BIOLOGY HIGH SCHOOL

A person touches a hot surface with his hand and his hand springs back. Which two systems are operating?

Answers

Answer 1
Answer: The answer to this question is letter A.nervous system and musculoskeletal system   

When  person touches a hot surface with his hand and his hand springs back. His nervous system and musculoskeletal system   is operating. 

A.nervous system and musculoskeletal system   B.cardiovascular system and endocrine system    C.musculoskeletal system and endocrine system  D. nervous system and cardiovascular system


Answer 2
Answer: The answer is nervous and musculoskeletal system.

When a person touches a hot surface with his hand, a receptor detects a stimulus. The information is sent to relay neuron through a sensory neuron, parts of nervous system. Relay neuron sends information to the effector (musculoskeletal system) through a motor neuron and effector produces a response.

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Which of the following does not accurately describe movement within plants?A. Changes in the concentration of nutrients affect the cause of movement of fluid through phloem. B. Movement of sugars within the xylem results from changes in concentration of water. C. Transpiration is the only force that drives water movement within a plant. D. Cohesion and adhesion contribute to capillary action, which contributes to water movement.

Hormone therapy reduces the interaction of hormones with __________.a. 6y cells
b. antigens
c. vaccines
d. cancer cells

Answers

The answer is d. cancer cells.

In hormone therapy for cancer cells, exogenous hormones are injected. These hormones are called anti-hormones and their purpose is to reduce the interaction of body's hormones with cancer cells. They can reduce the level or inhibit the activity of some hormones that help cancer cells to grow. This way, anti-hormones reduce the ability of cancer cells to use body's hormones and their growth is affected.

Is human self-interest the driving force behind all environmental problems?Claim:

Evidence:

Reasoning:

Answers

Answer:

Claim: Yes, it is true that human self-interest is the driving force behind all environmental problems.

Evidence:  The Increasing rate of global warming is the best evidence for the claim.

Reasoning: This is so because of human self-interest such as buying a car, burning of fossil fuels in industries, use of plastic, cutting trees, and hunting or poaching result into all environmental problems such as air pollution, deforestation, and endangered wildlife which leads to global warming.

NA is made of nucleotides which are composed of A. a phosphate group, a sugar group and a nitrogenous base. B. a sugar group, an amino acid group and a nitrogenous base. C. a phosphate group, a starch group and a nitrogenous base. D. a protein group, a sugar group and a nitrogenous base.

Answers

NA is made of nucleotides which are composed of:  A. a phosphate group, a sugar group and a nitrogenous base.

Hope this helps!

Answer

the answer is A

Explanation:

Riparian zones are important to the natural environment because they _______

Answers

Riparian zones are important to the natural environment because they function as natural biofilters and protect the aquatic life and the aquatic environment.

Answer:

D) all above

Explanation:

short answer

How do enzymes speed up chemical reactions

Answers

They lower the activation energy, that is required for a specific process.

The enzyme works like a lock and key, where the lock is the enzyme that gets activated by a molecule the "key". Once they bind to each other the process gets started.

Without enzymes the process would have to occur entirely on it's own.

Answer

By lowering energy of activation of the reaction.


Explanation

High energy produced during the metabolism of reactant to product. Due to the large free energy of activation, the speeds of uncatalyzed biochemical reactions are often exceedingly slow. Enzymes lower this energy of activation so that more molecules have adequate energy to carry into the transition state to speed up the rate of reaction.

Genes act by directing the formation of: amino acids, chromosomes, specific enzymes

Answers

Specific enzymes
Enzymes are responsible for many activities that partake in the cell.
RNA or the ribonucleic acid is very important to the cell because the RNA is the only element that can enable a cell to make use of the instructions in the DNA in the process of producing enzymes which the body needs to function everyday. 

Answer:

The correct answer will be option- formation of amino acids.

Explanation:

The DNA contains specific coding sequences called genes which contain codes for the formation of the proteins by the production of specific amino acids. The genes undergo two important processes: transcription and translation.

The genes present in the DNA forms a transcript molecule called mRNA via transcription process which gets translated to the amino acids as mRNA contains codons which code for specific amino acids. These amino acids get bonded to each other via a peptide bond and form proteins.

Thus, option- formation of amino acids is the correct answer.
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What is the purpose of nictating membrane?
The plasma membrane does all of these except _____ .a. contains the genetic material b. acts as a boundary or border for the cytoplasm c. regulates passage of material in and out of the cell d. functions in the recognition of other cells