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notka56 [123]
2 years ago
11

Analogy: An enzyme's active site is to a specific substrate as a _______________ is to a ______________.

Biology
1 answer:
Molodets [167]2 years ago
3 0

Answer:Lock; Key

Explanation:

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A group of cells is assayed for DNA content immediately following mitosis (G1) and is found to have an average of 8 picograms of
mariarad [96]

Answer:

16 pg at the end of S

16 pg at the end of G2

Explanation:

A cell has 8 pg of DNA per nucleus in G1.

During S phase the DNA replicates, so every nucleus will contain double the normal amount of DNA that was present in G1. Therefore, at the end of S each nucleus would have 16 pg of DNA.

During G2 the cell continues growing and preparing for mitosis, but DNA content does not change: there are still 16 pg per nucleus.

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3 years ago
1. Describe what a growth factor is and<br> how it influences the cell cycle.
igomit [66]

Growth factors are hormones, proteins, or steroid molecules that regulate many cellular functions. They can stimulate the cell division by giving the signal to the cell to progress in the cell cycle.  

<u>Explanation</u>:  

Growth factors are naturally produced within the body and travels through the body to bind to their receptors present on their target cells. These growth factors are capable of signalling the cell to divide, proliferate, or heel. Their main aim is to signal or tell other cell when to do and what to do. Due to the binding with the receptors the growth factors activates specific genes.

8 0
3 years ago
To achieve which of the following goals would rotation of livestock be most appropriate? (3 points)
jeyben [28]

Answer: a, to avoid overgrazing, vegetation loss and soil erosion

Explanation: I just finished the assignment and it was correct

6 0
3 years ago
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The junction type that lets neighboring cells exchange small molecules is the
olya-2409 [2.1K]

Answer:

Gap junctions.

Explanation:

Gap junctions may be defined as the intercellular connection present between the cells of the animals. They are made of the connexons and present in all cells of the body except skeletal muscles.

The small molecules and ions can easily pass through the gap junctions. The neighbouring cells can pass the molecules and communicates with each other through the gap junctions. They are known as  macula communicans. Invertebrates have the gap junction made of innexin.

Thus, the answer is gap junctions.

3 0
3 years ago
Of all the atmospheric layers, the troposphere has the
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The troposphere has the highest density.
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3 years ago
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