BIOLOGY HIGH SCHOOL

The basic structural unit of the body is the: heart brain cell tissue

Answers

Answer 1
Answer: Cells are considered the basic structural units of the body.
Cells are what make up the tissues that compose organs such as the heart and the brain. 
Answer 2
Answer:

Answer:

The correct answer would be cell.

Cell is the basic structural and functional unit of life or body. For example, nerve cell is the functional and structural unit of nervous system, nephron forms the structural and functional unit of excretory system et cetera.

When many similar cells work together to attain the same function, they form a tissue.

Similarly, similar tissues work in synchronization to form an organ which forms an organ system.

Ultimately, the organ systems form an organism.

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Like logistic growth, exponential growth A. reaches its carrying capacity over time. B. can be plotted in the shape of an S curve. C. exhibits a period of rapid growth as the population size increases. D. is slowed by limiting factors.
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A scientist working in which area of biology is MOST likely to study DNA?A. information and heredity

B. cellular basis of life

C. matter and energy

D. interdependence in nature

Answers

A. Info and hereditary

Answer:

c

Explanation:

In the presence of lidocaine, the action potential was NOT affected at R1 because _______. In the presence of lidocaine, the action potential was NOT affected at R1 because _______. lidocaine doesn't have an effect on the generation of action potentials lidocaine was applied upstream of R1 lidocaine was applied downstream of R1 there are no voltage-gated sodium channels to be affected

Answers

Answer:

In the presence of lidocaine, the action potential was NOT affected at R1 because lidocaine was applied downstream of R1

Explanation:

Lidocaine is an anesthetic that has the power to neutralize neuromal membranes. This anesthetic power allows the ionic fluxes capable of stimulating impulses to be diffused and this allows a dormancy to be achieved. However, when lidocaine is applied downstream to a molecule or structure, the action potential of that structure or molecule is not affected and it may continue to receive impulses.

Final answer:

Lidocaine does not affect the generation of action potentials because it blocks voltage-gated sodium channels.

Explanation:

In the context of neural signaling, lidocaine often functions as a local anesthetic by inhibiting voltage-gated sodium channels, which are necessary for the propagation of action potentials. If the action potential at R1 was not affected in the presence of lidocaine, it could be due to several reasons. One possibility is that lidocaine was applied upstream or downstream of R1, which would not directly impact the action potential at R1. Another possibility is that there are no voltage-gated sodium channels at R1 to be affected by lidocaine.

Learn more about Action Potential here:

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All of the following influence climate EXCEPT:a. Earth’s axis
b. elevation
c. proximity to water
d. air and water currents

Answers

All of the following influence climate EXCEPT A, Earth's axis

imagine that the farmlands in illinois and new york have been abandoned. After 300 years how will the vegatation on these lands differ?

Answers

It will live freely just like the forest. Maybe it will be as bountiful as what we want. Trees will not be cut. People in the future will have a bountiful life. The resources will not be a problem anymore. 

6. In an ecosystem, sometimes more than one animal is a predator to the same animal. For example, the great barn owl and the the bald eagle both share a habitat, and they both hunt mice. Which answer explains how this relationship can work? a. They are both hunted by the red fox. b. The eagle migrates to other ecosystems. c. The owl hunts at night, and the eagle hunts during the day. d. There is an overpopulation of owls.​

Answers

Answer:

C. The owl hunts at night, and the eagle hunts during the day.

Explanation:

They both have an equal opportunity to get food just at different times.

Which part of the immune system is produced in the bone marrow and circulates through the blood to destroy germs?A.
red blood cells

B.
white blood cells

C.
lymphocytes

D.
fibrin

Answers

the answer is white blood cells

Answer:

B. the correct answer

Explanation:
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In what form is energy lost from the ecosystem?A. Egestion B. Light C. Excretion D. Heat