Biology College

And here is another one, help meeeee HUHUHU, I'm exhausted (only for those who know the answer)

I need explanation for your answers, even though it's multiple choices, I still need your explanation for it.

DUE TOMORROW!

If your answer is NONSENSE it will be deleted as soon as possible!

But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!

Answers

Answer 1

Answer:

14. (a) Pb

15. (d) Al

16. (A) increases

Explanation:

14.

In the reactivity series of metals an element can displace another element from a compound if and only if it is not placed below that metal, as the reactivity of metals decreases when moving from top to bottom- if a metal is placed below Hydrogen it means that it is less reactive than Hydrogen and hence cannot displace Hydrogen from its compound.

All options except A are placed below Hydrogen in the reactivity series, so they wont displace Hydrogen from its compound, but option (a) that is Pb can do so as it is above Hydrogen in the reactivity series.

15.

Al is placed below Mg in the reactivity series and hence cannot displace Mg from its compound.

16.

The reactivity of metals increases down the GROUP.

[CAUTION :- We were talking 'bout REACTIVITY SERIES in the top 2 questions where reactivity decreases down the group, but we're talkin' 'bout GROUPS of the periodic table here, where reactivity increases down the group.]

The size of metals increases down the group causing their valence electrons to drift far from the nucleus so that they can be lost easily. The metals have a property of losing electrons so the more electrons it can lose more will be its reactivity.

Hence, reactivity increases down the group.

Related Questions

DNA is referred to as a_____,
meaning that it has_______
strands that are______together.

Answers

DNA is referred to as a double helix, meaning that is has two strands that are held together.

Answer:

double helix

two

wound

Explanation:

DNA is referred to as double helix, meaning it has two strands that are wound together.

Kevin's supervisor, Jill, has asked for an update on today's sales, Jill is pretty busy moving back and forth between different store locations. How can Kevin most effectively deliver an update to her ? a) Call with a quick update Ob ) Send a detailed text message c ) Book a one-hour meeting for tomorrow morning d) Send a detailed email

Answers

Answer:

d) Send a detailed email

Explanation:

Send a detailed email is the best way to deliver an update to her because in the email he can send all the information in detail form which can satisfy his owner. He can't call or message because it takes too much time to provide information so email is the best way to provide information. Booking a one-hour meeting is not worth it and the reason for this is that there is no big presentation which takes one hour of description one email is enough for it.

A woman who is a carrier for #1 hemophilia and a man that does not have the
condition have children. What is the probability that they will have a child
with the condition being studied? What is the gender of that child?

#2 In plants, inflated pea pods are dominant to constricted pea pods. Two pea pods both heterozygous for pod shape are crossed. What is the probability that they could produce constricted pea pods ?

#3 A woman that is heterozygous for Huntington's disease and a man that does not have the condition have children . What is the probability that their children inherit the Huntington's gene ?

#4 A woman that is heterozygous for type A blood and a man that is heterozygous for type B blood have children. What are the possible blood types of their children?

#5 Two people are both unknowingly carriers for the cystic fibrosis gene. What is the probability that they will have children with cystic fibrosis?

Answers

Answer:

Explanation:

if the baby gets the Y chromosome from the father it will be a boy. If the boy gets his mother's X chromosome with the hemophilia gene he will have hemophilia. If he inherits his mother's other X chromosome, he will have normal blood clotting. If the baby gets the X chromosome from the father it will be a girl.

#4 A woman that is heterozygous for type A blood and a man that is heterozygous for type B blood have children. What are the possible blood types of their children?

One parent with A and another with B can produce a child with A, B, AB or O blood types.

#5 Two people are both unknowingly carriers for the cystic fibrosis gene. What is the probability that they will have children with cystic fibrosis?

If both parents are carriers there is a 1 in 4 (25 percent) chance that both will pass on the non-functioning gene, which would result in a pregnancy affected with cystic fibrosis.

#3 A woman that is heterozygous for Huntington's disease and a man that does not have the condition have children . What is the probability that their children inherit the Huntington's gene ?

Huntington's disease (HD) is what is called a dominant genetic disease. What this usually means is that a child only has a chance of getting a disease like this if a parent has it too. But parents without HD can have a child with HD. This is true of any dominant genetic disease

Match each term with the best description.

a. Membrane-bound structure that supports energy production.
b. Semi-permeable, living covering of the cell.
c. Long, whip-like appendage used for locomotion.
d. Membrane-bound structure containing the hereditary material of the cell.
e. Gel-like substance encompassing the contents of the cell
f. Basic structural and functional unit of living orgaisms

1. Cell
2. Cell membrane
3. Cytoplasm
4. Flagellum
5. Mitochondrion
6. Nucleus

Answers

Answer:

a) 5. mitochondrion

b) 2. cell membrane

c) 4. flagellum

d) 6. nucleus

e) 3. cytoplasm

f) 1. cell

What is the reason for having diverse functions for proteins

Answers

Answer:

to make the body strong

New world monkeys have:______.
a. None of the above
b. have short legs and no tails to help them balance on top of the branches where they walk
c. have prehensile tails to aid in their 3-D movement through the trees
d. have broad and flat bodies with the scapula on the back of the ribcage, allowing a greater range of motion in the shoulder and for them to hold their arms above their heads.

