Answer:
If a DNA strand has the base sequence TTCCGGAA the complementary strand has the sequence AAGGCCTT.
Explanation:
A DNA molecule is constructed from sequences of its four nitrogenous bases: adenine, thymine, guanine and cytosine. Since DNA is made up of two strands, the sequence of nitrogenous bases of one strand is complementary to the other
.
The complementarity of the bases is a characteristic of the nitrogenous bases in the nucleic acids to combine with their complementary base, which is the same as saying that purines complement with pyramidines.
- <em>Adenine is combined with Thymine A=T
</em>
- <em>Cytosine is complemented with Guanina C≡G
</em>
In this way, given a sequence on a DNA strand
:
<em> T-T-C-C-G-G-A-A</em>
The complementary strand will have this sequence:
<em> A-A-G-G-C-C-T-T</em>
Answer:
Darker patches in the skin. Not mater the size, the small patch could be hiding cancer with the possibility of tumors under the patch of skin.
Answer:
Many common everyday services such as weather forecasting, remote sensing, GPS systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. Of the sciences, astronomy and Earth science benefit from space technology.
Explanation:
Answer:
The preferable words for the fill in the blanks will be -
afferent, efferent;
blood plasma;
diffusion (passive transport), active transport;
microvilli;
secretion;
urine output, cellular metabolism, diet;
1-1.8;
Urochrome;
urea, uric acid, creatinine;
vaporization, lungs, perspiration, skin, decreases;
dialysis.
Explanation:
- The glomerulus is a unique high-pressure capillary bed because the <u>afferent</u> arteriole feeding it is larger in diameter than the <u>efferent </u>arteriole draining the bed.
- Glomerular filtrate is very similar to <u>blood plasma</u>, but it has fewer proteins.
- Mechanisms of tubular reabsorption include <u>diffusion (passive transport) </u>and <u>active transport</u>.
- As an aid for the reabsorption process, the cells of the PCT have dense <u>microvilli </u>on their luminal surface, which increases surface area dramatically.
- Other than reabsorption and important tubule function is <u>secretion</u>, which is important for ridding the body of substances not already in the filtrate.
- Blood composition depends on <u>urine output</u>, <u>cellular metabolism</u><u>,</u> and <u>diet</u>.
- In a day's time, 180 liters of blood plasma is filtered into the kidney tubules, but only about <u>1-1.8</u> liters of urine is actually produced.
- <u>Urochrome</u> is responsible for the normal yellow coloration of urine.
- The three major nitrogenous wastes found in the blood, which must be disposed of, are<u> urea</u>, <u>uric acid</u>, and <u>creatinine</u>.
- When water loss via<u> </u><u>vaporization</u> from the <u>lungs</u>, or <u>perspiration</u> from the <u>skin</u> is excessive, urine output <u>decreases</u>.
- If the kidneys become nonfunctional, <u>dialysis</u> is used to cleanse the blood of impurities.