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Lunna [17]
2 years ago
7

What are the three main functions of the cardiovascular system?.

Biology
1 answer:
Leviafan [203]2 years ago
4 0

The cardiovascular system has three main functions:

transport of oxygen, carbon dioxide and nutrients.

clotting of open wounds.

regulation of body temperature.

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List and describe three factors that affect how quickly enzymes can work to catalyze reactions
Lilit [14]

Answer:

The correct answer is - temperature, pH, substrate concentration.

Explanation:

Various factors affect the rate of enzymatic reaction such as pH, temperature, substrate concentration, availability of activators or inhibitors in the reactions, and enzyme concentration.

Temperature: Temperature affects the rate of the enzyme-catalyzed reactions. Like most of the reactions with an increase in temperature rate of enzymatic reaction also rises up to a maximum level and then declines if the temperature continues to increase as enzyme denatures after a particular temperature.

pH: Similar to the temperature pH also increases the rate of reaction up to a maximum level and then declines the rate as every enzyme acts only at an optimum pH range.

Substrate concentration: If the substrate concentration is increased gradually while the concentration enzyme remains constant, the rate of reaction will increase until it reaches a maximum.

5 0
3 years ago
Two scientists produce two different cladograms for the same group of organisms. Explain how the differences are possible.
S_A_V [24]

Answer:

Due to different grouping style

Explanation:

There are two modes of classifying an organism due to which two different cladogram are produced-  

A) When the organisms are grouped together on the basis of similarities shared by them – Such species are named based on the name of older species and the newly discovered species sharing similar traits are kept under older species thereby dropping its own name.  

B) In the second method, the minute differences are observed in species to group them into several branches arising from one parent organism.  

4 0
3 years ago
You are growing plants hydroponically (rooted in an aqueous solution rather than soil). The solution for the control group of pl
Vlad1618 [11]

Answer:

E. The length of cells in the elongation and mature zones would be larger in the control group.

Explanation:

The length of cells in the elongation and mature zones would be larger in the control group this is because of the increase in the solute concentration of the hydroponic growth medium which excluded the roots.

This reduces the amount of water that moves into the root system of the plants and nutrients which imitate drought conditions, this imposed drought leads to a decrease in the plant growth.

3 0
2 years ago
a man with pku marries a woman without any alleles for pku. what is the probability that their child will inherit pku?​
zvonat [6]

Answer:A man with pku marries a woman without any alleles for pku.There is little possibility that a child will inherit PKU

<u>Explanation: </u>

PKU Is Phenylketonuria results in less metabolism of amino acid. It might lead to a mental disorder or behavior problems. It is mostly Genetic.

If only one parent is suffering from it then there is little possibility that it will pass on to a child but if both the parents are having the problem of PKU then there are more chances that the child will also develop such a problem. It can be treated if we catch it at an early stage.

7 0
3 years ago
There were no geologists alive when the Bright Angel shale layer formed. However, scientists have been able to determine that th
klio [65]

Answer:

because people where not alive yet oontill cenoznic era

Explanation:

6 0
3 years ago
Read 2 more answers
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