Answer:
B) Hydrogen Bond
Explanation:
Those are the bonds that the restrictive enzymes unzip and the bonds that hold the complementary bases.
Final answer:
In DNA replication, helicases unzip the DNA molecule by breaking the hydrogen bonds between the nitrogenous base pairs.
Explanation:
DNA replication is a process that involves the unzipping of the DNA molecule. During this process, enzymes known as helicases break the hydrogen bonds between nitrogenous base pairs. This action separates the two strands of the DNA double helix and allows each strand to serve as a template for the creation of a new complementary strand. Consequently, the letter corresponding to the correct answer is B. Hydrogen bonds between complementary bases break during the replication of DNA.
Which is a non-Mendelian trait?
A. A trait with a very dominant form
B. A trait with two alleles C. A trait with no clearly dominant allele
D. A trait controlled by one gene
A trait with no clearly dominant allele a non mendelian trait.
What is a non mendelian trait?Non-Mendelian traits refer to traits that are not transmitted with dominant and recessive alleles from one gene. from one generation to another. Polygenic traits are examples of non-Mendelian because their alleles are located on more than one gene which give room to more alleles and phenotypes. Examples of polygenic traits are hair color and height.
Therefore, A trait with no clearly dominant allele is a non mendelian trait.
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Answer:
C is right
Explanation:
<3
which charcteristic distinguishes the five groups of fungi
Answer:
The five groups of fungi were made o classified on the basis of how they reproduce sexually.
Explanation:
On the basis of their reproductive organs and sexual reproduction, fungi is classified into following five groups:
chytridszygomycetesglomeromycetesascomycetesbasidiomycetesConifer needles have
A. a thick cuticle.
B. sunken stomates.
C. a reduced surface area.
D. all of the above
Answer:
D. all of the above
Explanation:
Conifers are a group of trees which belong to the class of gymnosperms. They are cone bearing plants which means that the seeds are formed in a beautiful cone shaped structure. Some of the trees belonging to this class are shrubs while majority of them are trees.
Some significant features of the leaves of conifers are those mentioned in the question. They have a very heavy cuticle in the region of epidermis for protection of leaves. The stomata are deeply sunken in leaves and are present in the form of layers. Moreover, the leaves are very thin like those of grasses and therefore they have very less surface area as compared to the leaves of other plants like roses.
Please see the conifer leaves in attached picture for better understanding.
What can create variations in color or structure in hair samples?
Dyes
The location on the scalp the sample is pulled from
The length of the strand
All of the above
2) Which of the quadriceps crosses two joints? What are it’s actions?
Answer:
Rectus Femoris
Explanation:
It has an action of extending the knee from a seated position.
I hope this helps, and as always, I am joyous to assist anyone at any time.
Which of the following organs controls body temperature, water level, and carbon dioxide level? A. Lungs B. Pancreas C. Muscles D. Brain
Answer:
Pancreas
Explanation:
The pancreas controls body temperature, water level, and carbon dioxide level.
What principal organ structures are involved in preserving your temperature?The cardiovascular, integumentary, breathing and muscular systems work collectively to help the frame hold a solid inner temperature. If frame temperature rises, blood vessels in the pores and skin dilate, permitting more blood to go with the flow near the skin's floor.
What organ gadget is responsible for temperature manipulation?Hypothalamus is a segment of your mind that controls thermoregulation. while it senses your internal temperature turning too low or excessive, it sends indicators in your muscle groups, organs, glands, and worrying machine.
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An owl eats its prey whole or in large pieces. Summarize what is found in an owl pellet and why it is regurgitated.
Answer:
Sample Answer: An owl’s digestive system cannot break down parts of the prey such as teeth, bones, fur, and exoskeletons. These parts of the prey are compressed into an owl pellet. The owl regurgitates this material so that it can leave the owl’s stomach.
Explanation:
Just did this!!!! Absolutely 100% true!!!!
Answer:
An owl’s digestive system cannot break down parts of the prey such as teeth, bones, fur, and exoskeletons. These parts of the prey are compressed into an owl pellet. The owl regurgitates this material so that it can leave the owl’s stomach.
