Which of the following statements regarding selenium/selenoproteins is incorrect?
a. They are proven protection against colon cancer.
b. The amount of selenium in foods depends upon the soil where the plants were grown and animals grazed.
c. Selenium functions as an antioxidant.
d. Selenium plays an important role in the regulation of thyroid hormones.
Answer:
The correct answer is: A. They are proven protection against colon cancer.
Explanation:
Selenium is a mineral that can be incorporated into our bodies in small amounts when we consume certain foods, such as whole grain and dairy products. The amount of selenium in these products depends on the soil where the plants and animals were.
Selenium plays an important role as an antioxidant, which can lower the risk of developing several types of cancer. However, this doesn't mean that its consumption can prevent colon cancer, and the studies that had been done to prove its effectivity in these regards have been inconclusive.
Besides functioning as an antioxidant, selenium also is very important for the regulation of the thyroid hormones, which play an important part in metabolism.
The protein that contains selenocysteine amino acid remnants is called selenoproteins. They are found in the endoplasmic reticulum of the cells.
The incorrect statement is:
Option a. They are proven protection against colon cancer.
The statement can be explained as:
Selenium is a mineral that gets incorporated into our body through foods, dairy and whole grains. The amount of selenium depends on its amount and presence in the soil.Selenoproteins are good antioxidants that can lower the risks of cancers. But its consumption does not provide complete protection against cancers.It also regulates the thyroid hormone and plays a vital role in the regulation of metabolism.Thus, they have not proven medication for colon cancer.
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2 Paragraph summery on how Anna Garcia died
Answer:
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Use the word bank below to complete the passage below describing mitosis and meiosis. All words will be used at least once and most words will be used more than once.A) diploidB) mitosisC) meiosisD) sister chromatidsE) haploidF) homologous chromosomes1) A male giant panda has 42 chromosomes in its skin cells. This represents the _________ chromosome number. As the animal's old skin cells die and slough off, cells nearby divide through _________ to produce more skin cells. 2) Germ cells within the animal's testicles undergo _________ to replicate themselves and _________ to produce sperm. 3) The cells produced by mitosis in this panda have a _________ chromosome number and are produced after _________ are pulled apart into separate daughter cells.4) The cells produced by meiosis I in this panda have a _________ chromosome number and are produced after _________ have been pulled apart into separate daughter cells. 5) The cells produced by meiosis II in this animal have a _________ chromosome number and are produced after _________ have been pulled apart into separate daughter cells.
Answer:
1. diploid ,Mitosis
2. mitosis, meiosis
3. diploid, sister chromatids
4. haploid, homologous chromosome
5. haploid, sister chromatids
Explanation:
1. The Giant Panda has 42 chromosomes but these chromosomes exist in the form of homologous pairs therefore the Panda are diploid organisms. The somatic cells of the Panda undergo mitosis like skin cells.
2. The Germ cells are present in the testicles of the Panda which makes an exact copy of themselves by mitosis but these germ cells undergo meiosis to produce sperms.
3. The Mitotic division forms two daughter cells with the same genetic material because the sister chromatids of homologous chromosomes move to the opposite pole.
4. The meiosis I am also known as reductional division as the homologous chromosome separate and move to opposite poles during meiosis I and the ploidy changes from diploid to haploid.
5. During meiosis II, the sister chromatids of a chromosome separate and move to the opposite poles as a result of this the haploid cells are formed.
Determine whether each activity impacts land resources in a positive or negative way. Drag each term to the correct
category.
desertification
Positive Impacts
Negative impacts
reforestation
laws and regulation
habitat restoration
erosion
urbanization
deforestation
Answer:
desertification - negative impacts
Reforestation - positive impacts
laws and regulation - positive/negative impacts
habitat restoration - positive impacts
erosion - negative impacts
Urbanization - negative impacts
deforestation - negative impacts
Explanation:
Desertification is a process in which productive lands become a dry, unproductive one as a result of humans or natural activities such as drought, deforestation, etc. It impacts land resources negatively in that land generally becomes unproductive and unsupportive to other lives.
