PLEASE HELP
one feature of all DNA molecules is that they are:
a. single-stranded
b. double-stranded
c. triglycerides
d. disaccharides

Answers

Answer 1

Answer:

B.  double stranded

Explanation:


Related Questions

When a plant is genetically identical to its parent plant what is this called

Answers

Hello! My name is Zalgo and I am here to help you out on this amazing day. The way that the younger plant looks the same as the parent plant is because of "Asexual Reproduction". Asexual Reproduction is how plants can reproduce. Considering it is a plant and not a human asexual means that plants reproduce without the need of "sexual intercourse".

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What are the four phases of mitosis

Answers

Answer:

prophase, metaphase, anaphase and telephase

Explanation:

The 4 phases in order are prophase, metaphase, anaphase, telophase.

If u need explanation on any of them let me know in the comments:)

Which of these processes always causes a physical change of the shape of a material ?

Answers

Answer:

Grinding

Explanation:

Cause grinding can change the shape of any object.

While heating may melt some things it won't melt all. Some things don't burn and weighing doesn't change any thing. That's just seeing how much something weighs.

Which disease is typically linked to both genetics and lifestyle choices?
A- sickle cell anemia
B- diabetes
C- color blindness
D- food poisonin

Answers

Answer:

B; diabetes

Explanation:

You can get diabetes because:

your body doesn't use insulin as well as it shouldof lack of excercise, poor diet, and obesity

Final answer:

Diabetes is the disease most commonly associated with both genetic factors and lifestyle choices, involving multiple genes and influenced by environmental and lifestyle factors.

Explanation:

Disease Linked to Genetics and Lifestyle Choices

The disease that is typically linked to both genetics and lifestyle choices is diabetes. Unlike sickle cell anemia, which is a genetic disorder caused by mutations in just one gene, diabetes is a multifactorial disorder with both genetic and lifestyle components. Conditions such as heart disease, obesity, and diabetes do not have a single genetic cause; they are likely associated with the effects of multiple genes in combination with lifestyle and environmental factors.

What achievement does king think Nobel prize committee is recognizing him for

Answers

his efforts to fight oppression without violence

Answer:

The correct answer is option D. his efforts to fight oppression without violence .

Explanation:

Nobel prize is the annual awards that are presented to the people done extraordinary performance in different fields such as peace, physics, chemistry and other fields.

All three options except option (d) his efforts to fight oppression without violence,  are not achievements but a reaction or feeling. He can get nobel prize for peace for his efforts to fight oppression without violence .

Thus, the correct answer is option D. his efforts to fight oppression without violence .

what is the definition these biological terms

haemolysis
plasmolysis
crenation
turgidity
flaccidity

Answers

Answer:

While crenation occurs in animals cells, cells that have a cell wall cannot shrink and change shape when placed in a hypertonic solution. ... Instead, the protoplasm shrinks, leaving gaps between the cell wall and cell membrane. The cell loses turgor pressure and becomes flaccid.

Explanation:

I thick that can help you it help me.

Key biological terms like haemolysis, plasmolysis, crenation, turgidity, and flaccidity primarily refer to the effects of different solutions on cells. Haemolysis and crenation involve animal cells while plasmolysis, turgidity, and flaccidity affect plant cells.

The definitions for the following are:

Haemolysis: This occurs in red blood cells when they are placed in a hypotonic solution, causing them to swell and burst due to the influx of water.Plasmolysis: This is the process by which the cell membrane detaches from the cell wall and constricts the cytoplasm when a plant cell is in a hypertonic solution, resulting in the cell losing its turgor pressure and becoming plasmolyzed.Crenation: This occurs in animal cells when placed in a hypertonic solution, causing them to shrink and form irregular shapes due to the loss of water.Turgidity: This refers to the stiffness and rigidity in plant cells caused by the absorption of fluid, making the cell turgid.Flaccidity: This describes a state where plant cells lose water, leading to decreased pressure on the cell wall and resulting in a droopy, floppy cell structure.

In the triangle below what is the measure of

Answers

Answer:

60 degrees

Explanation:

All of the angles in a triangle add up to 180 degrees

This triangle is an equilateral triangle, meaning all of the sides are the same legnth and all of the angles measure the same degree.

