BIOLOGY HIGH SCHOOL

What kind of bones do birds have?a. hollow
b. narrow
c. thin
d. cartilage

Answers

Answer 1
Answer: the answer is A, why u may ask is because the holes in the bones help the bird in flight, to help it stay in the air 
Answer 2
Answer: The answer is A, their bones are hollow so they are able to stay up in the air when they are flying

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How can a person donate blood and never run out of it?A. Blood components are continuously pumped by the heart.B. Blood components are continuously circulated through the blood vessels.C. Blood components are continuously produced in the bone marrow.D. Blood components are continuously digested by enzymes.
If the parent function f(x) = x2 is modified to g(x) = 2x2 + 1, which statement is true about g(x)?A. It is an even function. B. It is an odd function. C. It is both an even and an odd function. D. It is neither an even nor an odd function.
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Chemical reactions within the body sometimes require special proteins called _____ to catalyze the reaction
Many nonchordates have tails. Which feature differentiates a chordate's tail from that of a nonchordate?A. Chordates have postanal tails. B.Chordates have longer tails than nonchordates. C. Chordate tails are ventral in origin.

cell receptors and antibodies are similar in that both? b. are highly specific in their actions c. slow the rates of chemical reactions d. are involved in digestion

Answers

b. are highly specific in their actions. Cell receptors detect specific signals and Antibodies are usually released in response to specific foreign bodies.

Find the arc length of a circle that has a 6-inch radius and a central angle that is 65 degrees. Use 3.14 for π and round your answer to the nearest hundredth. Choose the answer from the choices provided. A. 0.65 inch
B. 1.13 inches
C. 6.80 inches
D. 390.01 inches

Answers

The arc length is calculated by using the equation below:

Arc length = 2πr ( C/360)

where r is the radius and C is the central angle.

Arc length = 2π(6) ( 65/360)
Arc length = 6.81 inches

Therefore, the correct answer is option C.

The arc length of circle is 6.81. thus option C is correct.

How is the radius used to compute arc length?

The arc length formula for a circle is times the radius of a circle. When is in radian, the arc length formula in radians is arc length = r. Arc Length = (/180) r, where r is the angle in degrees and L is the length of an arc.

The following equation is used to compute the arc length:

Where r is the radius and C is the central angle, arc length = 2r (C/360).

2(6) (65/360) arc length

The length of the arc is 6.81 inches.

As a result, option C is the proper response.

Learn more about circle here:

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What are two primary sources of energy that power living systems?

Answers

Sunlight is the main source of energy for the life on earth. Some organisms but not all rely on the energy stored in inorganic chemical compounds.
Light energy and Chemical energy

Some flowers smell like rotting meat. What is the most likely pollinator of this species of plant?a. flies
b. wind
c. butterflies
d. hummingbirds

Answers

If some flowers smell like rotting meat, the most likely pollinator of this species of plant are flies. 

The energy for life is: A. hydrothermal vents B. geothermal energy C. is recyclable D. is only initially captured by plants and other photosynthetic organisms; the rest of life depends on the energy the photosynthesizers captured for their energy.

Answers

Answer: A

Explanation:

List in the order the major blood vessels, chambers, and valves through which a drop of blood must pass in traveling from a vena cava

Answers

Deoxygenated blood flows from the vena cava, into the right atrium, it's then pumped through the atrio-ventricular valves and into the right ventricles. It is then pumped from the right ventricles through the semi-lunar valves to the pulmonary artery where deoxygenated blood is carried to the lungs
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