Can someone please help me with this question? I am confused and I do not understand. :(

A group of ten archaeologists discovers a series of fossilized footprints in eastern Africa and they are perplexed. They believe the footprints belonged to ancient hominins. They wish to ascertain the heights of the individuals. They come to you for advice. How would you advise them in designing an experiment to answer their question? Include in your answer the step by step experimental design and the results they might expect.

Answer:

Humans are unable to digest cellulose, because the appropriate enzymes to breakdown the beta acetal linkages are lacking.

Answer: Cellulose

Correct option is D

Explanation:

The molecular structure of cellulose is composed of linear polysaccharide units different from the starch. Thus the enzymes for starch digestion are present but for cellulose digestion, there is no enzyme present inside our body.

Therefore Man is unable to digest cellulose because the appropriate enzymes to breakdown the beta acetal linkages are lacking.

Answer:

Here are two examples of how homeostasis regulates different aspects of the body: Get homework help from firstgradeessays[at]gm ail. c om. Quality is a priority.

Body Temperature Regulation: The human body has a set temperature range (around 36-37 degrees Celsius or 98-99 degrees Fahrenheit) that needs to be maintained for optimal functioning. When the body temperature rises due to exercise or external heat, homeostatic mechanisms helps to cool the body. These mechanisms include sweating, which helps dissipate heat through evaporation. Dilation of blood vessels near the skin surface facilitates heat loss. Conversely, if body temperature drops, homeostatic responses like shivering and constriction of blood vessels occur to generate heat and conserve warmth.

Blood Glucose Regulation: Maintaining blood glucose levels within a narrow range is crucial for proper physiological functioning. After a meal, blood glucose levels increase, triggering the release of insulin from the pancreas. Insulin helps facilitate the uptake of glucose by cells, reducing blood glucose levels back to normal. On the other hand, when blood glucose levels drop (e.g., during fasting or exercise), the pancreas releases glucagon, which stimulates the liver to release stored glucose into the bloodstream. This process raises the blood glucose levels and restores homeostasis.

Explanation:

Answer:

That layer is called the a horizon, so the answer is A.

Explanation:

Experimental Insight 2.1 in the textbook describes data on the kernel color distribution of bicolor corn, collected by a genetics class like yours.

To test the hypothesis that the kernel color of bicolor corn is the result of the segregation of two alleles at a single genetic locus, the class counted 12,356 kernels and found that 9304 were yellow and 3052 were white.

This result would suggest that the bicolor corn is the result of two alleles at a single locus, as the ratio of yellow to white kernels is roughly 3:1, which is the expected ratio for a two-allele genetic system. However, to confirm this hypothesis, more data and statistical analysis would be needed.

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The scientific name of this species of Wolf spider is Lycosidae.

Wolf spiders vary from approximately half of an inch to 2 inches in length, are furry, and are normally brown to gray in color with diverse markings or strains. Wolf spider mothers deliver their large egg sacs around with them. while the young spiderlings hatch they climb onto their mom's back and journey around till partially grown.

Wolf spiders have figured out a way to live just about anywhere. at the same time as some species are located on cold, rocky mountaintops, while others stay in volcanic lava tubes. From deserts to rainforests, grasslands to suburban lawns, wolf spiders thrive; there may be probably one close by.

Ecosystems - Predators of Wolf Spiders consist of birds, reptiles, and rodents. Food web - Spiders are carnivores that devour different animals. They feed on some forms of number-one consumers. So, spiders are secondary purchasers.

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Answer:

C

Explanation:

took the test

Answer:

Disinfection needs to happen after any spill as well as after every work shift. The CDC recommends the use of a ten percent bleach solution as the standard for disinfection, but other products might be preferred for your lab.

Explanation:

The statement that best describes an advantage of using stem cells from a yew tree to produce paclitaxel is option A:Stem cells can be grown and reproduced in a laboratory.

Old yew trees' drooping limbs can take root and grow new trunks where they contact the ground. As a result, in Celtic culture, the yew came to represent both death and resurrection. The toxicity of the tree's needles in particular will also have been known to the Celts.

Note that Yew trees were seen as both omens of doom and symbols of immortality. Yew branches were traditionally carried on Palm Sunday and during funerals for many centuries and can be grown in the laboratory.

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Q.

The yew tree is a rare and slow-growing tree. Paclitaxel is an anticancer compound obtained from the bark of the yew tree. The extraction of the compound is expensive and damages the yew tree. Scientists have isolated and grown stem cells from a yew tree that could be used to produce paclitaxel.

Which statement describes an advantage of using stem cells from a yew tree to produce paclitaxel?

answer choices

Stem cells can be grown and reproduced in a laboratory

Stem cells can differentiate into cells of a different species.

Stem cells from plants are more useful in producing animal protein.

Stem cells from plants are less likely to cause unfavorable mutations than stem cells from animals.

Answer:

The Factor that most affects drug absorption s the Lipid solubility of the drug            

Explanation:  

For a drug to accomplish its pharmacological function, it needs to suffer absorption mechanisms.

Most drugs, those that do not act locally, need to be correctly concentrated in their action sites or target sites. The first step is absorption.

This involves the obligated pass through the semipermeable plasmatic membrane to finally get in the blood. In blood, the drug moves, distributes, metabolizes, and the unaltered molecules are excreted.

