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baherus [9]
3 years ago
13

german sciantist schleiden and schwann determained thatthe basic unit of struture and funtionin living thins

Biology
1 answer:
mote1985 [20]3 years ago
3 0

Answer:

They discovered cells.

Explanation:

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What is happening to the DNA molecule in the figure? (Explain the first step in DNA replication)
tatuchka [14]

Answer:

As this is DNA replication, this is the unwounding process

Explanation:

In DNA replication, the parent DNA to be replicated is unwound to enable access of the replication machinery (replisome) to this genetic material. The origin of replication will be identified first, which in the prokaryotes is only one, and in the eukaryotes, we have many. This sites are recognized by specific sequences on the genome. after this, melting of the DNA occurs at this origin creating a replication bubble and two replication forks. This  allows for the unwinding of the DNA by the enzyme Helicases in the direction of the replication fork. Another enzyme present in this step is also the single strand binding proteins (SSB). These proteins function in the prevention of re-anealing of the unwound DNA strand by attaching themselves to each strands. Another enzyme called the topoisomerases also function here by reducing the torque (twisting) produced upstream of the replication fork as result of DNA unwounding. An example is the gyrase

4 0
3 years ago
28. What is a gene? (1 point)
Alona [7]

Answer:

C) It is a pair of alleles that codes for a trait

Explanation:

Genes are made out of DNA and they determine the characteristics and traits one has.

5 0
3 years ago
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What makes the Sun appear so large and bright as seen from Earth? A) its size B) its heat C) its color D) its location
melamori03 [73]

Answer:

it's location is the answrr

5 0
3 years ago
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Amenorrhea may occur among women at fat levels as high as:
Sophie [7]
The correct answer is "16%"

16% of body fat in women is considered as low as normal body fat levels in women normally ranges from 22% to 25%. In cases of low body fat levels (i.e. in athletic women), there will be relative amenorrhea because of the suppression of the follicle-stimulating hormone and the luteinizing hormone leading to a type of amenorrhea called athletic amenorrhea.
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3 years ago
The term "substrate" is most commonly used to describe
nexus9112 [7]
The answer to this is c
7 0
3 years ago
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