Explanation:
which of these substances does not protect against invaders in the nonspecific immune response
a- stomach acid
b- antigens
c- digestive enzymes
d- lysozome
B: Antigens
Explanation: Antigens itself are the invaders that causes an infection or a disease in living organism. They do not protect against invaders in non-specific response as they themselves are the ones who are invading the body.
Digestive enzymes are the enzymes that act on a particular substrate for its action at a particular PH.
Stomach acid is the hydrochloric acid that keeps the PH of the stomach low and prevents the growth of unwanted pathogens.
Lysosomes have digestive enzymes in it. It performs the process of phagocytosis.
What is dictyosome????
Answer:are stacks of flap,membrane bound cavities that together compromise the Golgi Apparatus.
Explanation:
Answer:
Dictyosome are cell organelles present in plant cells and perform functions similar to golgi apparatus present in animal cells.
Explanation:
Dictyosome are flat, membranous cavities also called cisternae. It allows formation of plate during cell division. Dictyosome in plant cells are freely present in cytoplasm.
HELP!! Decomposers are important to the biogeochemical cycle because they break down organic matter and make the nutrients available to other organisms. What is the process of breaking down organic nitrogen to ammonia known as?
Answer:
Ammonification
Explanation:
The ammonification is part of the nitrogen cycle. This process occurs when the plants and animals die. The dead plants and animals start to decompose because of the organisms like the fungi and bacteria that manage to decompose them. As they are decomposed, the nitrogen is converted into ammonium by the decomposers. The ammonium is returned into the soil, thus becoming available for the living organisms that can extract it from it, and in that manner continuing the nitrogen cycle.
The YELLOW arrows in the diagram point to what?
A. The templates for new DNA strands
B. The new DNA strands
C. The location of the RNA
D. The location of the hydrogen bonds
The location of the hydrogen bonds.
In his study of pea plants, Gregor Mendel used which method to produce offspring?
O cross-pollination, by using parents that had identical traits
O cross-pollination, by using parents that had different traits
O self-pollination, by using one parent
O random pollination, by using both identical- and different-trait matings
Answer:
B. cross pollination by using parents with different traits in order to see how the genetics took part in their roles
Answer:
the answer is b, cross-pollination by using parents that had different traits
Explanation:
Select which of the following have an impact on the Earth's climate:
Humans
Plants
Earth's orbit
All Life
Ice composition
Answer:
All life
Explanation:
Just trust me. I am too tired to explain this right now.
How do paleontologist learn about evolution ?
Paleontologists study fossils to learn about evolution by analyzing their structure, age, and distribution. Fossil records help determine relationships between species and the influence of events like mass extinctions. Various dating techniques are used to determine the age of fossils and the sequence of evolutionary changes.
Explanation:**Paleontologists** study fossils to learn about evolution. They analyze the structure, age, and distribution of fossils to understand how species have changed over time. By examining fossilized bones, teeth, and other preserved remains, paleontologists can trace the evolutionary history of different organisms.
For example, the fossil record shows a progression of horse evolution from small, multi-toed ancestors to the larger, single-toed horses we see today. Patterns in the fossil record also help paleontologists determine the relationships between different animal groups, and how major events like mass extinctions have influenced evolutionary pathways.
Furthermore, paleontologists use various dating techniques, such as radiometric dating and relative dating, to determine the age of fossils and the sequence of evolutionary changes. By combining different lines of evidence, including fossil records, genetics, and anatomical comparisons, paleontologists can gain a comprehensive understanding of how evolution has occurred.
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14. Which immune cells circulate in the body, providing immunity by producing antibodies?
A. Antigens
B. T-cells
C. Lymph Nodes
D. B-cell
The types of immune cells that circulate in the body and provide immunity by producing antibodies are known as B cells. Thus, the correct option is D.
What is Antibody?An Antibody may be defined as a type of protein that is synthesized by the plasma cells of B lymphocytes in response to specific antigens. It is a Y-shaped molecule with diverse forms.
B lymphocyte is one of the main types of lymphocytes that are classified under white blood cells which are the essential part of an immune system. B cells are further classified into plasma cells and memory cells. Plasma cells are responsible for the formation of antibodies that provides adaptive immunity.
