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3 years ago

7 whatistheexeretion?

Biology

2 answers:

Andrew [12]3 years ago

8 0

Answer:

excretion is the process by which the body excretes [throws out] unwanted substances

Explanation:

DaniilM [7]3 years ago

7 0

Answer:

Excretion is a process by which metabolic waste is eliminated from an organism.

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The genetic switch controlling whether a bacterium enters the lytic or lysogenic cycle relies on the binding of which two protei

givi [52]

Answer:

Cro and lambda

Explanation:

In the lysogenic cycle, the viral DNA is within the host DNA, while in the lytic cycle the viral DNA is separated from the bacterial cell, replicating independently from the bacterial DNA. The cro and lambda are DNA-binding repressor proteins of the bacteriophage lambda which bind to different operator sites, i.e., different genetic sequences found between the promoter and the structural gene. These proteins are known to have complementary functions in lytic and lysogenic cycles. The cro protein repressor binds non-co-operatively to operator DNA regions, while the lambda protein contains a domain (carboxy-terminal) that binds co-operatively to operator regions.

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3 years ago

What is a strength in the figure?

Arlecino [84]

The figure shows where mitosis occurs in the cell cycle. after the interphase

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3 years ago

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Suppose a couple wished to have children, but did not want to risk passing along a particular autosomal recessive disease. Using

Andrej [43]

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3 years ago

A forest was cleared to build a road. Which two would be the most likely effects on the ecosystem?

mihalych1998 [28]

Answer:

The new species will evolve to survive in the deforested land & animals will migrate to other regions in search of food.

Explanation:

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3 years ago

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A) In how many cases in the genetic code would you fail to know the amino acid specified by a codon if you knew only the first t

Vesna [10]

Answer:

a) 28 cases

b) 3 cases

Explanation:

a) From the table of genetic codes, there are 28 codons that specify more than one amino acid assuming only the first two nucleotides are considered. In these cases, one cannot outrightly specify the amino acid the genetic codes are coding for without knowing the last nucleotide of the codes. For example, UU can be for Phenylalanine or Leucine, CA can be for Histidine or Glutamine, etc.

b) From the table of genetic codes, the first two nucleotides of Arginine can be either of CG or AG, that of Serine can be either of UC or AG while that Leucine can be either of CU or UU. Only in these 3 cases would one fail to know which are the first two nucleotides assuming the name of the amino acids are given.

See the attached image for the genetic code.

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3 years ago

7 whatistheexeretion?​

7 whatistheexeretion?