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mixer [17]
3 years ago
15

When viewing a cork through his homemade microscope, Robert Hook discovered small compartments that he called

Biology
1 answer:
Hoochie [10]3 years ago
6 0

Answer:

Answer: cells

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Mutagens are useful in biotechnology research for producing organisms with altered phenotypes. producing new organisms which hav
ICE Princess25 [194]

Answer:

The correct answer is A.

Explanation:

A mutagen changes the level of mutations that occur in the DNA either by affecting it physically or chemically. This helps researchers create different organisms with altered phenotypes according to what the research needs so that the genes can be investigated further under a controlled environment.

So the answer is A.

I hope this helps.

4 0
3 years ago
Please answer!!
Mariana [72]

Answer:

C. Immune system

Explanation:

7 0
3 years ago
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Which of the following is(are) true concerning the 2004 tsunami in Indonesia? It had minimal human casualties. b. The tsunami wa
Oduvanchick [21]

Answer:

The correct answers are B and C. The tsunami waves were as high as 500 feet, and it was triggered by a 9.1 magnitude earthquake.

Explanation:

The 2004 Indian Ocean tsunami was a series of tsunamis that swept the shores of most countries along the Indian Ocean on December 26, 2004, killing almost 280,000 people. This is considered one of the biggest natural disasters in history. The tsunami was caused by a huge 9.1 magnitude earthquake that shook the underwater off the west coast of Sumatra. This was the third largest earthquake measured by a seismometer. The ensuing tsunamis reached a height of 30 meters in some places when they made landfall. It has been confirmed that 131,028 people have died in Indonesia. More than 30,000 died in Sri Lanka and thousands died in India and Thailand. In Somalia, 4,500 km from the epicenter, 176 people were killed and about 50,000 people lost their homes. $ 14 billion in emergency aid was collected for the worst-affected countries.

6 0
3 years ago
Read 2 more answers
How does cloning work and work are the basics​
Musya8 [376]

Answer:

How cloning works: In reproductive cloning, researchers remove a mature somatic cell, such as a skin cell, from an animal that they wish to copy. They then transfer the DNA of the donor animal's somatic cell into an egg cell, or oocyte, that has had its own DNA-containing nucleus removed. ... This young animal is referred to as a clone.  

Basics of cloning:

Isolation of target DNA fragments (often referred to as inserts)

Ligation of inserts into an appropriate cloning vector, creating recombinant molecules (e.g., plasmids)

Transformation of recombinant plasmids into bacteria or other suitable host for propagation.

Screening/selection of hosts containing the intended recombinant plasmid .

Explanation:

4 0
2 years ago
Indicate whether each of the following occurs mainly in G1 phase (G), S phase (S), or G2 phase (H) of the cell cycle. Your answe
Ronch [10]

Answer:

Correct choice should be:

"SGSG"

Explanation:

The cell cycle consists of G1, S, G2 and M phase. The former three phases include the interphase and M phase is the dividing phase of cell . G1 prepares cell for DNA synthesis. S phase is the phase where DNA replication takes place. G2 phase prepares cell for cell division or M phase.

G1 phase preceeds replication or S phase and G1 phase licences DNA replication.

During other phases of cell cycle, ORC complex masks origin of replication. ORC phosphorylation takes place at S phase, which removes this omplex and unmasks origin of repication site so that replication machinery can bind to it.

DNA helicase activation: S phase

DNA helicase deposition on DNA at the replication origins: G phase (actually G1)

ORC phosphorylation: S phase

Licensing of replication origins : G phase (actually G1)

Hence correct choice should be:

SGSG

5 0
3 years ago
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