (first column, 5th row), the second is C (3rd column, 2nd row) while the 3rth could be any of the 4 nucleotide bases. Hence, ACC is plausible.
Therefore, the correct sequence of nucleotides for Val-His_Thr would be GUA-CAU-ACC
In the electron transport chain, which structure forms a channel in the inner membrane of the mitochondria and adds phosphate to ADP
Answer: ATP synthase
Explanation:
The ATP synthase complex is an enzyme located in the inner membrane of the mitochondrion that catalyzes the synthesis of ATP from ADP, a phosphate group and energy supplied by a proton (H+) flux. This ATP synthesis occurs during cellular respiration, which is a set of biochemical reactions by which certain organic compounds are completely degraded by oxidation to inorganic substances. This process provides usable energy to the cell in the form of ATP.
During cellular respiration, ATP synthesis is termed oxidative phosphorylation and the proton flux takes place between the intermembrane space and the mitochondrial matrix. ATP synthase produces ATP when protons flow through it. The proton flow creates a pH gradient and an electrochemical gradient. This proton gradient is used by ATP synthase to form ATP via oxidative phosphorylation. ATP synthase acts as an ion channel that "returns" protons to the mitochondrial matrix. During this return, the Gibbs free energy produced during the generation of the oxidized forms of electron transporters is released. This energy is utilized for ATP synthesis. It must then be considered that the electron transport chain and oxidative phosphorylation are coupled by the proton gradient.
The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of:
Answer:
group translocation
Explanation:
Group translocation is a specialized type of active transport that moves substances across biological cells. In group translocation, substrates are chemically modified during transport across the cell membrane. An example of group translocation is the phosphotransferase system, which is used by bacteria for sugar uptake using phosphoenolpyruvate as the source of energy. This system removes the phosphate groups from phosphoenolpyruvate and adds these groups to glucose molecules in order to form glucose 6-P.
During glycolysis, glucose is broken down into two molecules of pyruvate.
A diagram shows the conversion of a glucose molecule to 2 pyruvic acid molecules. In this process, 2 A T P form 2 A D P, 2 N A D produce 2 N A D H, and 4 A D P produce 4 A T P.
What is the main transformation that occurs during glycolysis?
Glycolysis produces ATP and pyruvate by oxidizing water.
Glycolysis produces ATP and pyruvate by oxidizing glucose and NAD+.
Glycolysis produces pyruvate, ATP, and NADH by oxidizing glucose.
Glycolysis produces CO2, ATP, and pyruvate by reducing glucose.
Answer:
Glycolysis produces pyruvate, ATP, and NADPH by oxidizing glucose. During cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and ATP.
Explanation:
Answer:
C.
Explanation:
Now you are going to use station data to write weather forecasts for several cities for today. Write your
forecasts in complete sentences. Assume you are writing for the general public Be sure to discuss
temperatures, winds, and possible precipitation
Answer:
Temperatures and direction of wind are the following.
Explanation:
Los Angeles has highest temperature i.e. 56 and lowest temperature of 47 degree Fahrenheit and wind moves towards Southwest direction.
Salt Lake city has highest temperature i.e. 42 and lowest temperature of 36 degree Fahrenheit and wind moves towards West direction.
Chicago II has highest temperature i.e. 28 and lowest temperature of 27degree Fahrenheit and wind moves towards Midwest direction.
Philadelphia has highest temperature and lowest temperature is the same i.e. 56 degree Fahrenheit and wind moves towards Northeast direction.
New Orleans has highest temperature i.e. 75 and lowest temperature of 70 degree Fahrenheit and wind moves towards South direction.
At the back of the brain is the __________ which is primarily responsible for processing information about light and movement
Answer:
Cerebellum
................
Which of the following parts of the brain is related to controlling water concentration and Osmosis?
A. Basal Ganglia
B. Thalamus
C. Hypothalamus
D. Pituitary Gland
Answer:
The correct answer is - D.
Explanation:
The pituitary gland is the gland that releases the ADH hormone that helps in reabsorption and regulates the osmoregulation and water concentration in the body. Antidiuretic hormone is an important hormone in water concentration regulation.
Hypothalamus is the part of the brain other than the Pituitary Gland that helps in controlling water concentration and Osmosis by controlling pituitary gland.
The correct answer is - D.Pituitary Gland
An ecosystem contains biotic and abiotic
factors. Which of the following would be
an abiotic factor?
A. a microorganism on an animal
B. fungi growing on a tree
C. nutrients in the soil
Answer:
nutrients in the soil is the correct answer
The correct answer is option (c) nutrients in the soil.
