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4 years ago

What are some similarities between the structure of DNA and a ladder?

1 answer:

4 0

The similarity just lies in the structure. DNA is double-stranded, however it is twisted/helical, while the ladder does not twist. However, other than that, they are quite similar. The 2 strands (5' -> 3' and 3' -> 5') of DNA serve as the 2 vertical sides of the ladder. The base pairs of DNA are what connect the two strands together. So, in terms of the ladder, think of the steps of the ladder as the base pairs. Think each step as consisting of 2 entities joining together to make 1 big step. For example, think of a step having 2 halves down the middle. 1 half would be a guanine (base) and the other half would be a cytosine (base). Guanine is connected to the 5' --> 3' strand (Left vertical side of ladder) while the Cytosine is connected to the 3' --> 5' strand (right vertical side of ladder). These two come together at one of their ends and base pair, which appears to look like the steps on a ladder.

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nlexa [21]

Answer:

The correct answer is -

a) A plant cell B animal cell

b) nucleus

C) Vacuole

Explanation:

In plant cells, there is a large vacant space present in the center which is actually a vacuole that plays role in various types such as nutrients storage, water balance. In plant cells, a dense round structure present at one side of the cell known as the nucleus.

In animal cells, the vacuoles are absent or very small however the round dense structure of the nucleus is present in the center of the cell. Thus, the correct answer is -

a) A plant cell B animal cell

b) nucleus

C) Vacuole

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3 years ago

Stream of water will bend toward a balloon that has been read on a sweater to generate static charge which property of water is

Brut [27]

The polarity of the water molecule

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4 years ago

Please help i have no idea.

amid [387]

The answer is D, ADP gains a phosphate and that is used to convert to ATP with a product of ATP and water

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3 years ago

Read 2 more answers

Look at this food chain. What would happen if the<br> salmon were overharvested?

timama [110]

The salmon is a key player in the food web whose removal may cause an imbalance in the whole ecosystem.

A food web is a graphical diagram representing all connections between organisms in a given ecosystem.

Salmon represent the food for different types of animals in a food web, thereby their removal may cause serious harm to the balance of the ecosystem.

Salmon fish is a tertiary consumer because they eat herring which in turn eat zooplankton that eats phytoplankton.

Learn more about food webs here:

brainly.com/question/2179

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2 years ago

Draw a picture of DNA replication. Label the direction each strand is going, the enzymes involved with each step, the leading an

Step2247 [10]

Answer:

The fork is drawn to emphasize its similarity to the bacterial replication fork depicted in Figure. Although both forks use the same basic components, the mammalian fork differs in at least two important respects.

First, it uses two different DNA polymerases on the lagging strand.

Second, the mammalian DNA primase is a subunit of one of the lagging-strand DNA polymerases, DNA polymerase α, while that of bacteria is associated with a DNA helicase in the primosome. The polymerase α (with its associated primase) begins chains with RNA, extends them with DNA, and then hands the chains over to the second polymerase (δ), which elongates them. It is not known why eucaryotic DNA replication requires two different polymerases on the lagging strand. The major mammalian DNA helicase seems to be based on a ring formed from six different Mcm proteins; this ring may move along the leading strand, rather than along the lagging-strand template shown here.

Reference: Molecular Biology of the Cell. 4th edition. Alberts B, Johnson A, Lewis J, et al. New York: Garland Science; 2002.

4 0

3 years ago