The discovery of BRCA1 and BRCA2
genes led to a new understanding of how genetic mutations increase the risk of
cancer is. Mutations in the genes BRCA1 (breast
cancer gene 1)
and BRCA2 (breast cancer gene 2) increase a woman's risk of developing breast
or ovarian cancer. BRCA mutations account for about 5% of all breast
cancers and 4%–11% of all ovarian cancers.
The correct answer between all
the choices given is the second choice or letter B.
Does anyone know how to do question 2?
Ok so basically the big Y is yellow and the little y is blue. Keep in mind Yellow is dominant to Blue.
YY-Yellow
Yy-Yellow
yy-Blue
The big S is square and the small s is round. Square is dominant to round.
SS-Square
Ss-Square
ss-Round
Which of the following would produce a silent mutation?
A. The deletion of a single base.
B. The replacement of a single base, producing a stop codon.
C. The replacement of a single base, producing the same amino acid.
D. The insertion of a single base.
Answer:
C
Explanation:
A silent mutation is a mutation that does not have an observable change or effect on the organism bearing it. If a base in a DNA sequence changes but the new codon codes for the same amino acid (remember amino acids translation have redundancies), then they will be no observable effect. The most lethal kind of mutation is deletion and insertion because they result in a frameshift mutation.
Answer:
C
Explanation:
a silent mutation is not one that can be seen or abserved in the phenotype
An object has a kinetic energy of 32 J and a mass of 36 kg, how fast is the object moving?
Answer:
1,34 m/s
Explanation:
KE= 1/2 mv^2
massa = 3,6 × 10 ^4/ 10 ^3 kg = 36 kg
KE = 1/2 × 36 × v^2
32 × 2/36 = v^2
64/36 = V^2
√64/36 = V
V= 8/6
V = 1,34 m/s
based on the phylolgenetic chart, which three statements are true about the relationship between the organisms
Bacteria, Archaea, and Eukarya come from one point in a rooted phylolgenetic tree chart.
What are the components of DNA
DNA has three types of chemical component: phosphate, a sugar called deoxyribose, and four nitrogenous bases—adenine, guanine, cytosine, and thymine. Two of the bases, adenine and guanine, have a double-ring structure characteristic of a type of chemical called a purine.
Answer:
DNA has three types of components:
Deoxyribose sugar.Nitrogenous bases.Phosphate group.Explanation:
DNA is composed up of molecule nucleotide and each nucleotide comprises of a Deoxyribose sugar, a phosphate group, and nitrogenous bases.
Deoxyribose sugar.is a five carbon or a pentose sugar.
phosphate group:help in the formation of DNA backbone.
nitrogenous bases: is used in the formation of nucleotides. The nitrogen bases are purines( adenine, guanine), pyrimidines (cytosine, and thymine).
Which part of the endoplasmic reticulum is involved intransport?
The endoplasmic reticulum serves many general functions, including the folding of protein molecules in sacs called cisternae and the transport of synthesized proteins in vesicles to the Golgi apparatus. I hope this helps (:
Plants add water to the atmosphere through
Plants add water to the atmosphere through transpiration. Transpiration is the process of water moving through plants and evaporating, becoming water vapor. This water vapor is released into the atmosphere.
Answer:
Transpiration
Explanation:
Vegetal transpiration corresponds to the process of water dispensing in the form of steam, given to the environment through a unidirectional sense, that is, of the water rising from the root region towards the leaves, and from these to the atmosphere. Therefore, we can conclude that it is through plant transpiration that plants add water to the atmosphere.
Which hold water until it is needed?
A)dams
B)reservoirs
C)aqueducts
D)valleys
SCIENCE
B, reservoirs.
Dams are used to conserve water and to convert it into hydroelectric energy.
Aqueducts are used to move water from one source to another, think sort of like irrigation.
Valleys are plains of grass, has nothing to do with water.
Reservoirs however, are used to reserve water, Reserveoirs.
Reservoirs is referred to as the structure which holds water until it is needed and is denoted as option B.
What is a Reservoir?This is usually created using a dam and it is used to store water for future purposes.
This helps to prevent wastage and ensure that the water is easily retrieved when needed.
Read more about Reservoir here https://brainly.com/question/277454
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what is overproduction?
a-individuals produce offspring with too many traits.
b-some individuals produce more offspring than others.
c-more offspring are produced than can survive.
d-some offspring mate with too many partners.
C- More offspring are produced than can survive. There isn’t enough resources out there to support them all.
It’s C for this one!
Which of the following are products in the process of cellular respiration?
Most of the steps of cellular respiration take place in the mitochondria. Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Hope this helps :)
Answer: glucose and oxygen
Explanation: because it is right !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What kind of factors are light temperature and soil composition
I think it is abiotic if it is not i am sorry
Answer:
The correct answer is abiotic factors.
