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lions [1.4K]
3 years ago
7

The decline and extinction of many predatory animal species is most probably the result of

Biology
1 answer:
Svetach [21]3 years ago
4 0
Predators and environment.
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A circular molecule of DNA contains 1 million base pairs. If the DNA synthesis at a replication fork occurs at a rate of 100,000
lakkis [162]

Answer:

<h2>5 minutes </h2>

Explanation:

1. In bidirectional replication;  there are two replication forks, and each proceeding at a rate of 100,000 (as given in the question) nucleotides per minute.  

2. So, by  the given rate of replication, we can calculate that, it would require 5 minutes for the circular DNA molecule to be replicated by bidirectional replication because each fork synthesize  500,000 nucleotides in 5 minutes ( 100,000 per minute) ( as given, in 5 minutes × 100,000 nucleotides per minute= 500,000 and by 2 forks= 1,000,000) within the time period.  

4 0
3 years ago
When a protein (peptide) hormone binds to receptors on the surface of a cell:
Licemer1 [7]

Answer:

the cell membrane becomes depolarized.

Explanation:

Na+ moves in, K+ moves out.

hope it helps!

7 0
3 years ago
Read 2 more answers
Hematopoiesis is the Select one: a. loss of blood due to hemorrhaging. b. production of only red blood cells. c. production of w
Elena L [17]

Answer:

The correct answer is c. production of white blood cells, red blood cells, and platelets.

Explanation:

Hematopoiesis is the formation of all types of blood cellular components and components of plasma like white blood cells, red blood cells, and platelets by hematopoietic system which involves the bone marrow, liver, and spleen.

First, the hemopoietic stem cell divides into common myeloid progenitor and common lymphoid progenitor. From myeloid progenitor RBC, platelets, basophils, eosinophils, neutrophils, and macrophages are formed.

Common lymphoid progenitor gives rise to T- lymphocytes, B- lymphocytes, and natural killer cells. Therefore the correct answer is c. production of white blood cells, red blood cells, and platelets.

7 0
3 years ago
Who developed the theory of evolution known as “natural selection”
gulaghasi [49]

Answer:charles darwin

Explanation:

8 0
3 years ago
What is the bottom layer of skin? hypodermis epidermis dermis submit rewatch?
quester [9]
The answer is the dermis.
4 0
3 years ago
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