If each angle was 60 degrees, 60 + 60 + 60 = 180.

So, the answer is 60 degrees.

I hope this helps! :)

In the triangle below 60 degrees is the measure of ∠A. Thus, the correct option is D.

All of the angles in a triangle add up to is 180 degrees.

What is triangle?

This triangle is defined as an equilateral triangle which means all of the sides are of same length and all of the angles measure the same degree.

If each angle has 60 degrees, so the sum of all angles:

= ∠60° + ∠60° + ∠60° = 180°.

So, the correct answer is ∠60° degrees.

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which best describes the process that the pest population has experienced due to this environment change?​

Answers

Answer: Genetic Resistance

Explanation:The use of insecticides as such does not create resistance but it can develop through the overuse or misuse of an insecticide against a pest species. Resistance develops when naturally occurring genetic variation allows a small proportion of the population to resist and survive the effects of the insecticide.

Answer:

Natural selection

Explanation:

What part of the brain is highlighted in the diagram below?

Answers

Answer:

That is the cerebellum.

Explanation:

It‘s main functions are balance + coordination.

The highlighted part represents the cerebellum.

What is cerebellum?The cerebellum, sometimes known as the "small brain," is a structure that lies underneath the occipital and temporal lobes of the cerebral cortex in the back of the brain. Although the cerebellum makes up only around 10% of the brain's overall volume, it is home to more than 50% of the brain's neurons.

What is the function of cerebellum?

The following processes are carried out by the cerebellum:

Maintaining posture and balance- Making postural changes to keep one's equilibrium depends on the cerebellum. It modifies orders to motor neurons to account for changes in body position or variations in the stress on muscles using information from vestibular receptors and proprioceptors. Balance issues are common in patients with cerebellar impairment.

2. coordination of free-will actions -

The majority of actions are made up of several different muscle groups working together and with precision timing. Coordinating the time and force of these many muscle groups to produce fluid limb or body motions is one of the cerebellum's main roles.

3. Neuromotor abilities

Motor learning depends on the cerebellum. Through a process of trial-and-error, the cerebellum is crucial in adapting and fine-tuning motor programming to produce precise motions (e.g., learning to hit a baseball).

4. cognitive processes

Although the cerebellum is well known for its role in motor control, it also plays a role in some cognitive processes, including language.

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18. Look at the figure above. Which position of the earth represents a solstice?

A. Middle of summer
B. Beginning of autumn
C. Beginning of spring
D. Beginning of winter

Answers

Answer:

B)  Middle of summer Is WRONG

Explanation:

Chimpanzees are:

A.Less evolved than humans
B.Direct ancestors of humans
C.The closest living relatives of humans
D.Both a and b

Answers

The answer is c because they kinda look like humans and they act like us
Final answer:

The closest living relatives of humans are chimpanzees; they are not directly our ancestors nor less evolved than us. Instead, both species have been diversely evolving from a common ancestor over millions of years.

Explanation:

Chimpanzees are in fact C. The closest living relatives of humans. Humans and chimpanzees belong to the same family, Hominidae, but are part of different genera.

Despite certain similarities, Chimpanzees are not considered more or less evolved than humans. All species are adapting and evolving to best survive in their particular environments, so it is inaccurate to rank one as 'more evolved'.

It's also not correct to call chimpanzees our direct ancestors as the evolutionary paths of humans and chimpanzees diverged from a common ancestor approximately six million years ago.

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the hollow collection of undifferentiated cells that occurs after fertilization and initial mitosis is called a

Answers

Answer:

Blastula

Explanation:

This mass of cell – called blastomere- surrounds a fluid-filled cavity-blastocoele- formed in the very early stages of development of an embryo in animals, after fertilization and the formation of a zygote. Blastomere cells have high potency and can differentiate into any type of cell.

Answer:

Blastocyst

Explanation:

Penn foster

An area has a few days of low humidity, warm air temperature, and high air pressure. What kind of weather is this
area experiencing?
O fog
O snow
storms
O sun

Answers

Answer:

sun

Explanation:

its right on edge

The type of weather undergone an area that has a few days of low humidity, warm air temperature, and high air pressure is sunny (sun).