Therefore, the types of immune cells that circulate in the body and provide immunity by producing antibodies are known as B cells. Thus, the correct option is D.
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The diagram illustrates the water cycle. Which process occurs at location
Answer:
Explanation:which location and also send the diagram, but there some processes like evaporation, condensation etc.
Answer:
Precipitation
Explanation:
A gene editing technology called CRISPR-Cas9 uses cellular machine to change the cells genetic material. How might this technology be used in treating diseases like cancer?
Answer:
Explanation:
Lets start with an explanation of cancer. Cancer is the uncontrollable division of cells. It is a genetic desease that is caused by changes in the genes that control cell division.
CRISPR can be used to combat these changes and change these cancers to be benign.
Answer:
CRISPR-Cas9, CRISPR (clustered regularly interspaced short palindromic repeats) and Cas 9 (CRISPR-associated protein 9). CRISPR are the DNA sequences present in the genome of bacteria and archaea. Cas 9 is a caspase enzyme that is used to cleave the CRISPR sequence.
CRISPR-Cas9 is a genetic technique that can be used to edit the genetic sequence of organism. This latest technique can be used to treat the cancerous cells. The genetic constituent of cancerous cells can be modified by this technique and used to treat the cancer diseases. The new drugs target can be discovered by using CRISPR-Cas9 technique.
Females of one fish species use an appendage with a glowing tip to lure prey. Bacteria living in the appendage produces this glow. The appendage provides the bacteria with resources and shelter. Which term describes the relationship between these fish in the bacteria? A. Predation B. Parasitism C. Mutualism D. Commensalism
Answer:
D) Commensalism
Explanation:
The bacteria benefits from this while the fish are neither harmed nor gain benefit
These are two metamorphic rocks. Which statement about the rocks is accurate? The rock on the right is foliated. The rock on the left formed from granite. The rock on the left is formed from cooled magma. The rock on the right has randomly arranged grains.
Answer:
The rock on the right is foliated.
Explanation:
From the look, we can easily name the two rocks. These rocks are common metamorphic rocks. The rock on the right is a slate while the one on the left is quartzite.
From close observation, the slate is foliated and has a uniquely layered pattern. Foliation is a leaf-like appearance of metamorphic rocks and it is a result of metamorphic changes in a rock.
The protolith of quartzite is mostly sandstones which is a sedimentary rock.
The protolith of slate is also a sedimentary rock which are fined grained such as mudstone.
Answer:
answer (A)
Explanation:
how does mitochondria and lysosomes and nucleus and golgi boby work together to provide nutrition and energy for the cell ?
Answer:
Ribosomes, the endoplasmic reticulum and the Golgi apparatus are related to each other through their involvement in protein synthesis and transport. ... The primary role of the Golgi apparatus is to modify the proteins and encase them into vesicles. From here they are transported to the various parts of the cell.
Explanation:
Which are units used to express volume? (high school btw not middle school)
2. Scientists often work together with other scientists. If you were working in a scientific laboratory, how could you help people in your laboratory work together in a way that is effective, and help make sure that people got fair credit for their work? What is needed for people to work together in an effective way? (10 points) APEX
Hi
I think a very important thing while working in a scientific laboratory is to have cooperation along with a sense of individual responsibility. There are many times when you are not expert in one scientific technique but your senior or fellow worker is because of his/her prior experience. At that point, the people of laboratory should cooperate with each other in giving some tips regarding performing a specific technique and getting the results with minimum time wastage. This does not mean that you take help from some one without giving them credit.
There should be a lab attendant in every lab who should be consulted for every problem so that he can assign some relevant worker to help you in the work. After you get the help, the attendant should confirm from both persons and keep a log about it which they should appreciate and give a fair credit about inquiries of higher authorities like supervisors.
Another important factor that is important for people is to have a sense of respect for each other. This is important to listen to others without just thinking about our own perspective and our own understanding. This also enables to understand a point from larger view and can help to bring a point in mind which we otherwise might skip.
in which step of the water cycle does most of earth’s water enter the atmosphere?
Answer:
evaporation
Explanation:
Answer:
Evaporation
Explanation:
Because the Earth's surface is made up of mostly water that evaporates constantly.
