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Sauron [17]
3 years ago
13

May someone help me with this

Biology
1 answer:
allsm [11]3 years ago
8 0

Answer:

Option A. Stem cells could potentially be used as a source of renewable healthy cells and tissues.

Explanation:

Stem cell is a kind of cell which provides new healthy cells where it is needed in the body of organisms. Stem cells are continuously dividing and make new cells. These cells has the ability to change their structure according to other body cells and take the place of cell which are damaged.

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Which of the following are ways that DNA can undergo mutation? A. During DNA replication, the wrong base is added to the strand
trasher [3.6K]

Answer: Option C.

High-energy waves like UV light or radiation physically damage the DNA

Explanation:

Mutation is the change or alteration that occur in the DNA sequence or nucleotides sequence of an organism which is caused by mistakes when the organism is copied or environmental factors such as UV light.

Ultraviolet light cause mutations by activating the SOS repair systemof which is a part of i a new DNA polymerase that has no power to edit e but has the ability to move past the thymine dimer and synthesize DNA, This lead to cells able to replicate but with a high frequency of mutations.

7 0
3 years ago
A. Que interpretación o explicación le puedes dar a la cita "… las formas interminables más bellas y más maravillosas han evoluc
gladu [14]

Answer:

esta es una expresión de admiración ante la belleza de los mecanismos evolutivos

Explanation:

El concepto de evolución como mecanismos naturales que está actualmente en boga fue originalmente planteado por Charles Darwin en su celebre publicación "El origen de las especies" (1859). La teoría de la evolución de Darwin está basada en la idea que las especies cambian constantemente con el tiempo a través del proceso de selección natural. Este mecanismo es responsable de la inmensa biodiversidad biológica observada en la naturaleza, la cual incluye la evolución de las especies, poblaciones y organismos individuales. Desde una perspectiva biológica, es imposible no quedar fascinado ante la naturaleza y contemplación de los procesos evolutivos.

5 0
3 years ago
Hormones or paracrines that inhibit gastric secretion include ________.
enot [183]

Answer:

This question lacks options, options are:

A) histamine

B) gastrin

C) secretin

D) ACh

The correct answer is C.

Hormones or paracrines that inhibit gastric secretion include <u>secretin </u>.

Explanation:

Hormones pass into the blood that waters the digestive system, go to the heart, circulate through the arteries and return to the digestive system, where they stimulate the production of digestive juices. The hormones that control digestion are gastrin, secretin and cholecystokinin. Secretin is stimulated by intestinal acid at the duodenal level. Its effect inhibits gastric acid secretion, prostaglandin secretion and via somatostatin release. It decreases gastric emptying and stimulates bile and pancreatic bicarbonate secretion.

7 0
3 years ago
Read 2 more answers
There is a population where the frequencies of allele 1 and allele 2 are 0.7 and 0.3, respectively. Allele 1 has a selection coe
Lorico [155]

Answer:

0.8

Explanation:

There is a population where the frequencies of allele 1 and allele 2 are 0.7 and 0.3, respectively

Let's use GG to represent allele 1

Let's use gg to represent allele 2

So we can equally say that;

GG = p = 0.7

gg = q  = 0.3   ( from Hardy-Weinberg Equilibrium)

So, given that the selection coefficient = 0.2

We known that the cross between GG and gg will definitely results to (GG,Gg and gg)

Then the fitness of these genes can be represented as:

1 - s, 1 and 1 - t respectively.

Thus. the allele 1's genotype fitness can be determined as

= 1 - s    ( where s is the selection coefficient)

= 1 - 0.2

= 0.8

6 0
3 years ago
Read 2 more answers
What type of energy is transferred during heating? a. thermal b. convective c. conductive d. temperate
Katena32 [7]

Thermal energy is transferred during heating.

What is thermal energy?

  • Thermal energy refers to the ability to do work. As such thermal energy can also be defined as the ability of something to do work as a result of the movement of its particles.
  • In other words, thermal energy is the energy possessed by an object or body by virtue of the movement of its constituent particles.
  • It is the total internal kinetic energy of an object due to the random motion of its atoms and molecules.
  • Thermal energy is a type of kinetic energy owing to the fact that it results from the movement of particles. Kinetic energy is the energy possessed by an object due to its motion.
  • Thermal energy forms the foundation of the study of heat energy and thermodynamics. It is one of the oldest forms of energy utilized by mankind.
  • Its usage existed even before petroleum and nuclear power sources were discovered.

To learn more about thermal energy: brainly.com/question/3022807

#SPJ4

4 0
1 year ago
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