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3 years ago

Which of the following helps decribe the difference between science and society

1 answer:

8 0

The difference between science and society is that science has to do with the earth and your body and society has do do what with people say and do <span />

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Unlike perennials, annuals

egoroff_w [7]

B is the correct answer.

4 0

3 years ago

The trp and lac operons are regulated in various ways. How do bacteria regulate transcription of these operons? Sort the stateme

OLEGan [10]

Answer:

Operon is not transcribed:

-lac operon: lactose absent

-trp operon: tryptophan present

Operon is transcribed, but not sped up through positive control:

-lac operon: lactose and glucose present

-trp operon: tryptophan absent

Operon is transcribed quickly through positive control:

-lac operon: lactose present, glucose not

Explanation:

The trp operon is controlled via negative control only.

Presence of tryptophan will inhibit the transcription of the operon genes

The lac operon is controlled via negative control and positive control.

●Negative control:

--Transcription is turned off due to

active Repressor protein and absence of lactose

--Transcription is turned on due to

Inactive Repressor protein and presence of lactose

●Positive control:

--Transcription rate is higher due to absence of transcription and presence of lactose as a regulatory protein (CAP) adhere to the lac operon promoter

8 0

3 years ago

What happens to the abundance of angiosperm and gymnosperm pollen fossils at the kt boundary?

dimaraw [331]

The KT boundary marks a mass extinction event. the KT boundary is the time between the Cretaceous and Tertiary periods. An asteroid hit the earth at the end of the Cretaceous and that caused the end of the Cretaceous period. Before the KT boundary, pollen from angiosperms and gymnosperms is high. After the meteor hits the earth, a mass extinction occurs and the amount of pollen from gymnosperms and angiosperms decreases dramatically, while the amount of spores from ferns increases. During the Cretaceous period there were many species of gymnosperms and angiosperms but they disappeared at the KT boundary, when the asteroid hit the earth.

3 0

4 years ago

What does it mean to say that one species facilitates another species?

Slav-nsk [51]

Its when one species marries another species

7 0

4 years ago

In opsonization, antigens that are coated with antibodies are susceptible to

Vsevolod [243]

<span>Out of the following given choices;</span>

A. Further antibody attack.

B. Phagocytosis

C. Helper T cells

D. B cells.

E. None of the above.

The answer is B. Phagocytises is the engulfment of a particle from the external environment, by a cell, for ingestion. This is especially critical for the function of macrophages, which are immune cells. These macrophages have receptors for the Fc region of the immunoglobulin on their cell membrane surface.

4 0

3 years ago