Answer:
People throw their trash and pollution into the fresh water and make it not as fresh or safe to the animals as much as it could be.
Explanation:
b. Release of Ca2+ from the sarcoplasmic reticulum through channels is slow compared to the uptake of Ca2+ into the SR via ATP-dependent pumps, resulting in Ca2+ slowly trickling into the sarcomeres between closely spaced action potentials.
c. When a series of action potentials is closely spaced, there is not sufficient time for Ca2+ uptake into the sarcoplasmic reticulum between action potentials, and Ca2+ remains bound to troponin throughout the series.
d. Fewer Ca2+ ions are released from the sarcoplasmic reticulum as a result of several closely spaced action potentials than as a result of a single action potential.
Answer:
The correct answer is - option C.
Explanation:
A series of closely spaced action potentials cause the sustained muscle to contract which is only possible if in the sarcomere of muscles the has high Ca2+ during the complete contraction cycle.
If the Ca2+ level is lower due to the sufficient Ca2+ were taken up into the sarcoplasmic reticulum in the sarcomere below the range between each action potential, the muscle would relax because the myosin-binding sites will be covered by tropomyosin.
The Ca2+ channels in the SR are able to move the ions more rapidly than the Ca2+ pumps can move in SR so this will cause the concentration of calcium to always high which leads to the binding of tropomyosin and therefore, the myosin-binding sites would be exposed until the contraction is achieved.
Living things are divided into five kingdoms: animal, plant, fungi, protist and monera. Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.
Answer: Nucleotide; Adenine
Explanation: RNA Nucleotide contains bases of Thymine, Cytosine, Guanine and Uracil. The Uracil base in RNA, substitute the base Thymine in the DNA base and bonds with Adenine like as seen in DNA base pairing.
Thus, during DNA duplication, the thymine at the top of the template strand of DNA is replaced with Uracil and binds with Adenine.
2. False
Answer:
yes true Crown colour evolves by natural sselection.
Explanation:
b. fluctuations in mood experienced by those suffering a bipolar disorder.
c. fear of snakes experienced by a high percentage of Americans.
d. dramatic increase in reported cases of dissociative identity disorder during the past 40 or so years.
The dramatic increase in reported cases of dissociative identity disorder over the past four decades is least likely to be explained from a biological perspective, compared to biologically-linked issues like schizophrenia or bipolar disorder.
A biological perspective would be least helpful for explaining the dramatic increase in reported cases of dissociative identity disorder during the past 40 or so years. This is because the sudden increase in reported cases is less likely to be due to changes in biological factors—which tend to be more stable over time—and more likely to be due to changes in diagnostic criteria, public awareness, or even social factors. In contrast, the prevalence of schizophrenia, fluctuations in mood experienced by those suffering bipolar disorder, and even common phobias, like the fear of snakes, have more direct connections to biological mechanisms such as genetic risk factors, neurotransmitter imbalances, and evolutionary predispositions.
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ALL that apply.
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A)
Meiosis produces genetically diverse cells.
B)
Meiosis increases genetic variation in the offspring.
C)
Meiosis produces haploid cells from a diploid parent cell
D)
Meiosis increases the genetic content in the daughter cells.
E)
Meiosis maintains the number of chromosomes originally present in the
parent cell.
The accurate statements are: Meiosis produces genetically diverse cells, Meiosis increases genetic variation in the offspring, and Meiosis produces haploid cells from diploid parent cell. The inaccurate statements are: Meiosis increases genetic content in daughter cells, and Meiosis maintains original number of chromosomes in parent cell.
The following statements accurately describe the outcome of meiosis:
These statements inaccurately describe meiosis:
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Answer:
A) Meiosis produces genetically diverse cells.
B) Meiosis increases genetic variation in the offspring.
C) Meiosis produces haploid cells from a diploid parent cell
Explanation:
Through crossing over, meiosis produces genetically diverse cells causing more genetic variation of offspring. The Daughter cells in meiosis are formed from a diploid cell that has all 46 chromosomes, however the daughter cells are haploids as they need to join with the other gamete to have a full set of chromosomes.