Question

does anyone need help with the semester exam for biology a?

Answer 1

i need the answers for the genetics unit test, essay questions.

Answer 2

ok

Answer 3

did u take the test?

Answer 4

yes

Answer 5

how did u do?

Answer 6

great! thank god

Answer 7

awsome!!

Answer 8

yeah! do you know the essay questions for the genitcis unit test? mine are being graded and i cant see them. for @bart15

Answer 9

let me check1

Answer 10

dang all yall got good teachers who say not to do stuff mine makes us do EVERYTHING!!! lol

Answer 11

are you in world history?

Answer 12

Yes i need helpppp.

Answer 13

yes

Answer 14

@emma151 have you done the portfolio?

Answer 15

Question, what you inboxed me, are those awnsers ALL right?

Answer 16

Okay thanks!(:

Answer 17

my teacher sciped it

Answer 18

omg you have all the good teachers! what state are you in?

Answer 19

indiana lol u?

Answer 20

lol! :)

Answer 21

Im in Indiana toooo woe. xD

Answer 22

awsome!!

Answer 23

I messaged a question I had to you lovebug86

Answer 24

@taymo27 do you have world history?

Answer 25

Yes i have world history A.

Answer 26

did you have to do the portfolio

Answer 27

hmmm. i forget. What was the portfolio about?

Answer 28

do you have the Unit 5 The Early Modern World - Part II test answers? @taymo27

Answer 29

@emma151 noope. im sorry ):

Answer 30

its ok

Answer 31

@taymo27 do u take english 9?

Answer 32

@emma151 Yes. i take English 9 A.

Answer 33

Do u have the unit 5 Crossing Borders test answers?

Answer 34

@emma151 I toke it but i dont have the awnsers anymore. Idk how tio pull them up again.

Answer 35

ok

Answer 36

and the portfolio is like pick a person and write how they helped thier empire and stuff like that

Answer 37

Yes mam i did that. @lovebug86

Answer 38

Does any one need the Algebra 1 Systems of Equations and Inequalities Unit Test??? bc i have it!!!

Answer 39

FYI......your Connections teachers check this site for copied answers.

Answer 40

I did not say i was going to give it to them!

Answer 41

@connectionsteacher me either. i just like seeing who is all on connections and where they live and help people out some

Answer 42

I have already noted your answers that were posted.

Answer 43

what do you mean i didnt post answers?

Answer 44

How can you note an answer if none were posted @connectionsteacher

Answer 45

@lovebug can you inbox me the awnsers please

Answer 46

1. Science differs from other disciplines, such as history and the arts, because science relies on ___________ . (1 point)
Unselected answer (0 pts) facts
Correct answer (1 pt) testing explanations
Unselected answer (0 pts) observations
Unselected answer (0 pts) theories
1 /1 point
2. A scientific hypothesis ___________. (1 point)
Unselected answer (0 pts) can be based on personal beliefs or opinions
Correct answer (1 pt) can be tested by experiments or observations
Unselected answer (0 pts) does not have to be tested to be accepted as correct
Unselected answer (0 pts) is a proven fact with much evidence to support it
1 /1 point
3. How does studying science help you be a better member of society? (1 point)
Unselected answer (0 pts) Learning the biases of science will help you know what is right or wrong.
Correct answer (1 pt) Understanding how science works will help you make better decisions.
Unselected answer (0 pts) Memorizing science facts will help you become more intelligent.
Unselected answer (0 pts) Knowing science will help you live without the aid of technology.
1 /1 point
4. Which of the following describes a neutral atom of oxygen?


Periodic Table Graphic (1 point)
Unselected answer (0 pts) 6 protons, 6 neutrons, 6 electrons
Unselected answer (0 pts) 6 protons, 6 neutrons, 8 electrons
Unselected answer (0 pts) 8 protons, 8 neutrons, 10 electrons
Correct answer (1 pt) 8 protons, 8 neutrons, 8 electrons
1 /1 point
5. Hershey and Chase used the 35S isotope to label proteins. How does this isotope differ from the 32S isotope found in greatest natural abundance, and why did they choose 35S instead of 32S? (1 point)
Unselected answer (0 pts) 35S has more protons than 32S; Hershey and Chase used it because it has a greater mass.
Incorrect Answer (0 pts) 35S has fewer protons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced.
Unselected answer (1 pt) 35S has more neutrons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced.
Unselected answer (0 pts) 35S has fewer neutrons than 32S; Hershey and Chase used it because it has a smaller mass.
0 /1 point
6. Rank the following in order from most acidic to least acidic.