Reforestation is a process of artificially creating forest where one has been removed or where none existed before. It involves the planting of trees and leads to the creation of new land resources such as habitats, water sheds, etc.
Laws and regulations can impact land resources either positively or negatively depending on the type of laws. Laws that promote land conservation positively impact land resources while those that promote the wanton use of lands negative impact land resources.
Habitat restoration refers to activities geared towards restoring habitats of organisms that have been degraded by human or natural activities. Habitat restoration positively impacts land resources as natural processes are directly impacted positively.
Erosion involves the removal of topmost layer of soils by running water or wind. It negatively impacts land resources by rendering land unproductive impacting the protective nature of soil on other resources such as watershed, etc.
Urbanization refers to the process of actively developing an area vis a vis the construction of more buildings and other infrastructures to make a place more urban. Land resources are negatively impacted in the process as most often requires the conversion of lands to non-forested uses.
Deforestation is the removal of forest layers for non-forest uses. It negatively impacts land resources such as habitat removal, lower biological diversity, protection of water sheds etc.
Answer:
Here
Explanation:
Morgan crossed true breeding red eye (W+), Long leg (SL+) females with true breeding white eye (w), short leg (sl) males. F1 females from this cross were then backcrossed to true breeding white eye (w), short leg (sl) males.
From this cross the following flies were collected:
348 white eye (w), short leg (sl) flies
356 red eye (W+), Long Leg (SL+) flies
68 white eye (w), Long Leg (SL+) flies
55 red eye (W+), short leg (sl) flies
How far apart are the red eye and long leg genes on the X chromosome? (Display your answer in centimorgans, to 2 decimal places.
Answer:
The F1 parents is : W+ SL+/ w sl
The genetic distance is calculated by the(recombinat/total) × 100 = {(68+55) /(68+55+348+356) }×100= (133/837) ×100= 15.89 cM.
Here recombinat are lower in number and parental are greater in number.
15. 89 is the right answer.
What is the water cycle?
A: the storing of water under on or above the earth’s surface
B: the removal of water under on or above the earth’s surface
C: the continuous movement of water under on or above the earth’s surface
D: the creating of water under on or above the earths surface
C. The continuous movement of water under, on, or above the earths surface.
Answer:
C
Explanation:
The water cycle is a cycle, meaning it happens over and over again. Water isn't stored, created, or removed, it is moved around and it goes through different processes. For example, some stages of the water cycle are evaporation, condensation, precipitation, infiltration and run off.
Therefore choice C: the continuous movement of water under on or above the earth’s surface, is correct.
What are the five main functions of nematodes in soil?
Answer:
Nematodes are the bacterial feeders, fungal-feeders, plant parasites, predators, and omnivores.
Explanation:
hope this helps :)
Answer:
Nematodes play an important role in nutrient cycling. In particular, they play a key role in the nitrogen cycle. Nematodes take in nitrogen and excrete it in a form that plants and bacteria can use.
Nematodes graze on bacteria, plants, and other soil organisms. In ecosystems, nematodes play a major role in regulating the populations of their prey organisms.
Nematodes carry fungi and bacteria in and on their bodies. As nematodes move through the ecosystem, they disperse the bacteria and fungi.
Nematodes are a part of food chains and food webs. They are an important food source in many ecosystems.
Nematodes impact the health of other organisms. Some help prevent, or suppress, disease by eating other disease-causing organisms. Other nematodes cause disease in plants and animals.
Explanation:
Got 100%
Insulin is a hormone that travels through the blood and helps regulate blood sugar levels. Which best describes how insulin travels in the blood?
in the plasma
in the platelets
attached to the white blood cells
attached to the red blood cells
Answer:
A:in the plasma
Explanation:
Insulin regulates blood sugar levels and it travels in the plasma. Therefore option A is correct.
What is insulin?Insulin is a hormone that is released by β-cells of the pancreas. It controls the amount of glucose in our bodies. It converts glucose into glycogen and then this glycogen is stored in the liver, and whenever the glucose level reduces in the blood, then this stored glycogen is converted into glucose. It also helps in breaking fat and protein for energy.