What does the weather mean?

The weather can be defined as a group of climatic conditions that characterizes a geographical area in a given period of time.

Weather characterized by low humidity and warm air is said to be caused by several days of sunny conditions (solar radiation).

In conclusion, the type of weather undergone an area that has a few days of low humidity, warm air temperature, and high air pressure is sunny (sun).

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At a fault block, one portion of the block moves upward while the adjacent portion moves downward. What is the upper portion called? A. The graben B. The plateau C. The horst D. The rift

Answers

Answer:

C. The horst

Explanation:

At a fault block, one portion of the block moves upward while the adjacent portion moves downward. This is called the horst.

Answer: C. The horst

Explanation:

In geology, a horst is a geological feature. In this the one part of the earth crust remains raised over the the other. A horst is typically higher than the land surrounding it. A horst forms when the part of the crust of the earth gets pushed upwards due to geological disturbance and it typically forms between the two faults.

what happens in meiosis during telophase 2

Answers

Answer:

Option (B).

Explanation:

Meiosis may be defined as a type of cell division in which four daughter cells are produced from the single parent cell. The resulting daughter cells contain half number of chromosomes as compared with the parent cell. This type of division is also known as reduction division.

During telophase 2, the nuclear envelope forms, chromosome moves towards opposite poles and the cell follows cytokineses and result in the formation of four daughter cells.

Thus, the correct answer is option (B).

In meiosis during telophase 2 a total of four daughter cells forms. The correct option is B.

The following events occur during telophase 2 of meiosis, the last phase of meiosis II:

The chromosomes reach the cell's opposing poles. Each pole has a haploid pair of chromosomes at this phase.Nuclear envelopes begin to rebuild around the chromosomes that have been split.The spindle fibres separate.Cytokinesis occurs, resulting in cytoplasm division and the development of two distinct daughter cells.

It is vital to note that four daughter cells are generated at the end of meiosis II, each having a haploid pair of chromosomes.

As a result of separate assortment and genetic recombination during meiosis I and meiosis II, these daughter cells are genetically different from one another and from the parent cell.

Thus, the correct option is B.

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This is an organism that obtains its energy from inorganic substances or from the sun.

Answers

Answer:

Autotrophs

Explanation:

They are the producers in the ecosystem.

Autotrophs are organisms that produce food food from sunlight or from inorganic substances via chemical processes.

They obatin their energy by converting very simple materials into complex and useful organic compounds for use in the ecosystem. One of such process is photosynthesis in which green plants uses sunlight and carbondioxide to produce glucose for their nourishment. Another of such process is chemosynthesis.

Most heterotrophs(consumers) relies on this source of energy for their own survival and nourishment.

During childbirth, a hormone produced by the pituitary gland causes muscles of the mother's uterus (or womb) to contract. The more contractions there are, the more hormone is produced.

Which best explains why this occurs?

Answers

Oxytocin is produced during childbirth to dilate the cervix. once the cervix is at a 10, this completes stage 1 and carries on to the birth of a fetus which is stage 2. the cervix being at a 10 also helps with stage 3 which is the delivery of the placenta.
During childbirth oxytocin is produced and secreted by the posterior pituitary gland. The contractions help with the delivery of the fetus.

Oxytocin is regulated by POSITIVE feedback. That is why more oxytocin is produced as the contractions increase.

Where is the energy shown in the equation transferred as a result of photosynthesis?
into water
into the air
into sugars
into the ground
Mark this and return
Save and Exit
Save and Exit bones

Answers

The chemical equation below summarizes the process of photosynthesis. 6CO2 + 6H2O + energy à 6O2 + C6H12O6, into water, air, into the ground energy shown in the equation transferred as a result of photosynthesis. Thus, the correct option is A, B and D.

What is photosynthesis?

Main energy source is the sun that provides all the energy required by the plants. In brief, the light energy from the sun is converted into chemical energy by the plants through the photosynthesis.

The green pigment chlorophyll found in the leaves traps light energy from the sun . This light energy is used to transform water and carbon dioxide .

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The energy from the photosynthesis equation is transferred into sugars, where it is stored in the chemical bonds of glucose and used by organisms in ecosystems.

