BIOLOGY MIDDLE SCHOOL

1.circle the letter of the protein that is not normal in people with sickle-cell diseaseA.MUCUS B. HEMOGLOBIN C.RED BLOOD CELLS D.CLOTTING PROTEIN

Answers

Answer 1
Answer: B. HEMOGLOBIN. In sickle cell anemia, the hemoglobin is mutated or abnormal and it gives the red blood cells a crescent shape. This abnormal hemoglobin is referred to as hemoglobin S.

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Name 3 professional areas in the U.S. that use the metric system

Answers

Answer;

-the scientific fields, medical fields, or technical fields

Explanation;

-There are two main systems of measurement in the world: the Metric system and the US standard system.

-The Metric (or Decimal) system is made of units based on powers of 10. To convert units, one needs to move the decimal point.The prefix (beginning part of the word- i.e. kilo or milli) describes the size of the given unit.

Final answer:

Three professional areas in the U.S. that use the metric system are science and scientific research, manufacturing and engineering, and medical and healthcare.

Explanation:

Three professional areas in the U.S. that use the metric system are:

  1. Science and Scientific Research: Scientists and researchers in fields such as chemistry, physics, and biology use the metric system extensively for accurate and standardized measurements.
  2. Manufacturing and Engineering: Industries involved in manufacturing and engineering, including automotive, aerospace, and machinery, use the metric system to ensure consistency and compatibility in their products.
  3. Medical and Healthcare: In the medical field, healthcare professionals use the metric system for measurements of weight, height, dosage, and other medical calculations.

Learn more about metric system here:

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How does a hydrometer work?

Answers

A hydrometer is an instrument that measures the specific gravity (relative density) of liquids. The ratio of the density of the liquid to the density of water. A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float

If the relationship between the manipulated variable and the responding variable is a direct proportion, what will a line graph of this relationship look like?A) a straight line
B) a curved line
C) a jagged line
D) none of the above

Answers

I think B. A curved love is the answer.
Th answer is B, a straight line

What is a cyclical disturbance?a. a disturbance that removes organisms
b. a disturbance that repeats over and over
c. a disturbance that kills keystone species
d.a disturbance that destroys soil

Answers

Answer:

The correct answer is option B.

Explanation:

A disturbance is a short term change in environmental conditions that causes a noticeable alteration in an ecosystem. If this change repeats itself over and over it is characterized as Cyclic disturbance.

This change or disturbance takes place because of several disturbance forces and in the absence of these forces ecosystem tends to return to conditions as it was pre-disturbance conditions.

Thus, the correct answer is option B.

A disturbance that repeats over and over

What occurs during sexual reproduction​

Answers

Explanation:

Asexual reproduction occurs by cell division during mitosis to produce two or more genetically identical offspring. Sexual reproduction occurs by the release of haploid gametes (e.g., sperm and egg cells) that fuse to produce a zygote with genetic characteristics contributed by both of the parent organisms.

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Exocytosis and endocytosis are ways that cells ________take in and release materials.A. actively
B. passively

Answers

Answer:

The answer to this question is Letter A
I would say it’s actively A.
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