Explanation:
A non-living constituent in the environment is known as an abiotic factor. This can be either a physical presence or chemical. The abiotic factors come in three fundamental categories. These are edaphic, climatic, and social. The edaphic factors comprise conditions of the soil, the climatic factor comprises sunlight, humidity, and other factors taking part in the climate. The social factors comprises the water resources in the region, and how the land is used. The five general abiotic factors are chemical elements, atmosphere, temperature/sunlight, water, and wind.
Touching a hot stove stimulates which type of sensory receptor?
a. pain receptor
b. mechanoreceptor
c. chemoreceptor
d. photoreceptor
it would be thermoreceptor but i think it is A) pain receptor
The correct answer from the above options is A) Pain receptor .
How does Pain receptor work ?
When a high temperature is sensed by the skin , a reflexive withdrawal is initiated by the arm muscles .
sensory neurones are activated by a stimulus , which is sent to the central nervous system CNS and a motor response is sent out to the skeletal muscles by efferent fibres that control the movements . The pain receptor is also known as nociceptor which has an ability to detect extreme heat , cold or any harmful chemicals .Where do pain receptors are located ?
These are located to the most exposed parts of the body which has susceptibility to any injuries .
For example : Fingers and toes .They are located on the epidermis that is the most superficial part of the skin ( surface of the skin ) and the dermis which lies beneath epidermis and second layer of the skin which is deeper than epidermis .To learn more about sensory receptors :
https://brainly.com/question/25753221
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A collected gas has a pressure of 778mmHg and a temperature of 47.0C. What would be the new pressure at standard temperature
Answer:
= 664.10 mmHg
Explanation:
According to pressure law the pressure of a fixed mass of a gas is directly proportional to the absolute temperature.
Therefore;
P1/T1 = P2/V2
Standard temperature is equal to 0°C, which is 273.15 K.
In this case;
P1/T1= P2/T2
P1 = 778 mmHg
T1 = 47.0 + 273 K
= 320 K
P2 = ?
T2 = 0° C = 273.15 K
P2 =P1T2/T1
= (778 × 273.15)/320 K
= 664.10 mmHg
As the rate of cooling of igneous rocks increases, the size of the crystals that form
As the rate of cooling of igneous rocks increases, the size of the crystals that form decrease. Sense the size of the crystals will decrease, this would include that the rate of cooling of igneous rocks increases.
Answer:
The correct answer is "decreases".
Explanation:
As the rate of cooling of igneous rocks increases, the size of the crystals that form decreases. Volcanic or igneous rocks go trough a cooling process when they reach the Earth's surface, crystallizing and forming different crystal forms. The size of the crystals depend on the cooling rate, slow cooling allow the formation of large crystals, while fast cooling yields small crystals.
What do arthropods and segmented worms have in common?
Question 6 options:
They both have segmented bodies during some stage of their life.
They both have hard outer shells that are unmovable.
They both have bones and vertebrae.
They both lack any sense organs.
They both have segmented bodies during some stage of their life.
Explanation;Segmented body worm or Annelids belong to phylum Annelida which consist of coelomates with elongated, segmented body. Arthropoda refers to an animal phylum that consists of haemocoelomates with a segmented body, joint appendages, and chitinous exoskeleton.They differ in a number of features and characteristics, but are similar in that;
Both animals have similar types of larvae.Both Annelida and Arthropoda consist of bilateral symmetry.Both Annelida and Arthropoda consist of triploblastic animals with three germ layers. Both Annelida and Arthropoda have organ system level of organization. Both Annelida and Arthropoda consist of segmented body structures, etc.Answer:
They both have segmented bodies during some stage of their life
Explanation:
How do mutations drive evolution?
An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.
well a mutation in a animals DNA is evidence that it may be trying to adapt to its environment. or the mutation is caused be a disease or excessive amounts of radiation. but either way the mutation can be passed down to the next generation. And the mutation can continue to 'evolve' and create new possibility in what the animal can do.
Hope that this helps. Good luck!
what is the role of the liver A it makes all four digestive enzymes B it makes nephrons C It produces urine D it produces bile
D. the liver produces bile
Which hormones do endocrine glands release?
Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.
Which hormones do endocrine glands release?
Pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.
How are hormone levels regulated?
The hormonal regulation release involves a hormone binding to its receptor on an endocrine cell to regulate hormonal secretion.
How does the reproductive system work?
The male reproductive system consists of two major parts: the testes, where sperm are produced, and the penis. The major internal organs of the female reproductive system include the vagina and uterus and the ovaries, which produce the female's ova.
What structures make up the male and female reproductive systems?
the answer for this one is from the other question I answered before
The eye of a hurricane has the ____.
A. Highest Wind Speeds
B. Most intense rainfall
C. Highest air pressure
D. Warmest temperatures
The eye of a hurricane has the highest wind speeds.
Which of the following is a compound?
A. Cl2
B. H2O
C. He
D. H2
B is the compound because a compound is two or more different atoms that combine.
