2. Define the structure of DNA by filling in the
descriptions below

Answer:

Please refer to the explanation below.

Explanation:

The sugar and phosphates molecules form the sides of the helix.

The nitrogen bases form the teeth of the helix.

Each nucleotide is made of a nitrogen base, a sugar, and a phosphate group.

Which is one piece of information that fossils in samples from Earth’s crust reveal about Earth’s history?

Anna went to her physician complaining of fatigue and swelling in her legs. She explained the doctor that she exercises often and does not drink water. She also revealed that she is smoker. Doctor sad that she was dehydrated, had edema and probably hypoproteinemia (low plasma protein concentration). He ordered some blood tests and ECG. ECG revealed that she had atrial fibrillation, which he said might explain her fatigue. Doctor advised her perhaps exercise more moderately, drink water and that she should definitely stop smoking.

- How might a blood test help to diagnose the cause of Jessica’s fatigue and edema?
- How does her hypoproteinemia relate to her edema?
- How would dehydration influence blood volume, stroke volume, and cardiac output?
- What is atrial fibrillation, and how does it appear on an ECG?
- How might atrial fibrillation explain Anna’s fatigue?

A substance whose shape can easily change is a
a.
solid.
b.
powder.
c.
fluid.
d.
metal.


Please select the best answer from the choices provided

A
B
C
D

PLS HELP ASAP!!!!
in complete sentences compare in depth neutrophils, eosinophils and the basophils.
Compare their functions
Compare their structures
Compare how they look when they are stained
Compare their counts

Why does warm air always rise at a front?

Please help I’ll mark you as brainliest if correct

The moon's relative motion causes
A)
ocean tides.
B)
wind currents.
the phases of the Moon.
D)
the rotation of the Moon.

Will give brainliest

NO LINK SHARING OR U WILL BE REPORTED

After an initial infection of the measles virus, B-cells recognize the measles virus in your body. How is this helpful in human immune response? (SC.912. L.14.52)
ws
O The B-Cells transfer this recognition to T-cells, which will then devour the viruses
o The B-cells use this recognition to defend the body against the B-cells more quickly recognize and respond to any other virus that invades the body
O The B-Cells more quickly recognize the response to any other virus that invades the body
O The B-cells produce antibodies more quickly if the measles virus is encountered again

How does stimulus become a memory? stay safe god bless.

A. The capture/mark recapture method was used to give an accurate
estimate of the rhinoceros beetle population in the Western province. Traps
were set up and captured beetles were painted light brown as oppose to red an
yellow. All captured-recaptured were counted and recorded.
Total count
in
Total marked
Total counts
in
Total marked
40
40
15
35
Use the Lincoln Index to calculate the total beetle population?​

You are tasked with characterizing responses to Epidermal Growth Factor (EGF) treatment of HeLa Cells. You grow HeLa cells then replace the culture media with media containing EGF at various concentrations, then harvest samples for Western blot analysis using an anti-phospho-MAPK antibody as a readout of receptor tyrosine kinase activity. As expected, your control (EGF treated cells) show a strong phopho-MAPK signal on your Western blot. What do you hypothesize will happen if you pre-treat HeLa cells with siRNAs (RNAi) against Ras prior to adding EGF and performing Western blot analysis with anti-phospho-MAPK

According to the passage, which of the following topics of study was the most crucial to his final analysis?
The study of statistics and probabilities

The study of plant varieties

The study of agriculture

His study of the experimental method

Chemical Reactions in Life Quick Check
What is photosynthesis? (1 point)
o a chemical reaction plants use to release energy from food
O a chemical reaction plants use to create water
a chemical reaction plants use to create new atoms
o
a chemical reaction plants use to create food

CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION

dsadasd das sad afsasdasdsa?

IF A RED BIRD EATS IN A SPACE OF 500 FT AND A BLUE BIRD HUNTS WITHIN THIS 500 FT, BUT ONLY IN A SQUARE OF 100FT, WHAT MIGHT HAPPEN TO THE BLUE BIRDS POPULATION. IF THE RED BIRD EATS THE BERRIES IN THE 100FT SPACE.

The following statements refer to a comparison of reproduction in ferns vs. flowering plants. Indicate whether each statement is true or false by writing true or false in each blank. true Both ferns and flowering plants produce spores at some point in their life cycles. false Only ferns have a gametophyte as part of their life cycle. Only flowering plants produce pollen grains. true Both a tree and a large fern plant are diploid sporophytes.

Ashton is a crime scene investigator. He ensures that all the evidence gathered at the scene is properly handled and labeled. What is Ashton protecting?
Ashton ensures that the (blank) the documentation of who possesses evidence at all times, is protected by properly handling and labeling evidence.

How much has the greenhouse gas carbon dioxide increased in the air just in the last few years? ITS DUE IN A FEW HOURS PLEASE HELP!

Michael discovers that a fish breathes less often in cool water. He correctly hypothesizes that A. the fish slows down in cool water, and does not need as much oxygen. B. the fish is eating, and does not have time to breathe as much. C. the fish is sleeping, and does not need as much oxygen. D. there is less oxygen in cool water, so the fish breathes slowly.

the cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are the:

a: axons
b: soma
c: dendrites
d: synapses

The adenine of the start codon is located at the +1 position. Use the DNA Mutations Interactive to determine which statements describe missense mutations. a substitution of G to U at position +13 in the sense strand a transition at position +12 in the antisense strand a transversion of C in the sense strand of the histidine codon a G nucleotide is inserted after position +1 in the antisense strand a deletion of the A at position +7 in the antisense strand an insertion of A between positions +7 and +8 on the sense s

When comparing the brightness of stars, it is
necessary to know the distance to each star.
vole
True
False

12. The best plate to cultivate enteric bacteria is?
A. EMB
B. Blood agar
C. Mannitol salt
D. Sabouraud agar plate

13. The Ingredient in Hektoen plate which makes the agar selective is?
A. Salt
B. Glucose
C. Mannitol
D. Bile acids

14. The enteric plates are only allowing the growth of ?
A. Gram negative bacteria
B. Gram positive bacteria
C. Anaerobes

Help me please!!!!!!!!!!!!!!!!!

2. A hormone that is produced by the endocrine system targets specific
cells ir many different parts of the body. Which of the following
mechanisms explains the best way for the hormone to efficiently reach all
of its target cells?

The hormone is released into the bloodstream where it can be carried throughout the
body to the target cells with specific receptors

The hormone reacts with neurons close by that signal the target cells throughout the
body

The hormone is transported by local regulation to cells close by that trigger the target
cells

The hormones moves throughout all the cells until it reaches the cells with the
specific receptors for the signal

Hurry please I’m taking a exam

Tectonic plates often shift position by the force of liquid rock emerging from below the Earth’s surface and then cooling to form hard rock.

This most often occurs _____.

in selective breeding, the desirable traits are chosen.

a. true
b. false

(By CMI W Sunce Source
1. What organism is pictured?
2. Name and describe the process is shown on the right.
3. What is the name of the circular bodies? What happens there?

An ecosystem engineer can cause a cascade of effects including abiotic and biotic changes.
O True
False