Insulin is a very important hormone for the regulation of glucose in the blood. A deficiency of insulin occurs when the immune system attacks islets and it causes diabetes, in this disease blood sugar level increases
.
Insulin flows in the blood through plasma. Therefore, option A is correct.
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75 POINTS!!! One reason male peacocks spread their tail feathers is to attract a mate. How does choosing a male with a bright, full tail increase a peahen’s chance of producing healthy peachicks?
Answer:
They have greater health conditions
Explanation:
if they are bright, they are healthy
Answer:
Typically, if a peacock has a bright tail with many feathers and eyespots, a female will choose him. These tail features indicate that the peacock may be healthier than other males and, therefore, produce healthier peachicks.
Explanation:
This is the sample response.
What is the term for a plant that produces a seed without a protective cover
Gymnosperms are a more primitive, smaller category of plants that generate "bare seeds" (seeds that are not protected by a fruit). On Earth, there are still more than a thousand different types of gymnosperms.
What are the feature of gymnosperm?Several shrub species are also found, and these are often medium to large trees. Gymnosperms, which include some of the tallest tree species, including the sequoia.
The leaves, stem, and roots are the three distinct parts of the plant's body. Similar to conifers, the leaves have a thick cuticle, needle-like shape, and depressed stomata. This characteristic reduces water loss from transpiration.
The taproot system is the type of root system seen in gymnosperms. In some plants, these roots have a relationship with fungus and produce mycorrhiza, e.g. Pinus. While in certain other species, such as the Cycas plant, the roots take the shape of specialized roots known as coralloid roots and are linked to cyanobacteria that fix nitrogen.
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Explain what is happening to air mass from the sea as it moves up the side of the mountain and down the other side.
Answer:
The orographic effect creates cooler air moving up the windward side of mountains and warmer air moving down the leeward side. Often, as the leeward air plunges down the slope, it warms quite dramatically and rapidly. Such rapid warming and drying of air can produce very high winds known as Chinook or Foehn winds.
Explanation:
Sorry if i got it wrong
when a cell grows and develops
O A. cytokinesis
B.
mitosis
c. interphase
Answer:
cytokinesis
Explanation:
Which contributes to the movement of air masses
Answer:
The Movement of Air Masses: transporting warm air northward and colder air southward. Counterclockwise winds associated with cyclones transport heat and moisture from lower to higher latitudes and play a significant role in the movement of air masses. A warm front marks the leading edge of this warm, moist air mass.
Explanation:
Identifying Plant Tissues
Identify the plant tissues in the three images.
A
B
C
Answer:
dermal
vascular
ground
Explanation:
edge 20
The inner protective layer of the viral genetic information
Answer:
the capsid is the inner protective layer of the viral genetic information(rna)
List 4 characteristics of plants
Photosynthesis,Cuticle, Cell Walls,Reproduction
The data show that both paper grocery bags and plastic grocery bags cause harm to the environment.
Answer:
Can you explain more
Explanation:
Michael's team is presenting a robot before their examiners. What do they need which is a definitive description of the final product or a
system?
While presenting the robot examiners are up with various questions like what purpose it will serve what features it must include, what
functions it must perform to be acceptable. Michael's team needs to specify the ________
of the robot to examiners.
Answer:
Applicability
Explanation:
The best way to present the importance of any research is to show its application and future scope. Here in this case too Michael needs to define the various fields and aspects of life where a robot can help and assists human being. He must also outline the future scope of development through which its application range could be increased to various other fields along with moving towards more complex application.
Answer:
specifications
Explanation:
The essence of engineering design lies in finding workable solutions for a given set of specifications and constraints. Specifications are definitive descriptions of the final product or system—what purpose it will serve, what features it must include, what functions it must perform to be acceptable, etc.
What are the 5 main sinks of carbon
Answer:
bio, pedosphere, litho, hydro, a t m o
Explanation:
sphere
Which of these is found within all cells?
