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3 years ago

Most of the membrane's diverse functions are carried out by

1 answer:

4 0

A)
<span><u>proteins</u>

</span><span>Cell membranes contain membrane proteins that allows all the interaction that occurs within the cell. It makes the cell membrane selectively permeable because of its characteristics as being fluid or its fluidity which means to say that they can move freely within the lipid bilayer. The membrane proteins can also be stored in the lipid bilayer together with the enzymes. It cannot be denied that membrane proteins have a lot of functions based on its type. They can be integral proteins, peripheral proteins and lipid bound proteins. </span>

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Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree

Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

Explanation:

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

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{5760}=0.00012years^{-1}$

b) for completion of 36% of reaction

$t=\frac{2.303}{k}\log\frac{100}{36}$

$t=\frac{2.303}{0.00012}\log\frac{100}{36}$

t = 8515 years

The time was 8515 years.

3 0

3 years ago

Disorders can occur as a result of a person missing chromosomes or having too many chromosomes. Which of the following cells wou

kaheart [24]

Answer:

sex cells with 23 chromosomes: 22 autosomes and one sex chromosome.

Explanation:

Sex cells are the gametes and are products of meiosis. These cells have haploid chromosome number. Human sex cells are sperms and egg which serve as male and female gamete respectively. Human sex cells have n = 23 chromosomes. Out of total 23 chromosomes, 22 chromosomes are autosomes while one is the sex chromosome (either X or Y chromosome). Deviation from this pattern can cause any genetic disorder.

5 0

2 years ago

3. How does the salinity in water change as you move from inland areas out towards the ocean? Be sure to include the phrase "bra

Len [333]

Answer:

Explanation below.

Explanation:

3. The salinity of water increases as the water moves from the inland area to the ocean. This is because the ocean has high salinity.

Salinity is the amount or concentration of salt in the water.

WAYS BY WHICH ESTUARIES PROTECT THE INLAND AREAS

1. The plant in estuaries prevent shoreline erosion.

2. Protect the inland areas from flooding.

3. Protect the inland areas from storm surges from hurricane.

IMPORTANCE OF ESTUARIES TO INLAND PEOPLE AND WILDLIFE.

1. They provide nesting and feeding habits for many aquatic plants and animals.

2. Provide goals and services that are economically and ecologically indispensable.

3. Prevent shoreline erosion

4. Protect the inland areas from flooding.

IMPACTS OF DREDGING ON FISH LIVING ESTUARIES.

Dredging have negative impacts on the organisms in estuaries. These are

1. Habitat degradation

2. Remobilization of contaminants

3. Increase rate of sedimentation.

4. Increased the concentration of suspended matter.

8 0

3 years ago

Only red algae can grow in relatively deep regions of the ocean because red algae are: Select one: a. capable of absorbing carbo

Effectus [21]

Answer:

b. specialized for absorbing shorter wavelengths of light that penetrate deeper into the water for photosynthesis.

Explanation:

There are two lights which are responsible for the photosynthesis in plants and algae i. e. red and blue light. These two lights are absorbed by the plants and algae in the process of photosynthesis while most of the light colors are reflected. In water red light remains in low depth while blue light penetrate deep into the water due to its shorter wavelength. So that's why red algae can grow due to the presence of blue light and photosynthesis occurs.

4 0

3 years ago

Read 2 more answers

Question:

Shkiper50 [21]

The reason that might cause a reaction that originally proceeds through the path of X to change and proceed through the path Y is the addition of a catalyst.

<h3>What is a catalyst?</h3>

A catalyst is a substance that provides an alternative path for reaction. This implies that the energy tat s required to surmount the energy hump as the reactants are converted into products have been reduced. This can be seen in the fact that the energy hump between the reactants and the products in Y is lower than that in X

Thus, we could say that the reason that might cause a reaction that originally proceeds through the path of X to change and proceed through the path Y is the addition of a catalyst. The catalyst lowers the activation energy of the reaction.

Learn more about catalyst:brainly.com/question/12260131

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4 0

2 years ago