The correct answer is two hydrogen bonds between adenine and thymine (the bond is thus weaker and longer) and three between cytosine and guanine.
A hydrogen bond is a bond formed between a hydrogen (H) atom and electronegative atom or group, such as nitrogen (N), oxygen (O), or fluorine (F).
Hydrogen bond is found in the double helical structure of DNA between its base pairs. Guanine is complementary linked with cytosine and adenine with thymine. Thanks to hydrogen bonds one complementary strand is connected to the other and replication is enabled.
Dna is located in the nucleus of the cell and makes up the_________
Dna is located in the nucleus of the cell and make up the chromosomes.
Every cell has a nucleus that carries DNA. In the DNA, thread-like structures are formed and are known as chromosomes. The chromosome are coiled up and tightly wrap around proteins.
DNA is in the nucleus of the cell and forms the organism's genetic material. It contains the information needed for growth, development, and reproduction. The genetic material is organized into structures called chromosomes.
Explanation:DNA, which stands for deoxyribonucleic acid, is located in the nucleus of the cell and makes up the genetic material of the organism. It is a molecule that contains information that an organism needs for growth, development, functioning, and reproduction. This genetic material is organized into structures called chromosomes. For example, in humans, DNA is organized into 23 pairs of chromosomes.
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Which of these statements about the hip joint is false? It permits circumduction.
it permits circumduction
The false statement about the hip joint is: b. It has a biaxial design.
However, stating that the hip joint has a biaxial design is incorrect. The hip joint is a ball-and-socket joint, which means it allows movement in multiple directions, not just two. It permits movements such as adduction, abduction, flexion, extension, internal rotation, and external rotation.
a. The hip joint permits adduction, which is the movement of the thigh toward the midline of the body.
c. The hip joint permits flexion, which is the movement of bending the thigh toward the abdomen.
d. The hip joint permits extension, which is the movement of straightening the thigh backward.
Therefore, the correct statement would be that the hip joint has a multiaxial or triaxial design rather than a biaxial one. Additionally, all hip joints in humans permit circumduction due to their structure and the muscles that act upon them.
The complete question is:
Which of these statements about the hip joint is false?
a. It permits adduction.
b. It has a biaxial design.
c. It permits flexion.
d. It permits extension.
Which of the following stimuli is the most powerful respiratory stimulant to increase respiration?
A) arterial pH
B) an increase in blood pH
C) rising carbon dioxide levels
D) a rise in body temperature
Rising carbon dioxide level in the blood is mainly due to increased respiration in tissues. The carbon dioxide excreted by cells dissolves in blood plasma producing carbonic acid that lowers blood pH. A homeostatic response of the body will be increase respiration rate to expel the excess carbon dioxide from the body so as to maintain a normal 7.35-7.45 pH.
Consider the following family history: Bob has a genetic condition that affects his skin. Bob’s wife, Eleanor, has normal skin. No one in Eleanor’s family has ever had the skin condition. Bob and Eleanor have a large family. Of their eleven children, all six of their sons have normal skin, but all five of their daughters have the same skin condition as Bob. Based on Bob and Eleanor’s family history, what inheritance pattern does the skin condition most likely follow? View Available Hint(s) Consider the following family history: Bob has a genetic condition that affects his skin. Bob’s wife, Eleanor, has normal skin. No one in Eleanor’s family has ever had the skin condition. Bob and Eleanor have a large family. Of their eleven children, all six of their sons have normal skin, but all five of their daughters have the same skin condition as Bob. Based on Bob and Eleanor’s family history, what inheritance pattern does the skin condition most likely follow? autosomal dominant X-linked dominant Y-linked autosomal recessive X-linked recessive
The inheritance pattern of the skin condition in Bob's family is most likely X-linked dominant, as all daughters have it (inheriting the X chromosome from Bob) but none of the sons do.
Explanation:Based on Bob and Eleanor's family history, the inheritance pattern of the skin condition is most likely X-linked dominant. This is because all of the daughters, who would have received Bob's X chromosome, have the condition while none of the sons do. This implies that the condition is carried on the X chromosome, and is dominant because it manifests in all the daughters who possess a single copy of the mutated gene. In X-linked dominant conditions, a father cannot pass the trait to his sons (as he contributes the Y chromosome), but can pass it to all of his daughters.
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The skin condition in the family follows an X-linked dominant inheritance pattern. This is evident because only the daughters, who each inherited an X chromosome from Bob, have inherited this skin condition. Understanding such inheritance patterns helps predict the likelihood of offspring inheriting a genetic disorder.
Explanation:Based on the provided family history, the skin condition in this family follows an X-linked dominant inheritance pattern. In such a pattern, an abnormal allele for a genetic condition present on the X chromosome is dominant over a normal allele. Here, Bob, who has the condition, has passed on this abnormal gene to all his daughters, because each of his daughters receives his X chromosome. His sons, on the other hand, receive his Y chromosome, so they don't inherit the condition.
For a pattern to be classified as X-linked dominant, it is sufficient for an affected father to pass on the condition to all his daughters. This pattern differs from autosomal dominant inheritance, where the offspring of either sex can inherit the condition when one parent is heterozygous and the other is homozygous for the normal gene.
The study of such inheritance patterns, which form a key part of human genetics, can help predict the likelihood of a couple's offspring inheriting a genetic disease or disorder.
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