12. Which is NOT a natural cause of extinction?
A. Disease
B. Catastrophic events
C. Introduction of new species
D. Competition due to overpopulation

24. Which is NOT true about energy transformation?
A. Energy is essential to all organisms.
B. Food contains energy that is needed by all organism.
C. Heterotrophs feed on autotrophs and other heterotrophs to gain energy.
D. Autotrophs do not need energy because they can produce their own food.

23. Which is the CORRECT sequence of events in cellular respiration?
A. Glycolysis - fermentation - Krebs Cycle
B. Glycolysis - Krebs Cycle - Electron Transport
C. Krebs Cycle - Electron Transport - Glycolysis
D. Krebs Cycle - Glycolysis - Electron Transport

2. In humans there are four types of blood; type A, type B, type AB and type O. A person with a genotype of IaIa or Iai will have blood type_____?
A. A
B. B
C. O
D. AB

4. A couple has four children, one son and three daughters. What is the chance that the fifth child will be a daughter?
A. ¼
B. ½
C. ¾
D. 1/5

22. Cellular respiration releases energy by breaking down_______.
A. ATP
B. water
C. carbon dioxide
D. food molecules

5. A man is colorblind but there is no history of this disorder in his wife’s family. What is the chance that their son is color
blind?

A. 0
B. 25%
C. 75%
D. 100%

25. Which BEST summarizes the process of respiration?

A. Water + Carbon Dioxide ( light) sugar + oxygen
B. Sugar + Oxygen (enzymes) water+ carbon dioxide +energy
C. Water + Sugar ( light ) carbon dioxide + oxygen
D. Oxygen + Water (enzymes) sugar + carbon dioxide + energy

1. A father with blood type AB and a mother with blood type O will probably produce offspring with a blood type ___. *
A. A
B. B
C. A or B
D.AB or O

6. What is a sex- linked trait that results in the inability to have normal blood clotting?
A. baldness
B. color blindness
C. diabetes
D. hemophilia

11. What causes species extinction?
A. Pollution and reforestation
B. Reforestation and carbon emission
C. climate change and over consumption
D. conservation and consume

18. The pigment molecules responsible for photosynthesis are located in the _______? *

A. Mitochondria
B. Cytoplasm of the cell
C. Stroma of the chloroplasts
D. Thylakoid membrane of the chloroplasts

13. Which part of a leaf contains most of the chloroplasts?

A. Lower epidermis
B. Palisade mesophyll
C. Spongy mesophyll
D. Upper epidermis

19. At optimum light intensity, which atmospheric gas most directly influences the rate of photosynthesis?
A. Nitrogen
B. Oxygen
C. Sulfur
D. Carbon Dioxide

14. What part of the leaf is this tiny opening in the lower epidermis which makes it rough and responsible for the entrance and exit of gases in plants?

A. xylem
B. phloem
C. stomata
D. guard cells
16. In which part of the chloroplast does light reactions of photosynthesis takes place?

A. Grana
B. Stroma
C. Inner membrane
D. Outer membrane

17. Which is NOT needed to make food in plants?
A. Flower
B. Sunlight
C. Chlorophyll
D. Carbon Dioxid

8. Color-blindness is inherited as a sex-linked recessive trait. If a normal woman, carrier of the gene marries a man with normal color vision. What would be the expected phenotype of their children with reference to color-blindness?
A. All color-blind
B. 2 carriers, 2 color-blind
C. 1 normal, 3 carriers
D. 2 normal, 1 carrier, 1 color-blind

3. Blood type O has both antibodies A and antibodies B in the plasma but has no antigen on its erythrocytes or red blood cells. That is why Blood Type O is considered UNIVERSAL______.
A. Blood
B. Donor
C. Marker
D. Recipient

7. Melvin’s thinning hair is like that of his father. This characteristic of baldness is due to
A. multiple alleles
B. sex-linked
C. sex-influenced
D. sex-limited​​

Answer:

12.B

17. A

11. C

13. B

16. A

7. B

8. B

19. D

23. B

How many pairs of spinal nerves are there in the human body?

what cells are the stem cells for spermatogenesis?

true or false. sequence read 2 is identical to the reference genome.

Someone plz help me :(

Where is the light energy from sunlight stored in photosynthesis?

air from the nasal cavity enters the superior portion of the pharynx called the

A mother has type O blood and a father is heterozygous for type B blood. What are the chances of the offspring having type O blood?

NEED HELP NOW PLEASE

What is the difference between a species and a population?

What is the primary purpose of a human community?

why would an ecosystem with only a few different types of organisms have a less complex food web than an ecosystem with many different of organisms

In which process are glucose and oxygen the reactants?


cellular respiration


photosynthesis


ATP production


ADP production

experiments with isotopes used as tracers showed that some fungi _____.

suggest a reason why termites have no eyes

What organism belongs to the Prokaryotic domain of life and it comes in three different
shapes, such as cocci, rod, and spiral?

what do you know about industrialization

10. A battery-operated alarm
clock waking you up in the
morning. What type of energy is this?

6. As the lunar cycle progresses from the full moon to new moon the light will appear to _________.

7. The “growing light” that appears during the first half of the lunar cycle is referred to as __________.

8. The ___________ phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.

9. In a crescent stage __________ than half of the Moon appears illuminated and during a gibbous stage __________ than half appears illuminated.

-I know this is asking for a lot but I really don’t know-
-I need the answers asap!-
-thanks in advance!-

A microbiologist identifies a bacterium that is capable of degrading cellulose, lignin, chitin, latex, aromatic chemicals, and keratin. It produces metabolic byproducts that give soil a musty smell as well as some that can be used as antibiotics. Which of the following genera is being described?
a. Campylobacter.
b. Streptomyces.
c. Neisseria.
d. Pseudomonas.

A good way to avoid bias when collecting samples is to ___.
a. collect a small sample number
b. use many different types of variables
c. use three different types of variables
d. collect a large sample number

Which of the following statements is TRUE if Joel and Karen are doing exactly the same things, but Joel has a higher metabolic rate than Karen?

the green pigment that traps the energy of sunlight for photosynthesis is

Which of the following molecules is broken down in cellular respiration, providing fuel for the cell?.

why can a student see her reflection on a computer moniter when the monitor is turned off

_________ is the study of the means by which living organisms both obtain and utilize the nutrients they need to grow and sustain life.

Inside an active mitochondrion, most electrons follow which pathway?.

predict what would happen if the lac repressor were altered so it could not release lactose once lactose was bound to it.

What is paresthesia?

What must a student do to obtain a volume of 12.5 milliliters of liquid in the graduated cylinder shown in the diagram below?

A
Add 0.5 mL of liquid.
B.
Add 1.5 mL of liquid.
C
Remove 0.5 mL of liquid.
D
Remove 1.5 mL of liquid.

why are carbon atoms important in organic molecules