Please help I’ll mark you as brainliest if correct

Answer:

A. Neither the subjects nor the researchers can bias the results.

Explanation:

As described, a double- blind study is one in which the researcher and his study does not know the person receiving the actual treatment.

Researchers can be bias in their studies as they seek to establish and fine tune results in the way the best favors them. A double-blind study helps to bridge this gap to prevent bias that might be introduced into an experimental set up or while interpreting results.

Answer:

A. The researchers might not bother providing the placebo

Explanation:

Answer:

The answer is (C) :P 211111111

Answer:

b

Explanation: if they could see an x-ray of the bone structure they could understand further how they are related

All of the world's plants, animals, and microorganisms are included in taxonomy, which is the science of naming, describing, and classifying species.

Taxonomists identify, describe, and classify species, particularly those that are novel to science, using morphological, behavioral, genetic, and biochemical observations.

Taxonomy recognizes and catalogs the elements of biological diversity, offering the fundamental information necessary for the management and application of the Convention on Biological Diversity.

Taxonomists have identified roughly 1.78 million species of animals, plants, and microorganisms throughout the past 250 years of study, but the true number of species is unknown and likely between 5 and 30 million.

Therefore, All of the world's plants, animals, and microorganisms are included in taxonomy, which is the science of naming, describing, and classifying species.

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Metabology focuses on organisms use different chemicals for energy and remove waste products.

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Answer:

Your answer would be:
C.) Shallow ocean


The shallow part of the ocean floor begins at the shoreline and gently slopes underwater to an average depth of about 430 feet. It is covered with thick layers of sediment.

Explanation:

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Answer:

26 million years ago

Explanation:

About 0.55 million or 550,000 years ago the earliest South Asian river dolphin evolved.

About 0.5 million years ago the South Asian dolphin evolved due to different environmental conditions. South Asian dolphin have very flexible necks due to no fusion of their neck vertebrae. They are using echolocation to navigate and search for prey.

Research indicates that  South Asian dolphin diverged from a common ancestor around 550,000 years ago that lives in the Indus and Ganges basins so we can conclude that the South Asian dolphin evolved around 0.55 years ago.

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Answer:

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.

Answer/Explanation:

In Cellular respiration, organisms use oxygen to break down down to food molecules in order to produce energy that is needed for body function.

Combustion, which is also known as burning, also involves the use of oxygen in the break down of chemical bonds to produce energy.

Both processes give off carbon dioxide in the process along with the energy they release.

Therefore, both processes seem very much alike.

Answer:

I hope this helps you

Explanation:

1)This number is abbreviated as 2n where n stands for the number of chromosomes. For humans, the diploid chromosome number equation is 2n = 46 because humans have two sets of 23 chromosomes (22 sets of two autosomal or non-sex chromosomes and one set of two sex chromosomes).

2)Under normal conditions, the haploid number is exactly half the total number of chromosomes present in the organism's somatic cells. For diploid organisms, the monoploid number and haploid number are equal; in humans, both are equal to 23.

The diploid number is 2n no. of chromosomes and thus it is diploid instead of haploid.

Chromosomes are thread-like systems placed in the nucleus of animal and plant cells. Each chromosome is made from protein and a single molecule of deoxyribonucleic acid (DNA).

Thus it is clear that the diploid and haploid number of the species depends on the number of chromosomes.

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Answer:

D

Explanation:

Protista,because it uses tiny hairs as a trapping device.

Answer:

Connective tissue adipose, cartilage, bone.

Epithelial epidermis, the outermost layer of the skin.

Muscle  skeletal, cardiac, and smooth.

Nervous neurons and neuroglia

Answer:

please give me brainlist and follow

Explanation:

Describe the similarities in chemiosmosis between oxidative phosphorylation in mitochondria and photophosphorylation in chloroplasts. Both ways create a proton gradient across a membrane. ... OXIDATIVE- The electrons come from organic molecules. Mitochondria transfer chemical energy from food molecules to ATP.

Answer:

The highlighted structure is a tract that connects the hypothalamus and epithalamus .

Explanation:

The given highlighted structure is a optic chisma or optic chiasma.

OPTIC CHISMA- The optic chiasm is an X-shaped structure created in the brain by the crossing of optic nerves. The brain and the eye are connected by the optic nerve. The optic chiasm is considered to be a pivotal point of evolution by biologists. The crossing and uncrossing optic nerve fibers that pass through the optic chiasm are thought to have evolved to help with binocular vision and eye-hand coordination.

