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3 years ago

Plz help!!!!!

Biology

2 answers:

USPshnik [31]3 years ago

8 0

Answer:

The best answer for this question Is B. Due to it being the only thing that matches all of the requirements.

Musya8 [376]3 years ago

6 0

Answer:

Explanation:

They all do help improve quality of life.

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How does sexual life cycle increase the genetic variation in a species

SCORPION-xisa [38]

Answer:

The behavior of chromosomes during meiosis and fertilization is responsible for most of the variation that arises in each generation. Three mechanisms contribute to genetic variation arising from sexual reproduction: independent assortment of chromosomes, crossing over, and random fertilization.

3 0

3 years ago

The role of pigments in the photosynthesis reaction is to

pashok25 [27]

Answer:

Option A, Start the reaction by absorbing light energy

Explanation:

Chlorophyll is a green color pigment in plant that helps in entrapping sunlight. Being green in color, it absorbs the blue and red light and reflects the green light. The molecules of chlorophyll gains energy from sunlight and then jumps to higher energy levels by the process known as photo excitation. These excited molecules get ionized to further initiate the process of photosynthesis.

Hence, option A is correct.

4 0

3 years ago

Read 2 more answers

DUE SOON PLZ HELPP!!!!!!!!

agasfer [191]

The correct answer is A. Recording the sounds of a test tube breaking

5 0

2 years ago

calculate the quantity of electrical energy used by an electrical bulb rated 60 Walt's used for 2hours

ivanzaharov [21]

Answer:

0.12KWH

Explanation:

Time: 2hrs

Power: 60watt

60/1000

Formula: Energy=potential/time

0.06×2= 0.12KWH

6 0

2 years ago

Two cells (A and B) from an embryo in the first trimester of development were examined. The image on the left below shows a Sout

GrogVix [38]

Explanation:

A. The differential induction of DNA transcription suggests the cells are destined to become different tissues.

Given the lack of RNA encoding, DNA transcription is not occurring. This may happen because the cells are destined to undergo different forms of differentiation- here, transcription would require the activation of different regions of the genetic code called transcripts.

Sequences of DNA make up genes which can have different forms called alleles. DNA is transcribed into mRNA and later translated into amino acids which are linked together by rRNA to form proteins.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. Chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase to form mRNA complementary sequence to that of the DNA strand. These are then translated into proteins in ribosomes.