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sammy [17]
3 years ago
11

Defending the body against bacterial infection and invasion by foreign substances is a function of __________.

Biology
1 answer:
vfiekz [6]3 years ago
4 0
The answers is white blood cells. White blood cells are the cells of the immune system, it defends the body against infection and disease. All white blood cells are produced and derived from multipotent cells in the bone marrow called hematopoietic stem cells.
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Pick the a.b.c below.<br><br>a. 8 grass/m2<br>b. 16 grass/m2<br>c. 24 grass/m2<br>d. 32 grass/m2​
Nataly [62]

Answer:

16grass/m²

Explanation:

Given parameters:

Number of grasses in quadrat = 4

Area of the square  = 0.25m²

Unknown:

Population density  = ?

Solution:

Population density is the number of organisms per given area;

  Population density  = \frac{number of grasses}{area of quadrat}  

 Population density  = \frac{4}{0.25}   = 16grass/m²

3 0
3 years ago
In photosynthesis, redox reactions ultimately transfer electrons from ______ to ______.
german

The correct answer is: D) H2O… CO2

Redox reactions are reactions of reduction (molecules tend to gain electrons) and oxidation (molecules tend to lose electrons).

Photosynthesis is a set of redox reactions. In photosynthesis electrons are removed from water (H2O) to carbon dioxide CO2 and then used to turn CO2 into organic compounds.  

The first step: Oxygen in water is oxidized (light energy required)

The second step: Carbon in CO2 is reduced; sugar is formed (dark reaction).

3 0
3 years ago
The sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as
soldi70 [24.7K]

The sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.

<h3>What are nerve receptors?</h3>

Nerve receptors can be defined as biological structures capable of converting external/internal stimuli to electrical impulses.

Nerve receptors include different types of cellular structures located in eyes, skin, mouth, nose, etc.

In conclusion, the sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.

Learn more about nerve receptors here:

brainly.com/question/25753221

#SPJ1

6 0
2 years ago
Compare and contrast evolution and creationism
tresset_1 [31]

Answer:

What's the difference between Creationism and Evolution? Creationism or Intelligent Design is the belief that life and the universe were created by a God!

Explanation:

8 0
3 years ago
Cell structures that plant and animal cells don't share are _____.
liubo4ka [24]

Answer:

a cell wall (because a plant cell is less rigid than an animal cell)

- a large central vacuole (where plant cells store water)

- chloroplasts (which plants use to carry out photosynthesis)

Explanation:

8 0
3 years ago
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