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MAVERICK [17]
3 years ago
7

Two strands of DNA is produced during replication are copies of each other because each strand in double helix is _____.

Biology
1 answer:
wlad13 [49]3 years ago
3 0
Answer:
            The correct option is b (complementary).
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9. Which of the following is a statement that describes a problem that can be solved using technology design?
Anna71 [15]
Answer: I would have to say the living room needs to be cleaned- because a robotic vacuum cleaner.
• Also It could be possible for a hockey player to use bungee cords to keep tension on his/her arms while practicing his/her shot to strengthen it.
4 0
3 years ago
___ 1. When the combined effect of two drugs, each producing the same biological response by the same mechanism of action, is eq
Valentin [98]

Answer:

Additive effects

Explanation:

In pharmacology, sometimes more than one drug is used to treat a disorder. The two or more drugs are used as they treat the disease more effectively than they treat the disorder independently.  The two drugs interact in one of the two ways: the additive effect and the synergistic effect.

In the given question, the drugs when combined produce the sum of the drugs equal to the effect shown by the drugs individually therefore the effect of the drug is added. This type of drug interaction is known as the additive effect.

Thus, Additive effect is the correct answer.

4 0
3 years ago
Ichthyosaurs, now extinct, were aquatic reptiles with dorsal fins and tails, similar to those of fish. Their most recent ancesto
velikii [3]

Answer:

Adaptations to a common environment and examples of convergent evolution

Explanation:  

Convergent evolution is a process by which two independent and phylogenetically separated organisms, get to develop similar structures or behavior to survive. These structures make possible a better performance in a similar environment. These organisms are morphologically or ethologically similar in their whole bodies or just in parts.  

Convergent evolution occurs in different phylogenetic branches independently from each other. It results from the need of different organisms to adapt to a similar environment and to solve a problem from that particular ecological niche. Ecological pressures acting on them might be similar, modeling the organisms´ phenotype. Each evolutive branch ends by developing the same structures, which they both find effective in their environment.  

In the exposed example, Ichthyosaurs (reptile) and fishes are separated species on evolutive time, corresponding to different phylogenetic lineages. Both of them inhabit the same aquatic environment. Pressures of the habitat acted on them and modeling their phenotypes. These species need to adapt to living in water, moving, feeding, scaping, chasing, etc. So both species arrived at the same solution. They developed dorsal fins and tails, which are important to stabilize the body in the water while swimming, making it more hydrodynamic and getting to propel better.

6 0
3 years ago
Someone who has vision in only one eye can no longer use _____ as a cue for the perception of depth and distance.
Furkat [3]
Binocular cues--particularly retinal disparity and binocular convergence

Binocular cues are information (depth/distance) taken in by both eyes. The two main types of binocular cues are retinal disparity and binocular convergence. 

Retinal disparity arises from the fact that our left and our right eyes, being a few centimeters apart, view images at slightly different angles. The two different images are merged into one and this allows us to perceive depth in the things we see around us. 

Binocular convergence is the simultaneous inward movement of both eyes in order to maintain a single binocular vision. The closer the object is, the more inward rotation is required for the eyes. The degree of rotation of the eyes helps the brain to interpret the distance of the perceived objects. 

8 0
3 years ago
Jackrabbit
PilotLPTM [1.2K]

Answer:

Hello!

The answer is D) Homeostasis

Explanation:

Homeostasis:

<em>The regulation of a cell or an animal's internal environment in response to fluctuations in the external environment is called homeostasis. </em>

Homeostasis is crucial to maintain an optimum environment for cell structures to work effectively.

In this case, the jackrabbiit's circulatory system is responding to fluctuating temperatures. In hot days, the body is at risk of heating up above optimum temperature which could hamper body functions. Therefore, the blood flow to the ears is increased to facilitate heat loss.

In cold temperatures, the blood flow to the ears is decreased to conserve heat for vital body organs. The blood flow is directed to the core of the body to protect the heart, lungs, liver and brain.

7 0
3 years ago
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