Organ systems
Organs
Tissues
Molecules
Answer:
tissues
Explanation:
cells make tissues and tissues make organs
What happens to the radiation from the sun after it interacts with the atmosphere?
Answer:
Most of the solar radiation is absorbed by the atmosphere and much of what reaches the earth's surface is radiated back into the atmosphere to become heat energy.
Explanation: Nicki Minaj.
The codon, CAG, is being carried by a mRNA strand into the
cytoplasm. By using the Codon Chart, what amino acid will it code
for?
Offspring that are stronger or healthier than their parents are
said to have _____.
please fill in thw question correctly..
no spamming please
will mark u brainliest if ur answer is correct.
thanks to anyone who helps :))
Answer:
Diverse parental genes
Explanation:
Within a population of butterflies, the color brown (B) is dominant over the color white (b) and 32% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam (teehee), calculate the following:
1. The percentage of butterflies in the population that are homozygous dominant
2. The number of heterozygous butterflies if the population contained 4,216 individuals
Answer:
48% Heterozygous of the population, 12% Homozygous dominant size.
Explanation:
Given the characteristics of its population,
Brown (B) predominates over white (b) color.
Recessive phenotype frequency (Q)= 40%= 0.4
According to the Hardy-Weinberg principle, the frequency is given by P and Q for a population with the dominant and recessive trait, where P+Q=1 preserves the equilibrium of the population allele.
So then, P = 1-Q
P=1-0.4=0.6
Heterozygotic butterflies = 2PQ
So, 2PQ= 2x0.6x0.4=0.48
That is, 48 percent of people are heterozygous
Homozygous dominant individual frequency = 1-(40 + 48) = 12 i.e. 12%
Answer:
C. 0.48
Explanation:
Use the drop-down menus to complete the statements.
In the first step of meiosis I, .
In the second step, .
In the third step, .
In the final step of meiosis I,
Answer:
In the first step of meiosis I,
✔ DNA condenses to form chromosomes
In the second step,
✔ Each pair of chromosomes lines up in the center of the cell
In the third step,
✔ Pairs of chromosomes separate
In the final step of meiosis I,
✔ A nuclear membrane forms around chromosomes
Explanation:
the person above me is correct
An atom is defined as?
Answer:
the smallest particle of a chemical element that can exist.
The smallest and basic subunit of a matter is called as Atom.
What do you mean by atom ?Atoms are the smallest and basic units of matter which has three subatomic particles such as positively charged protons, neutral Neutrons form nucleus.
A negatively charged electron which surround the nucleus of the atom.
In nucleus equal number of protons and neutrons, atomic number is the number of protons and atomic mass is made of the sum of protons and neutrons.
The nucleus does not change during chemical reactions, only in nuclear reactions it will change.
Smaller electrons orbit the nucleus participate in chemical reactions .
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Arrange the inner layers of the Sun in order starting with the innermost layer.
Answer:
MRCORRECT has answered the question
Explanation:
i.Core:The center of the Sun where all the Sun's energy is produced.
ii.Radiative Zone:Tiles Energy produced by nuclear reactions in the core travels to this zone through radiation.
iii.Convection Zone:In this zone, hotter gases from the base travel to the top and cooler gases sink to the bottom due to the temperature difference.
iv.Photosphere:This zone is visible from Earth. Sequence ↓ ↓
If I put a plant under Greenlight it would be able to photosynthesize true or false
Answer:
false
Explanation:
chlorophyll does NOT absorb green or blue light strongly
Answer:
yes it's true, photosynthesis will occur
what is waste water treatment ?
which species is the banana most closely related to?
lemon
onion
radish
seaweed
Answer:
onion
Explanation:
"Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both monocots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics. "
Answer:
Onions are most closely related to a) banana. Onions are part of the Amaryllidaceae family and bananas are part of the Musaceae family. They are both mono cots, meaning the have one cotyledon, parallel leaf veins, and flower petals in multiples of three, among other distinctive characteristics.
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Please give as brainliest answer!!
Thanks!
Explanation:
