BIOLOGY HIGH SCHOOL

Which of the following would not be a contributing factor to the life span of goldfish in a backyard pond?a. the pH level of the pond water.
b. the size of the goldfish
c. the food source availability in the pond
d. the temperature of the pond water

Answers

Answer 1
Answer: The option that would not be a contributing factor to the life span of goldfish in a backyard pond is B. the size of the goldfish. I don't see how their size would affect the life span of a fish, whereas the pH levels, the food availability, as well as the water temperature can either increase or decrease how much these fish can live.
Answer 2
Answer: b. the size of the gold fish

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The events of fertilization must occur in a specific sequence because it is a highly ordered process. Demonstrate your understanding of the proper event order by identifying the correct numerical order for these statements. Put the correct number on the blank in front of each statement. _____Semen is ejaculated into the vagina.
_____Prostate gland adds a fluid that protects the sperm.
_____Cell membrane changes electrical characteristics, causing cortical reaction.
_____Sperm migrate through cervix and into uterus.
_____Bulbourethral glands add a fluid that protect sperm from acidic conditions in the urethra.
_____Male and female chromosomes congregate, restoring the diploid (2n) number.
_____Seminal vesicles add a fluid that provides a source of energy for active sperm.
_____Acrosome releases enzymes that break down outer layer of egg’s membrane.
_____Muscles at the base of the bladder contract, forcing semen through the urethra.
_____Sperm is produced in the testes and stored in the epididymis.
_____Sperm encounter oocyte in oviduct (fallopian tube).
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Answers

Answer:

The correct sequence would be:

__1__Sperm is produced in the testes and stored in the epididymis.

__2__Sperm travel through the vas deferens to the seminal vesicles.

__3_Seminal vesicles add a fluid that provides a source of energy for active sperm.

__4__Bulbourethral glands add a fluid that protect sperm from acidic conditions in the urethra.

__5__Prostate gland adds a fluid that protects the sperm.

__6__Muscles at the base of the bladder contract, forcing semen through the urethra.

__7__Semen is ejaculated into the vagina.

__8__Sperm migrate through cervix and into uterus.

__9__Sperm encounter oocyte in oviduct (fallopian tube).

__10_Acrosome releases enzymes that break down outer layer of egg’s membrane.

__11_Cell membrane changes electrical characteristics, causing cortical reaction.

__12_Male and female chromosomes congregate, restoring the diploid (2n) number.

Fertilization is the process by which gametes of the male and female fuse with each other to form a zygote. In humans, it takes place inside the female body.

The events can be categorized as:

Pre-fertilization events: Sperm (or semen) in male and egg in the female is produced in testes (in males) and ovary (if females) respectively. Accessory glands such as seminal vesicle, bulbourethral, and prostate glands help in the formation of sperm in males.

Coitus: During this semen from a male is ejaculated into the vagina of a female with the help of erectile penis.

The semen then passes through the cervix to reach the uterus.

Fertilization: Four events take place to cause successful fertilization; sperm preparation (capacitation followed by acrosomal reaction), binding, a fusion of plasma membranes of sperm and egg, cortical reaction and activation of the egg.

Post-fertilization events: The zygote undergoes cleavage process to mature into an embryo.

Which is true about the light-independent reactions?A. Energy-rich carbohydrates are all used up, allowing none to leave the cycle.
B. No carbon dioxide because it was used up in the light-dependent reactions.
C. Energy taken from ATP and NADPH is used to make energy-rich carbohydrates.
D. Carbon dioxide is broken off of molecules with three carbons.

Answers

Light dependent reactions convert ADP into ATP, produce oxygen gas, and convert NADP+ into NADPH. Hope this helps!

Which statement is true about a cell wall but not a cell membrane

Answers

A cell wall is in a plant cell. A cell membrane is in an animal cell.
Cell wall is in plant cells while membrane can be found in animal cells

Food taken in by living organisms can be broken down and used to

Answers

it is use to biodegration

Answer:

it is used to build ATP molecules love ya

Explanation:

A simple test to differentiate between Staphylococcus and Streptococcus is the addition of H2O2 to a colony to see if bubbles form, which are positive for catalase. Which organism would be positive

Answers

Answer:

The Correct answer is B, Staphylococcus.

Explanation:

The Catalase test is used to differentiate Staphylococci (Catalase positive) from Streptococci (Catalyst negative). The enzyme catalase is produced by bacteria that respire using oxygen and protects them from the toxic by-products of oxygen metabolism.

Catalase positive bacteria includes strict aerobes as well as facultative anaerobes. Catalase negative bacteria maybe anarobes or facultative anarobes that only ferment and don't respire using oxygen as terminal electron acceptor.

Catalase converts hydrogen peroxide to water and oxygen gas. Though both Staphylococcus and Streptococcus are gram positive bacteria, only Staphylococcus produces catalase enzymes.

The main source of conflict in the Middle East between Israel and the Palestinians involves? A. oil rights
B. communism
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D. religion

Answers

The main source of conflict in the Middle East between Israel and the Palestinians involves religion. The answer to your question is D. I hope this is the answer that you are looking for and it comes to your help.

I think the letter is D)RELIGION because at school in this magazine i read it said it but i don't know if i'm right that's why i'm on here to see we have final in 2 days.
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