Answers

Answer:

d num have broad and flat bodies

Answer:

C. have prehensile tails to aid in their 3-D movement through the trees

Explanation:Monkeys need tails to balance themselves when walking and jumping from tree to tree

plz give a correct answer for the question how do canine and molar differ

Answers

Answer:

Canines are the sharp, pointed teeth that sit next to the incisors and look like fangs. Dentists also call them cuspids or eyeteeth. Canines are the longest of all the teeth, and people use them to tear food

Molars are the flat teeth at the rear of the mouth. Each molar typically has four or five cusps. They are used exclusively for crushing and grinding. Wisdom teeth are also called third molars. They erupt from the age of 18 onwards but are often surgically removed.Their function is similar to that of the premolars, to grind, tear, and crush food. Molars have a large flat biting surface which makes them perfect for this job.

Explanation:

I want to know full answer about ecoregion vs. ecosystem.

Answers

Answer:

An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species. The biodiversity of flora, fauna and ecosystems that characterise an ecoregion tends to be distinct from that of other ecoregions. In theory, biodiversity or conservation ecoregions are relatively large areas of land or water where the probability of encountering different species and communities at any given point remains relatively constant, within an acceptable range of variation (largely undefined at this point).

A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature.

A map of North America's bioregions

Three caveats are appropriate for all bio-geographic mapping approaches. Firstly, no single bio-geographic framework is optimal for all taxa. Ecoregions reflect the best compromise for as many taxa as possible. Secondly, ecoregion boundaries rarely form abrupt edges; rather, ecotones and mosaic habitats bound them. Thirdly, most ecoregions contain habitats that differ from their assigned biome. Biogeographic provinces may originate due to various barriers, including physical (plate tectonics, topographic highs), climatic (latitudinal variation, seasonal range) and ocean chemical related (salinity, oxygen levels).

A student is conducting their science experiment on the effects of sugar on bullfrogs. He has 3 groups of test subjects. 1 group of frogs that receives nothing, they are the control group. The 2nd group of frogs receives half a sugar pill each, and the 3rd group receives a whole sugar pill each. He will measure their activity levels and jump heights after giving them the pills. When he is setting up his data table, what should go in the first column?

Answers

Answer:

Group 1 of frogs.

Explanation:

It is the first thing because you have to note which of the frogs you're talking about before you start.

ATP is considered as nature dehydrating agent.what does it means?show with the help of examples

Answers

Answer:

that man is mental

Jeremiah is an 10-year-old male who is short in stature. His parents have become concerned as Jeremiah is now wetting the bed, drinking a lot of water, and often appears tired/fatigued. The doctor orders several blood tests after Jeremiah's urine test was positive for glucose and ketones.1. What disease(s) should be ruled out in this patient?2. List the tests that are used to diagnose diabetes.3. List the symptoms of diabetes.

Answers

Answer: 2) Tests used to diagnoses diabetes: Oral Glucose Tolerance Test, Fasting Glucose Test, Hemaglobin A1c, Random Blood Suger Test.

3) unexplained weight loss, frequent unination, lethargic, excessive thirst, nausea , and vomititng, increased hunger even though is still eating, blurry vision, bed-wetting in childern who did not do it previously, dry mouth,

Explanation:

A student is conducting their science experiment on the effect of caffeine on dogs. He has 3 groups of test subjects. The 1st group of dogs receives plain water. The 2nd group of dogs receives 10 mg of caffeine each, and the 3rd group receives 50 mg of caffeine each. He will measure their activity levels by recording how long each dog runs without stopping, after giving them the pills. What is the dependent variable in this experiment?

Answers

Answer:

The amount of activity

Explanation:

In an experiment, the independent variable is the variable that the scientist/investigator purposely changes or manipulates, which isn't changed by other variables in the experiment (in this case, the amount of caffeine). On the other hand, the dependent variable is the variable that is being measured or tested during the experimental procedure (this variable is 'dependent' on the independent variable). Finally, the control group is defined as the group of individuals/subjects who do not receive the experimental treatment (in this case, the dogs that receive water).

Answer: The amount of activity.

Explanation:

hello guys, Define wave length.I think this will be easy for u guys good day thank u

Answers

Answer:

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Explanation:

Please tell me if it helps

What evidence would prevent scientists from classifying viruses as living organisms?

