Answer:
TRUE
Desert plants are often widely spaced due to competition for rainwater.
Explanation:
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Answer:
The correct option is;
The number of adenine bases will be equal to the number of thymine bases
Explanation:
The four chemical bases that make up the DNA code are adenine (A), guanine (G), thymine (T), and cytosine (C) which are arranged based on a specif organism such that they represent the information regarding the building of the organism
The chemical bases of the DNA are found in pairs consisting of two chemical bases which are then known as base pairs. The possible base pairs are;
Adenine (A) pairing with thymine (T)
Cytosine (C) pairing with Guanine (G)
Therefore, the forensic scientist should expect to find that the number of adenine bases will be equal to the number of thymine bases.
Since the scientist was trying to find out the number of adenine bases in the DNA sample, assumption that the number of adenine would be equal to the number thymine would help.
According to the base-pairing rule of Chargaff, adenine always pairs with thymine while guanine always pairs with cytosine.
Going by this rule, we can say that the number of adenine must be equal to the number of thymine while the number of guanine must be equal to the number of cytosine in any DNA.
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B. zymogenic cells
C. mucous neck cells
D. enteroendocrine cells
Parietal cells produce intrinsic factor, which is important for the absorption of vitamin B12.
The correct answer to the given question is option A.
Intrinsic factor is a protein produced by parietal cells in the stomach.
It plays a crucial role in the absorption of vitamin B12 in the small intestine. Without intrinsic factor, vitamin B12 cannot be absorbed and can lead to a condition called pernicious anemia.
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b. stocked
c. produced
d. harvested
Answer:
The answer is d)harvested
Explanation:
Overfishing destabilize marine ecosystems. For example, many of the large fish, victims of overfishing, have almost disappeared from the oceans of Europe. Bluefin tunas have almost disappeared from the seas of Northern Europe. Sole is another fish that has almost disappeared in the North Atlantic. The most serious problems are due to trawls that, for example, are in the Irish Sea, where only shrimp and scallops are caught
Answer:
D.) All of the above
Explanation:
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The structure of virus consists of viral genome, nucleocapsid, tegument, envelope, and envelope protein. The genome is present in the Nucleocapsid.
The simplest of viruses are composed of genetic material and protein or capsid. Viruses do not produce many structural elements however some viruses may have an additional proteinaceous structure around the genetic material called nucleocapsid and a lipid bilayer covering the outer capsid layer called the envelope. The capsid is there to protect the genetic material from degradation. The viral envelope is derived from the host cell membrane and the virus encoded proteins. The sugar moieties attached to those proteins and this feature influences and contributes to the host specificity, host-parasite interaction etc.
The nucleocapsid protein is encoded by the gag gene in HIV virus and in coronavirus, it is the one present in greatest abundance and highly antigenic.
The virus structure varies among the different families and at the least has a capsid and in some there might be a nucleocapsid additionally covering the genetic material of the virus. It is either a capsid or the nucleocapsid and capsid that covers the genetic material.
The viral genetic material is covered by capsid and nucleocapsid.
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In times of stress, the brain stimulates the adrenal glands to produce hormones including epinephrine and norepinephrine, which aid in dealing with the 'fight or flight' response. The adrenal cortex also manages longer-term stress responses through the production of corticosteroids such as aldosterone in response to ACTH.
During times of stress, the brain activates the sympathetic nervous system and signals the adrenal glands to produce hormones that assist in managing this stress. Among these hormones are epinephrine and norepinephrine (also known as adrenaline and noradrenaline), which are produced by the adrenal medulla. These hormones regulate the acute 'fight or flight' response to stress, with physiological effects such as increased heart rate, blood pressure, and blood glucose levels. Acetylcholine stimulates the release of these hormones in response to neural impulses from the hypothalamus.
Meanwhile, the adrenal cortex is involved in managing long-term stress responses through the production of corticosteroids, stimulated by the hormone adrenocorticotropic hormone (ACTH). ACTH is triggered by Corticotropin-releasing hormone (CRH) from the hypothalamus. These corticosteroids, such as aldosterone, can influence fluid retention and blood volume, thus affecting blood pressure.
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