There are different mechanisms in which drugs can cross the membrane that depends on the drug type. Depending on the effects of these mechanisms, there will be a more or less concentrated drug at the target sites.

It is hard to regain a trait that has been lost because the genetic changes required to evolve a new trait or to regain a lost trait are often complex and can involve multiple genes and regulatory elements. Furthermore, evolution is a slow, laborious process that requires beneficial mutations to accumulate over many generations.

When a trait disappears, the genetic material encoding it may also disappear or become inactive, making it more challenging for the trait to reappear in subsequent generations. For example, restoring a species' ability to manufacture a specific enzyme required for a particular metabolic pathway can be challenging if the genetic changes required to do so are complex.

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Out of the four options listed, "buying a new car" is not an example of a service.

A service is a type of economic activity that involves the provision of intangible value to customers.Getting a massage, staying at a hotel, and taking a flight to New York are all examples of services. Getting a massage involves a service provider performing a physical manipulation on a customer, with the goal of promoting relaxation and well-being.

Staying at a hotel involves a customer paying for a temporary place to sleep and access to other amenities, such as food and leisure facilities. Taking a flight to New York involves a customer paying for transportation from one location to another.In conclusion, "buying a new car" is not an example of a service. Services are intangible economic activities that involve the provision of value to customers. Examples of services include getting a massage, staying at a hotel, and taking a flight to New York.

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To check if the point (5, 6) is the solution to the linear system of equations, you would substitute 5 in for x and 6 in for y in both of the equations to see if both equations are true. (Option D)

A system of linear equations (or linear system) is a collection of one or more linear equations involving the same variables in mathematics.

A linear system is a mathematical model of a system that is based on the usage of a linear operator in systems theory. Linear systems often have considerably simpler characteristics and properties than nonlinear systems.

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Answer:

sperm cell

Explanation:

because sperm cells are reproductive cells and so undergoes meiosis to form diploid cell

Answer:

Consult a doctor, nurse or a qualified health professional.

Explanation:

Doctors and Nurses are professionals in this field. From the options listed they are the only people who could give you valid information on your health. Getting your information from other sources could lead you to being misinformed, and that could have detrimental effects.

Answer:

Low levels of dopamine are related with symptoms of Parkinson's disease.

Answer:

A. a system for acquiring knowledge based on experimentation

Explanation:

Answer:

A. A system for acquiring knowledge based on experimentation

Explanation:

Answer:

Explanation:

Hydrogen nitrate I believe

The chemical formula for the substance nitric acid is HNO₃. Based on the information from this chemical formula, this means that one single molecule of this substance nitric acid contains a covalent bond of one atom of hydrogen, one atom of nitrogen, and three atoms of oxygen. I hope I helped answer your question. Have a great day! Take care! :) :) :) :)

Answer: The conditions of dirt, air, water, temperature, sunlight makes materials decay more faster

Explanation: Which causes to rot, mold or dry up

Amino acids are joined together by peptide bonds, in which the amino or NH2 of one amino acid bonds to the carboxyl (acid) or COOH group of another amino acid to form Proteins.

Amino acids are monomers that combine to form polymers called proteins.

Answer:

Some of the components that make up lipid envelopes on viruses include:

The composition of viral envelopes can vary depending on the type of virus. These components determine  the virus ability to infect host cells, evade the immune system, and replicate within the host.

Explanation:

Answer:

Pacific Ocean

The Galapagos Islands are located 1000 km off Ecuador's coast in the Pacific Ocean. The Galapagos archipelago consists of 13 major islands, 6 smaller islands and many islets.

Explanation:

The correct trace nutrient pathway in a Great Lakes forest that is invaded with non-native earthworms is leaf litter → earthworm → soil → trees. The correct option is B.

When there is an oversupply of food, nutrient-sensing pathways activate anabolism and storage, and when there is a shortage of food, homeostatic mechanisms including the mobilization of internal stores via mechanisms like autophagy are triggered.

Human metabolic illnesses frequently exhibit altered nutrient-sensing mechanisms.

Therefore, the correct option is B, leaf litter → earthworm → soil → trees.

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Answer:C

Explanation:

makes sense

Answer:

A

Explanation:

Answer:

The hippopotamus is most similar to the whale in casein protein production.

Answer:

DEC = CC + CF

Explanation:

It should be understood that, the concentration profile across the endothelial cells will base on the diffusion rate of the filtrate .

Answer:

wave A has a higher frequency then wave b

Explanation:

test

The true statement regarding the two sounds is  Wave A has a lower frequency than wave B. Thus, option "B" is correct.

The pitch of a sound is the sensation of the sound frequency.

A high pitch sound corresponds to a high-frequency sound wave and a low pitch sound corresponds to low frequency.

Sound of the same amplitude has the same loudness.

Thus, option "B" is correct.

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Answer: The definition of photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll

Explanation: It's because it's science.

Answer: Photosynthesis is a process by which phototrophs convert the energy in light to chemical energy, which is later used to fuel cellular activities.

Explanation: My favorite subject is science and I learned about photosynthesis last year.

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Answer:

The answer would be D. The fossil record

Explanation:

The fossil record is for proving evolution, not a factor that causes evolution.