Match the correct word with its definition.

Evolution is any modification or change in the organism's characteristics over many generations. The most recent evolution within Homo sapiens populations is about 50,000 years ago. This refers to evolutionary adaptation, sexual and natural selection, and genetic drift.

Humans are still undergoing evolution. Changes to adapt to environment is a genetic change and therefore considered as evolution. Blue eyes is considered as an evolutionary trait of humans recently. It came from a mutation from an ancestor 6,000-10,000 years ago. This just means that humans will continue to evolve because evolution is considered as a slow process that will take many generations.

Answer: Field Genetics

Explanation:

Answer:  The correct answer is Natural Biochemistry

Explanation:  This answer has been confirmed correct.

A lipid looks like a head with tails like jellyfish. Among the options given, it can be (A) since a lipid bilayer will look like beads stringed together as seen below.

The basic structure of a viruses is constituted by genetic material, which could be DNA or RNA, surrounded a protein structure called capsid. The genetic material, as in not viral life forms, carries the information necessary for the virus reproduction inside an infected cell.

Enveloped viruses: some viruses have a lipid coat with protein spikes (glucoproteins) to recognize possible hostage cells.

Coronaviruses have been shown to spread back along the nerve from the peripheral nerve endings, across the synapses, and thus enter the brain, in several small animal studies. This is facilitated by the presence of a pathway for endocytosis or exocytosis between neurons of the motor cortex, and another secretory vesicular pathway between neurons and satellite cells.

Fast axonal transport occurs by employing axonal microtubules, allowing the virus to reach the neuronal cell body by a retrograde version of this mechanism.

Possible olfactory route spread is signaled by the occurrence of isolated anosmia and ageusia. In such a case, the virus could cross the cribriform plate to enter the central nervous system (CNS) from the nose. However, newer unpublished research suggests that olfactory neurons lack ACE2, while cells in the olfactory epithelium do. This could mean that viral injury to the olfactory epithelium, and not to the olfactory neurons, is responsible for anosmia, but further studies will be required to confirm this.

The cytoplasm organelle represents this part of the cell.

The cytoplasm in prokaryotes, which are cells without nuclei, is the entirety of the plasma membrane. The water-based gel-like cytosol, which contains ions, small molecules, and macromolecules, is a key component of the cytoplasm in both prokaryotes and eukaryotes.

The cytoplasm is the name for the gelatinous liquid that makes up a cell's inside. It is composed of salts, water, and other chemical substances. Membranes separate the cytoplasm from some internal organelles, such as the nucleus and mitochondria.

The jelly-like material inside cells called cytosol supplies the fluid medium required for metabolic reactions. All animal cells, which are eukaryotic cells, also contain different cellular organelles.

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A mistake in DNA sequence is called missence mutation that results in an incorrect amino acid fused into a protein. Due to such changes which the ribosome will know will result in a peculiar amino acid codon. It will cause the protein to be deficient in its function.

Answer - Option A

Answer:

A

Explanation:

Option A correctly describes the relationship between a change in the sequence of a cell's DNA, the proteins produced, and the function of the body tissue. DNA carries the genetic information that determines the sequence of amino acids in proteins. When there is a change or mutation in the DNA sequence, it can alter the structure and function of the proteins produced by the cell. Since proteins play crucial roles in various cellular processes and functions, any change in their structure can have significant effects on the proper functioning of the body tissue.

Viruses are likely to get mutations due to the fast reproduction cycle, this can lead to different replication mutations. the rate of mutations induced by the DNA polymerase is 1/100,000, it is low, but due to the fast spread of the viruses, it could induce some changes.

But one of the main characteristics of the Delta variant is its ability to evade the immune system, so I would say that the mutations that led to this variable were the environmental factors, because it adapted to be more contagious and also to be able to spread easily.

But to give the right answer it is necessary to look into the specific mutations this variable has in regard to the ones that come before.

The correct answer is the letter C. Release chemical signals into the body as to regulate function. - Endocrine system

*Send nerve impulses through the body.- Nervous system

*Aid in digestion- Digestive system

*Act as a primary defense against foreign invaders- Immune system

Tissue is a term that best describes a group of similar cells working together.

What is a tissue?

First, cells on their own can function individually, they are the basic unit/  building block of every living organism, and they have the ability to grow, multiply and die. The cells in a Kangaroo provide structure for the body.

But, when two or more cells come together to perform a similar function, then they become a tissue. Tissue comprises of similar cells that work together to perform a specific task.

From the passage, connective tissue is formed from muscle cells of a kangaroo that organize together to form the structures that let a kangaroo walk, run, and hop, allowing it to avoid predators.

In summary, group of similar cells form tissues so they could perform a specific function.

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Answer: A & D

Explanation:

Answer:

True............................

They hated carpetbaggers for making a profit off the southerners misfortunes. Scalawags, who were southerners, were hated for working with free blacks to form governments in an era when the "respectable people" who had supported confederacy couldn't.

Analyzing all the options:

A. Nuclear power: energy obtained by splitting atoms, and it is nonrenewable.

B. Solar power: it is energy provided by sunlight, hence it is renewable.

C. Geothermal power: this kind of energy is obtained by the heat inside of the Earth, hence it is renewable.

D. Wind power: energy obtained by the kinetic energy of the wind, and it is renewable.

Horses and donkeys are different species. They belong to similar family and genus. Their chromosomes are different from each other. When these species mate, they will produce an offspring called mule. The mule produced is considered as sterile because it cannot produce an offspring.

Answer - Option B - that horses and donkeys are different species.

Answer: Does not appear so.

Explanation:

EMB agar is generally a dark red color. E. coli will grow with a green sheen on EMB. The colonies appear as if they may be slightly green but it is hard to tell with the condensation and lighting. It does not appear that it was grown on EMB though.