sample pH
bleach 12.5
coffee 4.2
rainwater 5.4
soap 10.1
(1 point)
Unselected answer (0 pts) rainwater, coffee, bleach, soap
Correct answer (1 pt) coffee, rainwater, soap, bleach
Unselected answer (0 pts) soap, bleach, coffee, rainwater
Unselected answer (0 pts) bleach, soap, rainwater, coffee
1 /1 point
7. Which of the following are true concerning living things? Check all that apply. (2 points)
Unselected answer (0 pts) They contain a vital force absent in nonliving things.
Partially correct answer (1 pt) They are composed of molecules that contain carbon-carbon bonds.
Partially correct answer (1 pt) They undergo chemical reactions to use energy they acquire from the environment.
Unselected answer (0 pts) They do not require catalysts to sustain their living state.
2 /2 points
8. Which of the following pairs does not fit the pattern shown by the other pairs? (1 point)
Unselected answer (0 pts) amino acids, protein
Correct answer (1 pt) fatty acids, DNA
Unselected answer (0 pts) glucose, starch
Unselected answer (0 pts) ribonucleotide, RNA
1 /1 point
9. What goes in Box 5 of the food web in Figure 3–2?

Figure 3-2 food web
(1 point)
Unselected answer (0 pts) herbivores
Unselected answer (0 pts) scavengers
Unselected answer (0 pts) carnivores
Correct answer (1 pt) decomposers
1 /1 point
10. Matter can recycle through the biosphere because ___________. (1 point)
Unselected answer (0 pts) matter does not change into new compounds
Unselected answer (0 pts) matter is assembled into chemical compounds
Correct answer (1 pt) biological systems do not use up matter, they transform it
Unselected answer (0 pts) biological systems use only carbon, oxygen, hydrogen, and nitrogen
1 /1 point
11. Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the rest is ___________. (1 point)
Unselected answer (0 pts) used in reproduction
Unselected answer (0 pts) stored as body tissue
Unselected answer (0 pts) stored as fat
Correct answer (1 pt) eliminated as heat
1 /1 point
12. How does an area’s weather differ from the area’s climate? (1 point)
Unselected answer (0 pts) Weather involves temperature and precipitation, and climate involves only temperature.
Unselected answer (0 pts) An area’s weather depends on where it is located on Earth, and the area’s climate does not.
Unselected answer (0 pts) An area’s weather does not change very much, and an area’s climate changes many times.
Correct answer (1 pt) Weather is an area’s day-to-day conditions, and climate is an area’s average conditions.
1 /1 point
13. Which of the following pairs interacts with one another in a competitive manner? (1 point)
Unselected answer (0 pts) a bird and the snake that preys on the bird’s eggs
Unselected answer (0 pts) a bird and the mite that lives on the bird’s body
Unselected answer (0 pts) two birds of the same or different species living in different areas
Correct answer (1 pt) two birds of the same or different species living in the same area
1 /1 point
14. Which aquatic ecosystem is likely to be the warmest? (1 point)
Unselected answer (0 pts) a benthic system in the middle of the ocean
Unselected answer (0 pts) an open ocean system near Antarctica
Correct answer (1 pt) a coastal ocean system at a temperate latitude
Unselected answer (0 pts) an intertidal zone in a polar region
1 /1 point
15. As resources in a population become less available, the population ___________. (1 point)
Unselected answer (0 pts) declines rapidly.
Unselected answer (0 pts) increases slowly.
Correct answer (1 pt) reaches carrying capacity.
Unselected answer (0 pts) enters a phase of exponential growth.
1 /1 point
16. Sea otters live in the ocean. Which of the following is not likely to be a limiting factor on the sea otter population? (1 point)
Unselected answer (0 pts) disease
Unselected answer (0 pts) competition
Correct answer (1 pt) drought
Unselected answer (0 pts) predation
1 /1 point
17. Ideally, sustainable development should ___________. (1 point)
Unselected answer (0 pts) put the protection of the environment ahead of human needs
Unselected answer (0 pts) provide for human needs at the expense of the environment
Unselected answer (0 pts) use more natural resources to make goods to meet human needs
Correct answer (1 pt) preserve ecosystems while providing for human needs
1 /1 point
18. Which organelles are involved in energy conversion? (1 point)
Correct answer (1 pt) mitochondria and chloroplasts
Unselected answer (0 pts) mitochondria and ribosomes
Unselected answer (0 pts) smooth and rough endoplasmic reticulum
Unselected answer (0 pts) Golgi apparatus and chloroplasts
1 /1 point
19. Introduced species can threaten biodiversity because they ___________. (1 point)
Unselected answer (0 pts) cause desertification
Unselected answer (0 pts) cause biological magnification
Correct answer (1 pt) crowd out native species
Unselected answer (0 pts) reduce the amount of fertile land
1 /1 point
20. What happens if you place human red blood cells in a concentrated salt solution? (1 point)
Correct answer (1 pt) They shrink as water moves from inside to outside the cells as a result of osmosis.
Unselected answer (0 pts) They burst as water moves from outside to inside the cells as a result of osmosis.
Unselected answer (0 pts) No change occurs as water freely diffuses back and forth across the cell membranes.
Unselected answer (0 pts) The cells expend energy pumping water out in response to the greater external salt concentration.
1 /1 point
21. What happens during photosynthesis? (1 point)
Unselected answer (0 pts) Heterotrophs consume ATP.
Unselected answer (0 pts) Heterotrophs produce ATP.
Unselected answer (0 pts) Autotrophs consume carbohydrates.
Correct answer (1 pt) Autotrophs produce carbohydrates.
1 /1 point
22. Which chemical shown in Figure 8–3 is an electron carrier molecule?

