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2 years ago

Viruses and viroids differ in structure and the diseases they cause. how

Biology

1 answer:

kotegsom [21]2 years ago

7 0

Answer:

Viriods are the sub-virals which is the smallest agent of infectious disease. While Virus infects the plants and animals, viriod affects the plants only. Common Cold Virus, Influenza virus etc are some of the example of virus. Potato Spindle tuber Viroid is an example of Viroid. The Genome of virus is DNA and RNA but Viroid is consist of RNA only.

Explanation:

Hope this help!!

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Place in correct order the food chain having plankton, otter, sea bass, sun.

kobusy [5.1K]

Answer:

Sun--> Plankton---> seabass---> otter

Explanation:

plankton use photosynthesis to absorb energy from the sun to create food. sea bass consume plankton by filtering them from the water while otters will catch and eat the seabass

5 0

3 years ago

Read 2 more answers

How do temperature and salinity affect deepwater currents?

WITCHER [35]

Answer: They create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

The temperature and salinity has a major impact on water current of oceanic water. The warm water is usually less denser than colder water, so it remains at the surface of water body, whereas the colder water being more in density remain in a depth. The salinity of cold water is more than the warm water.

According to the above explanation, they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them is the correct explanation.

4 0

3 years ago

Read 2 more answers

There are several different assays to detect the products of digestive enzymes (hydrolases). since chemical changes cannot be se

Nataly_w [17]

The answer is benedict’s reagent. Benedict’s test is used to detect reducing sugars in solution when heated. The color change occurs from clear blue to a brick-red precipitate in the presence of the reducing sugars. The cupric compounds in the benedicts reagent react with the reducing sugars (enediols) produced from heating of the reducing sugars in the presence of an alkali. Benedict's reagent is comprised of a mixture of sodium citrate, sodium carbonate, and copper(II) sulfate pentahydrate.

3 0

3 years ago

If the sequence is CTAG was changed to CGTAG, what type of mutation occurred

AlexFokin [52]

Answer:

deletion mutation

Explanation:

during the replication this may occur

4 0

2 years ago

When a living organism dies, it stops taking in new carbon. Thus, as the radioactive carbon-14 decays, the ratio of carbon-12 to

Alexxandr [17]

Answer: The fossil is 11459 years old.

Explanation:

Half-life of carbon-14 = 5700 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{5700\text{years}}$

$k=1.21\times 10^{-4}\text{years}^{-1}$

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{years}^{-1}
t = age of sample = ?
a = let initial amount of the reactant = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process = 100 - 75 = 25 g Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}$

$t=11459years$

The fossil is 11459 years old.

4 0

3 years ago