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777dan777 [17]
3 years ago
7

Mr. Stein builds a model of a molecule out of wooden beads and pegs. He uses the model to explain the shape of the molecule. Mr.

Stein uses a model because
Biology
2 answers:
kipiarov [429]3 years ago
5 0

Answer:the answer is B:the real molecule is too small to easily observe

Explanation:

DIA [1.3K]3 years ago
4 0

Explanation:

A model illustrates the shape of the molecule and the orientation, in space, of the atoms that make up the molecule. This visualization enables the students to understand how the position of the atoms (beads) in the molecule and the different types of bonds (pegs) that join them. The interaction of the atoms (beads) and the bonds (pegs) between them affect the geometric structure of the molecule. This subsequently increases understanding of the molecule’s stereochemical outcomes of reactions.

#LearnWithBrainly

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the genes stc1 and stc2, which share a common ancestor, are found in both zebrafish and humans. all four stc genes display simil
Temka [501]

Based on these facts, we can state that the genes of the two organisms had a eukaryotic origin.

We can arrive at this answer because:

  • Despite having exons, prokaryotes do not have introns in their genomes.
  • This means that if two organisms have the same sequence of introns and exons, they have a common ancestor, in addition to having their genes originated in a eukaryotic organism, which explains the sequence of introns.

This means that the genetic expression of these two organisms has similarities, even if they are organisms with different biological processes.

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2 years ago
How does a melting glacier affect the ocean?
Mkey [24]
When a glacier melts, the ocean level rises therefore causing flooding and creating alien environments for those species that either live near the glaciers or on them.
8 0
3 years ago
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When a potassium ion (K) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several c
Sindrei [870]

Answer:

C) primary cell wall --> plasma membrane --> cytoplasm --> tonoplast

Explanation:

When a potassium ion moves from the ground into a vacuole of a plant cell, it must pass through the different structures that are part of it.

First, the outermost layer of the cell is the cell wall. Plant cells may have a primary and a secondary wall, but the latter is not always present. The primary wall is always located outwards (and in the case of having a secondary wall, it will be located between the primary wall and the plasma membrane).

Then, inside the cell wall, we will find the plasma membrane (also called plasmalemma).

When crossing the membrane, the ion will be in the cytoplasm of the cell and will be directed towards the vacuole, which is surrounded by its membrane called tonoplast. The vacuole is an organelle that has no definite shape, although it is always surrounded by the tonoplast, and it contains different substances such as water and enzymes.

7 0
2 years ago
What type of cell must contain a mutation for it to be passed down from women to offspring?
kumpel [21]
The mutation must occur in the egg cell
5 0
3 years ago
1. What is the percent increase in carbon dioxide in the atmosphere between 2015 and 2019? Between 1960 and 2015?
evablogger [386]

Answer:

1. Between 2015. and 2019. is 2.977667493796526% and between 1960. and 2015. its 27.129337539432175%

2. Carbon dioxide fluctuation is a direct response due to photosynthesis and respiration increase in spring and summer and decrease in fall and winter

Explanation:

8 0
3 years ago
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