Stem cells are the cells that are pluripotent or multi-potent and have a tendency to produce and differentiate into types of cells and lineages. The stem cells found in the marrow can generate numerous types of blood cells.
The correct answer is:
Option: A. Undifferentiated cells divide to produce differentiated cells.
This can be explained as:
Therefore, stem cells are the undifferentiated cells that undergo differentiation to produce cells.
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The lights for the tank has been on all day and K measured the carbon in the air and found it decreasing how is carbon moving between the air and the living things in the tank
Carbon is being absorbed by the photosynthetic bacteria and algae present in the tank.
Explanation:The living organisms have a constant exchange of oxygen and carbon dioxide from the environment into their body. The carbon dioxide is released during respiration where as its absorbed during photosynthesis performed by plants and some photosynthetic bacteria. Similarly oxygen is released by these organisms during photosynthesis and absorbed during respiration.
Photosynthesis requires light for its occurrence. So as the light inside the tank was on, so the photosynthetic bacteria and algae that were present inside the tank were able to perform photosynthesis and they continuously absorbed carbon dioxide for that process.
So the concentration of carbon dioxide got reduced with time.
What type of shoes should be worn in the lab? flip flops
sandals
closed toed shoes
any type you want
Answer
closed toed shoes
Which elements are part of both proteins and nucleic acids but not
carbohydrates and lipids?
Answer:
nitrogen
Explanation:
The use of total global resources by humans is measured in ____________. Question 11 options:
barrels of oil used per person.
hectares of land used per person.
industrial metals used per country.
total food consumed per country.
Answer: Answer is hectares of land used per person
Explanation:
The use of total global resources by humans is measured in hectares of land used per person
Cells are the basic units of function and function of an organism, true or false
this answer is not false. therefore it is TRUE
Answer: true
Explanation:
not only are we made up of them we use them to heal,fit bacteria etc
How are telophase and cytokinesis similar? (3 points) Both events are the same for animals and plants.
Both events include DNA synthesis.
Both events occur toward the end of mitosis.
Both events result in fewer organelles.
Answer:
Both events occur toward the end of mitosis.
Explanation:
As mentioned, telophase and cytokinesis occur toward end of mitosis.
A is incorrect because During telophase and cytokinesis, animal cells form furrow or cleavage that gives way to formation of daughter cells. During telophase, plant cells phragmoplast forms in the center of the cell.
B is incorrect because DNA synthesis occurs in S phase.
D is incorrect because doesn't affect the organelle number as far as I know
Answer:
C
Explanation:
Both events occur toward the end of mitosis.
_
7. What disease does tuberculosis rival in rates?
Answer:
HIV/AIDS
Explanation:
Tuberculosis now rivals AIDS as leading cause of death: WHO. CHICAGO (Reuters) - For the first time, tuberculosis infections rivaled HIV/AIDS as a leading cause of death from infectious diseases, the World Health Organization said in a report released on Wednesday.
Which type of gas is needed for plants to make their own food? A.hydrogen
B.nitrogen
C.carbon dioxide
D.oxygen
Carbon dioxide is needed by plants to make their own food. So the correct option is C.
What is photosynthesis?
The process of synthesizing organic materials by plants for their nutrition by the use of inorganic raw materials is called photosynthesis. This process utilizes light. That is why it's called photosynthesis, photos meaning light.
The inorganic raw materials that are used are carbon dioxide and water. The light energy is derived from the sun and captured by the chlorophyll present in the plants.
The light energy is converted to chemical energy which is used for splitting the water molecule into hydrogen and oxygen. Hydrogen is used for the reduction of carbon dioxide for the formation of glucose.
The oxygen is released into the atmosphere as a byproduct. The glucose formed in the main product is further utilized by plants for the production of energy in the process of cellular respiration.
Therefore, the correct option is C.
Read more about photosynthesis, here
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Why can't most STIs be transmitted through casual contact with people or contaminated objects? edg 2020
What mistakes does the scientific method prevent?
The energy that drives surface ocean currents comes from temperature differences
salinity variations
wind
waves
Answer:
Wind
Explanation:
I just took the test its %100 correct Trust me ; ) good luck!!!!!
