Answer:
Membrane proteins
The cell membrane is selectively permeable . It lets some substances pass through rapidly and some substances pass through more slowly, but prevents other substances passing through it at all.
Answer:
D
Membrane proteins
The cell membrane is selectively permeable. It lets some substances pass through rapidly and some substances pass through more slowly, but prevents other substances passing through it at all.
Explanation:
What type of inheritance is shown by the genes that control sickle cell anemia? Explain your response.
Answer:
This condition is inherited in an autosomal recessive pattern , which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
Whoever helps me first will be mark as brainliest I promise please and thank you
Answer:
Answer is yes because most of the boxes are black
Help me please I need this soon
Answer:
In teliphase four daughters are formed
Answer of 20 is yes
MULTIPLE CHOICE
When does flowing water deposit the sediments it is carrying?
A
B
C
D
when the water current slows down
when the water current speeds up
only when the river changes direction
water does not deposit sediments, it only erodes sediments
Answer: A. when the water current slows down.
Explanation:
When a water current slows down, the force of the water is not strong enough to continue carrying the sediment, so it drops the sediment and deposit it. The slower the flow, the larger the particles that can be carried and eventually deposited. This is why river deltas, for example, are formed where a river enters a body of water and the flow slows down, allowing sediment to build up and create landforms.
Which of these is characteristic of the photic zone of a freshwater biome?
A)the presence of algae
B)relatively cool water
C)relatively stable water temperature
D)dead organic matter
E)low oxygen level
These is characteristic of the photic zone of a freshwater biome are the presence of algae as Algae are found in all types of water, including salt water, fresh water, and brackish water (a mixture of salt and fresh water). Algae that live in water are divided into two types: algae and phytoplankton.
Algae are large plants made up of many cells, while phytoplankton are small single-celled plants. Photosynthetic algae called phytoplankton live in the photozone. Zooplankton - small free-floating animals - feed on phytoplankton.
This is the first step in many aquatic food webs. Below the light zone is a dark non-light zone where photosynthesis is not possible. Freshwater benthic algae are found in the photozones of streams and rivers, lakes, and wetlands. A number of terms are used to distinguish groups of benthic organisms that live in various aquatic habitats.
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The expressed allele when no dominant allele is present in: _________
The expressed allele when no dominant allele is present in Recessive allele.
In general, Recessive alleles are expressed in certain condition when their is no dominant allele present. But when we talk about s.e.xually reproducing organisms, each of then will contain two alleles for every gene (one from each parent). This pair of alleles is also known as genotype that is responsible for determining the organism's phenotype.
Hence , Recessive alleles can only be expressed when both parents have recessive alleles for the given trait . on the other hand Dominant alleles are always expressed, regardless of what the other allele is present. If a person carries one dominant allele and one recessive for any trait, it is termed as a carrier.
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Please use the video to answer the questions
https://youtu.be/h2xufrHWG3E
Questions
1. What is hemophilia?
2. Is hemophilia dominant or recessive?
3. What are the chromosomes for a female?
4. What are the chromosomes for a male?
5. Which chromosome is hemophilia attached/carried on?
6. Are males or females more likely to have hemophilia?
7. What is a carrier?
8. Who can be a carrier of hemophilia?
9. Does a carrier have hemophilia?
10. What are the alleles for a carrier of hemophilia?
11. What are the alleles for a male with hemophilia?
12. What are the alleles for a male with normal blood clotting?
13. What are the alleles for a female with normal blood clotting?
14. what are the alleles for a female with hemophilia?
15. What treatments are there for hemophilia? (may need to look this one up)
1. A genetic condition known as hemophilia affects the blood's ability to clot, leading to frequent bleeding and easy bruising.
2. Recessive genetic disorder, hemophilia
3. For a female, the chromosome number is XX.
4. A male's chromosomes are XY.
5. The X chromosome is responsible for hemophilia.
6. Hemophilia is more common in men.
7. A person who does not have a genetic disorder but has a copy of the gene for it is known as a carrier.
8. Hemophilia can be carried by anyone.
9. A carrier doesn't have hemophilia, not at all.
10. XH and Xh are the alleles for a hemophilia carrier.
11. 12. A male with hemophilia carries the alleles XhY. For a male with normal blood clotting, the alleles are XHY.
13. For a female with normal blood clotting, the alleles are XX.
14. Females with hemophilia have the alleles XHXh.
15. Replacement therapy, which involves injecting the patient with the missing clotting factor, and gene therapy, which aims to correct the genetic defect that causes the disorder, are two types of treatments for hemophilia. Symptom management options include blood transfusions and physical therapy.
What is Hemophilia?Most of the time, hemophilia is a condition in which the blood does not clot properly. This can cause bleeding on its own or as a result of an injury or surgery. Numerous proteins known as clotting factors can assist in stopping bleeding.
Symptoms Excessive and unexplained bleeding from cuts, wounds, surgery, or dental work.
a lot of deep or large bruises.Strange bleeding following vaccinations.Joint discomfort, swelling, or tightness.Stool or urine stained with blood.bleeds to the nose with no known cause.Unidentified irritability in infants.Hemophilia comes in three forms:
Hemophilia: The most prevalent form of hemophilia is this one...Hematuria: When you don't have enough clotting factor 9 (factor IX), you get hemophilia B...Hemophilia: Deficiency of factor 11 (factor XI) is another name for hemophiliaTo know more about Hemophilia, visit:
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Gene mutations can be passed on to future generations and drive natural selection.
An organism can acquire new features as a result of gene changes that change transcriptional activity or protein function. If a characteristic is present, a genetic variation is more likely to be handed down .
Which mutations can be transmitted to subsequent generations?Almost every cell in an individual's body harbors these hereditary mutations during the course of their lifespan. Hereditary mutations include conditions including cystic fibrosis, sickle cell anemia, and hemophilia. Additional mutations might develop on their own over a person's lifespan. They are referred to as sporadic, spontaneous, or new mutations.
How do genes spread through natural selection?Genetic variations that are advantageous to an individual's survival are passed on through reproduction under natural selection.
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The complete question is -
Gene mutations can be passed on to future generations and drive natural selection of the evolution ?
Which specific cytoskeletal element is most susceptible?
All cytoskeletal elements have specific functions and structural characteristics that make them susceptible to different types of damage or disruption. However, the microtubules are considered the most susceptible cytoskeletal element. Microtubules are flexible, hollow tubes made up of a protein called tubulin. They are responsible for maintaining cell shape, cell division, and organelle movement. Because of their dynamic nature, microtubules are more susceptible to damage caused by environmental factors such as temperature changes, pH changes, and exposure to chemicals. Additionally, microtubules are also more susceptible to disruption caused by certain drugs and toxins that target tubulin, such as the chemotherapy drug taxol.
When a tall plant TT in pea is crossed with another tall plant TT the probability of obtaining a dwarf plant is?
When a tall plant (TT) in pea is crossed with another tall plant (TT), the probability of obtaining a dwarf plant is 0%.
Both parents are tall plant (TT) which are homozygous dominant for the trait of plant height. This means that they both have two copies of the allele that codes for tall plant height (T). Since the allele for tall plant height is dominant, it masks the presence of any allele for short plant height (t). In this cross, both parents only have the allele for tall plant height, so all of their offspring will also have the allele for tall plant height.
This can be represented in a Punnett square shown in the attached picture. As you can see in the Punnett square, all the offspring will be TT, and will be homozygous dominant for the trait of plant height and will exhibit the dominant trait (tall plant height).
Therefore, all the offspring will be tall and none of them will be dwarf.
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what is the role of cholesterol in a phospholipid bilayer
Answer:
Cholesterol plays a very significant role in the phospholipid bilayer.
Explanation:
It increases the order of the lipid packing, lowers the membrane permeability, and maintains membrane fluidity by forming liquid-ordered–phase lipid rafts
Explain What are index fossils and how are
they used to determine the
Absolute age of sendimentary rock?
Index fossils are the remains of species that were alive for just one brief time.A layer of rock containing an index fossil is not very old compared to another rock layer containing the same kind of index fossil.
What is the rock's exact age?The absolute age of the a rock is its age expressed in years.By calculating the concentration of specific radioactive materials in the rock, geologists may determine absolute ages.Small amounts from radioactive materials frequently end up in the formation of rocks.
What does it mean to be absolute?The numerical age of a layer containing rocks or fossils is its absolute age.Radiometric dating can be used to calculate absolute age.
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All of the following are true of antibodies EXCEPT
O they are recognized by phagocytes
O they destroy virus-infected cells
O they can block pathogens from infecting cells
O they bind to specific antigens
All of the following are true of antibodies EXCEPT that they destroy virus-infected cells because antibodies are bind to pathogens and antigens.
Antibodies remove foreign chemicals from the body by attaching to particular antigens. The variable section of the antibody binds to the pathogen when it gets into the body as a pathogen, such as a hazardous bacteria or virus, and ultimately causes a number of activities, such as the pathogen's elimination.
Viruses and intracellular bacteria attach to particular molecules on the surface of the target cell in order to enter the cell. This can be avoided as the pathogen is said to be neutralised by antibodies that bind to it. Antibodies' ability to neutralise bacterial toxins is crucial for preventing their entry into cells.
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state three hormones found in the digestive system
Answer:
endocrine, hormonal, testosterone
Explanation:
I had this question on an exam
Which term would be directly related to the science of ecology? Select all that apply.
Responses
endocrine system
integumentary system
population density
population growth
Answer: population desnsity
Explanation: Types, Importance And Examples Of Ecology What is Ecology? Ecology is a branch of science, including human science, population, community, ecosystem and biosphere. Ecology is the study of organisms, the environment and how the organisms interact with each other and their environment.
Answer:
population density
population growth
Explanation:
What knowledge and skills do nurses need?
Nursing is a profession that requires a comprehensive set of knowledge and skills to provide safe and effective patient care.
Nurses are expected to possess a broad range of competencies in order to provide high-quality care and meet the needs of their patients. The knowledge and skills that nurses need are often divided into two categories: theoretical knowledge and practical skills.
Theoretical knowledge is a core component of nursing education and is essential for nurses to understand the fundamentals of the profession. This includes understanding anatomy and physiology, medical terminology, pharmacology, pathophysiology, and legal and ethical issues. A nurse must also have an understanding of how to use evidence-based practice in order to provide the best care for their patients. In addition, nurses must be knowledgeable about the different types of treatments and interventions available, as well as how to recognize and assess changes in patient condition.
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Pros and cons of filter feeding, raptorial feeding, diffusion feeding
Answer:
Filter-feeding organisms can be used for reducing the amount of pathogens in the water, and therefore the chances of disease in farming facilities.
Advantages and disadvantages of active filters
These filters are more responsible than passive filters.
No resonance issue.
It can eliminate any harmonics.
Used for voltage regulation.
Used for reactive power compensation.
It provides reliable operation.
It can be designed to provide some passband gain.
No loading problem.
The chief drawbacks to filter-feeding are: 1) food supply is thinly distributed, requiring much swimming effort to secure sufficient nourishment and, 2) food supply is subject to wide fluctuations in relative abundance, especially in temperate zones.
Buying organically grown foods supports sustainability.
a) True
b) False
Write a paragraph discussing how producers can use information on optimal growth ranges of plants in their crop selection and production practices. address water, light,temperature, PH, and nutrients in your discussion.
Abiotic resources such as water, light, temperature, PH, and nutrients affect the optimal growth ranges of plants and therefore they should be considered during breeding programs for crop selection and production.
What is the relative importance of abiotic resources in crop production?The abiotic resources are fundamental in any type of crop production and therefore different non-living factors which include water, light, temperature, PH, and nutrients must be taken into account in breeding programs.
Therefore, with this data, we can see that water, light, temperature, PH, and nutrients are factors that should be considered during the improvement of a crop.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
Organisms
Explanation:
Water, Minerals, and Air are the resources while Organisms are the ones that fight for those resources
How does cardiorespiratory endurance benefit physical activity?
Your physical fitness will be affected by your cardiorespiratory endurance: Climbing Tanzania's Mount Kilimanjaro requires cardiorespiratory stamina.
Maximum Aerobic Power VO2 max is another term for maximum aerobic power. Your body's capacity to utilize oxygen is referred to in this. The capacity of the heart, lungs, and muscles to function during moderate to vigorous physical activity is known as cardiorespiratory endurance. Regular exercise, particularly aerobic exercise, can enhance cardiorespiratory endurance.
Regular endurance training results in the physiological changes and long-term advantages listed below: - A healthy cardiorespiratory system can easily keep up with the body's need for oxygen, fuel, and waste elimination while at rest.
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Which of the following forms of homeostasis would not be affected by a severe burn involving both the epidermis and dermis
Answer:
loose connective tissue.
Explanation:
Which of the following forms of homeostasis would not be affected by a severe burn involving both the epidermis and dermis? loose connective tissue.
Beginning with the flow phase arrange the bichemical processes in the order in which they occur during the menstural cycle
Beginning with the flow phase, the biochemical processes in the order in which they occur during the menstrual cycle include the following below:
1. High progesterone levels maintain the endometrium lining of the uterus.
2. Endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release FSH and LH.
3. FSH and LH stimulates the follicles to develop and the oocyte to produce estrogen.
4. Rising estrogen levels suppress FSH production and development of other follicles.
5. A spike in LH causes follicle to rupture.
6. A breakdown of corpus luteum causes progesterone level to drop.
What is Menstrual cycle?This is referred to as the monthly series of changes a woman's body goes through in preparation for the possibility of pregnancy.
High progesterone levels maintain the endometrium lining of the uterus and undergoes several processes mentioned above till breakdown of corpus luteum causes progesterone level to drop.
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The question is:
Beginning with the flow phase arrange the biochemical processes in the order in which they occur during the menstural cycle
FSH and LH stimulate the follicles to develop and the oocyte to produce estrogen.
A breakdown of corpus luteum causes progesterone levels to drop.
