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Sholpan [36]
3 years ago
5

Directional selection only occurs in response to naturally occurring events.

Biology
1 answer:
Shalnov [3]3 years ago
7 0
The answer is: False
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If you get cov id or something can biohazard people take you?
s344n2d4d5 [400]

Answer: Depends on where you live, in the U.S. its considered unconsitutional, but in other countries such as china, goverment offcials in bioharzard suits can take you.

Explanation:

6 0
2 years ago
NEED BIO HELP ASAP 30 POINTS !!!!!!!!!!!!!!!!!!!!!!
alexandr402 [8]

1. Cell starts into mitosis phase of the cell cycle.

2. Helicase begins to break the hydrogen bonds between the nitrogen bases. (The double helix has to be unwound in order to expose the nucleotides)

3. DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. (this allows a new DNA strand to be made on the existing one)

4. Free floating nucleotides pair up with exposed nitrogen bases (this is what really builds the new strand, based around the template strand)

5. Two new molecules of DNA are created

Statements:

Adenine

Cytosine (Car in the Garage, Apple in a Tree is a good trick to know how they pair)

DNA

Replication

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4 0
3 years ago
Beryllium is one of the elements that scientist can use as a cosmic clock to determine age true or false
wariber [46]

Answer:

False

Explanation:

Beryllium is used in alloys with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes and non-sparking tools. Mixing beryllium with these metals increases their electrical and thermal conductivity.  Other beryllium alloys are used as structural materials for high-speed aircraft, missiles, spacecraft and communication satellites.  Beryllium is also used in nuclear reactors as a reflector or moderator of neutrons.

3 0
3 years ago
How do climate and abiotic factors affect how organisms will be distributed in ecosystems?
solong [7]

Answer:

Every organisms on the planet requires a specific environmental conditions for its growth and survival. If the environmental condition is favorable, the organisms grow fast and if the conditions are not suitable so it adversely affected the organisms. For example, plants grow best at the temperature between 25 to 40 Celsius. If the temperature goes below 25 or above 40, the growth decrease and sometimes the plant dies. So climate and abiotic factors such as temperature, humidity, light intensity etc has a great impact on the organisms.

6 0
3 years ago
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and _____
Readme [11.4K]

Answer:

The correct answer is 3 prime OH.

Explanation:

The joining of nucleotides takes place by a condensation reaction, which discharges a small, stable molecule. Unlike carbohydrates, proteins, and lipids, the molecules, which is discharged is not water, however, a pyrophosphate, that is, two phosphate groups combined together.  

In the polymerization of DNA, a phosphodiester bond is formed between a free 5 prime phosphate group at one terminal and a free 3 prime hydroxyl group at the other end. The naming of these sequences is done from 5 prime to 3 prime.  

3 0
3 years ago
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