Answers

Viruses do not follow the properties of life. They can not reproduce, grow and do not go through homeostasis.

Answer:

The following evidences would prevent scientists from classifying viruses as living organisms:

1) They have subcellular or acellular (non-cellular) structure.

2) Do not respire or excrete.

3) Can be crystallized.

4) Can be stored as chemicals.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807Peace!

When making observations, you should provide a general description of the subject, rather than going into too much detail.

Answers

Answer:

yeah thats correct

Explanation:

is there any question?

that is true but also make sure you aren’t too broad. you want to be mildly specific but not to detail heavy

Which of the following describes a parasite
1 a bear that kills and eats fish?
2 a worm that lives inside a bear.
3 a dish that is killed and eaten.
4 a bear that has worms in its gut

Answers

Answer:

Explanation:

A parasite is an organism that feeds on the intestine of living organiy

The correct answer would be a worm that lives inside a bear! A parasite is something that lives inside a host and is receiving its food from the host — this being the bear! Safe learning :)

explain what perlemoen are?

Answers

Answer:

Also known as "abalone" which is a

Explanation:

Answer:

any of various edible marine gastropod mollusks of the genus Haliotis

Explanation:

hope this helps

The structure that hotds two chromosomes together until they separate for cett divisionois

1.chromatid .

2.cytoplasm .

3.chromatin .

4.centromere

Answers

The answer is 4. Centromere

Methylation _________of the transcriptional unit results in a __________reduction in luciferase expression, whereas methylation ________the unit causes a ________reduction in expression. The effect of methylation of the transcriptional unit may be_________ by methylation outside the unit.
A. enhanced
B. within
c. reduced
d. drastic small outside

I DONT HAVE THE ANSWER BUT GOOD LUCK

an apple and a glass of milk can give you more nutrition as compared to the milk shake
Prepared from apple and milk. Justify it based on the physiology of GIT.

in detail plz

Answers

Answer:

True

Explanation:

because the milk shake is with cold but milk is hot

Other Questions

57. Name three supranational organizations where the Peoples Republic of China is a member. The square of y varies directly as the cube of x.When x=4 y=2.Which equation can be used to find other combinations of x and y Which of the following could be the value of xy if y = 7and x>7? The term for an urban or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities is _________.a. urban sprawlb. urban heat island effectc. heat pollutiond. none of the above An equilateral triangle has a perimeter of 15x3 + 33x5 feet. What is the length of each side?x3 feet5 + 11x2 feet5x2 + 11 feet5x3 + 11x5 feet I will give a brainliest and 20pts to the person that can use the Pythagorean theorem to solve for x. Please help. I went over it several times and the answer I got doesn't match up with what the box says what statement best describes voting in the united states Which group represents external customers of an organization hlp pleassssssssssssssssssssss Which of the following sentences has a correct signal phrase for the book The Nasty Bits written by author Anthony Bourdain? Question 1 options: A) According to Anthony, Perhaps the best thing chefs can do is cook, whenever possible, with heart (40). B) In The Nasty Bits, chef Anthony Bourdain states, Perhaps the best thing chefs can do is cook, whenever possible, with heart (40). C) The Nasty Bits states, Perhaps the best thing chefs can do is cook, whenever possible, with heart (40). D) Perhaps the best thing chefs can do is cook, whenever possible, with heart (40). C. Examine the hourglasses (A), (B), and (C) andfind the best answer.6(A)(B).(C)6a) (B) shows the most time passed.b) (A) shows the most time passed.c) (C) shows the most time passed.d) (A), (B), and (C) show the same time passed.6 A store is advertising a new DVD player for $189.00. If the sales tax rate is 7.25 percent, x phng ha hon ton 66,6 gam hn hp 2 este HCOOC2H5 v CH3COOCH3 bng dung dch NaOH thu c hn hp X gm 2 ancol. un nng hn hp X vi H2SO4 c 140 C sau phn ng xy ra hon ton thu c m gam nc. Gi tr ca m Square inscribed in a circle with radius 16.Ill mark u as a brainliest!! Please solve the problem which number best completes the pattern ? 17,12,7 3,7,11 21,16(?) a. 12 b. 11 c. 8 d. 3 Consider the generic chemical equation: 2 A + 3 B ------> 3 CIf 6 moles of A and 2 moles of B are reacted, what is the maximum number of moles of C that can be formed? The half life for the decay of carbon-14 is 5.73 times 10^3 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 77.The activity in a similar-sized sample of fresh wood is measured to be 85.Calculate the age of the artifact. Round your answer to 2 significant digits. how do i solve this? Use the following graph to evaluate f(-5) and f(-1).