Nerve fibers from half of each eye pass over to the opposite side of the brain at the optic chiasm. The fibers from the other half of the retina migrate to the same side of the brain as the fibers from the other half of the retina. Every half of the brain receives visual signals from both eyes' visual fields as a result of this junction.    

Hence , the correct answer is hypothalamus and epithalamus .

The given highlighted structure is attached here -

Answer:

i).number of generations that is possible in individual cultures of C. elegans is 42 .

ii)number of generations that is possible in individual cultures of  B elegans IS 8640.

b). When the Caenorhabditis elegans and bacillus  thuringiensis  have  controlled growth their are no immune response to each other hence they are not adapted  to each other for separate growth.  

c)The  relative change in B. thuringiensis virulence was greater than the relative change in C. elegans resistance because  B thuringiensis had more number of generation event 8640 after 150 days while C elegans had less number of reproductive event 42.  

Step-by-step explanation

explanation.

a)   i).number of generation for C elegans will be given by;

 growing period divided by generation time.

we have ;

generation time is 3.5 day

growing period is 150 day.

then number of generation of c will  be;

150/3.5=42 generation  

ii).number of generation for B thuringiensis is given by;

but we have;

generation time is 25 minutes

growing period is 150 days.

then substituting in the formulae we have ,

150 x24 x60/25=8640 generation.

we have used the relation ;

1 hour =60 minutes and 1 day = 24 hours  

b).When the Caenorhabditis elegans and bacillus  thuringiensis  have  controlled growth their are no immune response to each other hence they are not adapted  to each other for separate growth. when grown together they provide the host pathogen relationship protecting the growth  for each organism. B thuringiensis  secrets toxin to infect the host hence having much change while C elegans are protected from this chemical since the change is high.

c).The  relative change in B. thuringiensis virulence was greater than the relative change in C. elegans resistance because  B thuringiensis had more number of generation event 8640 after 150 days while C elegans had less number of reproductive event 42.  

B. thuringiensis have smaller genome size hence have more change .This change is caused when trying to infect C elegans  hence causing a more diverse change in B thuringiensis.

C elegans  genome are relatively high  since they have less number of reproductive event  hence being protected because they produce the immune response by growing together to show maximum changes when separately grown.

Answer:

answering for leia48 he/she said its "scalar and vector" in which it is correct

Explanation:

go to him/her page and give him/her a thank you and brainliest

Answer:

The correct answer would be - 50%.

Explanation:

Hemophilia is a sex-linked recessive disorder that takes place in males more than in females as females have two X chromosomes so if one is affected other still able to make clotting factors but in males, there are only one x chromosome.

If a hemophilic man XhY marries with a carrier women XHXh then the chances of their son for normal blooding would be :

Gametes:

Male: Xh and Y

Female: XH and Xh

Then cross:

             Xh                          Y

XH      XHXh                     XHY

    (carrier daughter)      (normal son)

Xh        XhXh                    XhY

 (hemophilic daughter)  (hemophilic son)

Thus, the chances of normal son is 50% among sons

Answer:

Gene expression is the process by which the information encoded in a gene is used to direct the assembly of a protein molecule

Answer:

hope it helps

Explanation:

As shown in the figure a cross between two heterozygous tall plants results in 25% h.0.m.0.z.y.gous tall, 50% heterozygous tall and 25% dwarf plants.

Answer:

Air dissolved in water contains approximately 35.6% oxygen compared to 21% in air

Answer:

C is best answer

Explanation:

Hope this helps!

The correct option is "C" which is no competition exists between the species.

Since an ecosystem is formed when the living factors in an area interact with each other and with other non-living factors that surround them.

An ecosystem is formed when the living factors in an area interact with each other and with other non-living factors that surround them.

An ecosystem can be as small as a drop of water and large as an ocean.

Thus, the option  "C" which is no competition exists between the species is correct.

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Answer:

Transcription is an essential step in using the information from genes in our DNA to make proteins. Proteins are the key molecules that give cells structure and keep them running. Blocking transcription with mushroom toxin causes liver failure and death, because no new RNAs—and thus, no new proteins—can be made.^2

2

Answer:

Municipal of sewage in water ​

Explanation:

The municipal sewage water ​has a large number of microbes present in it that leads to lower level of oxygen in water. The reduction of oxygen in water occurs due to decomposition of algae present in water by microbes. Algae is responsible for the production of oxygen from the process of photosynthesis. When they are removed from an environment then no more oxygen will be produced which leads to decrease of oxygen in water.

Answer:

Bony

Hope this helps!

Answer:

bony

Explanation:

i`ve come across this question before, i`m pretty sure this is right