Give two examples of how you have used your autonomic nervous system today
What is the independent and dependent variable in this:
"Sandy heard that plants compete for space. She decided to test this idea. She bought a mixture of flower seeds and some potting soil. Into each of 4 plastic cups, she put the same amount of soil. In the first cup she planted 2 seeds, in the second cup she planted 4 seeds, in the third cup 8 seeds, and in the fourth cup 16 seeds. After 25 days she checked to see how many plants had grown and their height."
Answer:
The correct answer will be- the number of seeds in cups.
Explanation:
The scientific experiments involve the parameters which directly controls and help determine the hypothesis. These parameters are known as the variables which could be changed or kept constant.
The variables which could be changed or manipulated by the researcher or can get a change on its own like time are known as the independent variables. The variables which depend on the independent variables and are to be studied are known as the dependent variable.
In the given question, sandy studied the growth pattern and height of the plant which are considered dependent variables but they changed the number of seeds in the cups and thus they will be considered as the independent variables.
Thus, the number of seeds in the experiment represents the independent variables.
Certain disorders, such as sickle cell anemia,
are linked to specific genes. Some scientists
would like to use gene therapy to cure such
disorders. Gene therapy involves replacing the
nonworking cells with cells that have been
genetically altered.
Which of these is a logical argument against gene therapy?
A
Changing one gene may lead to the formation of a new species.
B
Changing one gene may negatively affect other genes.
C
Drugs may already exist to cure these diseases, so there is no need for risky therapy.
D
Scientists may not be able to distinguish one gene from another.
what is the answer?
Certain disorders, such as sickle cell anemia, are linked to specific genes. Some scientists would like to use gene therapy to cure such disorders. Gene therapy involves replacing the nonworking cells with cells that have been genetically altered. Which of these is a logical argument against gene therapy?
Answer is option B. Changing one gene may negatively affect other genes.
Match each type of skeleton marking to its function
Answer:
Tubercle: allows tendons to attach to bone
Foramen: Allows blood vessels and nerves to travel through bone.
Fossa: Allows to bones to form a joint.
Explanation:
Tubercle is a small round prominence on the bone which helps in the attachment of tendons to the bones.
Foramen means aperture or hole, through which blood vessels and nerves can pass through. For example: Vertebral foramen. Vertebral foramen of all the vertebral bones together form the vertebral canal. Blood vessels pass through the vertebral foramen. Another example is foramen magnum in the occipital bone.
Fossa is small depression on the surface of bone where articulation can occur. Example: radial fossa- is a depression which articulated with head of radius when the forearm is raised. Olecranon fossa receives olecranon of ulna when forearm is extended.
How is mechanical energy calculated?
A.) the amount of kinetic energy multiplied by the number of moving parts
B.) the sum of potential energy and kinetic energy
C.) the sum of kinetic energy that is being used to do work
D.) the difference between kinetic energy and potential energy
i believe the answer is b
Natural selection leads to , a process of change in a population over time.
im not sure if you have a question about this, but this is true
Answer:
1) evolution
2)variation,overpopulation,adaptation
Explanation:
did it ;))
How does an enzyme affect a chemical reaction ?
Hello, I'm Eric. I'll be trying my best to assist you on your question today.
Explanation:The lower the energy for a reaction is for a reaction, the faster the rate is. The Enzyme helps speed it up even more to get a better reaction in a chemical etc.
Name the substrate the main product and the by-products of fermentation
The two main types of fermentation are alcoholic fermentation and lactate fermentation (there are other types). Sugars are the most common substrate of fermentation, and typical examples of fermentation products are ethanol, lactic acid, carbon dioxide, and hydrogen gas (H2).
Answer & explanation:
The two most important types of fermentation are latic fermentation and alcoholic fermentation.
The lactic fermentation has pyruvic acid as its substrate, this reaction has as its end product the energy in the form of ATP and its byproduct is lactic acid.
In alcoholic fermentation, yeast and some bacteria ferment sugars(substrate), producing at the end of the fermentation reaction energy (ATP) as a final product, and as byproducts carbon dioxide and ethanol.
Which trend do the data in the maps support ??
i think that the land is warmer
Answer: In the given maps, there shows the temperature anomalies in both land as well as sea surface. In the sea surface, the temperature anomaly ranges from -5°C to 5°C which is comparatively lesser than the land temperature i.e -12°C to 12°C.
Thus from the provided data in the map, we can conclude that the average temperature in the land surface is more than the sea surface because the sea surface has the capacity to reflect back heat to the atmosphere but land surface cannot reflect much of it, thereby becomes more warmer as it absorbs most of the incoming solar radiations.
This is a coral reef ecosystem. Many biotic and abiotic factors affect the health of this ecosystem. Which set correctly pairs a biotic factor and an abiotic factor?
First, we have to know the definition of the following vocabulary terms:
Abiotic = non-living
Biotic = living
Then, it's just a matter of seeing which answer choice has both a living organism and a non-living part of the ecosystem.
Correct Answer:
Algae and sunlight
Algae is actually a living organism called a protist, which uses sunlight in a process called photosynthesis to create its own "energy" (just like plants).Sunlight is nonliving, but it is still an important part of the ecosystem especially for photosynthetic organisms like algae.