(Select all that apply.) Which of the following qualities make Earth a unique planet?
o the earth's density and rockiness
the earth's size and differentiation
the earth's distance from the sun
the earth's moon
the earth's gravity
the earth's differentiated composition
Answer:
Earths distance, Gravity, and composition
Explanation:
Question 4 Which of the following is found in eukaryotic cells but not in prokaryotic cells?
a nucleus
b mitochondria
c endoplasmic reticulum
d lysosomes
e all of the choices are correct
Answer: Option A) nucleus
Explanation:
Prokaryotic cells lack nuclear envelope, thus the nucleus is absent in Prokaryotic cells.
On the other hand, eukaryotic cells possess membrane bound nucleus and nuclear envelope.
Thus, nucleus is the answer
The ozone layer is found in the upper part of the thermosphere
absorbs much of the sun's harmful UV radiation
keeps the stratosphere very cold
is made of charged ions and free electrons
Answer: absorbs much of the sun's harmful UV radiation
Explanation:
The ozone layer consists richly of ozone molecules. Ozone with the chemical formula O3, is an allotrope of oxygen found in the atmosphere and helps to absorbs much of the ultraviolet radiation of the sun, preventing it from reaching the earth
Answer: absorbs much of the sun's harmful UV radiation
Explanation:
The ozone layer consists richly of ozone molecules. Ozone with the chemical formula O3, is an allotrope of oxygen found in the atmosphere and helps to absorb much of the ultraviolet radiation of the sun, preventing it from reaching the earth.
Question 8 All animals have eukaryotic cells and are
a multicellular
b invertebrates
c asexual
d vertebrates
Answer:
A: multicellular
Explanation:
hope it's right
What does the term "shell" refer to?
Answer:
The material that forms the hard outer covering of many animals. Hard outer covering or case of certain organisms such as arthropods and turtles. ... The definition of a shell basically means any hard surface that covers the outer surface of an organism.
Explanation:
Question 13 DNA replication ensures that each daughter cell will have all of the
a cytoplasm to hold the organelles
b genetic information it needs to carry out its activities
c organelles to allow the cell processes to happen
d cell membrane to protect the cell
ORIGINAL TOP STRAND: ATG-GGG-CCA-GTT-GAA-AAA-ATT-GCA-GAA-CTT-TGA NEW BOTTOM STRAND: TAC-___-___-___-___-___-___-___-___-___-___-
NEW TOP STRAND: ATG-___-___-___-___-___-___-___-___-___-___-
ORIGINAL BOTTOM STRAND: TAC-CCC-GGT-GAA-CTT-TTT-TAA-CGT-CTT-GAA-ACT
awarding 50 points!
Answer: Is the Top strand DNA or RNA?
DNA: TAC-CCC-GGT-CAA-CTT-TTT-TAA-CGT-CTT-GAA-ACT
RNA: UAC-CCC-GGU-CAA-CUU-UUU-UAA-CGU-CUU-GAA-ACU
Bottom Strand:
DNA: ATG-GGG-CCA-CTT-GAA-AAA-ATT-GCA-GAA-CTT-TGA
RNA: AUG-GGG-CCA-CUU-GAA-AAA-AUU-GCA-GAA-CUU-UGA
Explanation:
DNA= (A=T or T=A), (G=C or C=G)
RNA: (A=U), (T=A), (G=C)
Question 12 The stage of the cell cycle when DNA replication occurs is _______________.
a anaphase
b prophase
c interphase
d telophase
Why is DNA antiparallel? It has double strands complementing each other. The bases in one strand pair with the other bases in the complementary strand. It has a ladder shape. Its double strands run in opposite directions.
Answer: DNA is antiparallel because Its double strands run in opposite directions.
Explanation: The antiparallel nature of DNA strands means that as one strand runs in 5'->3' direction, the other strand runs in 3'->5' direction. The two antiparallel DNA strands are not identical in either base sequence or composition rather they are complementary to each other. This means that anywhere thymine base is found in one strand, adenine is present in the other strand and anywhere guanine occurs in one strand, cytosine occurs in the other strand.