figure 8-3 light reactions
(1 point)
Unselected answer (0 pts) H2O
Unselected answer (0 pts) carbon dioxide
Correct answer (1 pt) NADP+
Unselected answer (0 pts) oxygen
1 /1 point
23. Which of the following is not a step in the light-dependent reactions? (1 point)
Unselected answer (0 pts) High-energy electrons move through the electron transport chain.
Unselected answer (0 pts) Pigments in photosystem II absorb light.
Unselected answer (0 pts) ATP synthase allows H+ ions to pass through the thylakoid membrane.
Correct answer (1 pt) ATP and NADPH are used to produce high-energy sugars.
1 /1 point
24. Cellular respiration releases energy by breaking down ____________. (1 point)
Correct answer (1 pt) food molecules
Unselected answer (0 pts) ATP
Unselected answer (0 pts) carbon dioxide
Unselected answer (0 pts) water
1 /1 point
25. What are the reactants in the equation for cellular respiration? (1 point)
Unselected answer (0 pts) oxygen and lactic acid
Unselected answer (0 pts) carbon dioxide and water
Correct answer (1 pt) glucose and oxygen
Unselected answer (0 pts) water and glucose
1 /1 point
26. How do aerobic and anaerobic respiration differ? (1 point)
Unselected answer (0 pts) More energy is released from a glucose molecule during anaerobic respiration than during aerobic respiration.
Unselected answer (0 pts) Anaerobic respiration but not aerobic respiration occurs in human cells.
Unselected answer (0 pts) Anaerobic respiration requires oxygen while aerobic respiration does not.
Correct answer (1 pt) Anaerobic respiration evolved first; aerobic respiration evolved after photosynthetic organisms began producing oxygen.
1 /1 point
27. Which of the following happens when a cell divides? (1 point)
Unselected answer (0 pts) The cell’s volume increases.
Unselected answer (0 pts) It becomes more difficult for the cell to get rid of wastes.
Correct answer (1 pt) Each daughter cell receives its own copy of the parent cell’s DNA.
Unselected answer (0 pts) It becomes more difficult for the cell to get enough oxygen and nutrients.
1 /1 point
28. During normal mitotic cell division, a parent cell that has four chromosomes will produce two daughter cells, each containing ____________. (1 point)
Unselected answer (0 pts) two chromosomes
Correct answer (1 pt) four chromosomes
Unselected answer (0 pts) eight chromosomes
Unselected answer (0 pts) sixteen chromosomes
1 /1 point
29. What does mechanical digestion in the stomach involve? (1 point)
Unselected answer (0 pts) absorption of nutrients by villi
Unselected answer (0 pts) pepsin and bile
Correct answer (1 pt) smooth muscle contractions
Unselected answer (0 pts) bile and pancreatic fluid
1 /1 point
30. Which division of the nervous system speeds up your heart rate? (1 point)
Unselected answer (0 pts) somatic
Correct answer (1 pt) autonomic
Unselected answer (0 pts) sensory
Unselected answer (0 pts) brain and spinal cord
1 /1 point
31. For a person who writes with his or her left hand, the muscles involved in writing are controlled by (1 point)
Unselected answer (0 pts) the left hemisphere of the cerebrum.
Correct answer (1 pt) the right hemisphere of the cerebrum.
Unselected answer (0 pts) both the left and right hemispheres of the cerebrum.
Unselected answer (0 pts) neither hemisphere of the cerebrum.
1 /1 point
32. What happens when ATP supplies energy for thin filaments in a muscle fiber to slide over the thick filaments? (1 point)
