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Butoxors [25]
3 years ago
5

Drag the descriptions or images to the correct box to show your understanding of the external structures of bacterial cells.

Biology
1 answer:
Vinil7 [7]3 years ago
6 0

Answer:

<u><em>flagella: has runs and tumbles </em></u>

<u><em>pili: involved in bacterial conjugation</em></u>

Explanation:

Flagella can be described as hair-like, long and thin appendages which are used by the bacteria for movement. Some bacteria have only a single flagellum while the others might have many of these. The flagella also help the bacteria to track down food particles.

Pili can be described as external structures of the bacteria that allow the bacteria to attach to different substrates. Pili also help in the transfer of genetic material from one bacteria to the other bacteria.

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What are to two types of gametes?A gamete is also known as?
STALIN [3.7K]

Answer:

What are to two types of gametes?

Sperm and Egg

A gamete is also known as?

Sex cells

What is the process called when the fusion of gametes create a zygote?

Fertilization

Is a zygote a diploid of haploid cells?

Diploid

<u>-TheUnknownScientist</u>

5 0
2 years ago
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What is the Molecular mechanism of DNA replication?
kolezko [41]

Answer:

DNA replication a process of copying of a cell's DNA.  DNA replication is semiconservative process which means that each strand in the double helix helps in the synthesis of new, complementary strand and conserve the parent template.

The Molecular mechanism of DNA replication is as following:

  1. The double starnded DN in binded with hydrogen bond, the enzyme helicase opens up the DNA at the replication fork.
  2. A single stranded binding protein prevent the rewinding of DNA and so binds to the DNA around the replication fork
  3. Topoisomerase prevent supercoiling at replication fork.
  4. The ezymes primase come in action and produces RNA primers which are complementary to the DNA strand.
  5. DNA polymerase III help to extends the primers and allow them to add  to the 3' end, to make new DNA.
  6. DNA Polymerase then remove RNA primers and replace with DNA.
  7. DNA ligase blocks the the gaps between DNA fragments.

So, this is the molecuar mechanism of DNA replication.

7 0
2 years ago
Color in McIver beetles is determined by two alleles at one gene locus. McIver beetles must have a heterzygous genotype (genotyp
seraphim [82]

Answer: The frequency of brown beetles is 0.32.

Explanation: The frequency of A1 allele is 0.8. As p+q=1, or the sum of dominant and recessive frequencies equals 1 or 100%:

1 - 0.8 = 0.2

In Hardy-Weinberg principle,

p^{2} + 2pq + q^{2} = 1

2pq represents the frequency of heterozygote individuals, so:

genotype A1A2 = 2*0.8*0.2 = 0.32.

Thus, the frequency of brown beetles (A1A2) in the population is 0.32.

3 0
3 years ago
Which changes would most likely limit the growth of a plant-eating animal population?
gayaneshka [121]
Probably if there are not enough plants in that area
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3 years ago
What are the thin fibers that send messages between the brain and different parts of the body?
a_sh-v [17]
Dendrites branch from the body and axons send the message
7 0
2 years ago
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