Recently, some crop plants were genetically modified to be immune to the effects of weed killers. Which of the following should be determined before planting the resistant crop in fields?A: Could the gene for resistance be passed on to the subsequent generations of crops?

B: Could the gene for resistance to weed killers pass naturally from the crop plants to weeds?

C: could the gene for resistance increase the yields of the crop as compared to unmodified varieties?

D: Could the gene for resistance negativity affect the genetic diversity of the crop itself?

Answers

Answer 1

Answer: D: Could the gene for resistance negativity affect the genetic diversity of the crop itself?

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In which ways are RNA and DNA different?a. RNA has ribose sugar, DNA has deoxyribose sugar b. RNA has uracil, DNA has thymine c. RNA is single-stranded, DNA is a double-helix d. all of the above
According to evolutionary history and taxonomy, tigers resemble ____________ more closely than they resemble fish. A) hydra B) gorillas C) sea urchin D) grasshoppers
When a oligopoly exists, how many producers dominate the market
How do only certain cells respond to particular signaling molecules that may be sent throughout the body? see section 11.3 (page 244) . view available hint(s) how do only certain cells respond to particular signaling molecules that may be sent throughout the body? see section 11.3 (page 244) . they express the appropriate g protein. they express the appropriate second messenger(s). they express the ras protein. they express the appropriate receptor?
When a recessive trait is on the X chromosome: Answer males will never express it females will always express it males can express it more often than females will it will only be expressed in 1/4 of the offspring *males can express it more often than females will

Succession occurs when environmental factors affecting an ecosystem change. True or False

Answers

Answer: True

Succession is the phenomena in which changes in the biotic and abiotic factors of the environment leads to change in the ecosystem. A succession is a process in which a biological community is replaced by another biological community until a mature ecosystem is formed this process is influence by environmental factors. Primary succession is the primitive environment where no biotic community previously existed it is followed by secondary and subsequent succession were life forms develop and form an ecosystem. Some of the environmental factors are:

Topographical : These are the change in the region or habitat were succession occurs. Landslides, volcanic eruption, glacier melting etc. are the examples , as these topographical changes can bring reformation of the landscape. The disturbance caused by these topographical changes will allow the disturbance tolerant species to repopulate the habitat. This can be a transition from primary to secondary succession.

Soil : It is an abiotic factor.The growth of the plants requires suitable soil conditions. The type of soil will affect which species will inhabit the area. The soil moisture and pH greatly affect the number of plant species in an area.

Climate : It can influence the direction of succession. Climatic factors includes rain, wind etc. For example a region lacking proper rainfall the species will be tolerant to dry and drought conditions. The region with heavy rainfall, the species will be more tolerant to moisture. Wind being a climatic factor can cause wind erosion affect the soil quality. Wind can lead to heavy forest fires can therefore, wiped out community.

Succession takes place when environmental factors affecting an ecosystem change. Therefore, the given statement is true.

Succession refers to the process of ecological change over time in a particular area or habitat. It involves the progressive and predictable sequence of changes in species composition and community structure, leading to the development of a stable and mature ecosystem.

It can occur in both terrestrial and aquatic ecosystems. It is typically categorized into two main types: primary succession and secondary succession. It is a dynamic process.

Learn more about succession, here:

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What happens to an enzyme's structure as it exceeds the typical human body temperatur?

Answers

Answer;

The enzyme structure begins to break downintermolecular bonds are broken

enzyme molecules gain kinetic energy.

Explanation;

Enzymes are proteins that play an important function in the body of catalyzing reactions in the body.

Enzymes work best at optimum temperature; low temperature lower than optimum temperatures deactivates them and higher temperature denatures them.

The shape of an enzyme depends on its temperature; when they get too warm they get loose, and at very low temperatures they get too tight. At optimum temperature or at the right temperature then they are just at the right shape and the chemical reactions they catalyze will be at optimal rate.

