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3 years ago

What is the oxidizing agent that accepts the electrons?

Biology

1 answer:

Nata [24]3 years ago

7 0

Answer:

oxygen, hydrogen peroxide and the halogens.

Explanation:

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3 years ago

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What is the meaning of life as we know it?

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Suicide is the only answer to this god for saken lifetime

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3 years ago

A tall plant crossed with a short one produced offspring, of which about half are tall and half are short. What are the genotype

stellarik [79]

Answer:

Rr x rr

Explanation:

Let's say

RR is a tall plant.

Rr is tall

& rr is a small plant

The only genotypes you can get to make two tall and two short is if you use a hetero pair and a same ressesive (rr) genes.

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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.

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3 years ago

Scientists studied reproduction in the New Zealand mud snail to answer the question, “Are there benefits to reproducing sexually

Elena-2011 [213]

Answer:

Sexual reproduction is advantageous over asexual reproduction because it reduces the rate of mutation accumulation.

Explanation:

The main advantage of sexual reproduction is that it increases the genetic variation in the species by creating new combinations of alleles.

However, asexual reproduction produces more offspring, as it is usually a quicker method of reproduction. It also does not require the organisms to socialise to mate.

Sexual reproduction does not reduce the rate of mutation, which is influenced by environmental factors as well as the genome itself.

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3 years ago

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