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cricket20 [7]
2 years ago
12

As scientist had investigated evolution from a variety fields they have found

Biology
1 answer:
nasty-shy [4]2 years ago
5 0
What are the answer choices!
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The enzyme DNA polymerase works only in the 5′ to 3′ direction. How does this affect the leading strand and the lagging strand?
aliina [53]

Answer:

B

Explanation:

DNA replication is semiconservative- meaning the old template strand will form a double helix with the newly synthesized strand. The DNA polymerase can only replicate DNA in the 5’ -> 3’ direction on a DNA strand. However, because the two strands of a DNA double helix run antiparallel (and they are replicated together), then during replication, one strand will be oriented in the opposite direction (i.e 3’ -> 5’ direction).

Because DNA polymerase requires a primer to begin replication, the leading strand will require one primer, because replication on this strand occurs continuously. On the lagging strand, many primers are required because replication is done piecemeal forming fragments called Okazaki fragments. The fragments are later joined by DNA ligases.

6 0
3 years ago
An event lasts 4 hours and 20 minutes. How long did the event last in seconds?
daser333 [38]

The event last in 15,600 seconds.

Answer: Option B

<u>Explanation:</u>

We know that there is 60 seconds in one minute i.e., 1 minute = 60 seconds

There is 60 minutes in one hour. i.e., 60 minutes = 1 hour.

Given : An event lasts 4 hours and 20 minutes

4 hours contains 240 minutes,

               4 \times 60=240 \text { minutes }

When the above expressed in seconds,

              240 \times 60=14400 \text { seconds } ------>eq. 1

When 20 minutes expressed in seconds,

              20 \times 60=1200 \text { seconds }------->eq. 2

Adding both eq. 1 and 2, we get

          4 hours and 20 minutes = 14400 + 1200 = 15600 seconds

7 0
3 years ago
Animal cells contain all of the following structures EXCEPT a A) nucleus. B) cell wall. C) mitochondria. D) Golgi apparatus.
Marina86 [1]
B) Cell wall
 The cell wall is a structure important cell protection and shape. It is necessary for the survival of unicellular organisms
8 0
3 years ago
Read 2 more answers
Please help me, and include the order correctly..
bearhunter [10]

Answer:

I did this exact same gizmo so here's a screenshot.

Hope it helps! :)

5 0
2 years ago
What does the word quicksilver mean?
kozerog [31]
Its synonym is Unpredictable

4 0
3 years ago
Read 2 more answers
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