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3 years ago

Which of the following describes what can happen to an enzyme as temperature rises?

Biology

1 answer:

xxTIMURxx [149]3 years ago

6 0

Explanation:

Increases in temperature increase molecular activity, and can result in a higher rate of collisions between enzymes and substrates. If the temperature rises too high, however, the enzymes could become denatured, and the positive effects of the temperature increase could be nullified.

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Which of the following is true about the inheritance pattern of a sex-linked trait?

bonufazy [111]

D. One sex has a higher chance to inherit it than the other (male).

These can be either recessive or dominant. We usually think more of the recessive traits like color blindness and hemophilia but dominant sex-linked traits also exist (fragile X).

5 0

3 years ago

A mating between a male donkey (2n = 62) and a female horse (2n = 64) produces sterile mules. why are mules sterile?

kirza4 [7]

The horse and donkey, though closely related by sharing a common ancestor, are different species. They have different number of chromosomes hence pairing of homologous chromosomes during fusion of gametes becomes complicated. The mule will have an extra chromosome from the horse hence will have abnormalities such as sterility. A Mule is unable to reproduce due to this same phenomenon. Homologous chromosomes are not well paired for meiosis I.

6 0

3 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

Estimating Population Size – Review the two approaches to estimating population size and answer the following questions.

Andre45 [30]

Answer:

b) there are 56 deer in 1000 acres of area.

Explanation:

If a person has 1000 aces of land and a local wildlife biologist tell him that on every 18 acres only one deer is present so in 1000 acres there are 56 deer are present.

calculation;

1 deer ------ 18 acres

x --------- 1000 acres

by cross multiplication, we get

18 x = 1000

both side divided by 18, we get

x = 55.5

by rounding off we get

x = 56

3 0

3 years ago

Did the employer use an incentive program to retaliate against Doug?

Lady_Fox [76]

Yea of course the use one

6 0

3 years ago