The energy shown in the equation of photosynthesis is transferred into sugars. During photosynthesis, plants convert the radiant energy from sunlight into stored chemical energy. This energy is captured through a series of reactions that result in the production of glucose and oxygen. The energy is stored in the chemical bonds of glucose, a type of sugar, which organisms use to perform various functions such as movement, growth, and reproduction. This stored energy can then enter ecosystems and continually be transferred from one organism to another through the food chain.

Which codon is the code for the amino acid histidine (His)?

Answers

Histidine consists of CA and either T or C

Options: CAT or CAC

Use a chart to decode :)

The codons that codes for the amino acid histidine (His) are CAC or CAU.

What do you mean by Codons?

Codons may be defined as the relationship between the sequence of nucleotides on mRNA and the sequence of amino acids in the polypeptide.

Therefore, the codons that code for the amino acid histidine (His) are CAC or CAU.

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A species of fly has two alleles for the length of their legs. The allele for long
legs is dominant, and is represented by p. The allele for short legs is
recessive, and is represented by q. If 33 of 100 organisms have short legs,
what is p?
p+ 2pq + oʻ= 1
APEX

Answers

Answer:

[tex]0.43[/tex]

Explanation:

Given -

Allele for long  legs is dominant, and is represented by p

Allele for short  legs is recessive, and is represented by q

Given , 33 of 100 organisms have short legs

According to hardy Weinberg's equilibrium equation -

[tex]p^2+2pq+q^2=1[/tex]

Here [tex]q^2[/tex] represents the frequency of species with short legs.

Thus,

[tex]q^2 = \frac{33}{100} \\= 0.33[/tex]

Hence, frequency of recessive allele "p" is equal to

[tex]q = \sqrt{0.33}\\ 1= 0.57[/tex]

As we know

[tex]p+q=1\\p= 1-q\\p= 1-0.57\\p = 0.43[/tex]

Answer:

The answer is p=.43

Explanation:

AP3X

A part of an ecosystem that can restrict the growth of a population is referred to as

Answers

Im pretty sure its the limiting factor
A part of an ecosystem that can restrict the growth of a population is referred to as the carrying capacity

How is information translated during protein synthesis?
) A. From proteins to nucleic acids
O
B. From amino acids to nucleic acids
O
C. From proteins to amino acids
O
D. From nucleic acids to amino acids​

Answers

Answer:

D. From nucleic acids to amino acids​

Explanation:

In the process of translation, tRNA carry amino acids to the ribosomes that code for specific codons. These codons are groups of nucleotides, carried by the nucleic acid RNA that was transcribed from the DNA located in the nucleus. These amino acids are assembled according to the template of the RNA to form proteins.

Which scientists are credited for the events described in the development of the cell theory?
used the word cell for the structures he observed when he examined a piece of cork under the microscope. was the first person to observe a living cell in a drop of pond water.

Answers

Answer:

The scientists that are credited for the events described in the developments of the cell theory are

THEODOR SCHWANN, MATTHIAS SCHLEIDEN AND RUDOLF VIRCHAW.

ROBERT HOOKE use the word cell for the structure he observed when he was examining a piece of cork under the microscope.

Anton Van Leeuwenhoek first person to observe a living cell in a drop of pond water.

Explanation:

In the year 1830 THEODOR SCHWANN and MATTHIAS SCHLEIDEN explain the developments of the cell theory based on the study they have done on the living tissue. This theory explains that all living tissues are made up of a cell, the basic unit of life is cell and all new cells arise from the preexisting cell,and Rudolf Virchow he also made some important contributions to the cell theory.

In the year 1665, Robert Hooke observed cork with the help of lens, and he observed that the cork is made of compartments, are connected to each other. He named the word as cell, to the structure he has observed in the cork.

Anton Van Leeuwenhoek he used to study the living organisms present in the rainwater, pounds and well water, then in the year 1674 the first time he observed protozoa and after that bacteria.

Answer:ROBERT HOOKE use the word cell for the structure he observed when he was examining a piece of cork under the microscope.

Anton Van Leeuwenhoek first person to observe a living cell in a drop of pond water.

