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antoniya [11.8K]
3 years ago
8

Why might you want to use a single fixed pulley?

Biology
1 answer:
gizmo_the_mogwai [7]3 years ago
4 0

Answer:A

Explanation:

A fixed pulley raises the load in a unidirectional manner... This therefore reduces the force required to raise that same load without the pulley.. It actually reduces the force required to raise objects

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Which of the following is NOT a mechanism used to temporally regulate the activity of maturation-promoting factor (MPF)?
slavikrds [6]

Answer:

C. glycosylation

Explanation:

The maturation-promoting factor (MPF) is a cell cycle checkpoint that stimulates the passage from G2 (prophase) to M phase (metaphase). MPF also determines that DNA replication during the S (synthesis) phase did not produce any mutations. MPF is inactivated by kinase phosphorylation and activated by specific phosphatases capable of dephosphorylating this protein. On the other hand, glycosylation is a posttranslational modification where a carbohydrate (i.e., a glycan) is added to a functional group of another molecule. Many proteins undergo glycosylation, thereby playing a critical role in regulating protein function.  

3 0
3 years ago
What is causing the roots of a plant to grow downward
makkiz [27]

Answer:

Geotropism is the influence of gravity on plant growth or movement. Simply put, this means that roots grow down and stems grow up. ... In this case, the stimulus is gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots is called positive geotropism.

Explanation:

8 0
2 years ago
What would be first three amino acids in the protein formed from this gene? UTC GTU TTG
Andrews [41]
<h2>Answer:</h2>

The three amino acid will be Tyrosine, Asparagine and Lysine respectively to sequence.

<h3>Explanation:</h3>

UTC GTU TTG

First the thymine in the sequence is changed to A, adenine because in the mRNA only three types of nucleotides are allowed which are Adenine, thymine and Uracil.

So the sequence will be:

UAC GAU AAG

These codons will be read by tRNA producing the polypeptide sequence of amino acids which are as follow:

Tyrosine Asparagine Lysine.

8 0
2 years ago
How does maintaining water quality help ecosystems?
klio [65]
A because it pertains the the ecosystem
7 0
3 years ago
Which of the following statements are true. Chloroplasts are the sites for photosynthesis. Mitochondria specialize in oxidative
Leokris [45]

Answer:

  1. Chloroplasts are the sites for photosynthesis
  2. Mitochondria specialize in oxidative metabolism
  3. Ribosomes are involved in protein synthesis

6 0
3 years ago
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