Mention the site of exchange of material between the blood and surrounding cells.

erica [24]

Inside a cell, numerous organelles function to remove wastes. One of the key organelles involved in digestion and waste removal is the lysosome<span>. </span>Lysosomes<span> are organelles that contain digestive enzymes. They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria</span>

7 0

3 years ago

Read 2 more answers

Wheat production W in a given year depends on the average temperature T and the annual rainfall R. Scientists estimate that the

Nimfa-mama [501]

Answer:

-1.1

Explanation:

Data provided in the question:

Average temperature is rising at a rate, $\frac{dT}{dt}$ = 0.15°C/year

Rate of change rainfall, $\frac{dR}{dt}$ = - 0.1 cm/year

$\frac{\delta W}{\delta T}$ = -2

$\frac{\delta W}{\delta R}$ = 8

Now,

we need to calculate $\frac{dW}{dt}$

since,

The wheat production (W) is dependent on the rainfall (R) and the Temperature (T)

thus, Using the chain rule , we have

$\frac{dW}{dt}$ = $\frac{\delta W}{dT}\times\frac{dT}{dt}$ + $\frac{\delta W}{dR}\times\frac{dR}{dt}$

on substituting the respective values, we get

$\frac{dW}{dt}$ = -2 × 0.15 + 8 × (-0.1)

or

$\frac{dW}{dt}$ = -0.3 - 0.8

or

$\frac{dW}{dt}$ = -1.1

3 0

3 years ago

Elements are basic forms of _____?

grin007 [14]

An element is the simplest form of matter that has a unique set of properties. Examples of well-known elements include oxygen, iron, and gold (see the figure below). Elements cannot be broken down into a simpler substance.

Explanation: Happy to help

8 0

2 years ago

The grants data showed that natural selection takes place

Svetradugi [14.3K]

<h3><u>Answer;</u></h3>

D) frequently, and sometimes rapidly

<h3><u>Explanation;</u></h3>

The hypothesis that the Grants have been testing was about the natural selection shaping the beaks of different bird populations.
<em><u>The Grants documented that natural selection takes place in the wild finch population frequently, and sometimes rapidly. </u></em>
The Grants' work showed that variation within a species increases the likelihood of the species' adapting to and surviving environmental change.

8 0

3 years ago

The tertiary structure of a polypeptide is the Select one:_________

Rufina [12.5K]

Answer:

The correct answer is C. The tertiary structure of a polypeptide is the overall three-dimensional shape of a fully folded polypeptide.

Explanation:

A polypeptide is a molecular chain composed of at least 10 amino acids (which are the molecules that make up proteins). When we talk about its tertiary structure, it refers to the complete overall three-dimensional structure of the polypeptide units of a given protein, where the polypeptide chain is fully folded and compacted. This folding is facilitated by unions called disulfide bonds, which are created from the cysteine residues, these bonds (called disulfide bridges as well) help to stabilize many polypeptides.

3 0

3 years ago