In one type of dog, black spots (B) are dominant over brown spots (b) and long tails (L) are dominant over short tails (l). Use the dihybrid cross for parents with the genotypes BBLl and BbLl and determine the likelihood of offspring with the phenotype of brown spots and short tails.
BL Bl BL Bl
BL BBLL BBLl BBLL BBLl
Bl BBLl BBll BBLl BBll
bL BbLL BbLl BbLL BbLl
bl BbLl Bbll BbLl Bbll
0%
10%
20%
50%
Answer:
There is a 0% chance of getting the phenotype of brown spots and short tails.
Explanation:
Here is a Punnett square
BL Bl BL Bl
BL BBLL BBLl BBLL BBLL
Bl BBLl BBll BBLl BBll
bL BbLL BbLl BbLL BbLl
bl BbLl Bbll BbLl Bbll
Answer:
Option A, 0%
Explanation:
It is given that
a) black spots (B) are dominant over brown spots (b)
b) long tails (L) are dominant over short tails (l)
Thus, the offspring with genotype "bb" will be of brown color as b is a recessive trait.
Also, offspring with genotype "ll" will have short tail as short tail is a recessive trait.
Thus, in the given punnet square genotype representing brown color and short tail together are - zero
Thus, option A is correct.
Energy is converted from one form to another in cells. What role does ATP play in this process?
Cells use ATP to harvest energy from sunlight.
Cells convert energy stored in ATP into nutrients.
Cells convert energy stored in ATP into kinetic energy.
Cells use ATP to produce nutrients such as glucose.
Answer:
Cells convert energy stored in ATP into kinetic energy. - third choice
Answer: Option C
Explanation:
The energy that is stored in ATP can be used to derive the various processes of the body.
The third bond in the ATP is loosely bonded with the molecules which is broken down to allow more stronger bonds to form and provide energy for the cellular processes.
Through the process of cellular respiration the bonds are broken releasing the potential energy of the molecules in the form of kinetic energy that is used by the cells to do work.
Genetic drift in a population affects the gene pool in which of the following ways?
-decrease in genetic variation
-increase in genetic variation
-increased mutations
-decreased gene flow
?
O
O
O
O
() " ."
:
:
what are the physiological reactions to stress in the alarm stage
Answer:
Physiological reactions to stress in the alarm stage include: increased heart rate and blood pressure, dilated pupils, rapid and shallow breath, and increased cortisol levels.
Explanation:
Hans Seyle, a medical doctor proposed a model called the General Adaptation Syndrome (GAS) to explain the effects and stages of coping with the stress. The GAS model has three stages, known as:
1. Alarm stage
2. Resistance stage
3. Exhaustion stage
The alarm stage is the first stage of responding to stress. During this stage, the fight-or-flight response is activated when an individual is experiencing stress. This stage involves the following physiological reactions:
1. Increased heart rate
2. Increased blood pressure
3. Dilated pupils
4. Rapid and shallow breath
5. Increased cortisol levels
Why do marine scientists need to understand longitude and latitude?
So they know where they're going
This simulation shows only the changes in energy that cause the motion of the skateboarder what energy transformations are going on with in the skateboarders body during this process. Please help ASAP
Answer:
Plato Answer
Explanation:
Some of the skateboarder’s stored chemical energy is being used to fuel muscle movement. This movement would also involve a release of thermal energy by the skateboarder.
Answer:
Potential energy will transform into kinetic energy. Potential energy will become kinetic energy and both energies can release thermal energy.
Explanation:
Let' suppose a physics simulation similar to the attached file.
We have a skateboarder moving on the surface.
The skateboarder varies his position. The highest point of the trajectory will have the highest potential energy and the lowest kinetic energy.The lowest point of the trajectory will have the lowest potential energy, all the potential energy will become kinetic energy. So, the lowest point of the trajectory will have the highest kinetic energy value.
As a consequence of friction force, part of both energies could convert in thermal energy.
Finally, we can conclude that Potential energy will transform into kinetic energy. Potential energy will become kinetic energy and both energies can release thermal energy.
In order for a theory to be considered valid it must be: observed at least one time recorded repeatable inferred from personal interpretation