PLEASE ANSWER A, B AND C THANK YOU!During an investigation into muscle strength, a group of students planned to compare their bicep muscles. Each student planned to lift a variety of masses, until they found the largest mass that they could lift. The masses were 5, 10, 15, 20 and 25 kg. The students would then plot a graph of their results.
a) Suggest how the students could improve the reliability of the investigation.

b) Suggest how the students could improve the accuracy of the investigation.

c) The teacher told the students that their investigation was too dangerous. Suggest why.

Answers

Answer 1

Answer:

Answer:

A) They could re-test the largest mass they could lift and see if the results are accurate.

B) They test it everyday and test if it is the average they can lift daily, instead of just one time or a couple times in one day.

C) They might lift to much , because they don't know how much they can lift at once. They might over lift and hurt themselves. There are many more ways they could hurt themselves , but that is one example.

Hope this helps :)

Answer 2

Answer: The answer is B because they only wanted results

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If an animals had three hearts chambers and it lays eggs it should be a _____.
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Show two methods of factoring ax - bx - ay + by

Answers

Way #1: ax - bx - ay + by = a(x-y) - b(x-y) = (a-b)(x-y)
Way #2: ax - bx - ay + by = x(a-b) - y(a-b) = (x-y)(a-b)

Through an uplift under the Earth's crust at a divergent boundary a __________ is formed.

Answers

Through an uplift under the Earth's crust at a divergent boundary a PLATEAU is formed

Answer:

Explanation:

Got it right

Can you put these cats in the right order (from Largest to Smallest) according to their actual real-life size?

Answers

Answer: ADCB

Explanation: I did a few tries to find out the answer to this. It turns out it was this one! Your welcome for the answer! :)

Answer:

I would say it goes something like this: Siberian Cat, British Shorthair, Turkish Van, and then Ragdoll Cats.

Explanation:

Siberian Cat Length - 17 to 25 inches, up to 25 lbs

British Shorthair Length- 22 to 25 inches, about 17 lbs

Turkish Van Length- I could not find the exact length, but they weigh less than the British Shorthairs, which are at 17 lbs, while the Turkish Vans weigh in at about 12-14 lbs.

Ragdoll Cat Length- Also could not find length, but they weigh about 8-15 lbs.

I hope this somewhat helps. Have a great day!

In pea plants, purple flowers are dominant over white flowers. Which of the following crosses would create an offspring population with all white flowers?two hybrid plants
two homozygous recessive plants
homozygous dominant plant with a hybrid plant
homozygous recessive plant with a hybrid plant

-------------------

Choose all the answers that apply.

In some plants, pink flowers are dominant over yellow flowers. If Marlo crosses two hybrids _____.
the ratio of pink to yellow flowers will be 3:1
50 percent of the offspring will be hybrids
none of the offspring will have yellow flowers
three-fourths of the offspring will have the same phenotype
half of the offspring will be homozygous for flower color

Answers

Answer:

A) option B, two homozygous recessive plants is correct

B) A, B, D and E is correct

Explanation:

A) Given purple flowers are dominant over white flowers

Let P represents allele for purple color of flower while p represents white color of flower.

In order to create all white offspring from a cross, the parents must have homozygous recessive genotype i.e pp

Hence, option B, two homozygous recessive plants is correct.

B) Given pink flowers are dominant over yellow flowers. Let “Y” represents allele for pink flower and “y” represent allele for yellow flower

If two hybrid parents with genotype “Yy” are crossed, then following offspring will b eproduced –

Yy * Yy

YY, Yy, Yy, yy

Out of four , two are hybrid offspring, three genotype i.e YY, Yy, Yy have the same genotype and both YY and yy are homozygous for flower color,

Hence, option A, B, D and E is correct.

The cross with two homozygous recessive plants would produce a population of all white flowers.

In some plants, pink flowers are dominant over yellow flowers. If Marlo crosses two hybrids:
the ratio of pink to yellow flowers will be 3:1
50% of the offspring will be hybrids
3/4 of the offspring will have the same phenotype
1/2 the offspring will be homozygous for flower colour

A population of prairie dogs lives at the edge of a meadow.Which TWO characteristics make this group of prairie dogs a population?
A. They have the same parents.
B. They belong to the same species.
C. They live in the same area.
D. They have the exact same genes.

Answers

Answer:

B. They belong to the same species and C. They live in the same area.

Explanation:

This is an educated guess. If you think about it, if there was a population of humansss, we dont have the same parents nor the exact genes so to only two that make sense is those to （＾ω＾）

Answer:

B. and C.

Explanation:

What is immunity?
That is my question

Answers

Answer:

In biology, immunity is the balanced state of multicellular organisms having adequate biological defenses to fight infection, disease, or other unwanted biological invasion, while having adequate tolerance to avoid allergy, and autoimmune diseases.

the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.

Passive immunity is provided when a person is given antibodies to a disease rather than producing them through his or her own immune system.

A newborn baby acquires passive immunity from its mother through the placenta. A person can also get passive immunity through antibody-containing blood products such as immune globulin, which may be given when immediate protection from a specific disease is needed. This is the major advantage to passive immunity; protection is immediate, whereas active immunity takes time (usually several weeks) to develop.

However, passive immunity lasts only for a few weeks or months. Only active immunity is long-lasting.

Active immunity results when exposure to a disease organism triggers the immune system to produce antibodies to that disease. Exposure to the disease organism can occur through infection with the actual disease (resulting in natural immunity), or introduction of a killed or weakened form of the disease organism through vaccination (vaccine-induced immunity). Either way, if an immune person comes into contact with that disease in the future, their immune system will recognize it and immediately produce the antibodies needed to fight it.

Active immunity is long-lasting, and sometimes life-long.

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