How many amino acids are coded for by the dna?

1)Which of the following describes how infectious agents in the environment would most likely affect one’s personal health?

kvasek [131]

<span>1. c) Exposure would weaken the body’s immune system and leave it unable to fight future infections.
</span>2. <span>c) Excess amounts are removed by the kidneys and excreted along with urine.</span>

3 0

3 years ago

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Question 37 (2 points) Saved

Veronika [31]

Answer: The non-vascular plant group are

A) Chlorophytes

B) Charophytes

C) Bryophytes

Explanation:

Charophytes, Chlorophytes and

Bryophytes are those plants having multicellular body and doesn't have a vascular bundle i. e. xylum and phloem. In vascular plants, xylum ia is responsible for the transportation of water and phloem is responsible for the transportation of food materials from one part to another. These bundles are absent in Chlorophytes, Charophytes and Bryophytes.

3 0

3 years ago

what would you if cell membrane became impermeable instead of selectively permeable could cell remain alive

natali 33 [55]

If a cell membrane became impermeable, instead of selectively permeable, the cell would not remain alive, though certain organisms would be able to stay alive longer than others. This is because the cell membrane allows essential molecules and substances such as oxygen into the cell, while allowing harmful substances, like waste, out of the cell.

:)

4 0

3 years ago

Describe how each of the following brain scanning techniques would aid the doctors in making their diagnosis of these symptoms:

vlada-n [284]

Explanation:

The picture represents three steups. How can these setups be used to detrmine the strength

of the battery? Explain what does each case represent?

5 0

3 years ago

Under which conditions do most types of cells function at optimal levels

Scrat [10]

Explanation:

Cells maintain a constant internal environment; this process called homeostasis, ensures that cells obtain an optimal environment in which they can best function.

The endocrine system involves chemical signalling via the secretion of molecules called hormones into extracellular fluid. They bind to chemical receptors in order to cause specific changes in target cells, these lead to changes in the body's internal environment called homeostasis.

It includes the thyroid, parathyroid, pituitary, pineal and adrenal glands along with other regions. The bone, adipose tissue, heart, pancreas and liver are a few of the regions of the body which show endocrine function. The brain, or control center functions to receive and process the information from the receptor. Effectors receive the control center's command and illicits a response in the form of a feedback loop, that may oppose or enhance the stimulus.

Further Explanation:

During homeostasis the body maintains a constant internal balance in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.

For example, cells within the human body function at an optimal temperature between 97°F (36.1°C) and 99°F (37.2°C). This is due to the optimal temperature requirement of the enzymes within the human body, which requires this specific range to obtain activation energy.