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3 years ago

What light intensity and CO2 level do you think will maximize the rate of photosyntesis?

1 answer:

andrey2020 [161]3 years ago

6 0

The optimal light level for photosynthesis is 10,000 Lux. Lux is a unit for measuring light intensity. Low light intensity tends to lower rate of photosynthesis. However after reaching an intensity of 10,000 Lux, there is no increase in the rate. Carbon dioxide concentration in the atmosphere ranges from 0.03 to 0.04 %. It has however been determined that 0.1% of carbon dioxide in the atmosphere significantly increases the rate of photosynthesis . Therefore supplementing CO2 to the existing amount will speed up photosynthesis and plant growth rate will increase.

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The density of cristae is higher in mitochondria of the cell with higher rates of?

ollegr [7]

The density of cristae is higher in the mitochondria of the cell with higher rates of respiration.

The folds found inside the inner mitochondrial membrane are called mitochondrial cristae.

These folds provide a larger surface area where chemical processes, like redox reactions, can occur.

Due to the fact that the ETC enzymes are encased in the inner mitochondrial membrane, an increase in surface area through the production of many cristae may result in higher rates of respiration.

The inner membrane is folded into cristae to boost the mitochondrion's ability to produce ATP.

These folds enable the mitochondrion to contain many more ATP synthase and electron transport chain enzymes.

Hence, the density of cristae is higher in the mitochondria of the cell with higher rates of respiration.

Learn more about mitochondria here brainly.com/question/13912115

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3 0

2 years ago

How do we use relative dating to determine the age of a fossil, artifact, or rock layer?

disa [49]

Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

7 0

3 years ago

Select ALL the correct answers.

tekilochka [14]

Answer:

(b) The interquartile range of B is greater than the interquartile range of A.

(d) The median of A is the same as the median of B.

Explanation:

Given

$A = \{1, 4, 2, 2, 3, 1, 1, 2, 1\}$

$10th\ run = 9$

So:

$B = \{1, 4, 2, 2, 3, 1, 1, 2, 1,9\}$

Required

Select all true statements

(a) & (d) Median Comparisons

$A = \{1, 4, 2, 2, 3, 1, 1, 2, 1\}$ $B = \{1, 4, 2, 2, 3, 1, 1, 2, 1,9\}$

$n = 9$ $n = 10$

Arrange the data:

$A = \{1, 1, 1, 1, 2, 2, 2,3, 4\}$ $B = \{1,1,1,1,2,2,2,3,4,9\}$

$Median = \frac{n + 1}{2}th$

$Median = \frac{9 + 1}{2}th$ $Median = \frac{10 + 1}{2}th$

$Median = \frac{10}{2}th$ $Median = \frac{11}{2}th$

$Median = 5th$ $Median = 5.5}th$ --- average of 5th and 6th

$Median = 2$ $Median = \frac{2+2}{2} = 2$

Option (d) is correct because both have a median of: 2

(b) & (c) Interquartile Range Comparisons

$A = \{1, 1, 1, 1, 2, 2, 2,3, 4\}$ $B = \{1,1,1,1,2,2,2,3,4,9\}$

$n = 9$ $n = 10$

First, calculate the lower quartile (Q1)

$Q_1 = \frac{n + 1}{4}th$ [Odd n] $Q_1 = \frac{n}{4}th$ [Even n]

$Q_1 = \frac{9 + 1}{4}th$ $Q_1 = \frac{10}{4}th$

$Q_1 = \frac{10}{4}th$ $Q_1 = 2.5$

$Q_1 = 2.5th$

This means that:

$Q_1 = 2nd + 0.5(3rd - 2nd)$ $Q_1 = 2nd + 0.5(3rd - 2nd)$

$Q_1 = 1 + 0.5(1- 1)$ $Q_1 = 1+ 0.5(1 - 1)$

$Q_1 = 1$ $Q_1 = 1$

Next, calculate the upper quartile (Q3)

$Q_3 = \frac{3}{4}(n + 1)th$ [Odd n] $Q_3 = \frac{3}{4}(n)th$ [Even n]

$Q_3 = \frac{3}{4}(9 + 1)th$ $Q_3 = \frac{30}{4}th$

$Q_3 = \frac{30}{4}th$ $Q_3 = 7.5th$

$Q_3 = 7.5th$

This means that:

$Q_3 = 7th + 0.5(8th- 7th)$ $Q_3 = 7th + 0.5(8th- 7th)$

$Q_3 = 2 + 0.5(3- 2)$ $Q_3 = 2+ 0.5(4 - 2)$

$Q_3 = 2.5$ $Q_3 = 3$

The interquartile range is $IQR = Q_3 - Q_1$

So, we have:

$IQR = 2.5 - 1$ $IQR = 3 - 1$

$IQR = 1.5$ $IQR =2$

(b) is true because B has a greater IQR than A

(e) This is false because some spread measures (which include quartiles and the interquartile range) changed when the 10th data is included.

The upper quartile and the interquartile range of A and B are not equal

8 0

3 years ago

0000 UNITE

Alex777 [14]

Answer:

tundra, taiga, temperate grassland, rainforest

Explanation:

Tundra is known to be the coldest of all the biomes due to the high latitudes in which these areas are found. In this biome, the growth of the trees is limited by the low temperatures and the growing season is restricted to the summer season. The taiga is a type of biome composed of forest found in the subarctic areas, it is for that reason that taiga regions are also called boreal forests. Temperate grasslands are areas where grasses are dominant with very variable temperatures depending on the season (i.e. summer to winter seasons). In this biome, trees are relatively uncommon. Finally, the rainforest is the most diverse tree-rich biome where the high temperature and humidity conditions are optimal for life.

8 0

3 years ago

Read 2 more answers

Analysis of a blood sample from a fasting individual who had not eaten for 24 hours would be expected to reveal high levels of _

qaws [65]

Analysis of a blood sample from a fasting individuals who had not eaten for 24 hours be expected to reveal high levels of glucagon .

Hence the option B is correct .

<h3>What is glucagon ?</h3>

Glucagon is on of the natural hormone of the body .it is peptide hormone.

It is produced by alpha cells of the pancreas .

It controls bodily function which include it controls the glucose level in our body .

It will release in the response to drop in blood sugar due to prolonged fast ,exercise and protein rich meals .

Hence , OPTION B is correct .

Learn more about glucagon here :

brainly.com/question/14697323

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6 0

1 year ago