1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ehidna [41]
3 years ago
10

What is the basic unit of structure and function in living things?

Biology
2 answers:
zalisa [80]3 years ago
3 0
The answer is A. a cell
hope it helps!
Lady_Fox [76]3 years ago
3 0

Answer:

the answer is A. a cell

Explanation:

You might be interested in
Which of these elements are the least dense?
Gennadij [26K]
The first one because just think about how light oxygen or air is
3 0
2 years ago
Read 2 more answers
A newborn baby has a soft spot on the top of its head. over the next few months, the soft spot gradually hardens. what explains
GREYUIT [131]

A new born has soft spot on he top of its head. This is called as fontanelle and is diamond in shape present on the top of the head of the baby.

Babies skull is very soft and can be very easily moulded, to help them squeeze through the birth canal at the time of delivery.

Moulding is done in the skull of the babies as it is most largest part of the body during the time of delivery.

As soon as the skull and bones of the baby meet and fuse they become hard gradually.

6 0
2 years ago
The bones from an animal found at an archaeological dig have a C614 activity of 0.10 Bq per gram of carbon. The half-life of C61
erastova [34]

C14 is an isotope used in radiocarbon dating techniques to date organic matter remains. The age of these bones is approximately<u> 6890 years.</u>

<h3>What is Carbon 14?</h3>

Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.

Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.

The radioactive C14 nucleus contains 6 protons and 8 neutrons and has a half-life of 5730 years.

The term half-life is a reference. It means that an organism that has been dead for 5730 years has half the C14 amount or concentration than the same organism had when it was alive.

Knowing the half-life of an element is useful to determine the age of the dead matter.

C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.

<u>Available data</u>:

  • The half-life of C14 is 5730 years
  • Bones activity of 0.10 Bq per gram of carbon

To answer this question we can make use of the following equation

Ln (C14T₁/C14 T₀) = - λ T₁

Where,

  • C14 T₀ ⇒ Amount of carbon in a living body. We know, by bibliography, that living organism activity is 0.23 Bq per gram of carbon. So, C14 T₀ = 0.23 Bq/g
  • C14T₁ ⇒ Amount of carbon in the dead body. C14T₁ = 0.1 Bq/g
  • λ ⇒ radioactive decay constant = (Ln2)/T₀,₅
  • T₀,₅ ⇒ The half-life of carbon 14 = 5730 years
  • T₀ = Time when the organism was alive
  • T₁ = Age of bones

Let us first calculate the radioactive decay constant.

λ = (Ln2)/T₀,₅

λ = 0.693/5730

<u>λ = 0.0001209</u>

Now, let us calculate the first term in the equation

Ln (C14T₁/C14 T₀) = Ln (0.1/0.23) = Ln 0.4347 =<u> - 0.833</u>

Finally, let us replace the terms, clear the equation, and calculate the value of T₁.

Ln (C14T₁/C14 T₀) = - λ T₁

- 0.833 = - 0.0001209 x T₁

T₁ = - 0.833 / - 0.0001209

T₁ =  6889.99 ≅ <u>6890 years</u>

The bones are approximately<u> 6890 years.</u>

You can learn more about dating organic matter with carbon14 at

brainly.com/question/4149380

#SPJ1

6 0
2 years ago
Describe the function of the endoplasmic plasm
nlexa [21]
It synthesizes proteins and lipids, and puts them in vesicles and sends it to where it has to go
7 0
3 years ago
Which conditions need to be in balance for cells to function? Check all that apply.
sergejj [24]
For body cells to function properly, the following conditions need to be balanced:
1. BLOOD SUGAR
2. BODY WATER
3. BODY TEMPERATURE.
These three factors have to be in the right proportion for the cells and the body as a whole to function properly and to maintain homeostasis.
Blood sugar is the source of energy in the cell and it is required by all cell for carrying out the normal biochemical reactions in the body. The biochemical reactions in the body use water as a medium of reaction, thus the water balance in the body must be maintained. The body temperature also need to be kept at the normal level or else the normal biochemical reaction of the body will not be able to take place, due to the fact that incorrect temperatures deactivate the enzymes that mediate biochemical reactions.
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the definition of biology
    15·2 answers
  • Assessment of an elderly female client reveals the presence of bilateral pitting edema of the client's feet and ankles and pedal
    15·1 answer
  • The pancreas, an organ present in certain animals, produces enzymes used elsewhere in the animals' digestive systems. which type
    8·1 answer
  • When mosquitoes are very abundant, purple martins flock to the area and specialize on them. When mosquito populations are not la
    5·1 answer
  • Explain why earthquake and volcanoes appear in generalized belts around the planet the planet
    15·1 answer
  • What organelle controls a cell's packaging, storage and shipping functions?
    13·2 answers
  • Name the two types of variables in an experiment<br> plz answer
    12·1 answer
  • What are the reactants in cellular respiration?
    13·2 answers
  • CELL PROJECT BIOLOGY​
    7·1 answer
  • Plants gather the sun's energy using molecules called
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!