How do adrenaline help in dealing with emergency situations

Answers

Adrenaline helps in emergency situation by providing energy so that the major muscles of the body can respond to the perceived threat.
In danger, the brain then sends nerve impulses to the adrenal gland in the kidneys. When the nerve signal reaches the adrenal gland, chromaffin cells, in the medulla of the adrenal gland, release epinephrine or adrenaline. It then enters the bloodstream. It is thus carried around the body to cells in various locations, where it initiates several responses.
1. Adrenaline, along with another hormone called glucagon, is responsible for the breakdown of glycogen in liver cells. Glycogen is a form of energy storage. This gives energy to the muscles
2. Adrenaline effects the skin also. Restriction of the arteries is caused by the binding of epinephrine/adrenaline to some alpha-adrenergic receptors. This cuts off blood supply to the skin. This results in the contraction of the smooth muscle cells in the skin, which cause the raising of the hairs on the surface of the skin.
3. The lungs contain smooth muscle. Epinephrine causes smooth muscles to relax. Specifically, epinephrine binds to beta-2-adrenergic receptors on bronchiole muscle cells. This allows the bronchioles to relax, which enables intensified respiration.
4. Adrenaline binds to beta-adrenergic receptors on heart muscle cells. This causes the contraction rate of the heart to increase. This ultimately leads to increased blood supply to the tissues in the body.

which organism would more closely resemble it's parent,one produced by asexual reproduction,or one produced by sexual reproduction? why?

Answers

An organism produced by asexual reproduction would more closely resemble its parent because an organism produced through asexual reproduction is created by the parent duplicating its genetic code and separating into two. Essentially the child is a duplicate.

Asexual, because the offspring comes directly from its parent organism

In lactic acid fermentationa. carbon dioxide is released.
b. lactic acid is produced.
c. NADH is recycled.
d. all of the above

Answers

going to say a. The two types of fermentation that most people are familiar with are ethanol fermentation and lactic acid fermentation. Ethanol fermentation is the process by which yeast and some types of bacteria convert sugar into alcohol and carbon dioxide. This process is used for making bread and producing alcoholic beverages such as beer, wine and hard cider. One common nonalcoholic beverage that is . produced via the fermentation process is tea. After the green leaves of the Camellia sinensis plant are steamed and dried, they are fermented, modifying the flavor. This is how oolong and black teas are made. In many beverage fermentation processes, the carbon dioxide not used in carbonation is released into the atmosphere. During the process of bread making, the ethanol alcohol from the fermentation evaporates. One can find physical evidence of fermentation during this process by smelling the characteristically yeasty aroma of rising dough.One type of lactic acid fermentation is used to culture yogurt from milk. During this type of fermentation, lactose is turned into lactic acid, which is the substance that produces the slightly sour taste in yogurt. Lactic acid fermentation is a somewhat simpler process than ethanol fermentation, and produces mostly lactic acid with little gas byproduct. Incidentally, lactic acid fermentation also occurs in the muscles of animals when more quick energy is needed than the flow of oxygen can supply. It is the source of some non-injury muscle soreness.Though often used in controlled environments, these two types of fermentation can also occur accidentally or as a result of neglect, which generally results in ruined products like sour milk or rotten fruit. Although fermentation is a helpful culinary technique that helps to preserve certain foods, the process is best done intentionally. It is essential that most foods are refrigerated at the proper temperature in order to maintain freshness.

Which of the following correctly explains how steroids and phospholipids are different? 1) Only phospholipids create cholesterol.
2) Only steroids have a four-ring carbon structure.
3) Only phospholipids do not contain fatty acids.
4) Only steroids are both hydrophobic and hydrophilic.

I think it might be 2 but I'm not completely sure, can anyone help?

Answers

The correct answer of the given question above is option 2. The statement that correctly explains how steroids and phospholipids are different is this: ) Only steroids have a four-ring carbon structure. The rest of the statements are considered false. Hope this answers your question. Have a great day!

Answer:

2) Only steroids have a four-ring carbon structure

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A group of paleobiologists were studying sedimentary rocks in the Rocky Mountains of North America. What order of organisms would they find in the layers of these sedimentary rocks? All organisms are arranged randomly in the layers of sedimentary rocks./ Newest organisms are at the bottom and the oldest organism is in the top-most layer of the sedimentary rocks. /Oldest organisms are at the bottom and the newest organism is in the top-most layer of the sedimentary rocks.

Which of the gazelles naturally selected traits is shown in this picture to be an evolutionary advantage?