What is biotic and abiotic factors ?
Biotic and abiotic are the two essential factors responsible for shaping the ecosystem.The biotic factors refer to all the living beings present in an ecosystem, and the abiotic factors refer to all the non-living components like physical conditions and chemical agents in an ecosystem. Therefore, both the abiotic and biotic resources affect the survival and reproduction process.
Why other options are incorrect?
Option (a), (b) are incorrect as they are biotic factors.
learn more about biotic and abiotic factors below,
https://brainly.com/question/24208233
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I NEED HELP ASAP PLZZZZZZZZZZZZZZZZ
Answer:
B. Bald eagles are hunted until near extinction, population recovers
Explanation:
A bottleneck effect can arise when the population of a species is drastically reduced by an occurrence. Human activities plays a major role in regard to creating a bottleneck effect in our present day. Human activities such as overhunting result into bottleneck effect. When overhunting reduces the population of a particular species, the few individuals left would have a reduced genetic variation which is not representative of the original population. The few individuals left further reproduces individuals of their kind carrying a genetic composition that is different from the original gene composition of the old population.
The case of the hunting of bald eagles until near extinction before they begin to recover is a perfect case of the bottleneck effect. Only a small proportion of the eagles original population survives. Generic variation reduces. The genetic variation in the new population of the bald eagles will be different from that of the original population.
6. What is the relationship between genes and alleles?
Answer:
A gene is a unit of hereditary information. Except in some viruses, genes are made up of DNA, a complex molecule that codes genetic information for the transmission of inherited traits. Alleles are also genetic sequences, and they too code for the transmission of traits. So, what it is the difference between a gene and an allele? The short answer is that an allele is a variant form of a gene.
Explanation:
What are limiting factors for plant growth
Answer:
factors are;extremely hotdrought gravity ( I suppose ) the amount of minerals in the soilHAVE A NİCE DAY
Explanation:
greeetings from Turkey ツ
list out the five micro organisum based on their classification
Answer:
Viruses, Bacteria, Fungi, Archaea, Protists
Explanation:
[tex]what \: is \: cell \: \: \: {?}[/tex]
Answer:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell
Explanation:
❣️(◍Jess bregoli◍)❣️#keep learning!!
Answer:
hello there,
A cell are the basic building block of all living thing. "The human body is composed of trillions of cells. ... Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell"
Explanation:
i got this from an article i used for a cell project. But it gives you an understanding of a cell is
Multiple Choice Questions.
1. The leaf is attached to the stem at
(a) Petiole
(b) Node
(c) Spine
(d) Internode
Classify the hypotheses about fluids on Earth as falsifiable or non-falsifiable.
Floating in the Great Salt Lake
in Utah is a lot of fun.
The Great Salt Lake is salty due
to a high rate of water evaporation
in the desert climate.
Magma erupting from the mantle
below Earth’s surface is hot and
fluid in nature.
Magma leaks up from the mantle
below Earth’s surface and spreads
out, forming a new ocean floor,
thereby causing land forms above
to move.
Answer:
Magma leaks up from the mantle below Earth's surface and spreads out, forming a new ocean floor, thereby causing land forms above to move;
Falsifiable
The Great Salt Lake is salty due to a high rate of water evaporation in the desert climate;
Falsifiable
Magma erupting from the mantle below Earth's surface is hot and fluid in nature;
Falsifiable
Floating in the Great Salt Lake in Utah is a lot of fun;
Non-Falsifiable
Explanation:
PLATOPlease leave a rate, and thanks! I hope this helps. :)
Because the flow speed in your capillaries is much less than in the aorta, the total cross-section area of the capillaries considered together must be much larger than that of the aorta. Given the flow speeds noted, the total area of the capillaries considered together is equivalent to the cross-section area of a single vessel of approximately what diameter
Answer:
Diameter of capillaries is 30-40 µm in diameter while on the other hand, the diameter of aorta is 4 cm.
Explanation:
The diameter of capillaries is 30-40 µm in diameter while on the other hand, the diameter of aorta is 4 cm which is the main reason for higher flow speed of the blood in the aorta as well as more blood is transported in the aorta. If the total area of the capillaries considered together is equivalent to the cross-section area of a single vessel of aorta then the flow speed of both is similar due to similar area.
Give ONE reason why cell B(white blood cells) may have more mitochondria than cell A(sperm cells)?
Answer:
because cell B has more energy demand that Cell A so it will have more mitochondria
Identify the biotic factor of an ecosystem from the following
Answer:
Ecosystems are influenced by both biotic and abiotic factors. Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.