Explanation: I got it right

Mary has type A blood. Her son Bill has type AB blood. Which blood type does Bill's dad have if he is homogenous for blood type?

Answers

The answer is BB I believe because the father is obviously the dominant gene and homo = same and also the dominant genes are always capital

The blood type that Bill's dad has if he is homogenous for blood type is blood type B. The correct option is b.

What is a blood group?

The blood group is the different types of blood present in the organisms. There are four types of blood groups, that are A, B, AB, and O. The blood group is determined by the gene of the parents.

If the mother has A and the son has AB blood group, then the father will have B blood group.

Thus, option b. blood type B, is correct.

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The full question is attached in the image.

Think about a bush in your back yard. Is it alive according to the characteristics of life? Why or why not?​

Answers

Konichiwa~! My name is Zalgo and I am here to help you out on this amazing day. According to my knowledge and evidence, I would say that the bush is very well alive. It grows, it provides you an element that you need to survive, and if you cut it down to a size you like, all it will do is grow back up.

I hope that this info helps! :D

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A mutagen is
A a living thing that has undergone a mutation.
B an agent that causes a mutation in DNA.
C a mutation that has affected one gene.
D a chemical that can poison living cells.

Answers

Answer:

A a living thing that has undergone a mutation.

Explanation:

A mutagen is an agent that causes a mutation in DNA.

The correct option is B .

A mutagen is any physical or chemical agent that has the ability to induce changes in the DNA sequence of an organism. These changes, known as mutations, can alter the genetic information and may lead to various effects on the organism's characteristics or traits.

Mutagens can include chemical substances, radiation, and certain types of viruses that can directly damage the DNA molecule or interfere with its replication or repair processes. Mutagens are significant in the field of genetics and can have both beneficial and harmful effects on living organisms, depending on the context and the specific mutations induced.

Hence , B is the correct option

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what is generation time for bacteria?​

Answers

Answer:

A generation time for bacteria varies from bacteria to bacteria.

Explanation:

The time taken for a bacteria to double in number is known as generation time.

bacteria reproduce very fast and the generation aslo varies. some generation time for other bacteria is 20 minutes while others are 10 and others 30

this generation time is determined by the environment in which the bacteria is hence determining its generation

16. Which excretory organ helps to control the water potential of the tissue
fluids?
(a) Kidneys (b) Skin (c) Liver (a) Lungs (e) Ovary

Answers

The answer is a Kidneys

Answer:

(A).Kidneys  is the correct option.

Explanation:

Kidneys are part of the urinary system, its function is to maintain fluid balance and to regulate and remove the minerals from the blood.

Kidneys control the water potential of the tissue fluids by maintaining the accurate amount of water and it removes the metabolic wastes, which help to maintain the composition of fluids present in the body.

The human body has two kidneys, which control the water potential, excess water is excreted through urine.

Blood through the renal artery is transported to the kidney, where it gets filtered, kidney reabsorbs the useful materials like glucose,water and ions. Once it is purified,it is transfer to the circulatory system and waste material such as salts, water and urea excreted in the form of urine which control the water potential.

Urine is produced by the kidney, by performing this process Kidneys control  the water potential of the tissue fluids.

describe the relationship between fish and coral

Answers

Coral provides shelter and food to herbivorous fish in return for protection from natural enemies, such as seaweeds.

Fish and coral have a symbiotic relationship, where the fish benefit from the protection and food provided by the coral, and the coral benefits from the waste removal and pollination services provided by the fish.

What is a symbiotic relationship?

A symbiotic relationship is a type of relationship where two different species interact with each other in a close and prolonged manner, leading to mutual benefits. The two species involved in this relationship are called symbionts, and their interaction is referred to as symbiosis.

Some common examples of symbiotic relationships include mutualism, commensalism, and parasitism. These relationships are critical for the survival and evolution of many species and play an important role in the balance of ecosystems.

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pls help on time limit

Once a well has reached the water table, it will not run dry.


Please select the best answer from the choices provided

T
F

Answers

HEYA MATE

YOUR ANSWER IS FALSE BECAUSE IN THIS PRINCIPAL EVERY WELL CAN RUN Dry

Apparently the answer is False
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