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Paha777 [63]
2 years ago
15

Which are structures of the excretory system? Select four options.

Biology
2 answers:
saw5 [17]2 years ago
7 0

Answer:

spleen

esophagus

ureter

urethra

Explanation:

Ann [662]2 years ago
5 0

Answer: A C E F

Explanation:

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meriva

Answer:

Explanation:

motor neuron is the neuron that have it's connection to a muscle at the neuromuscular junction,. At his junction, a synaptic cleft that has a motor end plate is formed by the activity of the terminal called "synaptic terminal". Diffusion of the acetylcholine across the synaptic cleft then occur which result to the sarcolemma been depolarized, as a result of the depolarization there is a output of Ca2+ and muscle contraction

The effect that botox have on the neuromuscular junction and its function is that there is interaction between Botox and neural transmission which obstruct the acetylcholine to be released, which result to paralysis of muscle.

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3 years ago
Which best describes how mRNA is produced in a cell
Alex787 [66]
A. mRNA is made by RNA polymerase, using DNA as a template.
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3 years ago
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Describe the role of acetylcholinesterase in stimulation of a muscle fiber.
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Answer:

"It is the enzyme that breaks down acetylcholine in the synaptic cleft, ending stimulation of the muscle fiber. -It is the type of receptor found in the motor end plate that binds acetylcholine, initiating an electrical impulse."

Explanation:

4 0
3 years ago
When a germ cell undergoes meiosis, which event would MOST likely result in four aneuploid daughter
sveta [45]

Answer:

B. misalignment of the chromosomes during anaphase I

Explanation:

Aneuploidy refers to an error in the chromosomal number of a cell. This occurs when the chromosomes fail to separate equally into individual cells, a process called MEIOTIC NONDISJUNCTION. Meiotic disjunction can occur in either the anaphase stage of meiosis I or meiosis II, however, different outcomes are produced.

When chromosomes fail to separate at meiosis I, it results in two gametes that lack that particular chromosome (n-1) and two gametes with two copies of the chromosome (n+1). This means that the four daughter cells will have an incorrect number of chromosomes, hence, the misalignment of the chromosomes during anaphase I will result in four aneuploid daughter cells.

6 0
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What is the perimeter of the figure?<br><br> 36 in.<br> 42 in.<br> 44 in.<br> 48 in.
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170 in

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Add all values

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