A spike in LH causes the follicle to rupture.
The endometrial lining breaks down and low levels of estrogen stimulate the pituitary to release FSH and LH.
Rising estrogen levels suppress FSH production and development of other follicles.
High progesterone levels maintain the endometrial lining of the uterus.
Can muscle tightness cause pain?
After an injury or misuse, sensitive regions of tight muscle fibers can grow in your muscles. These sensitive locations are referred to as trigger points. A muscular trigger point can produce tension and discomfort throughout the muscle.
Doctors refer to this as myofascial pain syndrome when the pain persists and intensifies.
Muscle stiffness is defined by discomfort and difficulty moving, which may be accompanied by cramping, pain, or weakness. Muscle stiffness is most common in the morning and lasts for less than 30 minutes after waking up, or for a few days after engaging in new or more difficult activity.
One of the most prevalent causes of muscular discomfort is muscle rigidity, also known as muscle tension, rigor, or stiffness.
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what are the major causes of moving air masses in North America? Choose two that apply. A- Changing Humidity B- Low temperatures C.- jet stream D.- Prevailing westerlies
The major causes of moving air masses in North America are : C.- jet stream and D.- Prevailing westerlies. Cold air masses move towards the equator and warm air masses move towards the poles.
What are the types of air masses in North America?The air masses in and around North America include continental arctic , maritime polar, maritime tropical, continental tropical, and continental polar air masses. Air is not the same everywhere.
Air masses are large bodies of air that have similar temperature and humidity and these are moved around the atmosphere by prevailing winds that blow in one direction. At the boundaries between the air masses, weather fronts form.
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Water is cooler near the poles and warmer near the equator. Movement of cooler and warmer water from these regions moderates the global climate. Which of the following describes the movement of water between the poles and the equator?
Option C. ocean currents describe the movement of water between the poles and the equator.
What is the relative importance of ocean currents in the movement of water?The relative importance of ocean currents in the movement of water between the poles and the equator is based on the fact they (ocean currents) are continuous, predictable, and also directional depending on the natural features of the earth planet, which is determined by the attractive forces that shape this movement, i.e., gravity, as well as the presence of winds and water body density
Therefore, with this data, we can see that ocean currents are a fundamental issue associated with the movement of water bodies in the oceans and other types of water bodies on the earth planet, which occurs between the poles and the equator due to certain features of water such as gravity, winds, and density.
Complete question:
Water is cooler near the poles and warmer near the equator. Movement of cooler and warmer water from these regions moderates the global climate. Which of the following describes the movement of water between the poles and the equator?A. evaporation
B. tides
C. ocean currents
D. gravity
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During what stage does the g1 s and g2 phases happen?
G1 and G2 phases happen as interphase, for the preparation before the mitotic phase started.
Phases of the cell cycleThe cell cycle refers to the cycle of growth and development of cells by dividing. After the cell divides into two daughter cells, it can start the same process over again.
The stages of the cell cycle are divided into two major steps: interphase and mitotic phase. Interphase looks like the preparation before the next steps. It includes 3 phases :
G1 phase (cell growth) is the first phase of the interphase. In this phase, the cell grows larger and also copies the organelles of cells. S phase (DNA synthesis) is the phase when the cell copies its DNA to produce two sister chromatids and also duplicate the nucleosome. G2 phase (cell growth) is the phase for reorganizing cellular content before mitosis begins.From the above explanation, "inter" reflects that interphase occurs between the mitotic phase and the next step.
Thus, G1, S, and G2 phases take place in the interphase before mitotic phase.
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There were _____ people in 1960.
Answer: 3,034,949,748
Explanation: If u do some research on the web you could find the answer.
Is the following statement true or false?
All cells have the same DNA, but different types of cells express different sets of genes.
The leading cause of lung cancer risk is cigarette smoking. About 80% to 90% of lung cancer deaths in the US are attributed to smoking cigarettes.
Smoking cigars and pipes as well as other tobacco products raises the risk of developing lung cancer.
What are the two cancers brought on by a change in lifestyle?Diet - The usual foods you choose to eat can potentially increase your risk of getting certain cancers. A diet high in processed meats, such as ham, bacon, or salami, can raise your risk of stomach cancer, bowel cancer, and pancreatic cancer.
How may one's way of life be changed to treat lung cancer?You can manage the side effects of cancer and its treatment with the support of a healthy diet, exercise, and stress-relieving activities. In fact, according to Dr. Yarmus, some cancer treatments are more effective when you exercise more, eat healthier, and eliminate bad habits like smoking.
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how is our atmosphere different from the atmosphere on venus and mars
Answer:
Earth's atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours and other gases. This makes the existence of life possible on Earth. However, the atmospheres on Venus and Mars mainly consist of carbon dioxide.