BIOLOGY HIGH SCHOOL

The most harmful by-product of nuclear energy is: acid rain
sulfur dioxide
carbon dioxide
radioactive waste

Answers

Answer 1
Answer: Radioactive waste is the best answer
Answer 2
Answer:

radio active waste is the correct answer

Related Questions

The flexible nature of a cell membrane results from its channel proteins true or false
Oxygen enters the ocean through mixing and photosynthesis. true or false?
The body’s reaction to a change in the environment is called a response. Please select the best answer from the choices provided T F
Which organelle contains digestive enzymes
a defect in which of the following molecules would dramatically reduce the rate of diffusion of water across cell membranes?

Near shore, larger sand and gravel particles are moved along the ocean bottom by _____.

Answers

Here is the answer that would best complete the given statement above. Near shore, larger sand and gravel particles are moved along the ocean bottom by TURBULENCE. Turbulence is the unsteady movement of water or air. Hope this answers your question. 

Answer:

TURBULENCE

Explanation:

Consider the following events of photosynthesis. 1. Light energy excites electrons. 2. Water molecules are split. 3. NADPH is formed. In which locations do each of these events occur? 1. photosystem II 2. photosystem I 3. photosystem I 1. photosystem II 2. photosystem II 3. photosystem I 1. photosystem I 2. photosystem I 3. photosystem II 1. photosystem I 2. photosystem II 3. photosystem II

Answers

Answer: Option B. 1. photosystem II 2. photosystem II 3. photosystem I

Explanation:

Photosynthesis is the process by which plants make their own food in the presence of light utilizing carbon dioxide and water. this process occurs in chloroplast which contains green pigments called chlorophyll.

Photosystem are defined as the cluster of chlorophyll pigments found on the thylakoid membrane ( in chloroplast) which functions to collect energy and concentrate it to reaction center which further uses the energy to excite electrons and pass on to enzymes.

Photosystem II absorbs light and energy which allows the excitation of electrons and creates an electron deficiency in Photosystem II. the deficiency filled by Z protein which contain manganese that stimulates splitting of two water molecules.

NADPH formation takes place in Photosystem I. Photosystem I accepts energy from light which excites an electron and passed on to an electron acceptor called FeS.  FeS then passes its e- to Ferrodoxin which donates its electron to NADP+ reductase. NADP+ reductase donates electron to NADP+ and add a proton  to form NADPH to get stabilized.

Hence, the correct option is B.

Answer:

B

Explanation:

i took the test on engenuity 2020

Why does the cell need to carry out transcription before it can begin translation

Answers

The cell needs to carry out transcription before it can begin translation because transcription is the first step of gene expression, whereby the segments of DNA is copied into RNA in other words mRNA by enzymes RNA polymerase.
 Both RNA and DNA are nucleic acids and they use base pairs of nucleotides as complementary language. It is during transcription when DNA sequence is read by an RNA polymerase which produces antiparallel RNA, complementary strand called primary transcript.
Transcription unit is the stretch of DNA which is transcribed into an RNA molecule and it encodes a protein then the transcription produces messenger RNA or mRNA the mRNA serves as a template for synthesis of proteins through the process of translation.
The transcribed gene may encode for either ribosomal RNA or rRNA, non-coding RNA for example microRNA. RNA performs a fundamental role in functions within a cell whereby it helps to regulate, synthesize, and process proteins.

Answer:

The cell needs to carry out transcription before it can begin translation because transcription is the first step of gene expression, whereby the segments of DNA is copied into RNA in other words mRNA by enzymes RNA polymerase.

Explanation:

Which of the following statements concerning Francisella is false?A. An attenuated vaccine is used for high-risk individuals B. It resists phagocytosisC. Humans are its only known hostD. It is extremely infectiousE. It cannot be treated with penicillins or cephalosporins

Answers

Answer:

Humans are its only known host

Explanation:

Humans are not the only known host for bacterium Francisella. For example, Francisella species such as Francisella tularensis uses many other organisms as its host.

Some of the non-human host organisms for Francisella tularensis are wild rabbits, most of the domestic and wild animals. The Francisella tularensis serve as causative agent of tularemia in these organisms which is a plague-like disease.

Write a brief note on lymphatic system in human being.

Answers

the lymphatic system returns fluids and solutes from peripheral tissues to blood; produces, maintains, and distributes lymphocytes; distributes hormones, nutrients, and waste products from their tissues or origin to general circulation.

Which activity is most likely to trigger secondary succession?

Answers

Answer:

Secondary succession generally occurs at the places where there was a previously established ecosystem.

The ecosystem that is destroyed due to some human activities or some natural disasters such as forest fire, flood et cetera.

This leads to the secondary succession where there was pressence of an ecosystem sometime before.

A company logging is most likely to trigger a secondary succession.
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Prior to 1850, the melanic form of the peppered moth in Europe was:______.
Why is it necessary to emulsify the colony in a drop of sterile water?
Explain the relationship between dna, genes, and chromosomes
Darwin discovered twenty different species of finches in the Galapagos islands. He hypothesized that as new islands arose, finches colonized the islands and rapidly changed into new species, depending on what food was available on each new island. The rapid formation of many new species, as in this case, is called