Refer to the picture below to visualize what E. coli growth looks like on EMB agar.

The Smiths have satisfied their need for safety in accordance with Abraham Maslow's hierarchy of needs.

Human motivation can be explained with the help of various psychological theories. Abraham Maslow's hierarchy of needs is one such theory which tries to define human behavior on the basis of several needs which can be organized in a hierarchical order. The need for safety comes after the physiological needs in the hierarchy.

The need for safety arises only when the basic physiological needs ( air, thirst, hunger, etc.) are fulfilled. The need for safety translates a person's need to be free from any kind of threat or danger in their surrounding environment.

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Hyperthyroidism is an over production of the thyroid hormone and hypothyroidism is an underproduction of th ethyroid hormone.

Hyper means overproduction or more than necessary amounts of thyroid hormones are produced

Hypo means the is underproduction or less amounts of the thyroid hormone are produced.

The first line of defense of the human's immune system is referred to as unspecific barriers whose main function is to block and prevent the entry of pathogens. It is composed of the skin, mucous and secretion such as saliva and sweat. Therefore, the correct answer to this question is option B, white blood cells, which have a more specific .

Answer:

DNA uses deoxyribose, but RNA uses ribose, which has an extra hydroxyl group (OH−) tacked on.

Answer: Criminal Case

Explanation: In a criminal case, the prosecution bears the burden of proving that the defendant is guilty beyond all reasonable doubt. This means that the prosecution must convince the jury that there is no other reasonable explanation that can come from the evidence presented at trial

Genes D and E are farthest apart on the same chromosome.

The value of crossover frequency between genes D and E is the highest, therefore, these two genes lie furthest apart on the same chromosome. As a general principle, the probability of a crossover between two particular genes is directly proportional to the distance between them. In other words, it can be said that the larger the value of the crossover frequency between two genes, the greater is the distance between them.

The unit centimorgan (cM) is generally used to estimate the distance between genes. One centimorgan is equal to hundred times the crossover frequency.

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The light reaction of photosynthesis is when the light provided activates the chlorophyll, which will split the water molecule, releasing H+ ions and oxygen. So, as this process occurs in the light process, it does not occur in the dark reaction. Therefore, the correct answer is a. Water is broken apart and oxygen released.

Answer:

Cell repair, photosynthesis and chemical reactions

Explanation:

ATP is an adenosine triphosphate, the energy-carrying molecule found in the cells of all living things. ATP works as a shuttle, capturing energy from the breakdown of food and transferring it to the parts of the cell that require energy to run their processes.

ATP has stored chemical energy in the pyrophosphate bond, which lies between the last two phosphate groups of ATP. When the cells need energy to do any work, ATP cleaves the third phosphate group, releasing a large amount of energy stored in the bond between the third and second phosphate group. Energy is required for all the cell’s activities. This includes visible activities, such as muscle movement when running or talking, as well as those that cannot be seen by the human eye, such as the nerve impulses involved in thinking or feeling. ATP provides energy for all these processes.

The important polymer where adenosine monophosphate is found is RNA. Adenosine monophosphate (AMP) is one of the components of RNA.

Dall Sheep  have Type I survivorship.

In general survivorship curve, is a graphical depiction of the number of individuals in a population that can be expected to survive to any specific age.

Their are three types of survivorship curves. Type I curves depict species  that have a high chances of surviving upto adulthood. Type II curves depict species whose chances of existence is not dependent on the age. Type III curves depict individuals that mostly likely to die in the early stages of their life. Reproductive strategies can also be explained by the survivorship curves.

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Social life is not complete without social difficulties. The term "social problem" refers to social circumstances, procedures, societal norms, or behaviors that are typically regarded as undesirable, detrimental, or endangering a number of values or interests, including social cohesion, the upholding of law and order, morality, the stability of social institutions, economic prosperity, or individual liberties. A social issue can also be perceived as a sense of collective guilt brought on by a failure to eliminate or improve certain unfavorable social situations that have a detrimental impact on particular segments of society.

Therefore, there is no presumption of value- or attitudinal neutrality in perception, interpretation, or intervention in this description of social issues. This specific characteristic distinguishes social phenomena that are seen to be social issues from other social or physical phenomena or situations that are thought to be difficulties tout court and that are possibly considered as not quite desirable or pleasant but without an element of threat.

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Let's take a look at the diagram for the cell cycle:

Recall that the order is from G1 phase to Telophase, where cells ready to undergo cell division start in interphase.

Let's define our answer choices:

0. Shrinkage of the nucleus

1. DNA duplication

2. Cytokinesis

3. DNA segregation

We are trying to find which of these answer choices occurs before cell division (which is known as mitosis/meiosis depending on the type of cell).

We can see from the cell cycle diagram that the stages before mitosis would be the G2 phase, the S phase, and the G1 phase.

Let's go through each of our answer choices:

0. Shrinkage of the nucleus - this answer choice ,never, happens in the cell cycle. The nucleus ,dissipates, or ,dissolves, away when the cell is ready to undergo mitosis.

1. DNA duplication - this answer choice is ,correct,. DNA duplication occurs during the ,S phase,, which is ,before, mitosis (cell division).

2. Cytokinesis - this is when the 2 cells during mitosis split and become 2 separate cells. This would signify the ,end, of mitosis, so this answer ,would not be correct,.

3. DNA segregation - this answer choice happens ,during, mitosis. Therefore, this answer choice is not correct.

Therefore, our answer choice is B.

CRISPR is a family sequences derived from viral DNA fragments, which is used by bacteria as a defense mechanism against bacteriophages. Together with the Cas9 enzymes, CRISPR is also a gene-editing tool. Therefore, the correct answer is the last option.