A scientist investigated DNA replication in two groups of cells, labeled A and B. She injected radioactively labeled nucleotides into cells of each group and allowed DNA replication to begin. When replication was halfway completed, she injected a drug into the cells to stop replication. She then examined the cells to determine the distribution of the newly-synthesized DNA. She found each cell of group A had many segments of new DNA in its nucleus, while each cell of group B had a single segment of new DNA in its cytoplasm.

What can the researcher conclude about the cells?

A.
Group A cells are prokaryotic because they must have many origins of replication.
B.
The cells in group B are prokaryotic because they replicate their DNA in the cytoplasm.
C.
Group B cells are eukaryotic because they must have a single origin of replication.
D.
The cells in group A are eukaryotic because they replicate their DNA in the cytoplasm or nucleus.

Answer:d

Explanation:step by step explanation

PLEASE ANWSER CORRECT AND ASAPPL

Explain how extinction affects biodiversity.

Human behavior is frequently influenced by family and cultural experience resulting in habits and attitudes that began forming in infancy. Bill and his parents generally lead fairly sedentary lives often watching cartoons and playing video games. He would like to improve his health and physical condition. Which change does not represent a change toward more healthy habits?
A) Adding an afternoon walk and weekend family hikes in a nearby park.
B) Eating more fruits and vegetables and less meat, carbs, and dessert.
C) Order pizza and popcorn and watch more television as a family night.
D) Limiting screen time and reading more books and enjoy family game night.

mendel cross between yellow seed YY with green seed yy the F1 result will be . 1.all YY.
2.half YY and yy.
3.all Yy.
4.all yy​

Which ingredient is a food acid used to activate baking
soda in quick breads?
o honey
o buttermilk

Which number would show a Full Moon while on the surface of Earth looking up?

Some sugar is added to cold water in a beaker.
After some time, all the sugar dissolves and spreads throughout the water.
(a)(¡) Name the process that occurs which causes the sugar to spread throughout the water.
(ii) State two ways to make the sugar dissolve more quickly.
(b) Pure water can be obtained from the sugar solution using this apparatus.
Name the process used to obtain pure water from the sugar solution.
​

a scientific ________ is based on the results of numerous experiments.

Giving brainlist to whoever answers

Long-term mineral extraction has no lasting consequences.

pls answer pls please​

what classes of food is onions​

Name three reasons why the atmosphere is important to life on earth and explain your reasoning.

Climate change is leading to many changes to populations around the world. Some species are now able to live in environments that were to cold before. Other species are moving to areas more like the habitat they are most suited to. When a species moves into an area it is called ____, and when it moves out of an area it is called ____.
A
immigration, emigration
B
emigration, immigration
C
migration, extinction

I-
ehehehehehehehehehehehehe​

Please!! I’ll give you lots of points!! PHow do the sensory spines most likely help the cockroach
survive in its environment?
A. They improve the cockroach's vision so it can see
predators sooner.
B. They allow the cockroach to change its body shape
to confuse predators.
C. They reduce the friction along the top of the
cockroach so it can move faster than predators.
D. They allow the cockroach to move through small
spaces where it is unable to use its feet to escape
predators.

In the North Sea, eel feed on kelp, and herring feed on eels. Assuming that North Sea fishermen overfish (catch too many) herring to the point that their population greatly decreases, what is the most likely result on the eel and kelp populations?

A.
Eel population will increase while kelp will decrease.

B.
Eel and kelp populations will both increase.

C.
Eel population will decrease while kelp will remain the same.

D.
Eel and kelp populations will both decrease.

Microscopic organisms like ________________________ also go through natural selection and can become drug resistant.

a
fossils
b
plants
c
animals
d
bacteria

What is a phenotype?

Two alleles are different

The alleles an organism carries in its
genome, set of alleles.

The characteristics you can see in an organism. Physical appearance, personality, talents, weaknesses, etc

Two alleles that are the same.

How do invisible things such as sound and Wi-Fi internet travel from place to place?​

Select the correct answer.
Many farmers in United States rear animals for their meat and wool. The animals remain in confined spaces and feed on grains. Farmers give
growth hormones to these animals to hasten and increase their growth. Which type of farming are these farmers practicing?
OA. traditional livestock ranching
OB
modern livestock ranching
Ос. .
sedentary tillage
OD
nomadic herding

While investigating applications of science knowledge, Willy learned that scientists have used genetic engineering techniques to attach insulin-producing genes to bacterial DNA. These bacteria produce large amounts of scarce human hormones. Scientists predict that hormones produced by bacteria will be inexpensive and will not cause allergic reactions. (SC.7.N.1.5) Scientists developed hormone-producing bacteria because they wanted to

A string is pulled tight. A machine causes it to vibrate at different frequencies. What will happen to the vibrations in the string when they are vibrating at their resonant frequency?

A.
The amplitude of the vibrations will increase.
B.
The frequency of the vibrations will increase.
C.
The wavelength of the vibrations will increase.
D.
The period of the vibrations will increase.

Is a bird calls warning for prey a physical or behavioral adaptation?
Is an animals body temperature changing a physical or behavioral adaptation?
Is birds flying to high ground when they sense movement a physical or behavioral adaptation?

NO LINKS! NO PDF'S. Please, help ASAP!

what is cell wall. ASAP. please​

HELPPp!!!!!!I’ll mark u brainly

There has a been decrease in the diversity of plants in the grasslands of the Edward's plateau. What has caused this to occur?

A person is trying to solve the equation for the energy of a light wave: E=hcλ . She knows the values of h and c. What does the quantity λ represent?

A.
frequency
B.
wave speed
C.
period
D.
wavelength

For decades, scientists relied on the fossil record and comparative anatomy to assemble evolutionary lineages. Which statement describes a limitation of these methods? (1 point) They are no longer relevant because the fossil record is complete. They can show false relationships between organisms that are not reflected in the DNA. They are not reliable evidence of how the body structures of organisms evolved. They cannot be used to determine when species evolved.

Without feedback, what would happen to a person's height?

HELP ASAP PLZ