Correct answer (1 pt) The muscle contracts.
Unselected answer (0 pts) The muscle relaxes.
Unselected answer (0 pts) The muscle both contracts and relaxes.
Unselected answer (0 pts) The muscle neither contracts nor relaxes.
1 /1 point
33. Hair would be dry and brittle without the presence of (1 point)
Unselected answer (1 pt) sebaceous glands.
Incorrect Answer (0 pts) keratin.
Unselected answer (0 pts) melanin.
Unselected answer (0 pts) fat.
0 /1 point
34. Compared with the walls of arteries, the walls of capillaries (1 point)
Unselected answer (0 pts) are thicker.
Correct answer (1 pt) are thinner.
Unselected answer (0 pts) lack valves.
Unselected answer (0 pts) have more resistance.
1 /1 point
35. What could happen if the epiglottis fails to close correctly over the trachea when a person swallows? (1 point)
Unselected answer (0 pts) The person may experience heartburn.
Correct answer (1 pt) The person may choke.
Unselected answer (0 pts) The person will experience a heart attack.
Unselected answer (0 pts) The person will get swollen lymph nodes.
1 /1 point
36. Which hormone is largely responsible for women having wider hips than men? (1 point)
Unselected answer (0 pts) testosterone
Correct answer (1 pt) estrogen
Unselected answer (0 pts) progesterone
Unselected answer (0 pts) FSH
1 /1 point
female reproductive organs
37. What is occurring in step 1 in Figure 34–3? (1 point)
Unselected answer (0 pts) fertilization
Unselected answer (0 pts) formation of a zygote
Correct answer (1 pt) ovulation
Unselected answer (0 pts) formation of a blastocyst
1 /1 point
38. If a person has memory B cells against a certain pathogen, the person is (1 point)
Unselected answer (0 pts) likely to develop that disease.
Correct answer (1 pt) much less likely to develop the disease a second time.
Unselected answer (0 pts) able to spread the disease to others through physical contact.
Unselected answer (0 pts) probably still sick with the disease.
1 /1 point
immune response diagram
39. What type of immune response is shown in Figure 35–2? (1 point)
Unselected answer (0 pts) nonspecific response
Unselected answer (0 pts) humoral response
Correct answer (1 pt) cell-mediated response
Unselected answer (0 pts) inflammatory response
1 /1 point
Fill in the Blank
40. The body needs ___________________ in only small amounts, but these organic molecules are an important part in helping perform cellular reactions. (1 point)
(1 pt) vitamins
Incorrect answer (0 pts) enzymes
0 /1 point
41. When a person loses consciousness due to a head injury from a car crash, the ____________________ keeps the body functioning by regulating the flow of information between the brain and the rest of the body. (1 point)
Correct answer (1 pt) brain stem
1 /1 point
42. A person with darker skin produces more ____________________ than a person with lighter skin. (1 point)
(1 pt) melanin
Incorrect answer (0 pts) melonin
1 /1 point
43. ____________________ are chemical messengers that allow an organ to send signals to another distant organ in the body through the blood. (1 point)
(1 pt) Hormones
Incorrect answer (0 pts) hormone
1 /1 point
44. When your body is infected with the cold virus, antibodies tag the pathogen’s ____________________, which are found on their outer surface, for destruction by immune cells. (1 point)
Correct answer (1 pt) antigens
1 /1 point

Answer 47

do you have biology b exam answers, and english 9b